subject:(Manufacturing processes )

Florida State University

1. Ingrole, Aniket. Dielectric and Mechanical Properties of PMMA/BTA Nanocomposites for HTS Applications.

Degree: MS, Industrial and Manufacturing Engineering, 2010, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3865 ;

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To prepare dielectric materials for High Temperature Superconductor (HTS) cables, nanocomposites consisting of Polymethylmethacrylate (PMMA) and Barium Titanate (BTA) nanoparticles have been manufactured and evaluated.… (more)

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To prepare dielectric materials for High Temperature Superconductor (HTS) cables, nanocomposites consisting of Polymethylmethacrylate (PMMA) and Barium Titanate (BTA) nanoparticles have been manufactured and evaluated. The main objective of this research is to enhance the dielectric breakdown strength and reduce the dielectric losses of the nanocomposites. Polymethylmethacrylate (PMMA) with the addition of BTA (5wt.% and 10wt.% ) nanocomposites were fabricated by using two different methods. The breakdown voltage measurements have been conducted under AC, DC and lightning impulse high voltage. The measurements were conducted at both room temperature (293 K) and liquid nitrogen temperature (77 K). The results of the electrical breakdown field measurements of the nanocomposites are compared with those of the base polymer. Fracture surface analysis was carried out with SEM analysis. The difference in the breakdown area due to different modes of voltages applied and effect of the nanoparticles was studied. Mechanical characterization of the resultant nanocomposites was also carried out at both the room temperature (293K) and at cryogenic temperature (77K). The effects of nanoparticles on the electrical and mechanical properties were observed. A marginal increase in the dielectric strength of the nanocomposites was observed for AC conditions at both the temperatures. There was a decrease in the values of nanocomposites for impulse conditions. At cryogenic temperature nanocomposites showed higher dielectric strength when DC voltage was applied. For both the temperatures, dielectric losses increased as the voltage was increased for all the materials studied, except for PMMA/10wt.%BTA nanocomposites at cryogenic temperature, which showed decrease of losses by ~ 70%. An increase of ~12% in Young's modulus and ~ 65% increase in tensile strength of the nanocomposites were observed at cryogenic temperature. It also shows that more material damage was observed under AC breakdown voltage compared to the impulse and DC voltage breakdown cases. Also the material damage was more pronounced at 77 K than that at 293 K.

A Thesis submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Master of Science.

Summer Semester, 2010.

July 6, 2010.

Tan Delta Losses, Impulse Breakdown, DC Breakdown, AC Breakdown, Barium Titanate, Polymethylmethacrylate (PMMA), Cryogenic Insulation, High Temperature Superconductors (HTS), Nanodielectrics, Mechanical Breakdown, Surface Fracture Analysis, Weibull Plots

Zhiyong Richard Liang, Professor Directing Thesis; Horatio Rodrigo, Committee Member; Okenwa Okoli, Committee Member; Mei Zhang, Committee Member.

Advisors/Committee Members: Zhiyong Richard Liang (professor directing thesis), Horatio Rodrigo (committee member), Okenwa Okoli (committee member), Mei Zhang (committee member).

Subjects/Keywords: Manufacturing processes

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APA (6^th Edition):

Ingrole, A. (2010). Dielectric and Mechanical Properties of PMMA/BTA Nanocomposites for HTS Applications. (Masters Thesis). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3865 ;

Chicago Manual of Style (16^th Edition):

Ingrole, Aniket. “Dielectric and Mechanical Properties of PMMA/BTA Nanocomposites for HTS Applications.” 2010. Masters Thesis, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-3865 ;.

MLA Handbook (7^th Edition):

Ingrole, Aniket. “Dielectric and Mechanical Properties of PMMA/BTA Nanocomposites for HTS Applications.” 2010. Web. 19 Jan 2020.

Vancouver:

Ingrole A. Dielectric and Mechanical Properties of PMMA/BTA Nanocomposites for HTS Applications. [Internet] [Masters thesis]. Florida State University; 2010. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3865 ;.

Council of Science Editors:

Ingrole A. Dielectric and Mechanical Properties of PMMA/BTA Nanocomposites for HTS Applications. [Masters Thesis]. Florida State University; 2010. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3865 ;

Rutgers University

2. Xie, Jingjin. Nozzle-based additive manufacturing of fiber-filled thermosets: a case study on soft and hard materials.

Degree: PhD, Mechanical and Aerospace Engineering, 2018, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/57760/

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The intent of this work is to develop a framework towards nozzle-based additive manufacturing (AM) of thermal curing polymers embedded with fibers, which could enable… (more)

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The intent of this work is to develop a framework towards nozzle-based additive manufacturing (AM) of thermal curing polymers embedded with fibers, which could enable functional tools and actuators made of hard and soft materials. Thermosetting systems, such as epoxies, cyanate esters (CE), and silicones, represent a class of materials that do not allow reversible liquid-solid phase changes at an elevated temperature. Extruded thermosetting composites have the potential to overcome issues with limited mechanical stability and strength as presented in thermoplastic materials at high temperatures; it also allows further tuning the characteristics of extruded parts by leveraging the filler materials' unique properties. A nozzle-based approach becomes preferable not only because of its simplicity in configuration and ease of use, but also its additional layer of protection as the extruding materials are in closed containers, which is beneficial for unique applications, such as in-space additive manufacturing (ISAM). This work focused on a proof-of-concept solution for AM of thermosetting composites, accompanied with material characterizations, experimental validations and numerical analysis of a scalable, reproducible system. It consists of systematic reviews and studies of the mechanical, thermal, and rheological properties of two representative thermosetting systems, i.e., Ecoflex 0050 and G/Flex. The experimental study includes material processing, extrusion of fiber-embedded polymers, characterization of cure kinetics, rheology of polymers, and evaluation of printed parts. With milled carbon fibers (up to 20 wt%), the experimental results also showed tunable mechanical and thermal performance by using shear-induced alignment of filler materials. Finally, this work suggests two schemes for 2-D and 3-D multiphysics simulations based on the developed models for rheological properties and cure kinetics. The predictive tools could be advantageous in design of parts, elimination of errors, and tuning of processing parameters.

Advisors/Committee Members: Mazzeo, Aaron D. (chair), Cuitino, Alberto (internal member), Lee, Howon (internal member), Pelegri, ASSIMINA (internal member), Hull, Patrick V. (outside member), School of Graduate Studies.

Subjects/Keywords: Manufacturing processes

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APA (6^th Edition):

Xie, J. (2018). Nozzle-based additive manufacturing of fiber-filled thermosets: a case study on soft and hard materials. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/57760/

Chicago Manual of Style (16^th Edition):

Xie, Jingjin. “Nozzle-based additive manufacturing of fiber-filled thermosets: a case study on soft and hard materials.” 2018. Doctoral Dissertation, Rutgers University. Accessed January 19, 2020. https://rucore.libraries.rutgers.edu/rutgers-lib/57760/.

MLA Handbook (7^th Edition):

Xie, Jingjin. “Nozzle-based additive manufacturing of fiber-filled thermosets: a case study on soft and hard materials.” 2018. Web. 19 Jan 2020.

Vancouver:

Xie J. Nozzle-based additive manufacturing of fiber-filled thermosets: a case study on soft and hard materials. [Internet] [Doctoral dissertation]. Rutgers University; 2018. [cited 2020 Jan 19]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/57760/.

Council of Science Editors:

Xie J. Nozzle-based additive manufacturing of fiber-filled thermosets: a case study on soft and hard materials. [Doctoral Dissertation]. Rutgers University; 2018. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/57760/

Oregon State University

3. Garretson, Ian C. A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment.

Degree: MS, Industrial Engineering, 2015, Oregon State University

URL: http://hdl.handle.net/1957/57191

► Manufacturing industry drives economic activity and growth around the world, but manufacturing activities consume large amounts of material, energy, and labor resources. Therefore, the impacts… (more)

▼ Manufacturing industry drives economic activity and growth around the world, but manufacturing activities consume large amounts of material, energy, and labor resources. Therefore, the impacts of manufacturing need to be accounted for and reduced. Direct benefits of manufacturing are products and income, which, in turn, influence the lives of people in the local community and the consumers purchasing the manufactured products. The design process for products and requisite manufacturing facilities should incorporate environmental and social criteria in addition to economic criteria to more comprehensively assess sustainability performance. Sustainability assessments for manufactured products and manufacturing facilities can be carried out by assessing the incremental elements of manufacturing industry, which are unit manufacturing processes (UMPs). A challenge in the research area is that current methods for UMP assessment are ad hoc and the methods do not incorporate the system as a whole. The purpose of this research is to enable sustainable manufacturing decision making by 1) unifying an assessment methodology for UMPs, 2) developing an information modeling framework for characterizing UMPs and workpieces, and 3) demonstrating UMP composability (connectivity) modeling for use in sustainability assessments. The methodology is developed through literature review, and unifies 23 different UMP manufacturing assessment methods by analyzing each for overlapping and unique steps in the approaches. Thus, a nine-step assessment methodology emerged, which has multiple applications in industry, including process and facility assessment and improvement. A next step for MPF modeling is to link UMP models by modeling the workpiece state, but supporting tools were need to identifying how to correctly model the interactions between the UMP and the workpiece. The information modeling framework developed herein provides the theoretical background for how UMP models interact by linking the function of the UMP to the effect on the workpiece and by identifying the calculation variables necessary to assess UMPs. The information modeling framework developed for composing UMP models is demonstrated through the energy analysis of a metal component. The component is manufactured by recrystallization annealing, reducing (milling), through hardening, and recovery annealing (tempering). Models are composed (connected) by utilizing knowledge of how UMPs impart transformation to the workpiece and the information embedded in the workpiece that is transported to subsequent UMPs. Workpiece information includes the geometry and properties of the current state and future states. Previous work reported in literature has focused on geometry modeling (e.g. CAD, CAM), while this work focuses on property modeling. This research develops an overarching detailed approach to manufacturing sustainability assessments through in-depth analysis of UMPs. The result of using this UMP approach will provide guidance toward a more sustainable future. Advisors/Committee Members: Haapala, Karl R. (advisor), Paul, Brian (committee member).

Subjects/Keywords: Unit Manufacturing Process; Manufacturing processes

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APA (6^th Edition):

Garretson, I. C. (2015). A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/57191

Chicago Manual of Style (16^th Edition):

Garretson, Ian C. “A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment.” 2015. Masters Thesis, Oregon State University. Accessed January 19, 2020. http://hdl.handle.net/1957/57191.

MLA Handbook (7^th Edition):

Garretson, Ian C. “A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment.” 2015. Web. 19 Jan 2020.

Vancouver:

Garretson IC. A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment. [Internet] [Masters thesis]. Oregon State University; 2015. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/1957/57191.

