subject:(Surface Roughness)

Brunel University

1. Pike-Wilson, Emily Alexandra. Flow boiling of R245fa in vertical small metallic tubes.

Degree: PhD, 2014, Brunel University

URL: http://bura.brunel.ac.uk/handle/2438/10625 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646251

► The research presented is part of a larger study, dedicated to investigating flow boiling in small to microchannels. The test facility, originally designed by Huo… (more)

▼ The research presented is part of a larger study, dedicated to investigating flow boiling in small to microchannels. The test facility, originally designed by Huo (2005) and since used by Chen (2006) and Mahmoud (2011), has been used to investigate flow boiling of R134a across a range of channel diameters and both seamless cold drawn and welded channels. These previous studies concluded that one of the reasons for discrepancies in reported data is the result of surface characteristics. The objective of this current study is to further investigate the effect of channel characteristics and changing the refrigerant to R245fa. Surface characteristics are investigated with stainless steel, copper and brass channels, all seamless cold drawn and 1.1 mm internal diameter. Experiments using R245fa were initially conducted in the same stainless steel channel used with R134a by Mahmoud (2011). This allowed for the surface characteristics to be negated and the comparison to be based purely on the changes in the thermophysical properties between R134a and R245fa. Experiments were conducted at inlet pressures of 1.85 and 2.45 bar, mass fluxes of 100 – 400 kg/m2s, heat fluxes from 1 – 60 kW/m2 and vapour qualities from 0 – 0.95. The test section surfaces were evaluated based on scanning electron microscopy (SEM) and confocal laser microscopy (CFLSM). SEM allowed for a visual inspection of the channel surface, with clear differences in the surface stricter evident. The surfaces were then compared based on two CFLSM profilers. The values of the surface parameters differed between the two profilers but the same trend was seen, brass being the roughest surface and copper the smoothest. Changes in the surface parameter values were found to be a function of the scan area, scan resolution and cut-off value. A borosilicate glass tube, at the test section exit, allowed for flow visualisation. Mahmoud (2011) reported bubbly, slug, churn and annular flow for R134a, with no effect of hysteresis. Churn and annular flow were present for R245fa with an increasing heat flux. This was a result of a higher surface tension for R245fa which facilitates annular flow. Hysteresis was evident for R245fa, with bubbly, slug, churn and annular flow seen with a decreasing heat flux. The hysteresis effect is a result of nucleation sites activating during the increase in heat flux and remaining activated as the heat flux is decreased. The activation of nucleation sites depends on the size, which was constant due to the same channel being used, and the wall superheat. The wall superheat is lower for R245fa which does not allow for the nucleation sites to be initially activated with an increasing heat flux. The same effect of hysteresis was evident for copper and brass. Differences in the exit vapour quality and heat flux at which flow patterns occurred were seen between the three materials. The heat transfer coefficient varied in both magnitude and trend between R134a and R245fa. Mahmoud (2011) reported an almost constant heat transfer coefficient with vapour…

Subjects/Keywords: 671.7; Surface roughness

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APA (6^th Edition):

Pike-Wilson, E. A. (2014). Flow boiling of R245fa in vertical small metallic tubes. (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/10625 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646251

Chicago Manual of Style (16^th Edition):

Pike-Wilson, Emily Alexandra. “Flow boiling of R245fa in vertical small metallic tubes.” 2014. Doctoral Dissertation, Brunel University. Accessed April 10, 2021. http://bura.brunel.ac.uk/handle/2438/10625 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646251.

MLA Handbook (7^th Edition):

Pike-Wilson, Emily Alexandra. “Flow boiling of R245fa in vertical small metallic tubes.” 2014. Web. 10 Apr 2021.

Vancouver:

Pike-Wilson EA. Flow boiling of R245fa in vertical small metallic tubes. [Internet] [Doctoral dissertation]. Brunel University; 2014. [cited 2021 Apr 10]. Available from: http://bura.brunel.ac.uk/handle/2438/10625 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646251.

Council of Science Editors:

Pike-Wilson EA. Flow boiling of R245fa in vertical small metallic tubes. [Doctoral Dissertation]. Brunel University; 2014. Available from: http://bura.brunel.ac.uk/handle/2438/10625 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646251

Ryerson University

2. Nourghassemi, Behnam. Surface roughness estimation for FDM systems.

Degree: 2011, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1312

► By selecting the optimal build angle, the surface roughness of rapid prototyped parts can be minimized. The objective of this study is to develop a… (more)

Subjects/Keywords: Rapid prototyping; Rapid prototyping – Testing; Surface roughness – Mathematical models; Surface roughness – Measurement; Surface roughness

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APA (6^th Edition):

Nourghassemi, B. (2011). Surface roughness estimation for FDM systems. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1312

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):

Nourghassemi, Behnam. “Surface roughness estimation for FDM systems.” 2011. Thesis, Ryerson University. Accessed April 10, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1312.

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

MLA Handbook (7^th Edition):

Nourghassemi, Behnam. “Surface roughness estimation for FDM systems.” 2011. Web. 10 Apr 2021.

Vancouver:

Nourghassemi B. Surface roughness estimation for FDM systems. [Internet] [Thesis]. Ryerson University; 2011. [cited 2021 Apr 10]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1312.

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

Council of Science Editors:

Nourghassemi B. Surface roughness estimation for FDM systems. [Thesis]. Ryerson University; 2011. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1312

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

Anna University

3. Elango V. Studies on surface roughness evaluation using machine vision;.

Degree: surface roughness evaluation using machine vision, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/27185

►

Surface finish of work piece enhances the appearance and overall newlinequality of the component The properties of the surface can significantly newlineaffect friction wear fatigue… (more)

Subjects/Keywords: machine vision; surface roughness

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APA (6^th Edition):

V, E. (2014). Studies on surface roughness evaluation using machine vision;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/27185

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):

V, Elango. “Studies on surface roughness evaluation using machine vision;.” 2014. Thesis, Anna University. Accessed April 10, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/27185.

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

MLA Handbook (7^th Edition):

V, Elango. “Studies on surface roughness evaluation using machine vision;.” 2014. Web. 10 Apr 2021.

Vancouver:

V E. Studies on surface roughness evaluation using machine vision;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 10]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27185.

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

Council of Science Editors:

V E. Studies on surface roughness evaluation using machine vision;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27185

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

Kansas State University

4. Kulkarni, Sanket S. Machining assessment of nano-crystalline hydroxyapatite bio-ceramic.

Degree: MS, Department of Industrial & Manufacturing Systems Engineering, 2011, Kansas State University

URL: http://hdl.handle.net/2097/13124

► The demand of synthetic implants for good quality of life is high and increasing continuously due to limitations of autogenous bone grafting. Development of various… (more)

▼ The demand of synthetic implants for good quality of life is high and increasing continuously due to limitations of autogenous bone grafting. Development of various synthetic bio materials and their manufacturing methods in the fields of orthopedics and dentistry has been done and still under way. Close physical properties with human bone make sintered hydroxyapatite (HAP) a suitable bioceramic material for hard tissue replacement. Newly developed fully dense nanocrystalline hydroxyapatite (nHAP) bioceramic has better mechanical properties than porous hydroxyapatite and has potential to be used alone, without metallic support in certain applications. When being used as implant devices in the human body, the nHAP bioceramic needs to be machined to the closest possible configuration with minimal surface roughness. This study investigates the machinability of nHAP bioceramic in milling operations. Efforts are focused on the effects of various machining conditions on surface integrity. Surface roughness is measured using a surface profilometer and the machined surface is observed using an optical microscope and a scanning electron microscope (SEM). Chip morphology and tool wear are examined using an optical microscope. Machined surface analysis showed that the surface integrity was good and the required surface roughness value (R[alpha]) of 1 - 1.5 [mu]m was achieved in many experiments. It was found that material removal is caused by brittle fracture without plastic flow. A first order surface roughness model for the end milling of nHAP under dry condition has been described. The mathematical model for surface roughness has been developed based on the cutting parameters: cutting speed, feed and depth of cut. The effects of these parameters on surface roughness have been studied using factorial designs and response surface method. Model analysis showed that all three cutting parameters have significant effect on surface roughness. However the current model has limited statistical power for prediction purposes and it demands a higher order model for accurate prediction of surface roughness value. Advisors/Committee Members: Shuting LeiMalgorzata Rys.

Subjects/Keywords: Surface roughness; Engineering (0537)

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APA (6^th Edition):

Kulkarni, S. S. (2011). Machining assessment of nano-crystalline hydroxyapatite bio-ceramic. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/13124

Chicago Manual of Style (16^th Edition):

Kulkarni, Sanket S. “Machining assessment of nano-crystalline hydroxyapatite bio-ceramic.” 2011. Masters Thesis, Kansas State University. Accessed April 10, 2021. http://hdl.handle.net/2097/13124.

MLA Handbook (7^th Edition):

Kulkarni, Sanket S. “Machining assessment of nano-crystalline hydroxyapatite bio-ceramic.” 2011. Web. 10 Apr 2021.

Vancouver:

Kulkarni SS. Machining assessment of nano-crystalline hydroxyapatite bio-ceramic. [Internet] [Masters thesis]. Kansas State University; 2011. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/2097/13124.