Council of Science Editors:

Garretson IC. A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment. [Masters Thesis]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/57191

Oregon State University

4. Malshe, Harsha A. A Techno-Economic Assessment Methodology for Advanced Additive and Joining Processes.

Degree: MS, Industrial Engineering, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59865

► Integrated manufacturing systems, a combination of subtractive, additive, and joining processes, provide a competitive advantage for manufacturing organizations. As product designs become more complex and… (more)

Subjects/Keywords: Additive manufacturing; Manufacturing processes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Malshe, H. A. (2016). A Techno-Economic Assessment Methodology for Advanced Additive and Joining Processes. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/59865

Chicago Manual of Style (16^th Edition):

Malshe, Harsha A. “A Techno-Economic Assessment Methodology for Advanced Additive and Joining Processes.” 2016. Masters Thesis, Oregon State University. Accessed January 19, 2020. http://hdl.handle.net/1957/59865.

MLA Handbook (7^th Edition):

Malshe, Harsha A. “A Techno-Economic Assessment Methodology for Advanced Additive and Joining Processes.” 2016. Web. 19 Jan 2020.

Vancouver:

Malshe HA. A Techno-Economic Assessment Methodology for Advanced Additive and Joining Processes. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/1957/59865.

Council of Science Editors:

Malshe HA. A Techno-Economic Assessment Methodology for Advanced Additive and Joining Processes. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59865

Stellenbosch University

5. Vogt, Christian. An experimental cost model for composite parts using vacuum assisted resin transfer moulding (VARTM).

Degree: Mechanical and Mechatronic Engineering, 2011, Stellenbosch University

URL: http://hdl.handle.net/10019.1/6579

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Thesis (MScEng (Mechanical and Mechatronic Engineering)) – University of Stellenbosch, 2011.

ENGLISH ABSTRACT: Vacuum assisted resin transfer moulding (VARTM) belongs to the category of resin infusion… (more)

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Thesis (MScEng (Mechanical and Mechatronic Engineering)) – University of Stellenbosch, 2011.

ENGLISH ABSTRACT: Vacuum assisted resin transfer moulding (VARTM) belongs to the category of resin infusion techniques that use lower than atmospheric pressure to infiltrate a reinforced cavity. This technique has various advantages; however, manufacturing costs can be relatively high due to more difficult shapes fabricated and a lack of knowledge regarding cost driving factors. The objective of this study was to develop a cost model for composite parts. Such a model allows the estimation of manufacturing costs of shapes of different geometries. Therefore, it provides a comparison to alternative manufacturing techniques, such as metal forming or composite spray lay-up and helps to avoid unnecessarily expensive design features. The proposal was made to split complex shaped composite parts into individual basic shapes, which are further investigated here. For the basic shapes, an experimental approach was used where the manufacturing times of each process step are measured and then statistically analysed. Infusion simulation software was used to obtain additional filling times to complete the design of experiments. This method allows the estimation of manufacturing times of composite parts with different geometries. The manufacturing times were validated to that of a complex shaped industrial part, with reasonable results. Finally, a flexible cost model was developed to compare different manufacturing techniques and to estimate the manufacturing costs.

AFRIKAANSE OPSOMMING: Vakuumgesteunde harsinspuitingsgietwerk (VARTM) behoort tot die kategorie harsinspuitingstegnieke wat laer-as-atmosferiese druk gebruik om ŉ versterkte holte binne te dring. Hierdie tegniek hou verskeie voordele in. Tog kan vervaardigingskoste betreklik hoog wees wanneer dit by ingewikkelder vorms en ŉ gebrek aan kennis met betrekking tot kostesnellers kom. Die doelwit van hierdie studie was om ŉ kostemodel vir saamgestelde onderdele te ontwikkel. Die model maak voorsiening vir die raming van die vervaardigingskoste vir verskillende afmetings. Sodoende bied dit ŉ vergelyking met alternatiewe tegnieke, en help voorkom onnodig duur ontwerpkenmerke. Daar is voorgestel dat dele met ingewikkelde vorms in individuele basiese vorms verdeel word, wat dan hier verder ondersoek word. Vir die basiese vorms word ŉ eksperimentele benadering gebruik waar die vervaardigingstye in elke prosesstap gemeet en statisties ontleed word. Voorts word inspuitingsimulasiesagteware gebruik om komplementêre inspuitingstye te bepaal ten einde die eksperimentele ontwerp te voltooi. Hierdie metode maak dit ook moontlik om die vervaardigingstye vir saamgestelde materiaal onderdele van verskillende afmetings te raam. Die vervaardigingstye word dan bevestig aan die hand van dié van ŉ kompleks gevormde industriële onderdeel, met redelike resultate. Uiteindelik word ŉ buigsame kostemodel ontwikkel om verskillende vervaardigingstegnieke te vergelyk en die…

Advisors/Committee Members: Schreve, K., University of Stellenbosch. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering..

Subjects/Keywords: Mechanical engineering; Manufacturing processes; Manufacturing processes – Costs

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vogt, C. (2011). An experimental cost model for composite parts using vacuum assisted resin transfer moulding (VARTM). (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/6579

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vogt, Christian. “An experimental cost model for composite parts using vacuum assisted resin transfer moulding (VARTM).” 2011. Thesis, Stellenbosch University. Accessed January 19, 2020. http://hdl.handle.net/10019.1/6579.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vogt, Christian. “An experimental cost model for composite parts using vacuum assisted resin transfer moulding (VARTM).” 2011. Web. 19 Jan 2020.

Vancouver:

Vogt C. An experimental cost model for composite parts using vacuum assisted resin transfer moulding (VARTM). [Internet] [Thesis]. Stellenbosch University; 2011. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10019.1/6579.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vogt C. An experimental cost model for composite parts using vacuum assisted resin transfer moulding (VARTM). [Thesis]. Stellenbosch University; 2011. Available from: http://hdl.handle.net/10019.1/6579

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Nelson Mandela Metropolitan University

6. Odendaal, Morné. Wireless rotational process monitoring system.

Degree: MTech, Faculty of Engineering, the Built Environment and Information Technology, 2011, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/1347

► The manufacturing industry is constantly looking for ways to reduce production costs and at the same time to increase productivity. Automation of common manufacturing operations… (more)

Subjects/Keywords: Manufacturing processes – Automation

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APA (6^th Edition):

Odendaal, M. (2011). Wireless rotational process monitoring system. (Masters Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/1347

Chicago Manual of Style (16^th Edition):

Odendaal, Morné. “Wireless rotational process monitoring system.” 2011. Masters Thesis, Nelson Mandela Metropolitan University. Accessed January 19, 2020. http://hdl.handle.net/10948/1347.

MLA Handbook (7^th Edition):

Odendaal, Morné. “Wireless rotational process monitoring system.” 2011. Web. 19 Jan 2020.

Vancouver:

Odendaal M. Wireless rotational process monitoring system. [Internet] [Masters thesis]. Nelson Mandela Metropolitan University; 2011. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10948/1347.

Council of Science Editors:

Odendaal M. Wireless rotational process monitoring system. [Masters Thesis]. Nelson Mandela Metropolitan University; 2011. Available from: http://hdl.handle.net/10948/1347

Florida State University

7. Chen, Li-Jen. Uncertainty Quantification for Buckypaper Polymer Composite Computer Simulation.

Degree: MS, Industrial and Manufacturing Engineering, 2010, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3838 ;

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Since the discovery of carbon nanotubes in 1991 alongside their superior performance in mechanical and electrical properties, carbon nanotubes have been widely considered to be… (more)

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Since the discovery of carbon nanotubes in 1991 alongside their superior performance in mechanical and electrical properties, carbon nanotubes have been widely considered to be one of the most promising next generation materials. They have been frequently used in polymer composites due to their high strength-to-weight and modulus-to-weight ratios. Yet despite their promising qualities in manufacturing, carbon nanotube based composites still have many issues that need to be resolved before they can be used for industrial applications. In order to more cost effectively produce nanocomposites and improve their quality, it is necessary to accurately observe and understand the variations in their raw material properties. The variability of the raw material in nanotube based composites usually has a large impact on the properties of the eventual product. However, physical experimentation for the purpose of quantifying variability in nanomaterial properties is usually expensive and sometimes not feasible or accurate enough. This paper presents a constrained nonlinear programming approach for the quantification of raw material variability while also examining the impact of raw material variability on the properties of buckypaper polymer (BPP) composites. The proposed approach suggests conducting small physical experiments to collect data on raw material properties and final composite part properties before employing an inverse uncertainty propagation approach to estimate the parameters of the probability distribution of the material properties. Both univariate and multivariate probability distributions are considered. A case study based on data from a real buckypaper manufacturing process is used to illustrate the approach. It is shown that simultaneously modeling the material properties with a multivariate distribution improves the quality of the identified model.

A Thesis submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Master of Science.

Summer Semester, 2010.

June 11, 2010.

Uncertainty Quantification, Monte Carlo Simulation, Nonlinear Programming, Nanocomposites

Arda Vanli, Professor Directing Thesis; Joseph Pignatiello, Committee Member; Chad Zeng, Committee Member; Ben Wang, Committee Member; Chuck Zhang, Committee Member.

Advisors/Committee Members: Arda Vanli (professor directing thesis), Joseph Pignatiello (committee member), Chad Zeng (committee member), Ben Wang (committee member), Chuck Zhang (committee member).

Subjects/Keywords: Engineering; Manufacturing processes

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APA (6^th Edition):

Chen, L. (2010). Uncertainty Quantification for Buckypaper Polymer Composite Computer Simulation. (Masters Thesis). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3838 ;

Chicago Manual of Style (16^th Edition):

Chen, Li-Jen. “Uncertainty Quantification for Buckypaper Polymer Composite Computer Simulation.” 2010. Masters Thesis, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-3838 ;.

MLA Handbook (7^th Edition):

Chen, Li-Jen. “Uncertainty Quantification for Buckypaper Polymer Composite Computer Simulation.” 2010. Web. 19 Jan 2020.

Vancouver:

Chen L. Uncertainty Quantification for Buckypaper Polymer Composite Computer Simulation. [Internet] [Masters thesis]. Florida State University; 2010. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3838 ;.

Council of Science Editors:

Chen L. Uncertainty Quantification for Buckypaper Polymer Composite Computer Simulation. [Masters Thesis]. Florida State University; 2010. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3838 ;

Florida State University

8. Koo, Ana. Short Carbon Nanotubes and Carbon Nanofibers Composites: Fabrication and Property Study.

Degree: MS, Industrial and Manufacturing Engineering, 2011, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-2841 ;

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Carbon nanotubes (CNTs) have drawn interest for many applications since their discovery. While they provide exceptional mechanical, physical and chemical properties, several technical barriers must… (more)

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Carbon nanotubes (CNTs) have drawn interest for many applications since their discovery. While they provide exceptional mechanical, physical and chemical properties, several technical barriers must be overcome before these properties can be fully used. Some of such drawbacks concern length control, lack of good dispersion and poor interfacial bonding. Currently, CNTs such as single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs) and carbon nanofibers (CNFs) are produced in lengths ranging between several to hundreds micrometers and are usually bounded into macroscopically entangled networks. This contradicts with the requirements of some applications, which in the end will benefit with short and highly dispersed CNTs in lengths of a few hundred nanometers or less, such as drug delivering and energy storage carriers. Short CNTs (s-CNTs) and CNFs (s-CNFs) can enhance the mechanical properties of a composite due to the increased interaction with the polymer matrix, through the improvement of the interfacial bonding and resin encapsulation, which is possible with existing open ends of nanotubes. Ultimately this influences the matrix's properties by affecting its chain entanglements, morphology, and crystallinity in the nanocomposite. This research is a continuous effort on nanoscale cutting and characterization of s-CNTs and s-CNFs. Moreover, this research used s-MWNTs and s-CNFs in the lengths of 200 and 500 nm to manufacture the nanocomposites. The mechanical properties of the resultant nanocomposties were characterized. The interactions of the s-MWNT and s-CNTs with epoxy resin matrix were observed using high-resolution SEM and atomic-resolution TEM. The results were compared to nanocomposites with pristine MWNTs and CNFs. In the study, four case studies were explored: 1) 200 nm s-MWNT/epoxy composites; 2) 500 nm s-MWNTs/epoxy composites; 3) 200 nm s-CNF/epoxy composites; 4) 500 nm s-CNF/epoxy composites. For all four cases the MWNT and CNF concentrations were 0.05 wt%, 0.10 wt%, and 1.00 wt%, respectively. Significant mechanical improvements were observed. The strength of the s-MWNT nanocomposite at 1.00 wt% gave a 64% improvement compared to the control sample. The highest young's modulus was also obtained in the 1.00 wt% s-MWNT (200 nm) nanocomposite, and it showed an increase of 44%. In general, the most significant improvements were seen with the s-MWNTs (200 nm) nanocomposites due to their smaller diameters and shorter length. Glass transition temperature was also studied. Finally, the interfacial bonding and interactions of the nanotube's opened ends with the resin matrix were observed through HR-SEM and atomic-resolution TEM analysis, which validated the creation of MWNT and CNF opened ends and the actual resin encapsulation inside the nanotubes' hollow structures.

A Thesis submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Master of Science.

Summer Semester, 2011.

April 27,…

Advisors/Committee Members: Zhiyong Richard Liang (professor directing thesis), Tao Liu (committee member), Chun Chuck Zhang (committee member).

Subjects/Keywords: Engineering; Manufacturing processes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Koo, A. (2011). Short Carbon Nanotubes and Carbon Nanofibers Composites: Fabrication and Property Study. (Masters Thesis). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-2841 ;

Chicago Manual of Style (16^th Edition):

Koo, Ana. “Short Carbon Nanotubes and Carbon Nanofibers Composites: Fabrication and Property Study.” 2011. Masters Thesis, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-2841 ;.

MLA Handbook (7^th Edition):

Koo, Ana. “Short Carbon Nanotubes and Carbon Nanofibers Composites: Fabrication and Property Study.” 2011. Web. 19 Jan 2020.

Vancouver:

Koo A. Short Carbon Nanotubes and Carbon Nanofibers Composites: Fabrication and Property Study. [Internet] [Masters thesis]. Florida State University; 2011. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-2841 ;.

Council of Science Editors:

Koo A. Short Carbon Nanotubes and Carbon Nanofibers Composites: Fabrication and Property Study. [Masters Thesis]. Florida State University; 2011. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-2841 ;

Nelson Mandela Metropolitan University

9. Roth, Benlloyd Koekemoer. Enablers for lean process sustainability within South African manufacturing industries.

Degree: Faculty of Business and Economic Sciences, 2015, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/6591

► James Womack and his colleagues Daniel Jones and Daniel Roos changed the way western civilization approached manufacturing. In 1990, they published a book called ‘The… (more)

▼ James Womack and his colleagues Daniel Jones and Daniel Roos changed the way western civilization approached manufacturing. In 1990, they published a book called ‘The Machine That Changed the World: The Story of Lean Production’. It was a concept that had slowly filtered from the east but had not made its mark on the manufacturing sector. The concept of lean, born out of the Japanese Toyota Manufacturing System, was first thought to be impossible to duplicate outside of Japan. Since Womack and company popularised this “new” way of producing goods and delivering services it spread across industries finding popularity in the medical, engineering, accounting and especially the manufacturing industries. Over the last few decades lean practices has been synonymous with efficiency, cost reduction, supply chain optimisation and innovative problem solving (Anvari Norzima, Rosnah, Hojjati and Ismail, 2010; Pieterse et al., 2010; Womack et al., 1990). Lean process implementation has been researched in abundance, as has failed attempts at lean implementation. The purpose of this study was to identify and assess enablers of lean sustainability in organisations where lean processes are already being implemented. The literature study found Organisational Culture, Leadership, Employee Engagement and Trade Unions participation as factors that contributed to successful lean implementations. The author developed a model to test Organisational Culture, Leadership, Employee Engagement and Trade Unions as enablers to sustain lean practices in organisations in South Africa’s manufacturing industries. The results proved that Organisational Culture, Leadership and Employee Engagement were considered enablers for lean sustainability. These three enablers have an interlinked relationship and together help sustainability. Lacking just one factor would surely result in unsustainable lean practices. The study was conducted in the quantitative paradigm, as the hypothesised relationship was statistically tested. The data was collected from a homogenous group via an email sent with a link to the questionnaire. The data was statistically analysed with Statistica software and Microsoft Excel.

Subjects/Keywords: Lean manufacturing; Manufacturing processes; Process control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Roth, B. K. (2015). Enablers for lean process sustainability within South African manufacturing industries. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/6591

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Roth, Benlloyd Koekemoer. “Enablers for lean process sustainability within South African manufacturing industries.” 2015. Thesis, Nelson Mandela Metropolitan University. Accessed January 19, 2020. http://hdl.handle.net/10948/6591.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Roth, Benlloyd Koekemoer. “Enablers for lean process sustainability within South African manufacturing industries.” 2015. Web. 19 Jan 2020.

Vancouver:

Roth BK. Enablers for lean process sustainability within South African manufacturing industries. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2015. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10948/6591.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Roth BK. Enablers for lean process sustainability within South African manufacturing industries. [Thesis]. Nelson Mandela Metropolitan University; 2015. Available from: http://hdl.handle.net/10948/6591

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of KwaZulu-Natal

10. Collins, James. Automatic calibration of a tool-changing unit for modular reconfigurable machines.

Degree: MS, Mechanical engineering, 2011, University of KwaZulu-Natal

URL: http://hdl.handle.net/10413/8859

► Modern trends in customer demand have resulted in the development of a class of manufacturing system known as Reconfigurable Manufacturing Systems (RMS). Reconfigurable systems are… (more)

Subjects/Keywords: Mechanical engineering.; Manufacturing processes – Automation.

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APA (6^th Edition):

Collins, J. (2011). Automatic calibration of a tool-changing unit for modular reconfigurable machines. (Masters Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/8859

Chicago Manual of Style (16^th Edition):

Collins, James. “Automatic calibration of a tool-changing unit for modular reconfigurable machines.” 2011. Masters Thesis, University of KwaZulu-Natal. Accessed January 19, 2020. http://hdl.handle.net/10413/8859.

MLA Handbook (7^th Edition):

Collins, James. “Automatic calibration of a tool-changing unit for modular reconfigurable machines.” 2011. Web. 19 Jan 2020.

Vancouver:

Collins J. Automatic calibration of a tool-changing unit for modular reconfigurable machines. [Internet] [Masters thesis]. University of KwaZulu-Natal; 2011. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10413/8859.

Council of Science Editors:

Collins J. Automatic calibration of a tool-changing unit for modular reconfigurable machines. [Masters Thesis]. University of KwaZulu-Natal; 2011. Available from: http://hdl.handle.net/10413/8859

University of KwaZulu-Natal

11. Engelbrecht, G. J. Successfully implementing a Manufacturing Execution Systems (MES) solutions.

Degree: Business administration, 2007, University of KwaZulu-Natal

URL: http://hdl.handle.net/10413/1484

► A Manufacturing Execution System (MES) is a system that companies use to measure and control critical production activities. As the installed base of MES installations… (more)

Subjects/Keywords: Manufacturing processes.; Business administration.

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APA (6^th Edition):

Engelbrecht, G. J. (2007). Successfully implementing a Manufacturing Execution Systems (MES) solutions. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/1484

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Engelbrecht, G J. “Successfully implementing a Manufacturing Execution Systems (MES) solutions. ” 2007. Thesis, University of KwaZulu-Natal. Accessed January 19, 2020. http://hdl.handle.net/10413/1484.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Engelbrecht, G J. “Successfully implementing a Manufacturing Execution Systems (MES) solutions. ” 2007. Web. 19 Jan 2020.

Vancouver:

Engelbrecht GJ. Successfully implementing a Manufacturing Execution Systems (MES) solutions. [Internet] [Thesis]. University of KwaZulu-Natal; 2007. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10413/1484.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Engelbrecht GJ. Successfully implementing a Manufacturing Execution Systems (MES) solutions. [Thesis]. University of KwaZulu-Natal; 2007. Available from: http://hdl.handle.net/10413/1484

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

12. Rafibakhsh, Nima. Automated Assembly Planning : From CAD Model to Virtual Assembly Process.

Degree: PhD, Mechanical Engineering, 2017, Oregon State University

URL: http://hdl.handle.net/1957/60626

► Assembly planning is a crucial task for every manufacturing product. In general, assembly operations consume more than 30% of the total manufacturing time and cost.… (more)

▼ Assembly planning is a crucial task for every manufacturing product. In general, assembly operations consume more than 30% of the total manufacturing time and cost. Therefore, any effort in optimizing assembly will have a significant impact on the economic success of manufacturing. Finding an optimal assembly plan by hand is tedious and perhaps impractical for the large models. This research introduces an automatic computational tool in automated assembly planning (AAP) to automatically transform a CAD assembly into a set of assembly instructions. The goal is to make this transformation with as little user commitment as possible. Thus, automation is applied on every detail of the work. The work has five main divisions: geometric reasoning, complex geometry detection, graph representation, AI Planning and post–planning. To have the most general assembly planning tool, tessellation is considered as the representation of the input model. A revolutionary reasoning scheme is implemented to efficiently derive geometric and mating constraints from the tessellated models along with detection of complex geometries including fasteners, gears and springs. The mating information between assembly parts are stored in a liaison graph which is the starting point of an artificial intelligence planning procedure. Various graph–based algorithms are implemented to generate feasible assembly candidates. The AI planning evaluates every assembly candidate with complex statistical models and produces multiple instructions in terms of a detailed assembly tree or called Treequence. In the post–planning section, an optimization algorithm is applied on the generated treequence to find the optimal orientation of the subassemblies in the entire assembly process. A scheduling approach is also implemented to allocate the workers throughout the assembly tasks. The efforts of this PhD work can be visualized and edited by either a web-interface or IC.IDO virtual reality platform. The implemented tool can accommodate changes after a user has seen the result. Advisors/Committee Members: Campbell, Matthew I. (advisor), Logendran, Rasaratnam (committee member).