Council of Science Editors:

Kulkarni SS. Machining assessment of nano-crystalline hydroxyapatite bio-ceramic. [Masters Thesis]. Kansas State University; 2011. Available from: http://hdl.handle.net/2097/13124

Nelson Mandela Metropolitan University

5. Zvikomborero, Hweju. Adaptive Neuro-Fuzzy Inference System modelling of surface topology in ultra-high precision diamond turning of rapidly solidified aluminium grade (RSA 443).

Degree: Faculty of Engineering, the Built Environment and Technology, 2020, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/49441

► Surface roughness prediction is a crucial stage during product manufacturing since it acts as a quality indicator. This investigative research thesis presents an online surface… (more)

Subjects/Keywords: Mechatronics; Surface roughness – Measurement

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APA (6^th Edition):

Zvikomborero, H. (2020). Adaptive Neuro-Fuzzy Inference System modelling of surface topology in ultra-high precision diamond turning of rapidly solidified aluminium grade (RSA 443). (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/49441

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):

Zvikomborero, Hweju. “Adaptive Neuro-Fuzzy Inference System modelling of surface topology in ultra-high precision diamond turning of rapidly solidified aluminium grade (RSA 443).” 2020. Thesis, Nelson Mandela Metropolitan University. Accessed April 10, 2021. http://hdl.handle.net/10948/49441.

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

MLA Handbook (7^th Edition):

Zvikomborero, Hweju. “Adaptive Neuro-Fuzzy Inference System modelling of surface topology in ultra-high precision diamond turning of rapidly solidified aluminium grade (RSA 443).” 2020. Web. 10 Apr 2021.

Vancouver:

Zvikomborero H. Adaptive Neuro-Fuzzy Inference System modelling of surface topology in ultra-high precision diamond turning of rapidly solidified aluminium grade (RSA 443). [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2020. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10948/49441.

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

Council of Science Editors:

Zvikomborero H. Adaptive Neuro-Fuzzy Inference System modelling of surface topology in ultra-high precision diamond turning of rapidly solidified aluminium grade (RSA 443). [Thesis]. Nelson Mandela Metropolitan University; 2020. Available from: http://hdl.handle.net/10948/49441

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

Iowa State University

6. Ren, Jing. Micro/nano scale surface roughness tailoring and its effect on microfluidic flow.

Degree: 2013, Iowa State University

URL: https://lib.dr.iastate.edu/etd/13562

► The rapid growth of applications of lab-on-chip and bio-MEMES (Micro-electro-mechanical systems), arranging from cell culture and drug delivery to the microscale energy harvesting, microelectronics cooling,… (more)

Subjects/Keywords: flow perturbation; glass roughness; microfluidic; surface roughness; surface tailoring; Engineering

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APA (6^th Edition):

Ren, J. (2013). Micro/nano scale surface roughness tailoring and its effect on microfluidic flow. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/13562

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):

Ren, Jing. “Micro/nano scale surface roughness tailoring and its effect on microfluidic flow.” 2013. Thesis, Iowa State University. Accessed April 10, 2021. https://lib.dr.iastate.edu/etd/13562.

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

MLA Handbook (7^th Edition):

Ren, Jing. “Micro/nano scale surface roughness tailoring and its effect on microfluidic flow.” 2013. Web. 10 Apr 2021.

Vancouver:

Ren J. Micro/nano scale surface roughness tailoring and its effect on microfluidic flow. [Internet] [Thesis]. Iowa State University; 2013. [cited 2021 Apr 10]. Available from: https://lib.dr.iastate.edu/etd/13562.

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

Council of Science Editors:

Ren J. Micro/nano scale surface roughness tailoring and its effect on microfluidic flow. [Thesis]. Iowa State University; 2013. Available from: https://lib.dr.iastate.edu/etd/13562

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

University of North Texas

7. Sadeghpour, Nima. The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets.

Degree: 2014, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc700094/

► In this study the author reports the effects of surface roughness on dynamic behavior of water droplets on different types of rough structures. First, the… (more)

Subjects/Keywords: surface roughness; water droplets; dynamic behavior; geometry; Wetting.; Surface roughness.; Microfluidics.

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APA (6^th Edition):

Sadeghpour, N. (2014). The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc700094/

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):

Sadeghpour, Nima. “The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets.” 2014. Thesis, University of North Texas. Accessed April 10, 2021. https://digital.library.unt.edu/ark:/67531/metadc700094/.

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

MLA Handbook (7^th Edition):

Sadeghpour, Nima. “The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets.” 2014. Web. 10 Apr 2021.

Vancouver:

Sadeghpour N. The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets. [Internet] [Thesis]. University of North Texas; 2014. [cited 2021 Apr 10]. Available from: https://digital.library.unt.edu/ark:/67531/metadc700094/.

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

Council of Science Editors:

Sadeghpour N. The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets. [Thesis]. University of North Texas; 2014. Available from: https://digital.library.unt.edu/ark:/67531/metadc700094/

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

Baylor University

8. Tecson, Joshua Logan. Convective heat transfer from realistic ice roughness distributions.

Degree: M.S.M.E., Mechanical Engineering., 2013, Baylor University

URL: http://hdl.handle.net/2104/8757

► As supercooled water droplets impinge the surfaces of in-flight aircraft, a layer of accreted ice will form. In the initial stages of the accretion process,… (more)

Subjects/Keywords: Convective heat transfer.; Aircraft icing.; Ice roughness.; Surface roughness.

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APA (6^th Edition):

Tecson, J. L. (2013). Convective heat transfer from realistic ice roughness distributions. (Masters Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/8757

Chicago Manual of Style (16^th Edition):

Tecson, Joshua Logan. “Convective heat transfer from realistic ice roughness distributions.” 2013. Masters Thesis, Baylor University. Accessed April 10, 2021. http://hdl.handle.net/2104/8757.

MLA Handbook (7^th Edition):

Tecson, Joshua Logan. “Convective heat transfer from realistic ice roughness distributions.” 2013. Web. 10 Apr 2021.

Vancouver:

Tecson JL. Convective heat transfer from realistic ice roughness distributions. [Internet] [Masters thesis]. Baylor University; 2013. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/2104/8757.

Council of Science Editors:

Tecson JL. Convective heat transfer from realistic ice roughness distributions. [Masters Thesis]. Baylor University; 2013. Available from: http://hdl.handle.net/2104/8757

9. Siddaiah, Arpith. Understanding the Tribocorrosion Behavior of Engineered Surfaces.

Degree: 2020, University of Nevada – Reno

URL: http://hdl.handle.net/11714/7555

► Wear and corrosion are the most common forms of degradation in automobiles, ships, aircraft, biomedical implants, industrial machinery, and other mechanical systems. The dependence of… (more)

▼ Wear and corrosion are the most common forms of degradation in automobiles, ships, aircraft, biomedical implants, industrial machinery, and other mechanical systems. The dependence of these mechanical systems on tribological contacts accounts for a global economic wear loss of US300 billion USD (2017) annually. The losses from fiction and wear are estimated to be 73% and 27%, respectively. Additionally, the global cost of corrosion is estimated to be US2,505 billion, which is equivalent to 3.4% of the global Gross Domestic Product (GDP 2013). Today, with advanced manufacturing and surface processing techniques, it is possible to render a surface functionally resistant to wear or corrosion. A major drawback of such functionalization is that the processing specifically enhances resistance to either wear or corrosion, however, the action of wear and corrosion can lead to a wear-corrosion synergistic degradation, which has been scarcely understood. When functional surfaces are in relative sliding motion in a lubricated environment, they undergo wear and corrosion over extended periods of operation. The oxide layer formed as a result of corrosion is mechanically removed during sliding, thereby exposing a fresh layer of metal to degrade by wear and corrosion. The cycle of synergism between wear and corrosion is called tribocorrosion. The onset of tribocorrosion causes material degradation to occur faster than the action of either wear or corrosion alone. Understanding and characterizing the mechanism of tribocorrosion in various mechanical systems is complicated due to the variability in surface characteristics, lubricants, and tribo-interface conditions. This has also made it challenging to develop a stable wear-corrosion synergism monitoring system and tribocorrosion resistant surfaces for oil and aqueous environments.In the present study, an experimental module to monitor tribocorrosion in-situ is designed and implemented to measure the tribocorrosion behavior of various surface characteristics, lubricants, and tribo-interface conditions. A focus is placed on understanding the mechanism of tribocorrosion and designing surfaces with enhanced tribocorrosion resistance. The effect of surface engineering methods, such as textures and coatings on tribocorrosion, are investigated. More specifically, the surface engineering methods include surface processing using laser shock peening (LSP) on steel and magnesium alloys, and nanocomposite coatings on surfaces using Nickel-Graphene. The environmental conditions include aqueous environments that simulate seawater conditions. The study investigates the mechanochemical and physicochemical behavior of surface characteristics after modification to understand the mechanism of tribocorrosion. The effect of LSP intensity on wear, corrosion, tribocorrosion, surface roughness, and surface energy is discussed, and phenomenological models are proposed. The observed correlation between surface roughness, surface energy, and wear-corrosion synergism in defining the tribocorrosion mechanism… Advisors/Committee Members: Menezes, Pradeep L. (advisor), Liao, Yiliang (committee member), Li, Bin (committee member), Xiong, Guoping (committee member), Ramachandran, Rahul (committee member), Misra, Manoranjan (committee member).