Subjects/Keywords: Assembly Planning; Manufacturing processes – Planning

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APA (6^th Edition):

Rafibakhsh, N. (2017). Automated Assembly Planning : From CAD Model to Virtual Assembly Process. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/60626

Chicago Manual of Style (16^th Edition):

Rafibakhsh, Nima. “Automated Assembly Planning : From CAD Model to Virtual Assembly Process.” 2017. Doctoral Dissertation, Oregon State University. Accessed January 19, 2020. http://hdl.handle.net/1957/60626.

MLA Handbook (7^th Edition):

Rafibakhsh, Nima. “Automated Assembly Planning : From CAD Model to Virtual Assembly Process.” 2017. Web. 19 Jan 2020.

Vancouver:

Rafibakhsh N. Automated Assembly Planning : From CAD Model to Virtual Assembly Process. [Internet] [Doctoral dissertation]. Oregon State University; 2017. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/1957/60626.

Council of Science Editors:

Rafibakhsh N. Automated Assembly Planning : From CAD Model to Virtual Assembly Process. [Doctoral Dissertation]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/60626

13. Hoffmann, Peter. On virtual commissioning of manufacturing systems : proposals for a systematic VC simulation study methodology and a new simulation model building approach.

Degree: PhD, 2016, University of South Wales

URL: https://pure.southwales.ac.uk/en/studentthesis/on-virtual-commissioning-of-manufacturing-systems(a4f3fdc4-56b5-4429-8432-b1975d09cf08).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.749714

► The development of manufacturing systems is faced with progressively tightening time frames, along with growing requirements on planning quality and engineering accuracy. These demands result… (more)

▼ The development of manufacturing systems is faced with progressively tightening time frames, along with growing requirements on planning quality and engineering accuracy. These demands result from significant cost constraints, shortening of product life-cycles, increasing number of product variants and economic needs for rapid time-to-market. Thus, an efficient production ramp-up including the commissioning as the crucial part, becomes more and more important for engineering companies to stay profitable. Virtual Commissioning (VC) is widely considered as promising method to address the challenges associated with real commissioning, but the simulation model building necessary for VC is affiliated with considerable effort and required expertise. VC of manufacturing systems has been a research topic in academia and industry for far more than a decade. Positive results are reported from large companies e.g. from the automotive industry, which are mostly utilising the complex and costly suites of tools in the context of the Digital Factory, rarely from SMEs. However, in particular also SMEs are forced to improve their engineering and commissioning processes, but suites of tools and methodologies used in large companies are not reasonably transferable to SMEs. Rationale for the rare use of VC, besides its general complexity, are a high modelling effort to build the necessary virtual plant models and a lack of availability of methodologies for systematic implementation and reasonable execution of VC. Thus, the main goal of this research is the development of a new systematic simulation study methodology as general guideline for planning, implementation and execution of VC. It is intended to be notably beneficial for engineers from SMEs, as helpful guideline for planning, implementation and execution of VC and to facilitate the substantially high modelling effort required for VC of manufacturing systems. Besides clarifying the requirements and specifying an environment for VC, the criteria to select an appropriate simulation tool have been established. The proposed modular, component based simulation model building has been split into specified procedures for “Low-level Component Modelling”, to be conducted for the components of the decomposed real manufacturing system, and subsequent “High-level Plant Modelling” of the virtual manufacturing system. The applicability of these new approaches has been validated by planning, implementing and conducting a VC for a trackbound transportation system with self-driving transport cars on passive tracks, which is the major subsystem of the manufacturing system used as test-bed at the UASA Hannover. As one main result, a novel workflow for Low-level Component Modelling has been proposed that aims for the gradual relocation of this modelling task as far as possible to the origin of components, in the end the component manufacturers should provide together with the deliverable components their mechatronic component models. This is related to a novel proposal for exchangeable mechatronic…

Subjects/Keywords: Manufacturing processes; Automation; Production management

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hoffmann, P. (2016). On virtual commissioning of manufacturing systems : proposals for a systematic VC simulation study methodology and a new simulation model building approach. (Doctoral Dissertation). University of South Wales. Retrieved from https://pure.southwales.ac.uk/en/studentthesis/on-virtual-commissioning-of-manufacturing-systems(a4f3fdc4-56b5-4429-8432-b1975d09cf08).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.749714

Chicago Manual of Style (16^th Edition):

Hoffmann, Peter. “On virtual commissioning of manufacturing systems : proposals for a systematic VC simulation study methodology and a new simulation model building approach.” 2016. Doctoral Dissertation, University of South Wales. Accessed January 19, 2020. https://pure.southwales.ac.uk/en/studentthesis/on-virtual-commissioning-of-manufacturing-systems(a4f3fdc4-56b5-4429-8432-b1975d09cf08).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.749714.

MLA Handbook (7^th Edition):

Hoffmann, Peter. “On virtual commissioning of manufacturing systems : proposals for a systematic VC simulation study methodology and a new simulation model building approach.” 2016. Web. 19 Jan 2020.

Vancouver:

Hoffmann P. On virtual commissioning of manufacturing systems : proposals for a systematic VC simulation study methodology and a new simulation model building approach. [Internet] [Doctoral dissertation]. University of South Wales; 2016. [cited 2020 Jan 19]. Available from: https://pure.southwales.ac.uk/en/studentthesis/on-virtual-commissioning-of-manufacturing-systems(a4f3fdc4-56b5-4429-8432-b1975d09cf08).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.749714.

Council of Science Editors:

Hoffmann P. On virtual commissioning of manufacturing systems : proposals for a systematic VC simulation study methodology and a new simulation model building approach. [Doctoral Dissertation]. University of South Wales; 2016. Available from: https://pure.southwales.ac.uk/en/studentthesis/on-virtual-commissioning-of-manufacturing-systems(a4f3fdc4-56b5-4429-8432-b1975d09cf08).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.749714

Massey University

14. Winchester, James. Model based analysis of the operation and control of falling film evaporators : a thesis presented for the degree of Doctor of Philosophy in Technology and Engineering, Massey University, Palmerston North, New Zealand .

Degree: 2011, Massey University

URL: http://hdl.handle.net/10179/2181

► Falling film evaporators are commonly used in the New Zealand dairy industry for the production of milk powders. Milk powder is not susceptible to bacterial… (more)

Subjects/Keywords: Evaporators; Mathematical models; Manufacturing processes

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APA (6^th Edition):

Winchester, J. (2011). Model based analysis of the operation and control of falling film evaporators : a thesis presented for the degree of Doctor of Philosophy in Technology and Engineering, Massey University, Palmerston North, New Zealand . (Thesis). Massey University. Retrieved from http://hdl.handle.net/10179/2181

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Winchester, James. “Model based analysis of the operation and control of falling film evaporators : a thesis presented for the degree of Doctor of Philosophy in Technology and Engineering, Massey University, Palmerston North, New Zealand .” 2011. Thesis, Massey University. Accessed January 19, 2020. http://hdl.handle.net/10179/2181.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Winchester, James. “Model based analysis of the operation and control of falling film evaporators : a thesis presented for the degree of Doctor of Philosophy in Technology and Engineering, Massey University, Palmerston North, New Zealand .” 2011. Web. 19 Jan 2020.

Vancouver:

Winchester J. Model based analysis of the operation and control of falling film evaporators : a thesis presented for the degree of Doctor of Philosophy in Technology and Engineering, Massey University, Palmerston North, New Zealand . [Internet] [Thesis]. Massey University; 2011. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10179/2181.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Winchester J. Model based analysis of the operation and control of falling film evaporators : a thesis presented for the degree of Doctor of Philosophy in Technology and Engineering, Massey University, Palmerston North, New Zealand . [Thesis]. Massey University; 2011. Available from: http://hdl.handle.net/10179/2181

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

15. Schlegel, Stephen C. A product development process measurement methodology applied to small manufacturing companies.

Degree: MS, Mechanical Engineering, 2000, Oregon State University

URL: http://hdl.handle.net/1957/33783

► The implementation of concurrent engineering into many large companies has greatly improved their product development processes. These companies have seen significant gains in quality and… (more)

▼ The implementation of concurrent engineering into many large companies has greatly improved their product development processes. These companies have seen significant gains in quality and customer satisfaction with reduced product costs, defects, and time-to-market (Lake, 1992). Many large companies have successfully employed this relatively new product development philosophy. However, smaller companies have not yet integrated this philosophy into their product development systems with the success that larger companies have seen. With small companies composing 98% of the manufacturing firms in this country (U.S. Census Bureau, 1995), there has been a recent push for the development of implementation methods for small companies. This paper presents a five step approach that small manufacturing companies can use to implement a concurrent engineering based product development process. Our definition of a small manufacturing company is an organization with 50 or fewer employees and net annual sales of 10 million dollars or less. The first step provides a general outline for companies to use in documenting their current product development process. The second step involves comparing the company's current product development process to a concurrent engineering based product development process model that is general enough for nearly all manufacturing firms. This step also includes the use of the theory of constraints and a so-called revised theory of constraints method to further refine the process understanding and description. Third, a new methodology for designing and applying process measurements is used to provide insight into the relationships that exists between the internal and external resources, requirements and deliverables of the product development process. It is during this step that the Process Measurement Matrix (PMM) is developed. Fourth, the PMM is used in conjunction with the analytical hierarchy process or a simple ranking technique to develop relative priorities. Finally, the appropriate measurements are constructed for each subprocess in the product development process. Advisors/Committee Members: Ulman, David G. (advisor).

Subjects/Keywords: Manufacturing processes

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APA (6^th Edition):

Schlegel, S. C. (2000). A product development process measurement methodology applied to small manufacturing companies. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/33783

Chicago Manual of Style (16^th Edition):

Schlegel, Stephen C. “A product development process measurement methodology applied to small manufacturing companies.” 2000. Masters Thesis, Oregon State University. Accessed January 19, 2020. http://hdl.handle.net/1957/33783.

MLA Handbook (7^th Edition):

Schlegel, Stephen C. “A product development process measurement methodology applied to small manufacturing companies.” 2000. Web. 19 Jan 2020.

Vancouver:

Schlegel SC. A product development process measurement methodology applied to small manufacturing companies. [Internet] [Masters thesis]. Oregon State University; 2000. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/1957/33783.

Council of Science Editors:

Schlegel SC. A product development process measurement methodology applied to small manufacturing companies. [Masters Thesis]. Oregon State University; 2000. Available from: http://hdl.handle.net/1957/33783

Oregon State University

16. Smullin, Matteo M. An Information Modeling Framework and Desktop Application to Compose Unit Manufacturing Process Models for Sustainable Manufacturing Assessment.

Degree: MS, Industrial Engineering, 2016, Oregon State University

URL: http://hdl.handle.net/1957/60059

► The demand from consumers for more sustainable products, and the need to comply with government regulations motivates manufacturers to evaluate their operations for opportunities to… (more)

▼ The demand from consumers for more sustainable products, and the need to comply with government regulations motivates manufacturers to evaluate their operations for opportunities to reduce environmental impact and improve economic competitiveness. Manufacturers have actively improved the sustainability performance of their products through the use of sustainability assessment methods and tools. Recently however, manufacturers have struggled to maintain the necessary gains in energy and material efficiency due to the inadequacy of current, mature sustainability assessment methods and tools. This situation is compounded since new methods and tools continue to be developed for specialized applications, leading to inaccurate assessments in other domains. Overcoming these barriers requires standardized sustainability assessment methods and tools that are ready for use (plug-and-play) and contain accurate manufacturing process-level information. The research conducted herein posits that this barrier can be overcome through the advancement of information modeling and the automation of manufacturing system assessments. Thus, manufacturing process models would be composed to preserve information flows. Therefore, the work presented attempted three goals: 1) Assess the barriers to sustainable manufacturing through a review of the academic literature and roundtable meetings with industry; 2) Propose an information modeling framework to trace, capture, and control information flows within a composed manufacturing system for sustainability assessment; and 3) Develop a desktop application implementing the framework to accelerate the sustainability assessment of composed manufacturing systems. Results from realizing the framework through an underpinning XML Schema and overlaying graphical user interface indicate that the presented approach would be useful in conducting sustainable manufacturing assessments. Future work should focus on improving the robustness of the information framework and the resulting XML Schema by incorporating validation content and structure for improved quality and composability of unit manufacturing process models. Advisors/Committee Members: Haapala, Karl R. (advisor), Porter, David (committee member).

Subjects/Keywords: Information Model; Manufacturing processes – Automation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Smullin, M. M. (2016). An Information Modeling Framework and Desktop Application to Compose Unit Manufacturing Process Models for Sustainable Manufacturing Assessment. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/60059

Chicago Manual of Style (16^th Edition):

Smullin, Matteo M. “An Information Modeling Framework and Desktop Application to Compose Unit Manufacturing Process Models for Sustainable Manufacturing Assessment.” 2016. Masters Thesis, Oregon State University. Accessed January 19, 2020. http://hdl.handle.net/1957/60059.

MLA Handbook (7^th Edition):

Smullin, Matteo M. “An Information Modeling Framework and Desktop Application to Compose Unit Manufacturing Process Models for Sustainable Manufacturing Assessment.” 2016. Web. 19 Jan 2020.

Vancouver:

Smullin MM. An Information Modeling Framework and Desktop Application to Compose Unit Manufacturing Process Models for Sustainable Manufacturing Assessment. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/1957/60059.

Council of Science Editors:

Smullin MM. An Information Modeling Framework and Desktop Application to Compose Unit Manufacturing Process Models for Sustainable Manufacturing Assessment. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/60059

University of Wisconsin – Stout

17. Wink, Eric A. Proposed change of work in process (WIP) inventory for the polishing department at APN, Incorporated.

Degree: 2003, University of Wisconsin – Stout

URL: http://www.uwstout.edu/lib/thesis/2003/2003winke.pdf ; http://digital.library.wisc.edu/1793/41135

Subjects/Keywords: Manufacturing processes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wink, E. A. (2003). Proposed change of work in process (WIP) inventory for the polishing department at APN, Incorporated. (Thesis). University of Wisconsin – Stout. Retrieved from http://www.uwstout.edu/lib/thesis/2003/2003winke.pdf ; http://digital.library.wisc.edu/1793/41135

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wink, Eric A. “Proposed change of work in process (WIP) inventory for the polishing department at APN, Incorporated.” 2003. Thesis, University of Wisconsin – Stout. Accessed January 19, 2020. http://www.uwstout.edu/lib/thesis/2003/2003winke.pdf ; http://digital.library.wisc.edu/1793/41135.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wink, Eric A. “Proposed change of work in process (WIP) inventory for the polishing department at APN, Incorporated.” 2003. Web. 19 Jan 2020.

Vancouver:

Wink EA. Proposed change of work in process (WIP) inventory for the polishing department at APN, Incorporated. [Internet] [Thesis]. University of Wisconsin – Stout; 2003. [cited 2020 Jan 19]. Available from: http://www.uwstout.edu/lib/thesis/2003/2003winke.pdf ; http://digital.library.wisc.edu/1793/41135.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wink EA. Proposed change of work in process (WIP) inventory for the polishing department at APN, Incorporated. [Thesis]. University of Wisconsin – Stout; 2003. Available from: http://www.uwstout.edu/lib/thesis/2003/2003winke.pdf ; http://digital.library.wisc.edu/1793/41135

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

18. Husam, Shames. Development of a selection program for additive manufacturing systems.

Degree: Industrial Engineering, 2010, Stellenbosch University

URL: http://hdl.handle.net/10019.1/4336

►

Thesis (MScEng (Industrial Engineering)) – University of Stellenbosch, 2010

ENGLISH ABSTRACT: Additive Manufacturing (AM) refers to the technologies that use Computer Aided Design (CAD) data to… (more)

▼

Thesis (MScEng (Industrial Engineering)) – University of Stellenbosch, 2010

ENGLISH ABSTRACT: Additive Manufacturing (AM) refers to the technologies that use Computer Aided Design (CAD) data to produce plastic, metal, ceramic, paper, wax or composite materials parts. Their ability to join thin layers of liquid, powder or sheet materials together permits the production of parts, which are difficult or even impossible to produce, using any other manufacturing method. Even though these technologies are still developing, they are considered a major breakthrough in industry. One of the main problems that is facing the improvement and the spread of AM technologies, and its benefits worldwide, is the lack of knowledge about them. Still a lot of countries, educational and industrial organizations do not even know about AM technologies. This lack of knowledge of such technologies is keeping their cost artificially high, which is limiting the access to more AM advanced technologies and materials. It also makes it difficult to market the technologies and those who do not use AM technologies yet become unable to compete against those who do. The numbers of AM systems are continually growing, their capabilities and applications are improving and their cost is decreasing. Today there are more than 40 companies that produce over 100 different systems in Canada, China, France, Germany, Israel, Italy, Japan, South Korea, Sweden and the United States. These systems vary in their strengths, defects, applications, functions and limitations. This growth has led to an increase in current and potential users of AM from both the manufacturing and educational sectors. These users are however facing increasing complex problems when it comes to selecting the most appropriate commercial system(s) to suit their needs. The aim of this study is to develop an AM system selection program. The program will serve both as an educational tool and a decision making support tool to assist any potential purchasers in both the educational and industrial sectors. The AM system selection program is divided into two sections: the learning section and the selecting section. The learning section introduces the AM technologies by imparting knowledge to the new users; moreover, it inspires them to start using these technologies to get their benefits. Having a background in AM technologies enables the new users to make educated decisions and to discuss technical issues about the systems with the providers. The selecting section offers a decision making support tool to help the users to decide which system best suits their needs. This study can contribute to the promotion of AM technologies and their benefits worldwide, especially for the countries and organizations that have not yet used such technologies.

AFRIKAANSE OPSOMMING: Toevoegende vervaardiging verwys na al die tegnologie wat rekenaargesteunde ontwerp data gebruik om plastiek, metaal, keramiek, papier, saamgestelde materiale en waks parte te vervaardig. Die vermoë van…

Advisors/Committee Members: Dimitrov, D. M., Van der Merwe, A. F., University of Stellenbosch. Faculty of Engineering. Dept. of Industrial Engineering..

Subjects/Keywords: Industrial engineering; Manufacturing processes – Automation

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APA (6^th Edition):

Husam, S. (2010). Development of a selection program for additive manufacturing systems. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/4336

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Husam, Shames. “Development of a selection program for additive manufacturing systems.” 2010. Thesis, Stellenbosch University. Accessed January 19, 2020. http://hdl.handle.net/10019.1/4336.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Husam, Shames. “Development of a selection program for additive manufacturing systems.” 2010. Web. 19 Jan 2020.

Vancouver:

Husam S. Development of a selection program for additive manufacturing systems. [Internet] [Thesis]. Stellenbosch University; 2010. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10019.1/4336.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Husam S. Development of a selection program for additive manufacturing systems. [Thesis]. Stellenbosch University; 2010. Available from: http://hdl.handle.net/10019.1/4336

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Florida State University

19. Guo, Yong, 1977-. Efficient Mixed-Level Fractional Factorial Designs: Evaluation, Augmentation and Application.

Degree: PhD, Industrial and Manufacturing Engineering, 2006, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3910 ;

►

In general, a minimum aberration criterion is used to evaluate fractional factorial designs. This dissertation begins with a comprehensive review and comparison of minimum aberration… (more)

Subjects/Keywords: Manufacturing processes

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APA (6^th Edition):

Guo, Yong, 1. (2006). Efficient Mixed-Level Fractional Factorial Designs: Evaluation, Augmentation and Application. (Doctoral Dissertation). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3910 ;

Chicago Manual of Style (16^th Edition):

Guo, Yong, 1977-. “Efficient Mixed-Level Fractional Factorial Designs: Evaluation, Augmentation and Application.” 2006. Doctoral Dissertation, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-3910 ;.

MLA Handbook (7^th Edition):

Guo, Yong, 1977-. “Efficient Mixed-Level Fractional Factorial Designs: Evaluation, Augmentation and Application.” 2006. Web. 19 Jan 2020.

Vancouver:

Guo, Yong 1. Efficient Mixed-Level Fractional Factorial Designs: Evaluation, Augmentation and Application. [Internet] [Doctoral dissertation]. Florida State University; 2006. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3910 ;.