Subjects/Keywords: friction; surface energy; surface engineering; surface roughness; tribocorrosion; wear

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APA (6^th Edition):

Siddaiah, A. (2020). Understanding the Tribocorrosion Behavior of Engineered Surfaces. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/7555

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):

Siddaiah, Arpith. “Understanding the Tribocorrosion Behavior of Engineered Surfaces.” 2020. Thesis, University of Nevada – Reno. Accessed April 10, 2021. http://hdl.handle.net/11714/7555.

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

MLA Handbook (7^th Edition):

Siddaiah, Arpith. “Understanding the Tribocorrosion Behavior of Engineered Surfaces.” 2020. Web. 10 Apr 2021.

Vancouver:

Siddaiah A. Understanding the Tribocorrosion Behavior of Engineered Surfaces. [Internet] [Thesis]. University of Nevada – Reno; 2020. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/11714/7555.

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

Council of Science Editors:

Siddaiah A. Understanding the Tribocorrosion Behavior of Engineered Surfaces. [Thesis]. University of Nevada – Reno; 2020. Available from: http://hdl.handle.net/11714/7555

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

10. 伊東, 優樹. Influence of plasma treatment on surface properties of zirconia : プラズマ処理がジルコニアの表面性状に与える影響.

Degree: 博士（歯学）, 2017, Osaka Dental University / 大阪歯科大学

URL: http://id.nii.ac.jp/1392/00000129/

►

We investigated the influence of atmospheric-pressure low-temperature plasma treatment on the surface properties of zirconia. After polishing zirconia sections up to800 with a waterproof abrasive… (more)

Subjects/Keywords: Plasma treatment; Contact angle; Surface roughness; XPS

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APA (6^th Edition):

伊東, �. (2017). Influence of plasma treatment on surface properties of zirconia : プラズマ処理がジルコニアの表面性状に与える影響. (Thesis). Osaka Dental University / 大阪歯科大学. Retrieved from http://id.nii.ac.jp/1392/00000129/

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):

伊東, 優樹. “Influence of plasma treatment on surface properties of zirconia : プラズマ処理がジルコニアの表面性状に与える影響.” 2017. Thesis, Osaka Dental University / 大阪歯科大学. Accessed April 10, 2021. http://id.nii.ac.jp/1392/00000129/.

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

MLA Handbook (7^th Edition):

伊東, 優樹. “Influence of plasma treatment on surface properties of zirconia : プラズマ処理がジルコニアの表面性状に与える影響.” 2017. Web. 10 Apr 2021.

Vancouver:

伊東 �. Influence of plasma treatment on surface properties of zirconia : プラズマ処理がジルコニアの表面性状に与える影響. [Internet] [Thesis]. Osaka Dental University / 大阪歯科大学; 2017. [cited 2021 Apr 10]. Available from: http://id.nii.ac.jp/1392/00000129/.

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

Council of Science Editors:

伊東 �. Influence of plasma treatment on surface properties of zirconia : プラズマ処理がジルコニアの表面性状に与える影響. [Thesis]. Osaka Dental University / 大阪歯科大学; 2017. Available from: http://id.nii.ac.jp/1392/00000129/

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

University of Saskatchewan

11. Elemuren, Raheem. Erosion-corrosion of carbon steel and duplex stainless steel elbows in potash brine-sand slurry.

Degree: 2020, University of Saskatchewan

URL: http://hdl.handle.net/10388/12777

► Carbon and low alloy steel pipes are widely used to transport slurries in the mining and mineral processing industry because of their good mechanical properties… (more)

▼ Carbon and low alloy steel pipes are widely used to transport slurries in the mining and mineral processing industry because of their good mechanical properties and relative affordability. However, the exposed internal walls of these pipes are prone to erosion-corrosion damage, which can lead to product leakage and eventual failure of the piping system. The purpose of this research is to evaluate the performance of AISI 1018 carbon steel and AISI 2205 duplex stainless steel elbows to erosion-corrosion damage in a saturated potash brine-sand slurry. Erosion-corrosion tests were conducted in a flow loop using a slurry consisting of saturated potash brine-sand slurry. Flow velocity and particle concentration were varied, but the slurry temperature was kept constant at 30 ± 1 °C. The synergistic effect of corrosion and erosion during erosion-corrosion was evaluated by conducting corrosion and erosion tests using particle-free saturated potash brine and deaerated slurry, respectively. The elbow surfaces before and after exposure to different test conditions were characterized using a scanning electron microscope, optical profilometer, Vickers micro-hardness tester, X-ray photoelectron spectroscopy, Raman spectroscopy, X-ray diffraction, and electron-backscattered diffraction. The results of these study revealed that the synergy between corrosion and erosion accelerated erosion-corrosion rates for the exposed carbon steel elbows. Microstructural examination showed that mechanical wear, in conjunction with pitting corrosion, played a substantial role in removing materials from the exposed surfaces of carbon steel elbows, especially at low slurry flow velocity. Raman and X-ray spectroscopic studies indicated that the corrosion products found inside the pits of the exposed carbon steel elbow are FeOOH, Fe2O3 and Fe3O4. This confirms the oxidation of iron during erosion-corrosion in saturated potash brine slurry. Furthermore, mechanical wear was the sole material removal mechanism for the duplex stainless steel elbows, which indicate that the combined effects of corrosion and erosion did not influence erosion-corrosion rates. X-ray and electron-backscattered diffraction techniques revealed that some austenite phase of the duplex stainless steel transformed to martensite after particle impacts at high velocity. The exceptionally high hardness and brittleness of martensite accelerated the removal of materials from the duplex stainless steel surface by brittle chipping. Plastic deformation due to particle impingement occurred up to about 4 μm below the exposed elbow surface. Advisors/Committee Members: Odeshi, Akindele, McWalter, Emily, Yang, Qiaoqin, Evitts, Richard, Oguocha, Ike.

Subjects/Keywords: Erosion-corrosion; Wear; Synergy; Surface roughness

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APA (6^th Edition):

Elemuren, R. (2020). Erosion-corrosion of carbon steel and duplex stainless steel elbows in potash brine-sand slurry. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12777

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):

Elemuren, Raheem. “Erosion-corrosion of carbon steel and duplex stainless steel elbows in potash brine-sand slurry.” 2020. Thesis, University of Saskatchewan. Accessed April 10, 2021. http://hdl.handle.net/10388/12777.

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

MLA Handbook (7^th Edition):

Elemuren, Raheem. “Erosion-corrosion of carbon steel and duplex stainless steel elbows in potash brine-sand slurry.” 2020. Web. 10 Apr 2021.

Vancouver:

Elemuren R. Erosion-corrosion of carbon steel and duplex stainless steel elbows in potash brine-sand slurry. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10388/12777.

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

Council of Science Editors:

Elemuren R. Erosion-corrosion of carbon steel and duplex stainless steel elbows in potash brine-sand slurry. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/12777

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

Texas A&M University

12. Zhang, Jianing. An Investigation of Light Scattering by Irregular Ice Crystals via PSTD.

Degree: MS, Atmospheric Sciences, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/153636

► We implement the Pseudo-Spectral Time Domain(PSTD) algorithm with Convolutional Perfect Matched Layer(CPML). Comparisons were conducted to test its performance with Mie's method. Results illustrate its… (more)

Subjects/Keywords: PSTD; CPML; Surface roughness; Light scattering

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APA (6^th Edition):

Zhang, J. (2014). An Investigation of Light Scattering by Irregular Ice Crystals via PSTD. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153636

Chicago Manual of Style (16^th Edition):

Zhang, Jianing. “An Investigation of Light Scattering by Irregular Ice Crystals via PSTD.” 2014. Masters Thesis, Texas A&M University. Accessed April 10, 2021. http://hdl.handle.net/1969.1/153636.

MLA Handbook (7^th Edition):

Zhang, Jianing. “An Investigation of Light Scattering by Irregular Ice Crystals via PSTD.” 2014. Web. 10 Apr 2021.

Vancouver:

Zhang J. An Investigation of Light Scattering by Irregular Ice Crystals via PSTD. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1969.1/153636.

Council of Science Editors:

Zhang J. An Investigation of Light Scattering by Irregular Ice Crystals via PSTD. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153636

Penn State University

13. Evans, Neal. Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data over smooth and rough surfaces in pipe flow .

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/12344

► The vibration response of a thin cylindrical shell excited by fully-developed turbulent pipe flow is measured and used to extract the fluctuating pressure levels generated… (more)

Subjects/Keywords: low-wavenumber; turbulent boundary layer; surface roughness

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APA (6^th Edition):

Evans, N. (2011). Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data over smooth and rough surfaces in pipe flow . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/12344

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):

Evans, Neal. “Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data over smooth and rough surfaces in pipe flow .” 2011. Thesis, Penn State University. Accessed April 10, 2021. https://submit-etda.libraries.psu.edu/catalog/12344.

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

MLA Handbook (7^th Edition):

Evans, Neal. “Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data over smooth and rough surfaces in pipe flow .” 2011. Web. 10 Apr 2021.