Council of Science Editors:

Guo, Yong 1. Efficient Mixed-Level Fractional Factorial Designs: Evaluation, Augmentation and Application. [Doctoral Dissertation]. Florida State University; 2006. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3910 ;

Rutgers University

20. Engisch, William E. Loss-in-weight feeding in continuous powder manufacturing.

Degree: PhD, Chemical and Biochemical Engineering, 2014, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/45245/

►

Processes involving granular material handling are found in many industries, such as pharmaceutical, chemical, catalyst, and food. Significant differences are observed, both between materials as… (more)

▼

Processes involving granular material handling are found in many industries, such as pharmaceutical, chemical, catalyst, and food. Significant differences are observed, both between materials as well as between handling methods. Often, special equipment has been developed to monitor, control, and feed these widely varied materials in order to enable the end user to continuously feed or dose the raw powder material so that it can be continuously processed, which has many advantages over batch processing. To address the difficulties of feeding granular materials, powder feeders are equipped with a variety of tooling that can be used for various rates and powders. Unfortunately most of the sizing and performance knowledge is internal to the feeding equipment manufacturers and is not generally available to the end-user. In this work, a method for evaluating feeding performance was developed, which allowed for testing that was independent of the type of feeder being evaluated. This method was applied to various feeders to characterize the feeders for the feeding of various powders. In addition, the effects of hopper refilling were quantified and investigated. Finally, the downstream effects were simulated. iii For each powder, the fluctuations caused during normal steady state feeding were minimized through tooling and feeder selection. The effects of refill were found to be considerably more significant than the fluctuations associated with steady state feeding. However, optimized refill schedules, easily reduced the deviations to more manageable levels. In continuous manufacturing systems, the feeders are a potential high risk to content uniformity. The implications of this are investigated from a overarching view of a pharmaceutical direct compression system with a specific focus on regulatory compliance and product quality. Regulatory compliance requires batch definition and raw material traceability, and solutions to both were investigated. The presented options for batch definition are based on the residence time distribution (RTD) of the system, which describes the dispersion of material across the interface between "batches". Raw material traceability was similarly investigated utilizing residence time distribution as a tool.

Advisors/Committee Members: Muzzio, Fernando J (chair), Ierapetritou, Marianthi (internal member), Ramachandran, Rohit (internal member), Kiang, San (outside member).

Subjects/Keywords: Granular materials; Manufacturing processes

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APA (6^th Edition):

Engisch, W. E. (2014). Loss-in-weight feeding in continuous powder manufacturing. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/45245/

Chicago Manual of Style (16^th Edition):

Engisch, William E. “Loss-in-weight feeding in continuous powder manufacturing.” 2014. Doctoral Dissertation, Rutgers University. Accessed January 19, 2020. https://rucore.libraries.rutgers.edu/rutgers-lib/45245/.

MLA Handbook (7^th Edition):

Engisch, William E. “Loss-in-weight feeding in continuous powder manufacturing.” 2014. Web. 19 Jan 2020.

Vancouver:

Engisch WE. Loss-in-weight feeding in continuous powder manufacturing. [Internet] [Doctoral dissertation]. Rutgers University; 2014. [cited 2020 Jan 19]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45245/.

Council of Science Editors:

Engisch WE. Loss-in-weight feeding in continuous powder manufacturing. [Doctoral Dissertation]. Rutgers University; 2014. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45245/

Florida State University

21. Shankar, Kadambala Ravi. Preparation and Characterization of Magnetically Aligned Carbon Nanotube Buckypaper and Composite.

Degree: MS, Industrial and Manufacturing Engineering, 2003, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3403 ;

►

Carbon nanotubes are theoretically one of the strongest and stiffest materials with a calculated tensile strength of ~200 giga Pascal and modulus of more than… (more)

▼

Carbon nanotubes are theoretically one of the strongest and stiffest materials with a calculated tensile strength of ~200 giga Pascal and modulus of more than 1-4 tera Pascal for a single walled nanotube (SWNT). If the mechanical properties of SWNT could be effectively incorporated into a polymer matrix, composites with lightweight, exceptional strength and stiffness can be achieved. The effective utilization of nanotubes in composites for applications depends on the ability to disperse the nanotubes uniformly throughout the matrix. Carbon nanotubes are anisotropic in nature. Therefore to take advantage of the nanotubes in the axial direction, controlled tube orientation or degree of alignment of nanotubes in the polymer matrix is very important to realize their high mechanical and functional properties. The nanocomposites produced by current conventional methods using direct mixing, melt blending or solution casting have failed to yield significant improvements in composite modulus. Although tremendous progress has been made towards understanding the properties of individual carbon nanotubes, but attaining the true potential of the bulk polymeric nanocomposites have been hindered by the lack of uniform SWNT dispersion, poor interfacial bonding, inadequate tube loading and uncontrollable tube orientation or degree of alignment. This thesis work developed an innovative approach for producing nanocomposites that has uniform SWNT dispersion, high tube loading and most importantly controlled tube orientation. In this research, these properties in composites were achieved by using magnetically aligned buckypapers and resin infusion system. The aligned nanotube buckypaper and composite were characterized using AFM and SEM. The mechanical properties of these materials were experimentally determined using DMA and were theoretically verified. The electrical properties of these materials were also experimentally determined using 4-probe resistivity measurements. Significant tube alignment has been achieved in the resultant buckypaper and nanocomposites. It is shown that the developed method is an effective way for producing nanocomposites with uniform SWNT dispersion desired tube alignment and high tube loading.

A Thesis submitted to the Department of Industrial Engineering in partial fulfillment of the requirements for the degree of Master of Science.

Fall Semester, 2003.

November 10, 2003.

Carbon, Nanotubes, SWNT Alignment, Composite, Polymer, Anisotropy, Resistivity, Nanocomposite

Zhiyong Liang, Professor Directing Thesis; Ben Wang, Committee Member; Chuck Zhang, Committee Member.

Advisors/Committee Members: Zhiyong Liang (professor directing thesis), Ben Wang (committee member), Chuck Zhang (committee member).

Subjects/Keywords: Manufacturing processes

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APA (6^th Edition):

Shankar, K. R. (2003). Preparation and Characterization of Magnetically Aligned Carbon Nanotube Buckypaper and Composite. (Masters Thesis). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3403 ;

Chicago Manual of Style (16^th Edition):

Shankar, Kadambala Ravi. “Preparation and Characterization of Magnetically Aligned Carbon Nanotube Buckypaper and Composite.” 2003. Masters Thesis, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-3403 ;.

MLA Handbook (7^th Edition):

Shankar, Kadambala Ravi. “Preparation and Characterization of Magnetically Aligned Carbon Nanotube Buckypaper and Composite.” 2003. Web. 19 Jan 2020.

Vancouver:

Shankar KR. Preparation and Characterization of Magnetically Aligned Carbon Nanotube Buckypaper and Composite. [Internet] [Masters thesis]. Florida State University; 2003. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3403 ;.

Council of Science Editors:

Shankar KR. Preparation and Characterization of Magnetically Aligned Carbon Nanotube Buckypaper and Composite. [Masters Thesis]. Florida State University; 2003. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3403 ;

Florida State University

22. Kim, Myungsoo. Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites.

Degree: PhD, Industrial and Manufacturing Engineering, 2009, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069 ;

►

Carbon nanotubes (CNTs) have excellent mechanical, electrical, and thermal properties making them outstanding reinforcements in polymer matrix composites. In this research, the effect of CNT-integration… (more)

▼

Carbon nanotubes (CNTs) have excellent mechanical, electrical, and thermal properties making them outstanding reinforcements in polymer matrix composites. In this research, the effect of CNT-integration in polymer matrices (two-phase) and fiber-reinforced composites (three-phase) was studied theoretically and experimentally. This work sought to enhance the mechanical properties of composites by the improving dispersion of CNTs in polymers. This was achieved by optimizing the CNT/polymer composite manufacturing process. Generally, higher sonication intensity and longer sonication time improved the mechanical properties of CNT/polymer composites through improved CNT dispersion. Simulations for CNT/polymer composites (nanocomposites) and CNT/fiber/polymer composites (multiscale composites) were successfully carried out using a new method that combines nanocomposites micromechanics and woven fiber micromechanics. With this new method, the mechanical properties, including the Young's modulus, Poisson's ratio, and shear modulus, of nanocomposites and multiscale composites were predicted in terms of CNT loading in a polymer. The relationships between the mechanical properties of the composites and aspect ratios of the CNTs were studied and, as the third part of the simulation, the mechanical properties of multiscale composites that have no CNTs in the fiber strands were compared with those of multiscale composites that have CNTs in the fiber strands. In order to compare the predicted mechanical properties obtained by the simulations, nano and multiscale composites were manufactured and characterized. Good dispersion of the CNTs and strong bonding between the CNTs and polymer matrix and fibers and matrix are necessary to improve the mechanical properties of nanocomposites and multiscale composites.

A Dissertation submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy.

Summer Semester, 2009.

April 3, 2009.

Carbon Nanotubes, Design of Experiments (DOE), Nanocomposites, Multiscale Composites, Mechanical Modeling

Okenwa I. Okoli, Professor Directing Dissertation; Sachin Shanbhag, Outside Committee Member; Young-Bin Park, Committee Member; Zhiyong Liang, Committee Member; David Jack, Committee Member.

Advisors/Committee Members: Okenwa I. Okoli (professor directing dissertation), Sachin Shanbhag (outside committee member), Young-Bin Park (committee member), Zhiyong Liang (committee member), David Jack (committee member).

Subjects/Keywords: Manufacturing processes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kim, M. (2009). Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites. (Doctoral Dissertation). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069 ;

Chicago Manual of Style (16^th Edition):

Kim, Myungsoo. “Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites.” 2009. Doctoral Dissertation, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069 ;.

MLA Handbook (7^th Edition):

Kim, Myungsoo. “Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites.” 2009. Web. 19 Jan 2020.

Vancouver:

Kim M. Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites. [Internet] [Doctoral dissertation]. Florida State University; 2009. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069 ;.

Council of Science Editors:

Kim M. Modeling, Manufacturing, and Characterization of Nanocomposites and Multiscale Composites. [Doctoral Dissertation]. Florida State University; 2009. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3069 ;

Florida State University

23. Kynard, Kristin. Pmma Carbon Nanotube Nanocomposite Foams for Energy Dissipation Applications.

Degree: MS, Industrial and Manufacturing Engineering, 2011, Florida State University

URL: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3037 ;

►

Nanomaterials have attracted a great deal of research efforts due to the potential unprecedented properties these materials may provide. Carbon nanotubes (CNTs) are of particular… (more)

▼

Nanomaterials have attracted a great deal of research efforts due to the potential unprecedented properties these materials may provide. Carbon nanotubes (CNTs) are of particular interest because of their exceptional mechanical, thermal and electrical properties. The purpose of this research is to develop poly (methyl methacrylate) (PMMA) carbon nanotubes (CNTs) nanocomposite foams with improved energy dissipation capabilities (toughness). PMMA CNTs nanocomposites were first synthesized by anti-solvent precipitation process (ASP). Nanocomposites with different CNTs concentrations were prepared. The dispersion of the CNTs in the polymer matrix was observed by scanning electron microscopy (SEM). Nanocomposite foams were prepared by a batch process using carbon dioxide as the foaming agent. The foaming was conducted from the retrograde phase that enabled high CO2 solubility and facilitated formation of foams of high bubble density and small bubble size. The effects of foaming temperature, foaming time and CNTs concentration on the foam expansion ratio was investigated. The morphology of the prepared foams was studied by SEM. The compressive properties of the foams were measured and toughness determined. The nanocomposite foams with 0.5% CNT show improvement in energy absorbing capabilities. Upon further increasing CNT concentration, the capability decreases. Further analysis revealed that this was due to the non-uniform foam morphology in those nanocomposite foams. This in turn resulted in from the mixed nucleation mechanisms because of the insufficient CNT dispersion when foamed from the retrograde phase. Enhancement of CNT dispersion in the matrix is needed in order to improve the uniformity of the foams and realize the potential of these materials.