Vancouver:

Evans N. Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data over smooth and rough surfaces in pipe flow . [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 10]. Available from: https://submit-etda.libraries.psu.edu/catalog/12344.

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

Council of Science Editors:

Evans N. Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data over smooth and rough surfaces in pipe flow . [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/12344

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

Delft University of Technology

14. Kapoor, P. (author). Influence of Engineered Roughness on the Flow Instabilities in a Centrifugal Compressor.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:bfb6a4c7-1c60-472c-858e-bc519fc46521

►

Centrifugal compressors form an integral part of automotive turbochargers. Strict emission regulations and increased engine downsizing in the automotive industry are pushing the turbocharger centrifugal… (more)

▼

Centrifugal compressors form an integral part of automotive turbochargers. Strict emission regulations and increased engine downsizing in the automotive industry are pushing the turbocharger centrifugal compressors to provide the charged air at very lower mass flow rates. However, at low mass flow rates, the operation and application of centrifugal compressors for a given turbocharger is limited by the fluid dynamic instabilities. These flow instabilities cause the compressor to enter the state of stall and/or surge. Stall defines the lower limit of stable operating range for the compression system. The suppression of this flow instability is a key research focus of turbomachinery aerodynamics. In this thesis, an attempt has been made to reduce the compressor instability and subsequently increase the surge margin by the application of engineered roughness on different compressor parts. The analysis has been split into two parts. Firstly, CFD analysis have been carried out on several test cases to validate the reliability of the commercial solver. The comparison of the CFD results with the available reference data shows a reasonable agreement in terms of prediction of laminar to turbulent transition location and influence of wall roughness on transition onset location. Secondly, a detailed CFD analysis of the centrifugal compressor has been made in two phases. In the first phase, the overall compressor performance has been simulated from stall to choke over a specific turbocharger rotational speed. In the second phase, a parametric roughness study has been carried out by considering the effects of predefined wall roughness and localized roughness strips on the unstable flow in the compressor at low mass flow rates. For the wall roughness evaluation, the roughness has been applied on the impeller blades, impeller shroud, diffuser and inlet shroud. On the other hand, for the localized roughness strips, roughness have been defined at specific locations at the main blade suction side and the diffuser shroud. The analysis reveals a reduction in flow instability in the compressor domain. The steady state simulations show a significant improvement in the flow structure of the diffuser in terms of the reduction in flow reversal. Furthermore, an improvement in the impeller is observed by reduction in the low momentum wake region.

Process and Energy Technology

Mechanical, Maritime and Materials Engineering

Advisors/Committee Members: Pecnik, R. (mentor), Javed, A. (mentor).

Subjects/Keywords: CFD; Centrifugal Compressors; Performance Optimization; Surface Roughness

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APA (6^th Edition):

Kapoor, P. (. (2014). Influence of Engineered Roughness on the Flow Instabilities in a Centrifugal Compressor. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:bfb6a4c7-1c60-472c-858e-bc519fc46521

Chicago Manual of Style (16^th Edition):

Kapoor, P (author). “Influence of Engineered Roughness on the Flow Instabilities in a Centrifugal Compressor.” 2014. Masters Thesis, Delft University of Technology. Accessed April 10, 2021. http://resolver.tudelft.nl/uuid:bfb6a4c7-1c60-472c-858e-bc519fc46521.

MLA Handbook (7^th Edition):

Kapoor, P (author). “Influence of Engineered Roughness on the Flow Instabilities in a Centrifugal Compressor.” 2014. Web. 10 Apr 2021.

Vancouver:

Kapoor P(. Influence of Engineered Roughness on the Flow Instabilities in a Centrifugal Compressor. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Apr 10]. Available from: http://resolver.tudelft.nl/uuid:bfb6a4c7-1c60-472c-858e-bc519fc46521.

Council of Science Editors:

Kapoor P(. Influence of Engineered Roughness on the Flow Instabilities in a Centrifugal Compressor. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:bfb6a4c7-1c60-472c-858e-bc519fc46521

The Ohio State University

15. Puskar, Robert J. The opposition effect in optical scattering from rough surfaces.

Degree: PhD, Graduate School, 1983, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1487238163205472

Subjects/Keywords: Physics; Surface roughness

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APA (6^th Edition):

Puskar, R. J. (1983). The opposition effect in optical scattering from rough surfaces. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1487238163205472

Chicago Manual of Style (16^th Edition):

Puskar, Robert J. “The opposition effect in optical scattering from rough surfaces.” 1983. Doctoral Dissertation, The Ohio State University. Accessed April 10, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487238163205472.

MLA Handbook (7^th Edition):

Puskar, Robert J. “The opposition effect in optical scattering from rough surfaces.” 1983. Web. 10 Apr 2021.

Vancouver:

Puskar RJ. The opposition effect in optical scattering from rough surfaces. [Internet] [Doctoral dissertation]. The Ohio State University; 1983. [cited 2021 Apr 10]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1487238163205472.

Council of Science Editors:

Puskar RJ. The opposition effect in optical scattering from rough surfaces. [Doctoral Dissertation]. The Ohio State University; 1983. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1487238163205472

Texas A&M University

16. Jain, Srishti. Electrochemical Polishing of Selective Laser Melted Inconel 718.

Degree: MS, Mechanical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/174473

► Additive manufacturing (AM) has gained prominence in the field of manufacturing and is becoming a strong competition to conventional manufacturing technologies such as casting, forming… (more)

Subjects/Keywords: ECP; Inconel 718; surface roughness; SLM

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APA (6^th Edition):

Jain, S. (2018). Electrochemical Polishing of Selective Laser Melted Inconel 718. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/174473

Chicago Manual of Style (16^th Edition):

Jain, Srishti. “Electrochemical Polishing of Selective Laser Melted Inconel 718.” 2018. Masters Thesis, Texas A&M University. Accessed April 10, 2021. http://hdl.handle.net/1969.1/174473.

MLA Handbook (7^th Edition):

Jain, Srishti. “Electrochemical Polishing of Selective Laser Melted Inconel 718.” 2018. Web. 10 Apr 2021.

Vancouver:

Jain S. Electrochemical Polishing of Selective Laser Melted Inconel 718. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1969.1/174473.

Council of Science Editors:

Jain S. Electrochemical Polishing of Selective Laser Melted Inconel 718. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/174473

Indian Institute of Science

17. Pendyala, Prashant. Generation, Characterization and Control of Nanoscale Surface Roughness.

Degree: PhD, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3011

► Surface roughness exists at many length scales-from atomic dimensions to meters. At sub-micron scale, the distribution of roughness is largely dependent on the process that… (more)

Subjects/Keywords: Nanoscale Surface Roughness; Electropolishing; Chemical Etching; Anodization; Aluminium Surfaces; Surface Generation; Surface Mechanical Behavior; Surface Indentation; Surface Roughness; Aluminum Surfaces; Surface Roughness Model; Nanotechnology

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APA (6^th Edition):

Pendyala, P. (2018). Generation, Characterization and Control of Nanoscale Surface Roughness. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3011

Chicago Manual of Style (16^th Edition):

Pendyala, Prashant. “Generation, Characterization and Control of Nanoscale Surface Roughness.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed April 10, 2021. http://etd.iisc.ac.in/handle/2005/3011.

MLA Handbook (7^th Edition):

Pendyala, Prashant. “Generation, Characterization and Control of Nanoscale Surface Roughness.” 2018. Web. 10 Apr 2021.

Vancouver:

Pendyala P. Generation, Characterization and Control of Nanoscale Surface Roughness. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Apr 10]. Available from: http://etd.iisc.ac.in/handle/2005/3011.

Council of Science Editors:

Pendyala P. Generation, Characterization and Control of Nanoscale Surface Roughness. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3011

University of North Texas

18. Vandadi, Aref. Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation.

Degree: 2014, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc500016/

► In the past decade, the condensation on superhydrophobic surfaces has been investigated abundantly to achieve dropwise condensation. There is not a specific approach in choosing… (more)

Subjects/Keywords: Optimization; surface roughness; dropwise condensation; hydrophobic surfaces; Hydrophobic surfaces.; Condensation.; Surface roughness.

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APA (6^th Edition):

Vandadi, A. (2014). Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc500016/

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):

Vandadi, Aref. “Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation.” 2014. Thesis, University of North Texas. Accessed April 10, 2021. https://digital.library.unt.edu/ark:/67531/metadc500016/.

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

MLA Handbook (7^th Edition):

Vandadi, Aref. “Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation.” 2014. Web. 10 Apr 2021.

Vancouver:

Vandadi A. Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation. [Internet] [Thesis]. University of North Texas; 2014. [cited 2021 Apr 10]. Available from: https://digital.library.unt.edu/ark:/67531/metadc500016/.

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

Council of Science Editors:

Vandadi A. Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation. [Thesis]. University of North Texas; 2014. Available from: https://digital.library.unt.edu/ark:/67531/metadc500016/

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

University of Utah

19. Shoemaker, Trevor Kealoha. Developing and applying a surface integrity framework to metal cutting on 2024-t351 aluminum with wiper cutting tools.

Degree: MS, Mechanical Engineering, 2015, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4015/rec/678

► Manufacture of a component typically involves a long sequence of manufacturing processes. At the end of that sequence is the finishing process, which defines the… (more)

▼ Manufacture of a component typically involves a long sequence of manufacturing processes. At the end of that sequence is the finishing process, which defines the surface state of a component. It is well known that the surface of a manufactured component has an effect on its structural integrity, hence the term surface integrity. This research systematically investigates surface integrity with a focus on the metal cutting process. Specifically, this research investigates the effects of the wiper tool nose radius on the surface integrity of the 2024-T351 aluminum alloy with facing and turning machining processes. The research is broken into two phases. Phase 1 involves a detailed investigation of the surface state through examination of metal chips, surface texture, residual stress, and machining forces. Phase 2 involves constant amplitude fatigue loading of surfaces equivalent to those from Phase 1. Phase 1 of the study showed that the wiper tools yielded a generally lower surface roughness than standard geometry cutting tools. However, the surface profiles yielded by the wiper tools showed additional plastic deformation that was not predicted by geometrical models for the surface profiles. This was attributed to a chip side flow phenomenon that was found to be unique to the chips yielded by the wiper tools. As part of the surface texture study, a normalized kurtosis parameter was developed to describe the deviation from theoretical, geometry-derived surface profiles. Residual stresses measured as part of Phase 1 showed a tensile residual stress profile for 2024-T351 aluminum for all studied cutting tool, cutting fluid, and machining conditions. However, the wiper tool generally yielded less tensile surface residual stresses than a standard cutting tool. It was also found that varying the cutting fluid conditions had no significant effect on the residual stress profile yielded by the cutting process. Phase 2 of this study was marred by undesirable fretting failures at the fatigue specimen grip interface, so relevant fatigue lifetimes of the surface states in Phase 1 were not captured. Potential solutions to this issue have been provided along with the details necessary to perform Phase 2 as part of a future study. In response to the lack of Phase 2 fatigue data, much of this thesis is devoted to providing detailed frameworks and guidance to aid in the future study of metal cutting and other finishing processes as they relate to surface integrity.

Subjects/Keywords: Aluminum; Machining; Residual Stress; Surface Integrity; Surface Roughness; Wiper

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APA (6^th Edition):

Shoemaker, T. K. (2015). Developing and applying a surface integrity framework to metal cutting on 2024-t351 aluminum with wiper cutting tools. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4015/rec/678

Chicago Manual of Style (16^th Edition):

Shoemaker, Trevor Kealoha. “Developing and applying a surface integrity framework to metal cutting on 2024-t351 aluminum with wiper cutting tools.” 2015. Masters Thesis, University of Utah. Accessed April 10, 2021. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4015/rec/678.

MLA Handbook (7^th Edition):

Shoemaker, Trevor Kealoha. “Developing and applying a surface integrity framework to metal cutting on 2024-t351 aluminum with wiper cutting tools.” 2015. Web. 10 Apr 2021.

Vancouver:

Shoemaker TK. Developing and applying a surface integrity framework to metal cutting on 2024-t351 aluminum with wiper cutting tools. [Internet] [Masters thesis]. University of Utah; 2015. [cited 2021 Apr 10]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4015/rec/678.

Council of Science Editors:

Shoemaker TK. Developing and applying a surface integrity framework to metal cutting on 2024-t351 aluminum with wiper cutting tools. [Masters Thesis]. University of Utah; 2015. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4015/rec/678

North-West University

20. Lombard, Zelldra. A composite manufacturing process for producing class A finished components / Zelldra Lombard .

Degree: 2014, North-West University

URL: http://hdl.handle.net/10394/12245

► The purpose of this study was to develop a composite manufacturing process that would be able to deliver Class A surface finished products in the… (more)

▼ The purpose of this study was to develop a composite manufacturing process that would be able to deliver Class A surface finished products in the context of mould manufacturing methods. The problem required solving was to overcome the time needed to prepare Class A surfaces, by developing a composite manufacturing process that will deliver Class A surface finished products straight from the mould. The process was aimed at the entire development process, from mould and plug design up to the finished product. A literature study and a factory mould survey were conducted with a view to obtain the necessary insights into surface finishing and composite manufacturing. These surveys were followed by seven constructional tests which determined the most appropriate solutions for the proposed manufacturing processes. Test 1 was used to determine a quality finish standard for composites from the sanding grits used to finished composite surfaces versus surface roughness values used in other industries. The standard determined that a P800 finish has a roughness between 0.200 and 0.150 um and constitutes a Class A3 finish. P1000 to P1200 have a roughness between 0.150 um to 0.100 um and constitutes a Class A2 finish. Finally a P2000 and higher have a roughness of 0.100 um and lower and constitutes Class A1 surface finish. After the standard was set, the tests for finishing of the moulds, plugs and parts commenced. Test 2 was conducted on the CNC manufacturing of plugs out of Nuceron651 tooling board. Tool path parameters were varied in a matrix. The samples with the best surface finish value were cut with a step-over of 0.5 and feed of 800 mm/min. These parameters were found to be the most influential. Test 2 and 4 revealed that the plug surface finishing should commence with conventional 2K paint finishing, with a possibility of acrylic split surface. This process produced projected mould surfaces between 0.150 um and 0.200 um, which can be categorised as Class A-3. Test 5 and 6 determined methods for improving the mould surface quality and durability. It was established that the tooling gelcoat should be applied whilst being heated and backed with at least two layers of glass veil and a steady increase of GSM of structural glass fibres to prevent print-through. Test 3 determined that the mould corners could be strengthened with rovings pressed into the corner. It was also established that the moulds surfaces will require finishing after demoulding. The final moulds were manufactured from a fibreglass composite structure with tooling gelcoat surface. A number of guidelines and a set process were developed in order to produce moulds with a surface finish of average 0.9 um, equivalent to Class A1. Release agents were tested in Test 7, and the Loctite Frekote 770-NC release system was deemed appropriate for use with In Mould Coating (IMC) of 2K Paint. These elements were all synthesised into plug, mould and part manufacturing processes. The proposed processes were validated by the manufacturing of a JS instrument panel, which…

Subjects/Keywords: Class A surface finish; Composite; Mould; Plug; Surface Roughness; Wet layup

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APA (6^th Edition):

Lombard, Z. (2014). A composite manufacturing process for producing class A finished components / Zelldra Lombard . (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/12245

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):

Lombard, Zelldra. “A composite manufacturing process for producing class A finished components / Zelldra Lombard .” 2014. Thesis, North-West University. Accessed April 10, 2021. http://hdl.handle.net/10394/12245.

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

MLA Handbook (7^th Edition):

Lombard, Zelldra. “A composite manufacturing process for producing class A finished components / Zelldra Lombard .” 2014. Web. 10 Apr 2021.

Vancouver:

Lombard Z. A composite manufacturing process for producing class A finished components / Zelldra Lombard . [Internet] [Thesis]. North-West University; 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10394/12245.

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

Council of Science Editors:

Lombard Z. A composite manufacturing process for producing class A finished components / Zelldra Lombard . [Thesis]. North-West University; 2014. Available from: http://hdl.handle.net/10394/12245

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

Oklahoma State University

21. Thoroppady Kittu, Anjana. Surface Energy Characteristics of Granite and Limestone Aggregates with Respect to 2d and 3d Surface Roughness Measurements.

Degree: Civil & Environmental Engineering, 2013, Oklahoma State University

URL: http://hdl.handle.net/11244/15147

► Surface energy properties of aggregates and asphalt binders can be used to select appropriate aggregate and asphalt binder combinations for the construction of moisture durable… (more)

▼ Surface energy properties of aggregates and asphalt binders can be used to select appropriate aggregate and asphalt binder combinations for the construction of moisture durable pavements. Sessile drop device is an effective method to determine the surface properties of aggregates and asphalt binders by performing direct contact angle measurements. However, the variations in surface roughness could impact the contact angle formed on the aggregate surface. Therefore, the present study was intended to evaluate the contact angle measurements on aggregate surfaces at different levels of surface roughness using the sessile drop device. Large size granite and limestone rock specimens were obtained and cut into appropriate sizes to create flat surfaces for contact angle measurements. The samples were subjected to a series of polishing stages using different particle sizes of silicon carbide and aluminum oxide grits. Contact angle measurements were subsequently conducted using three probe liquids on the unpolished surface as well as on the specimens subjected to different levels of polishing. Surface roughness measurements were also performed after each polishing stage using a two-dimensional profilometer and a three dimensional optical profilometer. The surface roughness decreased as the polishing progressed. The results from this study showed that as the surface became smoother, the values of contact angles formed by the probe liquids decreased, and attained consistent values after polishing with silicon carbide 1000 grit. The surface energy components also showed consistent results from the silicon carbide 1000 polishing stage onwards. Present results imply that initial polishing of aggregate surface is required to obtain consistent results from the sessile drop device. Correlation between two methods of measurements of surface roughness indicates that both methods could be useful for measurement of rock samples. Once the surface roughness is standardized to obtain representative contact angle, the sessile drop device can be used to compare different aggregates and select appropriate aggregate-asphalt binder combination for the construction of durable pavements. The surface energy results obtained from the contact angle measurements were used to evaluate the energy ratio and the compatibility ratio parameters for moisture damage potential of the two aggregate-binder combinations along with PG 64-22 neat binder. The results obtained indicate that ER and CR could be used as power tools for material selection. Advisors/Committee Members: Bulut, Rifat (advisor), Harimkar, Sandip S. (committee member), Tyagi, Avdesh (committee member).

Subjects/Keywords: aggregates; granite; limestone; sessile drop device; surface energy; surface roughness

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APA (6^th Edition):

Thoroppady Kittu, A. (2013). Surface Energy Characteristics of Granite and Limestone Aggregates with Respect to 2d and 3d Surface Roughness Measurements. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/15147

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):

Thoroppady Kittu, Anjana. “Surface Energy Characteristics of Granite and Limestone Aggregates with Respect to 2d and 3d Surface Roughness Measurements.” 2013. Thesis, Oklahoma State University. Accessed April 10, 2021. http://hdl.handle.net/11244/15147.

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

MLA Handbook (7^th Edition):

Thoroppady Kittu, Anjana. “Surface Energy Characteristics of Granite and Limestone Aggregates with Respect to 2d and 3d Surface Roughness Measurements.” 2013. Web. 10 Apr 2021.

Vancouver:

Thoroppady Kittu A. Surface Energy Characteristics of Granite and Limestone Aggregates with Respect to 2d and 3d Surface Roughness Measurements. [Internet] [Thesis]. Oklahoma State University; 2013. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/11244/15147.

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

Council of Science Editors:

Thoroppady Kittu A. Surface Energy Characteristics of Granite and Limestone Aggregates with Respect to 2d and 3d Surface Roughness Measurements. [Thesis]. Oklahoma State University; 2013. Available from: http://hdl.handle.net/11244/15147

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

Rochester Institute of Technology

22. Brackbill, Tim. Experimental investigation on the effects of surface roughness on microscale liquid flow.

Degree: Mechanical Engineering, 2008, Rochester Institute of Technology

URL: https://scholarworks.rit.edu/theses/7221

► Microfluidics has become of interest recently with shrinking device sizes. Roughness structures left from machining processes on the inside of tubes and channels that were… (more)

▼ Microfluidics has become of interest recently with shrinking device sizes. Roughness structures left from machining processes on the inside of tubes and channels that were once not a concern may now create relative roughness that exceeds 5%. Confusion still exists in the literature as to the extent of the effects of roughness on laminar flow. This work aims to experimentally examine the effects of different roughness structures on internal flows in high aspect ratio rectangular microchannels. A total of four test sections were fabricated to test samples with different patterned rough surfaces, and to also vary the two opposite surfaces forming the long faces of the channel. These test sections allowed the same roughness samples to be tested at varying relative roughnesses and allowed a systematic study on their effects on pressure drop. The first test section looked at sawtooth effects on laminar flow. The second looked at uniform roughness on laminar flow. The third looked at sawtooth roughness in turbulent flow, and the fourth looked at varying pitch sawtooth roughness in laminar flow. Rough surfaces were formed in one of two ways. The first involved making structured repeating sawtooth ridges with a ball end mill on a CNC machine. The second was using sandpaper in a crosshatch pattern to make a more unpatterned roughened surface. In this study, the Reynolds number was varied from 30 to 15,000 with degassed, deionized water as the working fluid. The experimental uncertainty in the experimental data is at worst 7.58% for friction factor and 2.67% for Reynolds number. Roughness structures varied from a lapped smooth surface with 0.2 μm roughness height to sawtooth ridges of height 117 μm. Hydraulic diameters from 198 μm to 2,349 μm were tested. The highest relative roughness tested was 24.8%. As a result of the first and second experiments, it was shown that using constricted parameters, sawtooth and uniform roughness performance could be predicted in the laminar regime. In the third experiment, it was shown that certain sawtooth roughness samples cause the results to converge to a single line for friction factor. In the fourth experiment, the pitch of sawtooth elements was shown to be a key parameter in showing when each parameter is applicable. It was found that roughness has an effect even at relative roughness values less than 5%. Lapped smooth samples showed no departure from macroscale theory at all channel diameters tested, which implies that no departure from continuum mechanics occurred at the length scales tested. This fit with what was expected. Early transitions to turbulence were seen however, showing decreasing transition Reynolds number with increasing relative roughness. The lowest turbulent transition occurred at a Reynolds number of 210, with a relative roughness of 24.8%. Most all of the roughness structures studied were found to have experimental results that were well predicted with the use of constricted parameters. However, samples with roughness elements placed at higher pitches were seen to… Advisors/Committee Members: Weinstein, Steven.

Subjects/Keywords: Internal flow; Microchannels; Roughness; Surface roughness

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APA (6^th Edition):

Brackbill, T. (2008). Experimental investigation on the effects of surface roughness on microscale liquid flow. (Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/7221

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):

Brackbill, Tim. “Experimental investigation on the effects of surface roughness on microscale liquid flow.” 2008. Thesis, Rochester Institute of Technology. Accessed April 10, 2021. https://scholarworks.rit.edu/theses/7221.

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

MLA Handbook (7^th Edition):

Brackbill, Tim. “Experimental investigation on the effects of surface roughness on microscale liquid flow.” 2008. Web. 10 Apr 2021.

Vancouver:

Brackbill T. Experimental investigation on the effects of surface roughness on microscale liquid flow. [Internet] [Thesis]. Rochester Institute of Technology; 2008. [cited 2021 Apr 10]. Available from: https://scholarworks.rit.edu/theses/7221.

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

Council of Science Editors:

Brackbill T. Experimental investigation on the effects of surface roughness on microscale liquid flow. [Thesis]. Rochester Institute of Technology; 2008. Available from: https://scholarworks.rit.edu/theses/7221

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

University of Rochester

23. Salzman, Sivan (1982 - ); Lambropoulos, John C. Optimal magnetorheological fluid for finishing of chemical-vapor-deposited zinc sulfide.

Degree: PhD, 2016, University of Rochester

URL: http://hdl.handle.net/1802/31455

► Magnetorheological finishing (MRF) of polycrystalline, chemical-vapor-deposited zinc sulfide (ZnS) optics leaves visible surface artifacts known as “pebbles”. These artifacts are a direct result of the… (more)

Subjects/Keywords: Magnetorheological finishing; Mechanical and chemical testing; Surface artifacts; Surface finish; Surface roughness; Zinc sulfide

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APA (6^th Edition):

Salzman, Sivan (1982 - ); Lambropoulos, J. C. (2016). Optimal magnetorheological fluid for finishing of chemical-vapor-deposited zinc sulfide. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/31455

Chicago Manual of Style (16^th Edition):

Salzman, Sivan (1982 - ); Lambropoulos, John C. “Optimal magnetorheological fluid for finishing of chemical-vapor-deposited zinc sulfide.” 2016. Doctoral Dissertation, University of Rochester. Accessed April 10, 2021. http://hdl.handle.net/1802/31455.

MLA Handbook (7^th Edition):

Salzman, Sivan (1982 - ); Lambropoulos, John C. “Optimal magnetorheological fluid for finishing of chemical-vapor-deposited zinc sulfide.” 2016. Web. 10 Apr 2021.

Vancouver:

Salzman, Sivan (1982 - ); Lambropoulos JC. Optimal magnetorheological fluid for finishing of chemical-vapor-deposited zinc sulfide. [Internet] [Doctoral dissertation]. University of Rochester; 2016. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1802/31455.

Council of Science Editors:

Salzman, Sivan (1982 - ); Lambropoulos JC. Optimal magnetorheological fluid for finishing of chemical-vapor-deposited zinc sulfide. [Doctoral Dissertation]. University of Rochester; 2016. Available from: http://hdl.handle.net/1802/31455

University of Houston

24. Mohammadi, Parnia. NANOSTRUCTURED SURFACES AND EMERGENT PHYSICAL BEHAVIOR.

Degree: PhD, Mechanical Engineering, 2012, University of Houston

URL: http://hdl.handle.net/10657/736

► Due to larger surface to volume ratio, surfaces play a significant role at the nanoscale. Surface atoms have different coordination numbers, charge distribution and subsequently… (more)

▼ Due to larger surface to volume ratio, surfaces play a significant role at the nanoscale. Surface atoms have different coordination numbers, charge distribution and subsequently different physical, mechanical and chemical properties. These differences are interpreted phenomenologically by postulating the existence of surface energy and acknowledging that the various bulk properties such as elastic modulus, melting temperature, and electromagnetic properties are different for surfaces. In this dissertation, we consider two types of surfaces: those bounding a three-dimensional entity, and independent two-dimensional deformable surfaces that can be used to represent, for example, graphene sheets, thin films, and lipid bilayers among others. In this dissertation: (i) We develop a theoretical framework, complemented by atomistic calculations, that elucidates the effect of roughness on surface energy, stress and surface elasticity. We find that the residual surface stress is hardly affected by roughness while the superficial elastic properties are dramatically altered and, importantly, may also result in a change in its sign; this has significant ramifications in the interpretation of sensing based on frequency measurement changes. In particular, we also comment on the effect of roughness on the generally ignored term that represents the curvature dependence of surface energy, crystalline Tolman’s length. (ii) In the context of independent deformable surfaces, our focus is on electromechanical coupling; in particular, the rapidly emerging topic of flexoelectricity. Recent developments in flexoelectricity, especially in nanostructures, have lead to several interesting notions such as creating piezoelectric substances without using piezoelectric materials, enhanced energy harvesting at the nanoscale among others. In the biological context also, membrane flexoelectricity has been hypothesized to play an important role, e.g., biological mechano-transduction, hearing mechanisms. In this dissertation, we consider a heterogenous flexoelectric membrane, and derive the homogenized flexoelectric, dielectric and elastic response. In particular for purely fluid or lipid type membranes, we obtain exact results—one of very few in homogenization theory. Using quantum mechanical calculations, we also show that graphene can be designed to be pyroelectric, thus providing an avenue to create the thinnest possible thermo-electro-mechanical material. Advisors/Committee Members: Sharma, Pradeep (advisor), Wheeler, Lewis T. (committee member), Brankovic, Stanko R. (committee member), Kulkarni, Yashashree (committee member), Agrawal, Ashutosh (committee member), Liu, Liping (committee member).

Subjects/Keywords: Surface roughness; Surface Energy; Nanoscale; Surface elasticity; Flexoelectricity; Pyroelectricity; Flexoelectric membrane; Nanostructures; Mechanical engineering

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APA (6^th Edition):

Mohammadi, P. (2012). NANOSTRUCTURED SURFACES AND EMERGENT PHYSICAL BEHAVIOR. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/736

Chicago Manual of Style (16^th Edition):

Mohammadi, Parnia. “NANOSTRUCTURED SURFACES AND EMERGENT PHYSICAL BEHAVIOR.” 2012. Doctoral Dissertation, University of Houston. Accessed April 10, 2021. http://hdl.handle.net/10657/736.

MLA Handbook (7^th Edition):

Mohammadi, Parnia. “NANOSTRUCTURED SURFACES AND EMERGENT PHYSICAL BEHAVIOR.” 2012. Web. 10 Apr 2021.

Vancouver:

Mohammadi P. NANOSTRUCTURED SURFACES AND EMERGENT PHYSICAL BEHAVIOR. [Internet] [Doctoral dissertation]. University of Houston; 2012. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10657/736.

Council of Science Editors:

Mohammadi P. NANOSTRUCTURED SURFACES AND EMERGENT PHYSICAL BEHAVIOR. [Doctoral Dissertation]. University of Houston; 2012. Available from: http://hdl.handle.net/10657/736

KTH

25. Hu, Chen. Surface Optimization of the Silicon Templates for Monolithic Photonics Integration.

Degree: Information and Communication Technology (ICT), 2011, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37226

► Silicon photonics is emerging as a potential field to achieve optical interconnects towards the realization of ultra high bandwidth. The indirect band-gap property of… (more)

▼ Silicon photonics is emerging as a potential field to achieve optical interconnects towards the realization of ultra high bandwidth. The indirect band-gap property of silicon still remains as a big challenge to incorporate silicon photonic active device, for example, silicon-based laser. In the Laboratory of Semiconductor Materials at KTH, a monolithic integration platform based on nano-epitaxial lateral overgrowth (nano-ELOG) technique has been proposed to integrate III-V semiconductor materials with silicon for light source application. The integration process involves uneven surface morphology at different stages. The surfaces of the indium phosphide seed layer on silicon used for ELOG, the mask deposited on it (the silicon/silicon dioxide waveguide) and the ELOG indium phosphide layer grown on it prior to laser growth are often rough. In this thesis work, we have optimized chemical mechanical polishing (CMP) technique in order to achieve an even surface. The same procedure is also necessary to reach the optimal thickness of different layers to enable effective coupling of light from the laser source into the waveguide. CMP of indium phosphide to obtain an average surface roughness of < 1 nm has been optimized by a two-step polishing using different slurries; it results in a step height of ca 3 nm. Similarly the surface of silicon/silicon dioxide “waveguide” has also been optimized with the roughness of ~ 0.5 nm. In the latter case, a step height of 40 nm is retained and this increase with respect to InP is identified to be mainly due to limitations of the polishing machine which is different from that used for indium phosphide. The reduction in step heights with polishing time is analyzed and compared with an existing theoretical model. Our results are in good qualitative agreement with the model. The optimized surface morphology obtained in this work was tested for its suitability for integration. For this evaluation, InP was grown by ELOG in a hydride vapour phase epitaxy reactor with and without CMP of the involved surfaces. The surface after CMP yields layers of better surface morphology with fewer defects as revealed by atomic force microscopy, surface profilometer and cathodoluminescence analysis. The results indicate that the CMP process is useful for monolithic integration for silicon photonics.

Subjects/Keywords: Chemical mechanical polishing; epitaxial lateral growth; surface optimization; roughness; surface morphology; step height; surface topography.

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APA (6^th Edition):

Hu, C. (2011). Surface Optimization of the Silicon Templates for Monolithic Photonics Integration. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37226

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):

Hu, Chen. “Surface Optimization of the Silicon Templates for Monolithic Photonics Integration.” 2011. Thesis, KTH. Accessed April 10, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37226.

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

MLA Handbook (7^th Edition):

Hu, Chen. “Surface Optimization of the Silicon Templates for Monolithic Photonics Integration.” 2011. Web. 10 Apr 2021.

Vancouver:

Hu C. Surface Optimization of the Silicon Templates for Monolithic Photonics Integration. [Internet] [Thesis]. KTH; 2011. [cited 2021 Apr 10]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37226.

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

Council of Science Editors:

Hu C. Surface Optimization of the Silicon Templates for Monolithic Photonics Integration. [Thesis]. KTH; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37226

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

NSYSU

26. Chiu, Yi-hung. A preliminary study on anisotropic polishing behaviors of hydrodynamic polishing process.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2004, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715104-020517

► This study is to investigate that the polishing behavior will be independent of or dependent on the direction of particle motion by the anisotropic polishing… (more)

▼ This study is to investigate that the polishing behavior will be independent of or dependent on the direction of particle motion by the anisotropic polishing phenomenon of hydrodynamic polishing process under the semi-contact lubricating condition. There are two types of experiments to be examined to get to the objectives. First, taking polishing on the work surface which possesses the isotropic surface roughness, to discuss the variation of the smoothing efficiency of the surface irregularities in the five different directions on the work surface. Second, taking three kinds of polishing, âlongitudinal, transverse, and oblique roughness polishingâ, on the work surface which possesses the anisotropic surface roughness. Then to discuss the variation of the smoothing efficiency of the surface irregularities on the work surface. Both the results of two types experiments should be take to distinguish the difference between one smoothing efficiency and the others from using the hypothesis testing. All hypothesis tests about the experiment results of the work piece which possesses the isotropic surface roughness are accepting . But, most hypothesis tests about the experiment results of the work piece which possesses the anisotropic surface roughness are rejecting . The theory analysis about the smoothing efficiency is discussing. The discussion about the smoothing efficiency can explain the phenomenon due to taking polishing on the work surface which possesses the anisotropic surface roughness. The reason why the phenomenon happened is possible the effects of different lubrication condition. Last, from the lubrication theory, the effects of different lubrication condition due to different surface texture can be employed to verify the explanation about the phenomenon is suitable. The conclusion from the experiment results and the theory analysis is: the polishing behavior is possible independent of the direction of particle motion by the anisotropic polishing phenomenon of hydro- dynamic polishing process under the semi-contact lubricating condition. Advisors/Committee Members: none (chair), nono (chair), none (chair), Su, Yaw-Terng (committee member).

Subjects/Keywords: anisotropic polishing; isotropic surface roughness; anisotropic surface roughness

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APA (6^th Edition):

Chiu, Y. (2004). A preliminary study on anisotropic polishing behaviors of hydrodynamic polishing process. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715104-020517

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):

Chiu, Yi-hung. “A preliminary study on anisotropic polishing behaviors of hydrodynamic polishing process.” 2004. Thesis, NSYSU. Accessed April 10, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715104-020517.

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

MLA Handbook (7^th Edition):

Chiu, Yi-hung. “A preliminary study on anisotropic polishing behaviors of hydrodynamic polishing process.” 2004. Web. 10 Apr 2021.

Vancouver:

Chiu Y. A preliminary study on anisotropic polishing behaviors of hydrodynamic polishing process. [Internet] [Thesis]. NSYSU; 2004. [cited 2021 Apr 10]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715104-020517.

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

Council of Science Editors:

Chiu Y. A preliminary study on anisotropic polishing behaviors of hydrodynamic polishing process. [Thesis]. NSYSU; 2004. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715104-020517

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

University of New Mexico

27. Venkatakrishnan, Abishek. Flow in thin regions bounded by structured and porous surfaces : applications to load bearings.

Degree: Chemical and Biological Engineering, 2013, University of New Mexico

URL: http://hdl.handle.net/1928/22022

► The effect of surface roughness on the load capacity and friction force of hydrodynamic bearings has received considerable interest from scientists and engineers. Surfaces of… (more)

Subjects/Keywords: Hydrodynamic bearings; Load Capacity; Surface roughness; Lubrication theory; Frictional resistance (Hydrodynamics); Surface roughness.; Bearings (Machinery) – Testing.

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

APA (6^th Edition):

Venkatakrishnan, A. (2013). Flow in thin regions bounded by structured and porous surfaces : applications to load bearings. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/22022

Chicago Manual of Style (16^th Edition):

Venkatakrishnan, Abishek. “Flow in thin regions bounded by structured and porous surfaces : applications to load bearings.” 2013. Masters Thesis, University of New Mexico. Accessed April 10, 2021. http://hdl.handle.net/1928/22022.

MLA Handbook (7^th Edition):

Venkatakrishnan, Abishek. “Flow in thin regions bounded by structured and porous surfaces : applications to load bearings.” 2013. Web. 10 Apr 2021.

Vancouver:

Venkatakrishnan A. Flow in thin regions bounded by structured and porous surfaces : applications to load bearings. [Internet] [Masters thesis]. University of New Mexico; 2013. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1928/22022.

Council of Science Editors:

Venkatakrishnan A. Flow in thin regions bounded by structured and porous surfaces : applications to load bearings. [Masters Thesis]. University of New Mexico; 2013. Available from: http://hdl.handle.net/1928/22022

Brno University of Technology

28. Černý, Libor. Faktory ovlivňující kvalitu obrobené plochy po frézování: Factors affecting the quality of machined surfaces after milling operation.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/82796

► This diploma thesis deals with the final quality of the surface under variable working conditions during milling. The first part deals with the definition of… (more)

Subjects/Keywords: měření drsnosti; řezné síly; jakost povrchu; frézování; drsnost; analýza povrchu; roughness measurement; cutting force; surface quality; milling; roughness; surface analysis

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APA (6^th Edition):

Černý, L. (2019). Faktory ovlivňující kvalitu obrobené plochy po frézování: Factors affecting the quality of machined surfaces after milling operation. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/82796

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):

Černý, Libor. “Faktory ovlivňující kvalitu obrobené plochy po frézování: Factors affecting the quality of machined surfaces after milling operation.” 2019. Thesis, Brno University of Technology. Accessed April 10, 2021. http://hdl.handle.net/11012/82796.

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

MLA Handbook (7^th Edition):

Černý, Libor. “Faktory ovlivňující kvalitu obrobené plochy po frézování: Factors affecting the quality of machined surfaces after milling operation.” 2019. Web. 10 Apr 2021.

Vancouver:

Černý L. Faktory ovlivňující kvalitu obrobené plochy po frézování: Factors affecting the quality of machined surfaces after milling operation. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/11012/82796.

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

Council of Science Editors:

Černý L. Faktory ovlivňující kvalitu obrobené plochy po frézování: Factors affecting the quality of machined surfaces after milling operation. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/82796

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

Université Montpellier II

29. Négrel, Jean. Estimation du débit des fleuves à partir de mesures satellitaires des variables de surface sans mesures in situ : Estimating river discharge from earth observation measurement of river surface hydraulic variables.

Degree: Docteur es, SYAM - Systèmes Automatiques et Microélectroniques, 2011, Université Montpellier II

URL: http://www.theses.fr/2011MON20239

►

La question de l'eau constitue à l'heure actuelle un enjeu majeur pour nos sociétés. Bien qu'il s'agisse d'une ressource renouvelable, son cycle naturel est soumis… (more)

▼

La question de l'eau constitue à l'heure actuelle un enjeu majeur pour nos sociétés. Bien qu'il s'agisse d'une ressource renouvelable, son cycle naturel est soumis à de fortes pressions issues tant de l'activité humaine que des modifications climatiques.Le débit des fleuves constitue une des variables clefs du cycle de l'eau. Sa quantification implique des mesures in situ lourdes. De ce fait, son suivi à l'échelle globale reste problématique, et les techniques de télédétection peuvent représenter un atout majeur. Les techniques satellitaires optiques et radar ne peuvent actuellement que mesurer les variables de surface et n'accèdent pas aux paramètres de fond des cours d'eau. Ce travail propose une méthode d'estimation de ces paramètres hydrauliques de fond à partir des seules mesures des variables de surface, en vue de l'estimation du débit. Cette méthode a été validée sur des données simulées exactes et une étude de sensibilité au bruit de mesure a été menée sur des données simulées bruitées et sur des données réelles.Le second volet de ce travail porte sur le potentiel de l'interférométrie radar temporelle à mesurer la variable de vitesse de surface des fleuves. Une campagne de mesure aéroportée a été réalisée sur le Rhône (ONERA-Cemagref) et a montré des résultats concordants avec les mesures de vitesses réalisées in situ par ADCP. En revanche, le modèle de rétrodiffusion M4S, testé dans le cadre de cette thèse, est apparu peu adapté aux scènes fluviales : il s'avère extrêmement sensible aux conditions de vent, ce qui peut s'expliquer par une faiblesse dans la modélisation des caractéristiques des surfaces de fleuves. Dans le cadre du programme SWOT (NASA-CNES), nous avons développé une méthode de mesure in situ de la rugosité des surfaces fluviales. Validée lors de mesures en laboratoire, cette méthode a été mise en œuvre sur le Rhône, et a ainsi permis de caractériser la surface et l'influence de l'intensité du vent sur les paramètres de rugosité.

The water issue is currently a major challenge for our societies. Even if water is a renewable resource, its natural cycle supports great stresses, both human activity and climate change.River discharge is a key variable of the water cycle, whose quantification requires heavy field measurements. Therefore the global monitoring of river discharge remains problematic and satellite remote sensing techniques could be a major asset. Earth Observation radar techniques are currently limited to the measurement of surface variables and cannot measure river bottom hydraulic parameters. The current study proposes a method to estimate these parameters from surface variables, in order to estimate the river discharge. This method has been validated on exact simulated data and its robustness to measurement noise has been studied on noisy simulated data and on real data.The second part of this work explores the abilities of radar along-track interferometry to measure river surface velocity. Velocity measurements carried out on the Rhône river during an airborne campaign…

Advisors/Committee Members: Strauss, Olivier (thesis director), Kosuth, Pascal (thesis director).

Subjects/Keywords: Hydrologie; Radar; Interférométrie; Ati; Vitesses de surface; Rugosité de surface; Hydrology; Radar; Interferometry; Ati; Surface velocity; Surface roughness

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

APA (6^th Edition):

Négrel, J. (2011). Estimation du débit des fleuves à partir de mesures satellitaires des variables de surface sans mesures in situ : Estimating river discharge from earth observation measurement of river surface hydraulic variables. (Doctoral Dissertation). Université Montpellier II. Retrieved from http://www.theses.fr/2011MON20239

Chicago Manual of Style (16^th Edition):

Négrel, Jean. “Estimation du débit des fleuves à partir de mesures satellitaires des variables de surface sans mesures in situ : Estimating river discharge from earth observation measurement of river surface hydraulic variables.” 2011. Doctoral Dissertation, Université Montpellier II. Accessed April 10, 2021. http://www.theses.fr/2011MON20239.

MLA Handbook (7^th Edition):

Négrel, Jean. “Estimation du débit des fleuves à partir de mesures satellitaires des variables de surface sans mesures in situ : Estimating river discharge from earth observation measurement of river surface hydraulic variables.” 2011. Web. 10 Apr 2021.

Vancouver:

Négrel J. Estimation du débit des fleuves à partir de mesures satellitaires des variables de surface sans mesures in situ : Estimating river discharge from earth observation measurement of river surface hydraulic variables. [Internet] [Doctoral dissertation]. Université Montpellier II; 2011. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2011MON20239.

Council of Science Editors:

Négrel J. Estimation du débit des fleuves à partir de mesures satellitaires des variables de surface sans mesures in situ : Estimating river discharge from earth observation measurement of river surface hydraulic variables. [Doctoral Dissertation]. Université Montpellier II; 2011. Available from: http://www.theses.fr/2011MON20239

NSYSU

30. Chen, Yung-Wei. A Preliminary Study on Ultimate Surface Roughness of Hydrodynamic Polishing Process.

Degree: Master, Mechanical Engineering, 2001, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0703101-092132

► The ultimate value of surface roughness and its characteristic for the polishing process was investigated in this thesis. To find out the nature of ultimate… (more)

Subjects/Keywords: roughness reduction; surface roughness; Hydrodynamic Polishing Process; ultimate surface roughness

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

APA (6^th Edition):

Chen, Y. (2001). A Preliminary Study on Ultimate Surface Roughness of Hydrodynamic Polishing Process. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0703101-092132

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):

Chen, Yung-Wei. “A Preliminary Study on Ultimate Surface Roughness of Hydrodynamic Polishing Process.” 2001. Thesis, NSYSU. Accessed April 10, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0703101-092132.

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

MLA Handbook (7^th Edition):

Chen, Yung-Wei. “A Preliminary Study on Ultimate Surface Roughness of Hydrodynamic Polishing Process.” 2001. Web. 10 Apr 2021.

Vancouver:

Chen Y. A Preliminary Study on Ultimate Surface Roughness of Hydrodynamic Polishing Process. [Internet] [Thesis]. NSYSU; 2001. [cited 2021 Apr 10]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0703101-092132.

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

Council of Science Editors:

Chen Y. A Preliminary Study on Ultimate Surface Roughness of Hydrodynamic Polishing Process. [Thesis]. NSYSU; 2001. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0703101-092132

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