A Thesis submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Master of Science.

Summer Semester, 2011.

June 30, 2011.

PMMA Nanocomposite Foams, Compressive Properties, Energy Absorbtion, Multi-walled Carbon Nanotubes

Changchun Zeng, Professor Directing Thesis; Okenwa Okoli, Committee Member; Arda Vanli, Committee Member.

Advisors/Committee Members: Changchun Zeng (professor directing thesis), Okenwa Okoli (committee member), Arda Vanli (committee member).

Subjects/Keywords: Industrial engineering; Manufacturing processes

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APA (6^th Edition):

Kynard, K. (2011). Pmma Carbon Nanotube Nanocomposite Foams for Energy Dissipation Applications. (Masters Thesis). Florida State University. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3037 ;

Chicago Manual of Style (16^th Edition):

Kynard, Kristin. “Pmma Carbon Nanotube Nanocomposite Foams for Energy Dissipation Applications.” 2011. Masters Thesis, Florida State University. Accessed January 19, 2020. http://purl.flvc.org/fsu/fd/FSU_migr_etd-3037 ;.

MLA Handbook (7^th Edition):

Kynard, Kristin. “Pmma Carbon Nanotube Nanocomposite Foams for Energy Dissipation Applications.” 2011. Web. 19 Jan 2020.

Vancouver:

Kynard K. Pmma Carbon Nanotube Nanocomposite Foams for Energy Dissipation Applications. [Internet] [Masters thesis]. Florida State University; 2011. [cited 2020 Jan 19]. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3037 ;.

Council of Science Editors:

Kynard K. Pmma Carbon Nanotube Nanocomposite Foams for Energy Dissipation Applications. [Masters Thesis]. Florida State University; 2011. Available from: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3037 ;

Rutgers University

24. Turkoz, Mehmet, 1984-. Distribution-free fault identification and anomaly detection in high-dimensional data.

Degree: PhD, Industrial and Systems Engineering, 2018, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/57741/

► Quality engineering is an essential activity in production processes and its objective is to ensure the quality of the products throughout the production stages. Many… (more)

▼ Quality engineering is an essential activity in production processes and its objective is to ensure the quality of the products throughout the production stages. Many processes have several attributes that need to be continuously monitored to detect any variable changes in the production process. We refer to the monitoring process with several quality characteristics as multivariate statistical process control (MSPC). Most of the quality control procedures assume that the characteristics of the process follow normal distributions; however, this is a limiting assumption since the underlying distribution of the processes may not be normal. In this dissertation, we present procedures to identify the faulty variables and detect anomalies in MSPC with high dimensional data when the underlying distribution of the process is unknown. We first propose a distribution-free adaptive step-down (DFASD) procedure, which is motivated by a well-known data description method called support vector data description (SVDD). This data description procedure includes the support vectors which identify the hypersphere boundary for the available data by using the kernel concept. In a high-dimensional process, identifying the variable or a subset of variables, which cause an out-of-control (OC) signal, is a challenging issue in quality engineering. DFASD procedure utilizes conditional statistics for the identification of faulty variables. The proposed DFASD procedure selects a variable having no significant evidence of a change at each step based on the variables that are selected in the previous steps. The proposed DFASD stops when there are no longer variables to classify to the unchanged set. Therefore, it concludes the variables which are not in the unchanged set as changed variables. We then present a new distribution-free fault identification procedure based on Bayesian inference which is called Bayesian SVDD (BSVDD). While the traditional SVDD assumes that the process parameters are constants to be determined, the center of hypersphere may be considered as a random vector with inherent randomness based on a given training dataset. We introduce a Bayesian approach for SVDD by assuming that a transformed data into the higher dimensional space follow normal distribution. A distance from a point to the center of the hypersphere is inversely proportional to the likelihood in the proposed model. This is because SVDD is a special case of the proposed BSVDD model, which improves SVDD by utilizing the precise prior knowledge. Therefore, by combining proposed BSVDD with an adaptive step-down procedure, we drive a new BSVDD based fault identification procedure for the MSPC. This is the first research to identify the faulty variables by using the distribution-free approach based on Bayesian inference. We also present an anomaly detection procedure which is easily applicable in detecting anomalies in multimode processes. Traditional quality control procedures assume that normal observations are obtained from a single distribution. However, due… Advisors/Committee Members: Jeong, Myong K. (chair), Elsayed, Elsayed A. (internal member), Pham, Hoang (internal member), Xie, Minge (outside member), School of Graduate Studies.

Subjects/Keywords: Manufacturing processes; Big data

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APA (6^th Edition):

Turkoz, Mehmet, 1. (2018). Distribution-free fault identification and anomaly detection in high-dimensional data. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/57741/

Chicago Manual of Style (16^th Edition):

Turkoz, Mehmet, 1984-. “Distribution-free fault identification and anomaly detection in high-dimensional data.” 2018. Doctoral Dissertation, Rutgers University. Accessed January 19, 2020. https://rucore.libraries.rutgers.edu/rutgers-lib/57741/.

MLA Handbook (7^th Edition):

Turkoz, Mehmet, 1984-. “Distribution-free fault identification and anomaly detection in high-dimensional data.” 2018. Web. 19 Jan 2020.

Vancouver:

Turkoz, Mehmet 1. Distribution-free fault identification and anomaly detection in high-dimensional data. [Internet] [Doctoral dissertation]. Rutgers University; 2018. [cited 2020 Jan 19]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/57741/.

Council of Science Editors:

Turkoz, Mehmet 1. Distribution-free fault identification and anomaly detection in high-dimensional data. [Doctoral Dissertation]. Rutgers University; 2018. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/57741/

Rutgers University

25. Wang, Zilong, 1989-. Simulation-based process analysis and optimization for continuous pharmaceutical manufacturing.

Degree: PhD, Chemical and Biochemical Engineering, 2018, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/57755/

►

This thesis explores to apply simulation-based mathematical tools to understand and improve continuous pharmaceutical manufacturing processes. On the basis of a continuous direct compaction process,… (more)

Subjects/Keywords: Pharmaceutical industry; Manufacturing processes

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APA (6^th Edition):

Wang, Zilong, 1. (2018). Simulation-based process analysis and optimization for continuous pharmaceutical manufacturing. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/57755/

Chicago Manual of Style (16^th Edition):

Wang, Zilong, 1989-. “Simulation-based process analysis and optimization for continuous pharmaceutical manufacturing.” 2018. Doctoral Dissertation, Rutgers University. Accessed January 19, 2020. https://rucore.libraries.rutgers.edu/rutgers-lib/57755/.

MLA Handbook (7^th Edition):

Wang, Zilong, 1989-. “Simulation-based process analysis and optimization for continuous pharmaceutical manufacturing.” 2018. Web. 19 Jan 2020.

Vancouver:

Wang, Zilong 1. Simulation-based process analysis and optimization for continuous pharmaceutical manufacturing. [Internet] [Doctoral dissertation]. Rutgers University; 2018. [cited 2020 Jan 19]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/57755/.

Council of Science Editors:

Wang, Zilong 1. Simulation-based process analysis and optimization for continuous pharmaceutical manufacturing. [Doctoral Dissertation]. Rutgers University; 2018. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/57755/

California State University – Sacramento

26. Clark, Edward C. Additive manufacturing of carbon composite panels for increased through-hole strength.

Degree: 2019, California State University – Sacramento

URL: http://hdl.handle.net/10211.3/214313

► Much of the development of fiber-reinforced composites for additive manufacturing has been efforts to meet or exceed the performance of traditionally processed metal alloys. Additive… (more)

Subjects/Keywords: Manufacturing processes; Three-dimensional printing

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APA (6^th Edition):

Clark, E. C. (2019). Additive manufacturing of carbon composite panels for increased through-hole strength. (Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.3/214313

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Clark, Edward C. “Additive manufacturing of carbon composite panels for increased through-hole strength.” 2019. Thesis, California State University – Sacramento. Accessed January 19, 2020. http://hdl.handle.net/10211.3/214313.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Clark, Edward C. “Additive manufacturing of carbon composite panels for increased through-hole strength.” 2019. Web. 19 Jan 2020.

Vancouver:

Clark EC. Additive manufacturing of carbon composite panels for increased through-hole strength. [Internet] [Thesis]. California State University – Sacramento; 2019. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10211.3/214313.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Clark EC. Additive manufacturing of carbon composite panels for increased through-hole strength. [Thesis]. California State University – Sacramento; 2019. Available from: http://hdl.handle.net/10211.3/214313

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Limerick

27. Obande, Winifred O. Mechanical characterisation of composite materials with 3D woven reinforcement architectures.

Degree: 2016, University of Limerick

URL: http://hdl.handle.net/10344/5596

► The use of traditional two-dimensional (2D) fibre preforms can be associated with poor out-of-plane and interlaminar mechanical performance, particularly in response to impact loads. Such… (more)

▼ The use of traditional two-dimensional (2D) fibre preforms can be associated with poor out-of-plane and interlaminar mechanical performance, particularly in response to impact loads. Such preforms comprise multiple plies which necessitate labour-intensive ply cutting and assembly steps. 3D woven textiles, due to the incorporation of through-thickness yarns, have been found to exhibit superior out-of-plane mechanical properties whilst simultaneously reducing ply-assembly time and cost (single-piece preform construction). Their delamination resistance and damage tolerance have been extensively investigated over the last number of years; however, there is a paucity of published work on their in-plane and out-of-plane mechanical properties when compared to their 2D counterparts. Thus, this research details a comprehensive mechanical characterisation of an orthogonal 3D woven composite in comparison with a suitable 2D laminate. Composite panels have been manufactured with Henkel’s Loctite BZ9130 benzoxazine resin by means of the EADS-patented vacuum assisted process (VAP®). In-plane compressive performance, impact damage resistance, damage tolerance, and out-of-plane tensile behaviour have been evaluated for both reinforcement architectures. Coupons were subjected to an energy level of 6 Joules per millimetre of laminate thickness by means of a drop-weight impact tower. Damage resistance was quantified as a function of impact damage area using penetrant-enhanced x-radiography (PEXR). Combined loading compression (CLC) tests were performed to complement compression after impact (CAI) testing which was conducted to evaluate the materials’ damage tolerance. Furthermore, out-of-plane tensile (OPT) testing has been performed on cruciform coupons using a novel test method. The experimental data revealed a 7.5% higher compressive strength for the 2D material, which was expected due to the presence of crimp and yarn misalignments within the 3D woven material. In contrast, the 3D material performed better than the 2D laminate for all other tests with 13% lower damage area, 15.5% higher residual compressive strength and 36.8% higher mean out-of-plane tensile strength. It can thus be concluded that the incorporation of through-thickness yarn components can lead to significant improvements in damage resistance and tolerance by arresting the growth of delamination and limiting the growth of localised damage. Furthermore, when loaded in the out-of-plane direction, as with the OPT test configuration, much of the load is borne by the z-binder bundles rather than the much weaker fibre-matrix interface (as is the case with 2D laminates), and consequently, the OPT strengths are higher in the 3D woven composites. Limitations of this test method have been identified and recommendations for further development are presented in the concluding remarks. Advisors/Committee Members: Stanley, Walter.

Subjects/Keywords: composite materials; manufacturing processes

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APA (6^th Edition):

Obande, W. O. (2016). Mechanical characterisation of composite materials with 3D woven reinforcement architectures. (Thesis). University of Limerick. Retrieved from http://hdl.handle.net/10344/5596

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Obande, Winifred O. “Mechanical characterisation of composite materials with 3D woven reinforcement architectures.” 2016. Thesis, University of Limerick. Accessed January 19, 2020. http://hdl.handle.net/10344/5596.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Obande, Winifred O. “Mechanical characterisation of composite materials with 3D woven reinforcement architectures.” 2016. Web. 19 Jan 2020.

Vancouver:

Obande WO. Mechanical characterisation of composite materials with 3D woven reinforcement architectures. [Internet] [Thesis]. University of Limerick; 2016. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10344/5596.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Obande WO. Mechanical characterisation of composite materials with 3D woven reinforcement architectures. [Thesis]. University of Limerick; 2016. Available from: http://hdl.handle.net/10344/5596

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of KwaZulu-Natal

28. [No author]. An automated apparatus for non-contact inspecting of mass produced custom products.

Degree: Mechanical engineering, 2009, University of KwaZulu-Natal

URL: http://hdl.handle.net/10413/251

► The evolution of the manufacturing industry may be viewed as proceeding from Dedicated Manufacturing Systems (DMS) to Reconfigurable Manufacturing Systems (RMS). Customer requirements change unpredictably,… (more)

▼ The evolution of the manufacturing industry may be viewed as proceeding from Dedicated Manufacturing Systems (DMS) to Reconfigurable Manufacturing Systems (RMS). Customer requirements change unpredictably, and so DMS are no longer able to meet modern manufacturing requirements. RMS are designed with the focus of providing rapid response to a change in product design, within specified part families. The movement from DMS to RMS facilitates mass-production of custom products. Custom parts require inspection routines that can facilitate variations in product parameters such as dimensions, shape, and throughputs. Quality control and part inspection are key processes in the lifecycle of a product. These processes are able to verify product quality; and can provide essential feedback for enhancing other processes. Mass-producing custom parts requires more complex and frequent quality control and inspection routines, than were implemented previously. Complex, and higher frequencies of inspection negatively impact inspection times, and inherently, production rates. For manufacturers to successfully mass-produce custom parts, processes which can perform complex and varying quality control operations need to be employed. Furthermore, such processes should perform inspections without significantly impacting production rates. A method of reducing the impact of high frequency inspection of customized parts on production rates is needed. This dissertation focuses on the research, design, construction, assembly, and testing of a Non- Contact Automated Inspection System (NCAIS). The NCAIS was focused on performing quality control operations whilst maintaining the maximum production rate of a particular Computer Integrated Manufacturing (CIM) cell. The CIM cell formed part of a research project in the School of Mechanical Engineering, University of KwaZulu-Natal; and was used to simulate mass-production of custom parts. Two methods of maintaining the maximum production rate were explored. The first method was the automated visual inspection of moving custom parts. The second method was to inspect only specified Regions of Interest (ROIs). Mechatronic engineering principles were used to integrate sensor articulation, image acquisition, and image processing systems. A specified maximum production rate was maintained during inspection, without stoppage of parts along the production line occurring. The results obtained may be expanded to specific manufacturing industries. Advisors/Committee Members: Bright, Glen (advisor).

Subjects/Keywords: Manufacturing processes – Safety measures.; Manufacturing processes – Automation.; Mechanical engineering.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

author], [. (2009). An automated apparatus for non-contact inspecting of mass produced custom products. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/251

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

author], [No. “An automated apparatus for non-contact inspecting of mass produced custom products. ” 2009. Thesis, University of KwaZulu-Natal. Accessed January 19, 2020. http://hdl.handle.net/10413/251.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

author], [No. “An automated apparatus for non-contact inspecting of mass produced custom products. ” 2009. Web. 19 Jan 2020.

Vancouver:

author] [. An automated apparatus for non-contact inspecting of mass produced custom products. [Internet] [Thesis]. University of KwaZulu-Natal; 2009. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10413/251.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

author] [. An automated apparatus for non-contact inspecting of mass produced custom products. [Thesis]. University of KwaZulu-Natal; 2009. Available from: http://hdl.handle.net/10413/251

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Nelson Mandela Metropolitan University

29. Kapeso, Mando Mulabita. An Internet of things model for field service automation.

Degree: Faculty of Science, 2017, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/18641

► Due to the competitive nature of the global economy, organisations are continuously seeking ways of cutting costs and increasing efficiency to gain a competitive advantage.… (more)

▼ Due to the competitive nature of the global economy, organisations are continuously seeking ways of cutting costs and increasing efficiency to gain a competitive advantage. Field service organisations that offer after sales support seek to gain a competitive advantage through downtime minimisation. Downtime is the time between service requests made by a customer or triggered by equipment failure and the completion of the service to rectify the problem by the field service team. Researchers have identified downtime as one of the key performance indicators for field service organisations. The lack of real-time access to information and inaccuracy of information are factors which contribute to the poor management of downtime. Various technology advancements have been adopted to address some of the challenges faced by field service organisations through automation. The emergence of an Internet of Things (IoT), has brought new enhancement possibilities to various industries, for instance, the manufacturing industry. The main research question that this study aims to address is “How can an Internet of Things be used to optimise field service automation?” The main research objective was to develop and evaluate a model for the optimisation of field services using an IoT’s features and technologies. The model aims at addressing challenges associated with the inaccuracy or/and lack of real-time access to information during downtime. The model developed is the theoretical artefact of the research methodology used in this study which is the Design Science Research Methodology (DSRM). The DSRM activities were adopted to fulfil the research objectives of this research. A literature review in the field services domain was conducted to establish the problems faced by field service organisations. Several interviews were held to verify the problems of FSM identified in literature and some potential solutions. During the design and development activity of the DSRM methodology, an IoT model for FSA was designed. The model consists of:The Four Layered Architecture; The Three Phase Data Flow Process; and Definition and descriptions of IoT-based elements and functions. The model was then used to drive the design, development, and evaluation of “proof of concept” prototype, the KapCha prototype. KapCha enables the optimisation of FSA using IoT techniques and features. The implementation of a sub-component of the KapCha system, in fulfilment of the research. The implementation of KapCha was applied to the context of a smart lighting environment in the case study. A two-phase evaluation was conducted to review both the theoretical model and the KapCha prototype. The model and KapCha prototype were evaluated using the Technical and Risk efficacy evaluation strategy from the Framework for Evaluation of Design Science (FEDS). The Technical Risk and Efficacy strategy made use of formative, artificial-summative and summative-naturalistic methods of evaluation. An artificial-summative evaluation was used to evaluate the design of the model.…

Subjects/Keywords: Internet of things; Manufacturing processes – Automation; Automation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kapeso, M. M. (2017). An Internet of things model for field service automation. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/18641

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kapeso, Mando Mulabita. “An Internet of things model for field service automation.” 2017. Thesis, Nelson Mandela Metropolitan University. Accessed January 19, 2020. http://hdl.handle.net/10948/18641.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kapeso, Mando Mulabita. “An Internet of things model for field service automation.” 2017. Web. 19 Jan 2020.

Vancouver:

Kapeso MM. An Internet of things model for field service automation. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2017. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10948/18641.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kapeso MM. An Internet of things model for field service automation. [Thesis]. Nelson Mandela Metropolitan University; 2017. Available from: http://hdl.handle.net/10948/18641

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Johannesburg

30. Keys, Vernon C. Capital investment appraisal in a process environment.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/6215

►

M.Ing.

As the manufacturing environment evolved over the past century, the nature of investments in manufacturing capabilities changed dramatically. Automation can be seen as the… (more)

▼

M.Ing.

As the manufacturing environment evolved over the past century, the nature of investments in manufacturing capabilities changed dramatically. Automation can be seen as the single biggest driver of this evolution; enabling the manufacturing fraternity to develop smarter technology in order to exploit the opportunities that were created by the volatility that exist in most markets. This lead to the development of flexible manufacturing technology. Constructing a definition of manufacturing flexibility is difficult mainly due to the various views and perspectives that exist of flexibility. In short, flexibility can be defined as the ability to react ( to any change ) with little penalty in time, effort, cost or performance. These technologies that enable a manufacturing system to be flexible in a certain manner are generally difficult to justify in terms of traditional financial yardsticks. This can be contributed to the diverse benefits to be gained from these investments; and often these benefits are of a nonfinancial nature. Furthermore, when reviewing investments in flexible manufacturing technology within a process environment there appears to be an even bigger problem. The relatively fixed nature of the design output of process equipment, and the enormous quantities of capital outlay initially required to erect and commission process plants, often makes it near impossible to justify any investment that does not deliver good financial returns within the short term. Thus it becomes clear that the traditional methods of investment appraisal within the process environment have become generally unsuitable; and this call for a re-evaluation of the processes applied to guide value adding investments. This study set out to deliver a logical approach to appraising investments in manufacturing flexibility by defining a framework to be applied. The proposed framework consists of the following 4 primary steps. Firstly the strategic direction followed by the business is defined; then an analysing of the manufacturing flexibility required is performed. The third step is to evaluate the manufacturing technology available and furthermore a suitable performance measured criteria is defined to evaluate the proposed investment. This model is set within the strategic context of the manufacturing strategy of a business and thus should ensure the development of manufacturing capabilities that will ensure business growth over the medium to long term.

Subjects/Keywords: Manufacturing processes - Automation - Economic aspects; Capital investments

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Keys, V. C. (2012). Capital investment appraisal in a process environment. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/6215

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Keys, Vernon C. “Capital investment appraisal in a process environment.” 2012. Thesis, University of Johannesburg. Accessed January 19, 2020. http://hdl.handle.net/10210/6215.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Keys, Vernon C. “Capital investment appraisal in a process environment.” 2012. Web. 19 Jan 2020.

Vancouver:

Keys VC. Capital investment appraisal in a process environment. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/10210/6215.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Keys VC. Capital investment appraisal in a process environment. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/6215

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations