subject:(Metallic composites Fatigue Testing)

Vanderbilt University

1. Prater, Tracie Joy. An Investigation into the Friction Stir Welding of Al 6061 and Al 6061/SiC/17.5p using Diamond Coatings.

Degree: MS, Mechanical Engineering, 2008, Vanderbilt University

URL: http://hdl.handle.net/1803/13732

► Friction Stir Welding (FSW) is a solid-state joining process developed by The Welding Institute (TWI) in 1991. The large axial forces associated with this process… (more)

Subjects/Keywords: Diamond thin films – Industrial applications; Metallic composites – Fatigue – Testing; diamond coatings; Friction stir welding; Metal Matrix Composites; Aluminum – Fatigue – Testing

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APA (6^th Edition):

Prater, T. J. (2008). An Investigation into the Friction Stir Welding of Al 6061 and Al 6061/SiC/17.5p using Diamond Coatings. (Thesis). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/13732

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):

Prater, Tracie Joy. “An Investigation into the Friction Stir Welding of Al 6061 and Al 6061/SiC/17.5p using Diamond Coatings.” 2008. Thesis, Vanderbilt University. Accessed January 21, 2021. http://hdl.handle.net/1803/13732.

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

MLA Handbook (7^th Edition):

Prater, Tracie Joy. “An Investigation into the Friction Stir Welding of Al 6061 and Al 6061/SiC/17.5p using Diamond Coatings.” 2008. Web. 21 Jan 2021.

Vancouver:

Prater TJ. An Investigation into the Friction Stir Welding of Al 6061 and Al 6061/SiC/17.5p using Diamond Coatings. [Internet] [Thesis]. Vanderbilt University; 2008. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/1803/13732.

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

Council of Science Editors:

Prater TJ. An Investigation into the Friction Stir Welding of Al 6061 and Al 6061/SiC/17.5p using Diamond Coatings. [Thesis]. Vanderbilt University; 2008. Available from: http://hdl.handle.net/1803/13732

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

Georgia Tech

2. Jen, Chi-Chin. Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo.

Degree: MS, Ceramic Engineering, 1972, Georgia Tech

URL: http://hdl.handle.net/1853/9493

Subjects/Keywords: Solidification; Metallic composites Testing

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APA (6^th Edition):

Jen, C. (1972). Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/9493

Chicago Manual of Style (16^th Edition):

Jen, Chi-Chin. “Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo.” 1972. Masters Thesis, Georgia Tech. Accessed January 21, 2021. http://hdl.handle.net/1853/9493.

MLA Handbook (7^th Edition):

Jen, Chi-Chin. “Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo.” 1972. Web. 21 Jan 2021.

Vancouver:

Jen C. Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo. [Internet] [Masters thesis]. Georgia Tech; 1972. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/1853/9493.

Council of Science Editors:

Jen C. Factors determining the unidirectional solidification behavior of the systems UO[subscript]2-Ta, UO[subscript]2-Nb, and UO[subscript]2-Mo. [Masters Thesis]. Georgia Tech; 1972. Available from: http://hdl.handle.net/1853/9493

Ryerson University

3. Sutton, Christopher E. Fatigue damage assessment of particle-reinforced metal matrix composite materials under uniaxial and multiaxial loading conditions.

Degree: 2009, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1355

► The proposed study [is] intended to investigate the fatigue damage of Particle Metal Matrix (PMM) composites under uniaxial and multiaxial loading conditions. Five damage models… (more)

▼ The proposed study [is] intended to investigate the fatigue damage of Particle Metal Matrix (PMM) composites under uniaxial and multiaxial loading conditions. Five damage models of Smith-Watson-Topper (S.W.T.), Ellyin, Brown-Miller, Fatemi-Socie and Varvani were tested for various PMM composite materials for their ability to correlate the uniaxial, torsional and combined tension-torsion damage-life data. Four PMM composite materials of A1 6061 / A1₂O₃ / 20p-T6, A1 6061 / A1₂O₃ / 22p-T6, A1 6061 / SiC / 17w-T6 and Ti-6A1-4V / TiC / 10p were evaluated for damage-life based on their strain-life fatigue data.The results of the fatigue damage correlation of uniaxial, rosional and combined tension-torsion fatigue damage versus life for the four PMM composites were investigated in this thesis. The critical plane approaches of Brown-Miller and Fatemi-Socie should almost have the same degree of success in damage assessment of composite materials. These strain based critical plane approaches scaled damage values versus fatigue life data as the lowerst range (0.001-0.01) over low-cycle and high-cycle fatigue regimes. While energy based models of S.W.T. and Ellyin holding both the stress and strain terms correlated damage data at the highest range (1-10) with a relatively larger scatter band for various fatigue lives as compared with other damage approaches. Varvani critical plane-energy approach incorporated the critical plane as the plane of crack initiation and damage growth as well as the strain energy density as a function of stress and strain components acting on the critical plane, which successfully evaluated fatigue damage values within a narrow band. Damage values based on this approach ranged between the highest (S.W.T. and Ellyin) and the lowest (Brown-Miller and Fatemi-Socie) ranges and presented an intermediate range of (0.05-0.1).Varvani damage model was further enhanced by means of material dependent terms of α and β to account for the magnitude of difference between Coffin-Manson coefficients for the metallic matrix and PMMC. Terms α and β enables to estimate fatigue damage of PMMCs if the strain-life curve for the base metal matrix is known. A finite element unit cell model was also developed to simulate stress-strain responses of A1 6061 / A1₂O₃ / 10p-T6 and A1 6061 / A1₂O₃ / 20p-T6 under monotonic tensile loading. The simulated numerical results of stress-strain showed good agreement with the experimental data and prove to be a good tool in the estimation of stress-strain behaviour of PMM composites with vaious volume fractions. Advisors/Committee Members: Varvani-Farahani, A. (Thesis advisor), Ryerson University (Degree grantor).

Subjects/Keywords: Metallic composites – Fatigue – Mathematical models; Composite materials – Fatigue; Composite materials – Fatigue – Mathematical models; Strains and stresses; Axial loads; Fracture – Mechanics

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APA (6^th Edition):

Sutton, C. E. (2009). Fatigue damage assessment of particle-reinforced metal matrix composite materials under uniaxial and multiaxial loading conditions. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1355

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):

Sutton, Christopher E. “Fatigue damage assessment of particle-reinforced metal matrix composite materials under uniaxial and multiaxial loading conditions.” 2009. Thesis, Ryerson University. Accessed January 21, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1355.

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

MLA Handbook (7^th Edition):

Sutton, Christopher E. “Fatigue damage assessment of particle-reinforced metal matrix composite materials under uniaxial and multiaxial loading conditions.” 2009. Web. 21 Jan 2021.

Vancouver:

Sutton CE. Fatigue damage assessment of particle-reinforced metal matrix composite materials under uniaxial and multiaxial loading conditions. [Internet] [Thesis]. Ryerson University; 2009. [cited 2021 Jan 21]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1355.

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

Council of Science Editors:

Sutton CE. Fatigue damage assessment of particle-reinforced metal matrix composite materials under uniaxial and multiaxial loading conditions. [Thesis]. Ryerson University; 2009. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1355

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

Michigan State University

4. Saoudi, Adel. Design of an experimental chamber for a new powder metallurgy technique to make continuous fiber metal-matrix composites.

Degree: MS, Department of Materials Science and Mechanics, 1993, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:24407

Subjects/Keywords: Metallic composites; Powder metallurgy; Metallic composites – Testing

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APA (6^th Edition):

Saoudi, A. (1993). Design of an experimental chamber for a new powder metallurgy technique to make continuous fiber metal-matrix composites. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:24407

Chicago Manual of Style (16^th Edition):

Saoudi, Adel. “Design of an experimental chamber for a new powder metallurgy technique to make continuous fiber metal-matrix composites.” 1993. Masters Thesis, Michigan State University. Accessed January 21, 2021. http://etd.lib.msu.edu/islandora/object/etd:24407.

MLA Handbook (7^th Edition):

Saoudi, Adel. “Design of an experimental chamber for a new powder metallurgy technique to make continuous fiber metal-matrix composites.” 1993. Web. 21 Jan 2021.

Vancouver:

Saoudi A. Design of an experimental chamber for a new powder metallurgy technique to make continuous fiber metal-matrix composites. [Internet] [Masters thesis]. Michigan State University; 1993. [cited 2021 Jan 21]. Available from: http://etd.lib.msu.edu/islandora/object/etd:24407.

Council of Science Editors:

Saoudi A. Design of an experimental chamber for a new powder metallurgy technique to make continuous fiber metal-matrix composites. [Masters Thesis]. Michigan State University; 1993. Available from: http://etd.lib.msu.edu/islandora/object/etd:24407

Michigan State University

5. Karpenko, Oleksii. Optical transmission scanning and hybrid acousto-optical techniques for NDE and SHM of structural composites.

Degree: 2018, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:19307

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Thesis Ph. D. Michigan State University. Electrical Engineering 2018

Fiber reinforced polymer (FRP) composites have been extensively used in aerospace, marine and defense industries due… (more)

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Thesis Ph. D. Michigan State University. Electrical Engineering 2018

Fiber reinforced polymer (FRP) composites have been extensively used in aerospace, marine and defense industries due to the many advantages they offer including light-weight, corrosion resistance and excellent thermo-mechanical properties. Increasing fuel-efficiency demands and reducing green-house emissions has also propelled the use of FRP composites in the automotive industry. However, despite excellent mechanical properties of FRPs, their anisotropy, brittle nature and the vulnerability to flaws during fabrication and service has propelled the need of nondestructive evaluation (NDE) and structural health monitoring (SHM) techniques. This dissertationpresents three major contributions to the fields of NDE and SHM of structural composites:• optical transmission scanning (OTS) for rapid, non-contact and quantitative NDE of glass and aramid FRPs;• optical frequency-domain reflectometry (OFDR) for distributed monitoring of strains in FRPs using single-mode (SM) optical fibers and Rayleigh back-scattering;• hybrid acousto-optic health monitoring of FRPs using guided waves (GW) and Fabry-Perot interferometric sensors based on chirped fiber Bragg-gratings (CFBG-FPI).Chapter I presents an OTS system for quantitative NDE of GFRP samples. The technique provides high-resolution, rapid, and non-contact optical transmittance scans. Experimental implementation of the technique and advanced data analysis protocol developed for impact damage evaluation are presented. Obtained experimental results show that other defects and certain microstructural variations in GFRP composites can be easily identified by OTS, because the technique is sensitive to localized changes of optical properties such as radiation absorption and scattering. The applications of OTS are extended to GFRP plates with improperly mixed resin, inclusions, and delaminations. Finally, the capabilities of the technique to evaluate the distribution of adhesive and detect fatigue damage in adhesively bonded GFRP joints are demonstrated.Chapter II describes the development of advanced signal processing algorithms for strain sensing in optical fibers using Rayleigh back-scattering and the OFDR technique. Distributed displacement and strain sensing along the fiber length is implemented using the OFDR-1000 system from General Photonics Corporation (Chino, CA). Performance of the system is validated by measuring strains introduced in the optical fiber by the piezoelectric fiber stretcher. Chapter III lays out the approach for diagnostic imaging of plate-like structures using hybrid acousto-optic technique. Guided waves are excited with surface-bonded piezoelectric wafers and are sensed with pairs of chirped fiber Bragg-gratings that form Fabry-Perot interferometers inside the surface-bonded optical fiber. Initial experimental results obtained on aluminum plates demonstrate that CFBG-FPIs are sensitive to both symmetric and antisymmetric fundamental GW modes. Structural damage is successfully located…

Advisors/Committee Members: Haq, Mahmoodul, Udpa, Lalita, Udpa, Satish, Aviyente, Selin.

Subjects/Keywords: Fibrous composites – Fracture; Fibrous composites – Fatigue; Fibrous composites – Nondestructive testing; Structural health monitoring; Nondestructive testing; Bragg gratings; Electrical engineering

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APA (6^th Edition):

Karpenko, O. (2018). Optical transmission scanning and hybrid acousto-optical techniques for NDE and SHM of structural composites. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:19307

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):

Karpenko, Oleksii. “Optical transmission scanning and hybrid acousto-optical techniques for NDE and SHM of structural composites.” 2018. Thesis, Michigan State University. Accessed January 21, 2021. http://etd.lib.msu.edu/islandora/object/etd:19307.

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

MLA Handbook (7^th Edition):

Karpenko, Oleksii. “Optical transmission scanning and hybrid acousto-optical techniques for NDE and SHM of structural composites.” 2018. Web. 21 Jan 2021.

Vancouver:

Karpenko O. Optical transmission scanning and hybrid acousto-optical techniques for NDE and SHM of structural composites. [Internet] [Thesis]. Michigan State University; 2018. [cited 2021 Jan 21]. Available from: http://etd.lib.msu.edu/islandora/object/etd:19307.

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

Council of Science Editors:

Karpenko O. Optical transmission scanning and hybrid acousto-optical techniques for NDE and SHM of structural composites. [Thesis]. Michigan State University; 2018. Available from: http://etd.lib.msu.edu/islandora/object/etd:19307

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

Oregon State University

6. Philo, Sarah L. Effect of ambient environment on the fracture and fatigue properties of Zr-based bulk metallic glasses.

Degree: MS, Materials Science, 2009, Oregon State University

URL: http://hdl.handle.net/1957/12923

► The effect of ambient environment on the fatigue behavior of two Zr-Ti-Cu-Ni-Be bulk metallic glasses (BMGs) is examined in the present study. The first metallic… (more)

▼ The effect of ambient environment on the fatigue behavior of two Zr-Ti-Cu-Ni-Be bulk metallic glasses (BMGs) is examined in the present study. The first metallic glass, Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅, was tested to establish the presence of an environmental effect in the fatigue growth curve measured in ambient air. Fatigue growth curves produced from Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ in ambient environment were shown to exhibit a plateau where the fatigue growth rate was independent of stress intensity range near 10⁻⁹ m/cycle, which are typically characteristic of aggressive environment, affecting crack growth. Experiments performed in inert atmosphere (dry N₂) demonstrated a higher threshold stress intensity (ΔK[subscript TH]), near-threshold crack growth rates decreased significantly, and no stress intensity independent plateau was measured. It was therefore confirmed that the fatigue behavior of Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ is significantly affected by aggressive ambient air environment. Both oxidation and hydrogen embrittlement processes are discussed as possible causes for the observed environmental effect. An initial study of the fatigue properties of the second metallic glass, Zr₅₈.₅Cu₁₅.₆Ni₁₂.₈Al₁₀.₃Nb₂.₈, was performed. A fatigue growth curve was produced in ambient atmosphere and a plateau in the fatigue growth curve near 2.5 x 10⁻⁸ m/cycle was measured. In the plateau produced by Zr₅₈.₅Cu₁₅.₆Ni₁₂.₈Al₁₀.₃Nb₂.₈ the growth rate was independent of stress intensity, like in the fatigue curve measured from Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ under similar conditions. It is speculated that Zr₅₈.₅Cu₁₅.₆Ni₁₂.₈Al₁₀.₃Nb₂.₈ is susceptible to an environmental species more diffusive in Zr₅₈.₅Cu₁₅.₆Ni₁₂.₈Al₁₀.₃Nb₂.₈ than that found to affect Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅, because the characteristic plateau occurs at a higher growth rate. The plane strain fracture toughness (K[subscript C]) was also measured for Zr₅₈.₅Cu₁₅.₆Ni₁₂.₈Al₁₀.₃Nb₂.₈ and found to equal ~26 MPa√m. However, crack branching was discovered to have occurred during each K[subscript C] measurement, making the accuracy of the measurements difficult to ascertain. Advisors/Committee Members: Kruzic, Jamie J. (advisor), Warnes, William (committee member).

Subjects/Keywords: Fatigue; Metallic glasses – Fatigue

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APA (6^th Edition):

Philo, S. L. (2009). Effect of ambient environment on the fracture and fatigue properties of Zr-based bulk metallic glasses. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/12923

Chicago Manual of Style (16^th Edition):

Philo, Sarah L. “Effect of ambient environment on the fracture and fatigue properties of Zr-based bulk metallic glasses.” 2009. Masters Thesis, Oregon State University. Accessed January 21, 2021. http://hdl.handle.net/1957/12923.

MLA Handbook (7^th Edition):

Philo, Sarah L. “Effect of ambient environment on the fracture and fatigue properties of Zr-based bulk metallic glasses.” 2009. Web. 21 Jan 2021.

Vancouver:

Philo SL. Effect of ambient environment on the fracture and fatigue properties of Zr-based bulk metallic glasses. [Internet] [Masters thesis]. Oregon State University; 2009. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/1957/12923.

Council of Science Editors:

Philo SL. Effect of ambient environment on the fracture and fatigue properties of Zr-based bulk metallic glasses. [Masters Thesis]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/12923

7. Goel, Ashutosh. Fatigue and environmental behavior of long fiber thermoplastic (LFT) composites.

Degree: PhD, 2008, University of Alabama – Birmingham

URL: http://contentdm.mhsl.uab.edu/u?/etd,230

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In the present work we have characterized the mechanical behavior of long fiber thermoplastic (LFT) composites (21% E-glass fiber/polypropylene) under different conditions. We start by… (more)

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In the present work we have characterized the mechanical behavior of long fiber thermoplastic (LFT) composites (21% E-glass fiber/polypropylene) under different conditions. We start by comparing the elastic modulus of LFT predicted by a microstructure-based approach called Object Oriented Finite (OOF) element method, and compare the result with prediction from various models commonly used in the literature and the experimental value. The predictions from the models used currently in the literature did not agree well with the experimental value due to the assumptions inherent in the models. The prediction by OOF was the closest to the experimental value because of the microstructure based approach which takes into account the fiber distribution and orientation during the finite element calculation. This was followed by characterization of fatigue behavior of LFT. Samples tested along longitudinal direction showed a higher fatigue life than the transverse samples because of the preferred orientation of the fibers along the longitudinal direction developed during the processing of LFT by extrusioncompression molding process. Fatigue life decreased with increase in frequency. Hysteretic energy loss and temperature rise were measured; they depended on the stress amplitude as well as the cyclic frequency. LFT composite showed a lower temperature rise compared to neat PP because LFT has higher thermal conductivity than neat PP and thus faster heat dissipation to the surroundings occur. The hysteretic heating also led to decrease in the modulus of LFT as a function of number of cycles. The last part of the work was to study the effect of ultraviolet (UV) exposure on the microstructure and mechanical properties of LFT. Microscopic observations revealed that the damage due to UV was confined only to the surface region in the form of surface cracking and exposure of fibers to the surface in the case of LFT. FTIR and nanoindentation results showed that there was a large increase in the crystallinity and local modulus of the surface layer due to UV exposure. The change in crystallinity and modulus of the surface layer occurs by chemicrystallization wherein the broken, smaller chains due to UV radiation rearrange into more crystalline form. This increase in crystallinity causes increase in the modulus of surface layer and results in cracking of the surface because tensile residual stresses are generated in the surface layer due to the change in crystallinity. The overall modulus of the LFT, however, decreased with increasing UV exposure time due to the formation of surface cracks.

xii, 122 p. : col. ill., digital, PDF file.

Materials Science and Engineering

Engineering

LFT Fatigue UV OOF Nanoindentation FTIR

UNRESTRICTED

Advisors/Committee Members: Chawla, Krishan K., Vaidya, Uday K.<br>, Dean, Derrick R.<br>, Chawla, Nikhilesh <br>, Weaver, Mark.

Subjects/Keywords: Thermoplastic composites – Mechanical properties <; br>; Thermoplastic composites – Fatigue <; br>; Thermoplastic composites – Environmental testing

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APA (6^th Edition):

Goel, A. (2008). Fatigue and environmental behavior of long fiber thermoplastic (LFT) composites. (Doctoral Dissertation). University of Alabama – Birmingham. Retrieved from http://contentdm.mhsl.uab.edu/u?/etd,230

Chicago Manual of Style (16^th Edition):

Goel, Ashutosh. “Fatigue and environmental behavior of long fiber thermoplastic (LFT) composites.” 2008. Doctoral Dissertation, University of Alabama – Birmingham. Accessed January 21, 2021. http://contentdm.mhsl.uab.edu/u?/etd,230.

MLA Handbook (7^th Edition):

Goel, Ashutosh. “Fatigue and environmental behavior of long fiber thermoplastic (LFT) composites.” 2008. Web. 21 Jan 2021.

Vancouver:

Goel A. Fatigue and environmental behavior of long fiber thermoplastic (LFT) composites. [Internet] [Doctoral dissertation]. University of Alabama – Birmingham; 2008. [cited 2021 Jan 21]. Available from: http://contentdm.mhsl.uab.edu/u?/etd,230.

Council of Science Editors:

Goel A. Fatigue and environmental behavior of long fiber thermoplastic (LFT) composites. [Doctoral Dissertation]. University of Alabama – Birmingham; 2008. Available from: http://contentdm.mhsl.uab.edu/u?/etd,230

University of New Mexico

8. Grigoriev, Mikhail. Large strain flexural testing of thin composite laminates.

Degree: Mechanical Engineering, 2012, University of New Mexico

URL: http://hdl.handle.net/1928/17432

► Carbon fiber composites are of significant interest for use in deployable space structures. Elastically folded thin laminates can be utilized as hinge mechanisms in structural… (more)

▼ Carbon fiber composites are of significant interest for use in deployable space structures. Elastically folded thin laminates can be utilized as hinge mechanisms in structural systems such as solar arrays, reflectors, and instrument booms, allowing for compact packaging during launch to orbit. While the initiative to utilize composite laminates in deployable structures has increased it also has faced difficulties in design and analysis of these poorly understood materials. Data from standardized ASTM test methods fails to characterize nonlinear constitutive behavior over the full large strain range common to deployable structures. Flexural behavior is characterized by the moment vs. curvature response therefore requiring a bending test. A special test fixture is developed to allow flexural testing of thin plates at large strains. Reaching large strains during the test provides an opportunity to investigate the large strain linear and nonlinear elastic constitutive behavior of glass and carbon fibers respectively. A flexural test campaign was carried out for three unidirectional continuous fiber reinforced plastic materials in a large deformation four point bending fixture. Intermediate and high modulus PAN and S2 fibers were tested because they are commonly used in deployable structures. The fixture is designed to apply load, which through translation and rotation of wheeled carts, induces a pure moment in the sample. We utilize a previously developed first order nonlinear empirical constitutive model to represent fiber axial tensile and compressive behavior and rule of mixtures with a linear matrix model for laminate behavior. We use algorithms for nonlinear curve fitting of moment-curvature response measured using the test fixture and fit for a nonlinear constitutive parameter and fiber volume fraction. Using previously reported nonlinear tension parameter for IM7 fiber of 21.4 we estimated for the fibers nonlinear compression parameter to be γ_C=20.7. For test data of S2 fiberglass made by A.G.Y. and M55J carbon fiber made by Toray® the fit model did not differentiate between nonlinear constitutive parameter in tension or compression. Analysis of the experimental data returned a large nonlinear constitutive parameter of 97.6 for M55J fiber and a small nonlinear constitutive parameter of 6.7 for S2.' Advisors/Committee Members: Taha, Mahmoud, Shen, Yu-Lin, Murphey, Thomas.

Subjects/Keywords: Laminated materials – Fatigue; Fibrous composites – Fatigue; Carbon fiber-reinforced plastics – Fatigue; Expandable space structures – Materials – Testing; Parameter estimation.

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APA (6^th Edition):

Grigoriev, M. (2012). Large strain flexural testing of thin composite laminates. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/17432

Chicago Manual of Style (16^th Edition):

Grigoriev, Mikhail. “Large strain flexural testing of thin composite laminates.” 2012. Masters Thesis, University of New Mexico. Accessed January 21, 2021. http://hdl.handle.net/1928/17432.

MLA Handbook (7^th Edition):

Grigoriev, Mikhail. “Large strain flexural testing of thin composite laminates.” 2012. Web. 21 Jan 2021.

Vancouver:

Grigoriev M. Large strain flexural testing of thin composite laminates. [Internet] [Masters thesis]. University of New Mexico; 2012. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/1928/17432.

Council of Science Editors:

Grigoriev M. Large strain flexural testing of thin composite laminates. [Masters Thesis]. University of New Mexico; 2012. Available from: http://hdl.handle.net/1928/17432

Michigan State University

9. Tayal, Motilal J. Acoustic emission associated with interfacial failure of Cu-Ni layered composites.

Degree: MS, Department of Metallurgy, Mechanics, and Materials Science, 1986, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:23643

Subjects/Keywords: Copper-nickel alloys; Metallic composites – Testing; Acoustic emission; Metallic composites – Fracture

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APA (6^th Edition):

Tayal, M. J. (1986). Acoustic emission associated with interfacial failure of Cu-Ni layered composites. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:23643

Chicago Manual of Style (16^th Edition):

Tayal, Motilal J. “Acoustic emission associated with interfacial failure of Cu-Ni layered composites.” 1986. Masters Thesis, Michigan State University. Accessed January 21, 2021. http://etd.lib.msu.edu/islandora/object/etd:23643.

MLA Handbook (7^th Edition):

Tayal, Motilal J. “Acoustic emission associated with interfacial failure of Cu-Ni layered composites.” 1986. Web. 21 Jan 2021.

Vancouver:

Tayal MJ. Acoustic emission associated with interfacial failure of Cu-Ni layered composites. [Internet] [Masters thesis]. Michigan State University; 1986. [cited 2021 Jan 21]. Available from: http://etd.lib.msu.edu/islandora/object/etd:23643.

Council of Science Editors:

Tayal MJ. Acoustic emission associated with interfacial failure of Cu-Ni layered composites. [Masters Thesis]. Michigan State University; 1986. Available from: http://etd.lib.msu.edu/islandora/object/etd:23643

Ryerson University

10. Samani, Shirin Ghatreh. Structural performance of link slabs subjected to monotonic and fatigue loading incorporating engineered cementitious composites.

Degree: 2015, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A3722

► This research presents the results of experimental investigation conducted on 1/4th scale link slabs subjected to monotonic and fatigue loading incorporating different ECC mixtures and… (more)

Subjects/Keywords: Cement composites – Mechanical properties; Self-consolidating concrete – Testing; Bridges – Design and construction; Cement composites – Fatigue; Strains and stresses

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APA (6^th Edition):

Samani, S. G. (2015). Structural performance of link slabs subjected to monotonic and fatigue loading incorporating engineered cementitious composites. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A3722

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):

Samani, Shirin Ghatreh. “Structural performance of link slabs subjected to monotonic and fatigue loading incorporating engineered cementitious composites.” 2015. Thesis, Ryerson University. Accessed January 21, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A3722.

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

MLA Handbook (7^th Edition):

Samani, Shirin Ghatreh. “Structural performance of link slabs subjected to monotonic and fatigue loading incorporating engineered cementitious composites.” 2015. Web. 21 Jan 2021.

Vancouver:

Samani SG. Structural performance of link slabs subjected to monotonic and fatigue loading incorporating engineered cementitious composites. [Internet] [Thesis]. Ryerson University; 2015. [cited 2021 Jan 21]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3722.

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

Council of Science Editors:

Samani SG. Structural performance of link slabs subjected to monotonic and fatigue loading incorporating engineered cementitious composites. [Thesis]. Ryerson University; 2015. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3722

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

University of Southern California

11. Kar, Nikhil Kumar. Fatigue and fracture of pultruded composite rods developed for overhead conductor cables.

Degree: PhD, Mechanical Engineering, 2012, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2775

► Polymer matrix composites (PMCs) have been used extensively in the aerospace industry for the past five decades. There has been an upsurge in the use… (more)

Subjects/Keywords: composites; fatigue; durability

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APA (6^th Edition):

Kar, N. K. (2012). Fatigue and fracture of pultruded composite rods developed for overhead conductor cables. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2775

Chicago Manual of Style (16^th Edition):

Kar, Nikhil Kumar. “Fatigue and fracture of pultruded composite rods developed for overhead conductor cables.” 2012. Doctoral Dissertation, University of Southern California. Accessed January 21, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2775.

MLA Handbook (7^th Edition):

Kar, Nikhil Kumar. “Fatigue and fracture of pultruded composite rods developed for overhead conductor cables.” 2012. Web. 21 Jan 2021.

Vancouver:

Kar NK. Fatigue and fracture of pultruded composite rods developed for overhead conductor cables. [Internet] [Doctoral dissertation]. University of Southern California; 2012. [cited 2021 Jan 21]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2775.

Council of Science Editors:

Kar NK. Fatigue and fracture of pultruded composite rods developed for overhead conductor cables. [Doctoral Dissertation]. University of Southern California; 2012. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/56090/rec/2775

Ryerson University

12. Zhang, Qian. A New Model for Predicting Low Cycle Fatigue Behavior of Discontinuously Reinforced Metal Matrix Composites.

Degree: 2004, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A2373

► An analytical model for predicitng the crack inititation life of low cycle fatique (LCF) of discontinuously reinforced metal matrix composites (DR-MMCs) has been proposed. The… (more)

Subjects/Keywords: Metallic composites

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APA (6^th Edition):

Zhang, Q. (2004). A New Model for Predicting Low Cycle Fatigue Behavior of Discontinuously Reinforced Metal Matrix Composites. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A2373

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):

Zhang, Qian. “A New Model for Predicting Low Cycle Fatigue Behavior of Discontinuously Reinforced Metal Matrix Composites.” 2004. Thesis, Ryerson University. Accessed January 21, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A2373.

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

MLA Handbook (7^th Edition):

Zhang, Qian. “A New Model for Predicting Low Cycle Fatigue Behavior of Discontinuously Reinforced Metal Matrix Composites.” 2004. Web. 21 Jan 2021.

Vancouver:

Zhang Q. A New Model for Predicting Low Cycle Fatigue Behavior of Discontinuously Reinforced Metal Matrix Composites. [Internet] [Thesis]. Ryerson University; 2004. [cited 2021 Jan 21]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2373.

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

Council of Science Editors:

Zhang Q. A New Model for Predicting Low Cycle Fatigue Behavior of Discontinuously Reinforced Metal Matrix Composites. [Thesis]. Ryerson University; 2004. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A2373

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

Hong Kong University of Science and Technology

13. Li, Huacheng. Development of chemistry for the synthesis of seven-membered metallacycles.

Degree: 2016, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-87139 ; https://doi.org/10.14711/thesis-b1626098 ; http://repository.ust.hk/ir/bitstream/1783.1-87139/1/th_redirect.html

► Treatment of Pd(PPh₃)₄ or Pd(dba)₂ (dba = dibenzylideneacetone) with different functionalized aryl bromides in toluene produced Pd(II)Br(Ar) complexes. Complexes PdBr(C₆H₄C≡CC₆H₄Br)(PPh₃)₂ (23) and PdBr(C₆H₄CHO)(PPh₃)₂ (32) can… (more)

Subjects/Keywords: Metallic composites ; Complex compounds

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APA (6^th Edition):

Li, H. (2016). Development of chemistry for the synthesis of seven-membered metallacycles. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-87139 ; https://doi.org/10.14711/thesis-b1626098 ; http://repository.ust.hk/ir/bitstream/1783.1-87139/1/th_redirect.html

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):

Li, Huacheng. “Development of chemistry for the synthesis of seven-membered metallacycles.” 2016. Thesis, Hong Kong University of Science and Technology. Accessed January 21, 2021. http://repository.ust.hk/ir/Record/1783.1-87139 ; https://doi.org/10.14711/thesis-b1626098 ; http://repository.ust.hk/ir/bitstream/1783.1-87139/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Li, Huacheng. “Development of chemistry for the synthesis of seven-membered metallacycles.” 2016. Web. 21 Jan 2021.

Vancouver:

Li H. Development of chemistry for the synthesis of seven-membered metallacycles. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2016. [cited 2021 Jan 21]. Available from: http://repository.ust.hk/ir/Record/1783.1-87139 ; https://doi.org/10.14711/thesis-b1626098 ; http://repository.ust.hk/ir/bitstream/1783.1-87139/1/th_redirect.html.

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

Council of Science Editors:

Li H. Development of chemistry for the synthesis of seven-membered metallacycles. [Thesis]. Hong Kong University of Science and Technology; 2016. Available from: http://repository.ust.hk/ir/Record/1783.1-87139 ; https://doi.org/10.14711/thesis-b1626098 ; http://repository.ust.hk/ir/bitstream/1783.1-87139/1/th_redirect.html

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

Hong Kong University of Science and Technology

14. Wong, Chi Cheong. Fabrication and characterizations of metallic nanostructured materials.

Degree: 2011, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7378 ; https://doi.org/10.14711/thesis-b1154905 ; http://repository.ust.hk/ir/bitstream/1783.1-7378/1/th_redirect.html

► In this research, effective infiltration and deposition of metals into mesopores are achieved by supercritical fluid deposition (SFD) and modified chemical vapour deposition (CVD). A… (more)

Subjects/Keywords: Nanostructured materials ; Metallic composites ; Platinum

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APA (6^th Edition):

Wong, C. C. (2011). Fabrication and characterizations of metallic nanostructured materials. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7378 ; https://doi.org/10.14711/thesis-b1154905 ; http://repository.ust.hk/ir/bitstream/1783.1-7378/1/th_redirect.html

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):

Wong, Chi Cheong. “Fabrication and characterizations of metallic nanostructured materials.” 2011. Thesis, Hong Kong University of Science and Technology. Accessed January 21, 2021. http://repository.ust.hk/ir/Record/1783.1-7378 ; https://doi.org/10.14711/thesis-b1154905 ; http://repository.ust.hk/ir/bitstream/1783.1-7378/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Wong, Chi Cheong. “Fabrication and characterizations of metallic nanostructured materials.” 2011. Web. 21 Jan 2021.

Vancouver:

Wong CC. Fabrication and characterizations of metallic nanostructured materials. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2011. [cited 2021 Jan 21]. Available from: http://repository.ust.hk/ir/Record/1783.1-7378 ; https://doi.org/10.14711/thesis-b1154905 ; http://repository.ust.hk/ir/bitstream/1783.1-7378/1/th_redirect.html.

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

Council of Science Editors:

Wong CC. Fabrication and characterizations of metallic nanostructured materials. [Thesis]. Hong Kong University of Science and Technology; 2011. Available from: http://repository.ust.hk/ir/Record/1783.1-7378 ; https://doi.org/10.14711/thesis-b1154905 ; http://repository.ust.hk/ir/bitstream/1783.1-7378/1/th_redirect.html

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

Michigan State University

15. Ambriz, Julian E. (Julian Escareno). The processing and characterization of FeCrAlY/Al₂O₃ composites.

Degree: MS, Department of Materials Science and Mechanics, 1996, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:25361

Subjects/Keywords: Metallic composites

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APA (6^th Edition):

Ambriz, J. E. (. E. (1996). The processing and characterization of FeCrAlY/Al₂O₃ composites. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:25361

Chicago Manual of Style (16^th Edition):

Ambriz, Julian E (Julian Escareno). “The processing and characterization of FeCrAlY/Al₂O₃ composites.” 1996. Masters Thesis, Michigan State University. Accessed January 21, 2021. http://etd.lib.msu.edu/islandora/object/etd:25361.

MLA Handbook (7^th Edition):

Ambriz, Julian E (Julian Escareno). “The processing and characterization of FeCrAlY/Al₂O₃ composites.” 1996. Web. 21 Jan 2021.

Vancouver:

Ambriz JE(E. The processing and characterization of FeCrAlY/Al₂O₃ composites. [Internet] [Masters thesis]. Michigan State University; 1996. [cited 2021 Jan 21]. Available from: http://etd.lib.msu.edu/islandora/object/etd:25361.

Council of Science Editors:

Ambriz JE(E. The processing and characterization of FeCrAlY/Al₂O₃ composites. [Masters Thesis]. Michigan State University; 1996. Available from: http://etd.lib.msu.edu/islandora/object/etd:25361

University of British Columbia

16. Pageau, Gilles. A study of the high strain rate behaviour of particle-reinforced metal matrix composites.

Degree: Master of Applied Science - MASc, Materials Engineering, 1991, University of British Columbia

URL: http://hdl.handle.net/2429/30031

► This thesis presents the results of an experimental and analytical study of the high strain rate behaviour of ceramic particle-reinforced metal matrix composites (MMC). Two… (more)

▼ This thesis presents the results of an experimental and analytical study of the high strain rate behaviour of ceramic particle-reinforced metal matrix composites (MMC). Two MMC systems, both based on the 6061-T6 aluminum matrix, were selected. The first is an alumina reinforced system, made by a liquid metallurgy (LM) route, with 10, 15 and 20% particle volume fractions. The second is a silicon carbide system, made by powder metallurgy (PM), with 0, 15 and 30% particle volume fractions. Unreinforced 6061-T6 and 7075-T6 were also included for comparison. Quasi-static tensile tests, Taylor impact tests, and high velocity penetration tests were conducted. The tension test results indicated that the reinforcement strongly affects the stiffness, strength and ductility. Some anisotropy was also observed. The Young's modulus values for both system are in good agreement with predictions from simple two-phase theoretical models. An experimental facility was constructed which is capable of accelerating small cylindrical impactors at velocities up to 1000 m/s and allow for accurate measurement of the impact velocity. The facility was designed so that both Taylor and dynamic penetration tests could be performed with only minor modifications. The Taylor test was used to characterize the strength of the MMC selected under conditions comparable to those existing in dynamic penetration. It consists of impacting short cylindrical specimens on a flat rigid anvil at velocities ranging from 150 to 300 m/s. The dynamic yield strength was determined from measurements of the deformed shape of the specimen using one-dimensional analysis models. The results were shown to be quite dependent on the analysis model used for calculation. Results show that the dynamic strength is noticeably increased over the quasi-static values. The strain rate sensitivity of the MMC materials also appeared to be more pronounced. Measurements of the tested specimen profiles revealed some asymmetry which can be attributed to yield strength anisotropy. The MMC specimens also appeared to be more susceptible to radial cracking at the impact face. The effects of adiabatic heating and inertia within the specimen were also investigated. To assess the relative impact performance of the selected materials, dynamic penetration tests were conducted by firing small rigid tungsten rods with spherical noses on to MMC cylindrical targets with a diameter of 50 mm and a length of 150 mm. Tests were performed at three average impact velocities of 475, 750 and 920 m/s. The cavity profiles were determined from X-ray photographs. The dynamic penetration tests indicate that the PM-processed materials are more resistant to penetration than the LM-processed materials, with the difference being more significant at higher volume fractions. At low velocities (475 m/s) large scale radial cracking of the highly reinforced MMC was observed. The penetration depths were predicted using an approximate cavity expansion model developed for monolithic metals and which involves only a few…

Subjects/Keywords: Metallic composites

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APA (6^th Edition):

Pageau, G. (1991). A study of the high strain rate behaviour of particle-reinforced metal matrix composites. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/30031

Chicago Manual of Style (16^th Edition):

Pageau, Gilles. “A study of the high strain rate behaviour of particle-reinforced metal matrix composites.” 1991. Masters Thesis, University of British Columbia. Accessed January 21, 2021. http://hdl.handle.net/2429/30031.

MLA Handbook (7^th Edition):

Pageau, Gilles. “A study of the high strain rate behaviour of particle-reinforced metal matrix composites.” 1991. Web. 21 Jan 2021.

Vancouver:

Pageau G. A study of the high strain rate behaviour of particle-reinforced metal matrix composites. [Internet] [Masters thesis]. University of British Columbia; 1991. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/2429/30031.

Council of Science Editors:

Pageau G. A study of the high strain rate behaviour of particle-reinforced metal matrix composites. [Masters Thesis]. University of British Columbia; 1991. Available from: http://hdl.handle.net/2429/30031

University of New South Wales

17. Biletska, Olga. Design and fabrication of ductile in situ bulk metallic glass composites.

Degree: Materials Science & Engineering, 2014, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/54699 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35599/SOURCE02?view=true

► Bulk metallic glasses (BMGs) possessing high strength and elasticity are excellent candidates for the high-demanding market of advanced materials. Inherent brittleness of the amorphous structure,… (more)

▼ Bulk metallic glasses (BMGs) possessing high strength and elasticity are excellent candidates for the high-demanding market of advanced materials. Inherent brittleness of the amorphous structure, however, inhibits wide use of the metallic glasses as structural materials. The problem of low plasticity and toughness can be alleviated through formation of a composite structure containing crystalline phase(s) in the high-strength amorphous matrix. In this thesis, bulk metallic glass composites have been produced in different glass-forming systems. By utilising a copper mold casting method, a series of BMG composites with high Mg concentration (>80 at. %) was fabricated in the Mg-Ni-Gd and Mg-Ni-Gd-Y systems. Zr-rich BMG composites were produced in Zr-Cu-Ni-Al alloy system by arc-melting. To promote formation of crystalline phases in Zr-based glasses, Y2O3 particles were introduced to the melt as possible inoculants. The conditions for formation of amorphous, amorphous-crystalline and completely crystalline structures were found to be dependent on alloy chemistry and sample thickness in both the Mg and Zr-based systems. Stability of the amorphous matrix and devitrification processes during heating were investigated in the Mg-based system. The precipitation of a soft primary Mg-rich phase in the monolithic glass was observed in the compositions with Mg content ≥ 84 at. %. Soft crystallites homogeneously dispersed throughout the Mg-rich glassy matrix enhanced the plasticity of the resulting composite structure with a compressive plastic strain to failure of ~9.5 %. For the Zr-Cu-Ni-Al system, the formation of a monolithic amorphous structure and composite structure was observed for a maximum Zr content of 76 and 72 at. %, respectively. The initiation or suppression of crystalline phase growth on the surface of inoculating Y2O3 particles in the Zr-based glass was dependent on the cooling rate during casting. The glass-forming ability and thermal stability of the Zr-rich composite alloys was affected by these inoculating particles. The relatively high glass transition temperatures of the Mg-based composites, their low density (2.4 - 2.6 g/cm3) and improved plastic strain to failure may prove useful for future lightweight engineering applications. Heterogeneous nucleation of crystalline phases on the surface of oxide particles introduced into amorphous high Zr-bearing matrix shows possibilities for generating new types of the composite structures. Advisors/Committee Members: Ferry, Michael, Materials Science & Engineering, Faculty of Science, UNSW, Laws, Kevin, Materials Science & Engineering, Faculty of Science, UNSW.

Subjects/Keywords: Bulk metallic glass composites

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APA (6^th Edition):

Biletska, O. (2014). Design and fabrication of ductile in situ bulk metallic glass composites. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54699 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35599/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Biletska, Olga. “Design and fabrication of ductile in situ bulk metallic glass composites.” 2014. Doctoral Dissertation, University of New South Wales. Accessed January 21, 2021. http://handle.unsw.edu.au/1959.4/54699 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35599/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Biletska, Olga. “Design and fabrication of ductile in situ bulk metallic glass composites.” 2014. Web. 21 Jan 2021.

Vancouver:

Biletska O. Design and fabrication of ductile in situ bulk metallic glass composites. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2021 Jan 21]. Available from: http://handle.unsw.edu.au/1959.4/54699 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35599/SOURCE02?view=true.

Council of Science Editors:

Biletska O. Design and fabrication of ductile in situ bulk metallic glass composites. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/54699 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35599/SOURCE02?view=true

Ryerson University

18. Krimbalis, Peter P. On The Development Of A Strength Prediction Methodology For Fibre Metal Laminates In Pin Bearing.

Degree: 2009, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1994

► The development of Fibre Metal Laminates (FMLs) for application into aerospace structures represents a paradigm shift in airframe and material technology. By consolidating both monlithic… (more)

▼ The development of Fibre Metal Laminates (FMLs) for application into aerospace structures represents a paradigm shift in airframe and material technology. By consolidating both monlithic metallic alloys and fibre reinforced composite layers, a new material structure is born exhibiting desired qualities emerging from its heterogeneous consituency. When mechanically fastened via pins, bolts and rivets, these laminated materials develop damage and ultimately fail via mechanisms that were not entirely understood and different than either their metallic or composite constituents. The development of a predictive methodology capable of characterizing how FMLs fastened with pins behave and fail would drastically reduce the amount of experimentation necessary for material qualification and be an invaluable design tool.The body of this thesis discusses the extension of the characteristic dimension approach to FMLS and the subsequent development of a new failure mechanism as part of a progressive damage infinte element (FE) modeling methodology with yielding, delamination and buckling representing the central tenets of the new mechanism. This yielding through delamination buckling (YDB) mechanism and progressive FE model were investigated through multiple experimental studies. The experimental investigations required the development of a protocol with emphasis on measuring deformation on a local scheme in addition to a global one. With the extended protocol employed, complete characterization of the material response was possbile and a new definition for yield in a pin bearing configuration was developed and subsequently extended to a tensile testing configuraiton. The performance of this yield definition was compared directly to existing definitions and was shown to be effective in both quasi-isotropic and orthotropic materials.The results of the experiments and FE simulations demonstrated that yielding (according to the new definition), buckling and delamination resulting in joint collapse and failure have all occurred within the stipulated predictions of the YDB mechanism. Advisors/Committee Members: Ryerson University (Degree grantor).

Subjects/Keywords: Airplanes – Fuselage – Materials; Airframes – Fatigue; Laminated materials – Mechanical properties; Laminated materials – Fracture – Mathematical models; Fibrous composites – Fracture – Mathematical models; Metallic composites – Fracture – Mathematical models

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APA (6^th Edition):

Krimbalis, P. P. (2009). On The Development Of A Strength Prediction Methodology For Fibre Metal Laminates In Pin Bearing. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1994

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):

Krimbalis, Peter P. “On The Development Of A Strength Prediction Methodology For Fibre Metal Laminates In Pin Bearing.” 2009. Thesis, Ryerson University. Accessed January 21, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1994.

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

MLA Handbook (7^th Edition):

Krimbalis, Peter P. “On The Development Of A Strength Prediction Methodology For Fibre Metal Laminates In Pin Bearing.” 2009. Web. 21 Jan 2021.

Vancouver:

Krimbalis PP. On The Development Of A Strength Prediction Methodology For Fibre Metal Laminates In Pin Bearing. [Internet] [Thesis]. Ryerson University; 2009. [cited 2021 Jan 21]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1994.

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

Council of Science Editors:

Krimbalis PP. On The Development Of A Strength Prediction Methodology For Fibre Metal Laminates In Pin Bearing. [Thesis]. Ryerson University; 2009. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1994

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

Delft University of Technology

19. Broer, Agnes (author). Fatigue life prediction of carbon fibre-reinforced epoxy laminates using a single S-N curve.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:6c91fc86-f496-4ef1-bb1d-135f9497085b

► Fatigue life prediction models, used in the design and analysis of cyclic loaded structures, often require experimental data in order to interpolate or extrapolate fatigue… (more)

Subjects/Keywords: Carbon-Epoxy; Composites; Constant Amplitude Loading; Constant Life Diagram; Fatigue; Fatigue Life Prediction; Mechanical Testing; S-N Curves

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APA (6^th Edition):

Broer, A. (. (2018). Fatigue life prediction of carbon fibre-reinforced epoxy laminates using a single S-N curve. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6c91fc86-f496-4ef1-bb1d-135f9497085b

Chicago Manual of Style (16^th Edition):

Broer, Agnes (author). “Fatigue life prediction of carbon fibre-reinforced epoxy laminates using a single S-N curve.” 2018. Masters Thesis, Delft University of Technology. Accessed January 21, 2021. http://resolver.tudelft.nl/uuid:6c91fc86-f496-4ef1-bb1d-135f9497085b.

MLA Handbook (7^th Edition):

Broer, Agnes (author). “Fatigue life prediction of carbon fibre-reinforced epoxy laminates using a single S-N curve.” 2018. Web. 21 Jan 2021.

Vancouver:

Broer A(. Fatigue life prediction of carbon fibre-reinforced epoxy laminates using a single S-N curve. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 21]. Available from: http://resolver.tudelft.nl/uuid:6c91fc86-f496-4ef1-bb1d-135f9497085b.

Council of Science Editors:

Broer A(. Fatigue life prediction of carbon fibre-reinforced epoxy laminates using a single S-N curve. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:6c91fc86-f496-4ef1-bb1d-135f9497085b

University of Johannesburg

20. Madzivhandila, Takalani. Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/8034

►

M.Tech.

The mining industry exerts ever increasing demand for components with high wear resistance to the extent that plain ferrous alloys are falling short. Innovative… (more)

▼

M.Tech.

The mining industry exerts ever increasing demand for components with high wear resistance to the extent that plain ferrous alloys are falling short. Innovative metal-matrix composites nonferrous metals have been widely researched and used. Casting composites based on ferrous alloys pose monumental challenges in casting. Firstly, the density differential results in large resistant forces on the ceramic such that unless a rigid structure is configured, the less dense ceramic floats on the metal stream. Secondly, the poor wetting properties between metal and ceramic will result in inferior bonding of the matrix, hence separation of solids in service.This study presents the feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application including wettability and the bonding between the matrix and the composite. The cold rods of alumina positioned in the mould prior to casting cracked as soon as they came in contact with hot metal. Because of the density difference between ceramic and liquid metal the alumina tended to float under the influence of Ferro static pressure. Infiltration of zirconia (ZrO2) and alumina (Al2O3) in ferrous matrix was investigated. Infiltration of liquid metal in ceramic filters increased with porosity of filters i.e. greater infiltration occurred in filters with larger pore volume fraction measured in terms of number of pores per linear inch (ppi). Thus, there was high infiltration in casting with 10ppi followed by 30ppi and there was poor infiltration in 50ppi ceramics. Infiltration increased with increasing temperature of the ceramics. A temperature of 1000 °C was found to be superior to 800 °C. The wetting behaviour of molten iron on the substrates of Al2O3 was investigated. Titanium in high chromium white cast iron was found to improve the wetting characteristics on alumina. The wetting angle decreased with increased titanium content. The wear properties of ferrous alloys used were not significantly improved by the ceramic used to make the composite. Filters are produced by a deposition process and hence are not densified for the purpose of manufacturing hard composites

Subjects/Keywords: Ceramic-matrix composites; Metallic composites; Ceramic fibers

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APA (6^th Edition):

Madzivhandila, T. (2012). Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/8034

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):

Madzivhandila, Takalani. “Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application.” 2012. Thesis, University of Johannesburg. Accessed January 21, 2021. http://hdl.handle.net/10210/8034.

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

MLA Handbook (7^th Edition):

Madzivhandila, Takalani. “Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application.” 2012. Web. 21 Jan 2021.

Vancouver:

Madzivhandila T. Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/10210/8034.

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

Council of Science Editors:

Madzivhandila T. Feasibility of manufacturing ceramic based metal matrix composites (MMC) for multi-purpose industrial application. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/8034

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

University of New South Wales

21. Park, Bong Gyu. Fracture and fatigue of Al2O3 particulate reinforced metal matrix composites.

Degree: Materials Science & Engineering, 1997, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/56046 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39918/SOURCE02?view=true

Subjects/Keywords: Metallic composites; x Fracture; Aluminum oxide; Aluminum alloys; Metallic composites; x Fatigue; Thesis Digitisation Program

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APA (6^th Edition):

Park, B. G. (1997). Fracture and fatigue of Al2O3 particulate reinforced metal matrix composites. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/56046 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39918/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Park, Bong Gyu. “Fracture and fatigue of Al2O3 particulate reinforced metal matrix composites.” 1997. Doctoral Dissertation, University of New South Wales. Accessed January 21, 2021. http://handle.unsw.edu.au/1959.4/56046 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39918/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Park, Bong Gyu. “Fracture and fatigue of Al2O3 particulate reinforced metal matrix composites.” 1997. Web. 21 Jan 2021.

Vancouver:

Park BG. Fracture and fatigue of Al2O3 particulate reinforced metal matrix composites. [Internet] [Doctoral dissertation]. University of New South Wales; 1997. [cited 2021 Jan 21]. Available from: http://handle.unsw.edu.au/1959.4/56046 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39918/SOURCE02?view=true.

Council of Science Editors:

Park BG. Fracture and fatigue of Al2O3 particulate reinforced metal matrix composites. [Doctoral Dissertation]. University of New South Wales; 1997. Available from: http://handle.unsw.edu.au/1959.4/56046 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39918/SOURCE02?view=true

University of New South Wales

22. Yuan, Fei (Fred). Properties of titanium matrix composites reinforced with titanium boride powders.

Degree: Materials Science & Engineering, 2007, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/40750 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:5175/SOURCE1?view=true

► Metal matrix composites can produce mechanical and physical properties better than those of the monolithic metal. Titanium alloys are widely used matrix materials as they… (more)

▼ Metal matrix composites can produce mechanical and physical properties better than those of the monolithic metal. Titanium alloys are widely used matrix materials as they can offer outstanding specific strength, corrosion resistance and other advantages over its competitors, such as aluminium, magnesium and stainless steel. In past decades, titanium matrix composites served in broad areas, including aerospace, military, automobile and biomedical industries.In this project, a revised powder metallurgy method, which contains cold isostatic pressing and hot isostatic pressing, was adopted to refine the microstructure of monolithic titanium. It was also used to manufacture titanium matrix composites. TiH2 powder was selected as the starting material to form Ti matrix and the reinforcements were sub-micron and nano-metric TiB particles.Mechanical properties and microstructure of commercial titanium composites exhaust valves from Toyota Motor Corporation have been studied as the reference of properties of titanium composites manufactured in this project. It has been shown that tensile strength and hardness of exhaust valves increase about 30% than those of similar matrix titanium alloys. Examination on powder starting materials of this project was also carried out, especially the dehydrogenation process shown in the DSC result.Mechanical properties and microstructures of titanium matrix composites samples in this project, as related to the process parameter, have also been investigated. The density of these samples reached 96% of theoretical one but cracks were found through out the samples after sintering. Fast heating rates during the processing was suspected to have caused the crack formation, since the hydrogen release was too fast during dehydrogenation. Hardness testing of sintered samples was carried out and the value was comparable and even better than that of commercial exhaust valves and titanium composites in literature. Microstructure study shows that the size of reinforcements increased and the size of grains decreased as the increasing amount of TiB reinforcements. And this condition also resulted in the increasing amount of the acicular alpha structure.

Subjects/Keywords: Metallic composites – Mechanical properties; Metallic composites – Fatigue; Metallic composites – Fracture; Titanium – Mechanical properties; Titanium alloys – Fatigue; Titanium alloys – Fracture; Titanium alloys – Mechanical properties; Powder metallurgy; Thesis Digitisation Program

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APA (6^th Edition):

Yuan, F. (. (2007). Properties of titanium matrix composites reinforced with titanium boride powders. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/40750 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:5175/SOURCE1?view=true

Chicago Manual of Style (16^th Edition):

Yuan, Fei (Fred). “Properties of titanium matrix composites reinforced with titanium boride powders.” 2007. Masters Thesis, University of New South Wales. Accessed January 21, 2021. http://handle.unsw.edu.au/1959.4/40750 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:5175/SOURCE1?view=true.

MLA Handbook (7^th Edition):

Yuan, Fei (Fred). “Properties of titanium matrix composites reinforced with titanium boride powders.” 2007. Web. 21 Jan 2021.

Vancouver:

Yuan F(. Properties of titanium matrix composites reinforced with titanium boride powders. [Internet] [Masters thesis]. University of New South Wales; 2007. [cited 2021 Jan 21]. Available from: http://handle.unsw.edu.au/1959.4/40750 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:5175/SOURCE1?view=true.

Council of Science Editors:

Yuan F(. Properties of titanium matrix composites reinforced with titanium boride powders. [Masters Thesis]. University of New South Wales; 2007. Available from: http://handle.unsw.edu.au/1959.4/40750 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:5175/SOURCE1?view=true

Texas State University – San Marcos

23. Akinola, Adekunle Temitope. Fatigue Performance of Glass/Epoxy Nanocomposites for Wind Turbine Blades.

Degree: MS, School of Engineering, 2010, Texas State University – San Marcos

URL: https://digital.library.txstate.edu/handle/10877/8821

► Wind power is capable of becoming a major contributor to America’s electricity supply over the next three decades (Composite world, 2008). This desire is borne… (more)

▼ Wind power is capable of becoming a major contributor to America’s electricity supply over the next three decades (Composite world, 2008). This desire is borne to create a sustainable energy that will be cheap and easily adapted by people irrespective of their geographical locations. Recently, there is a growing interest in designing cheap and efficient turbine blades. Polymer matrix composites (E-glass/Epoxy) dominate the wind turbine blade market because of their low-cost, superior fatigue characteristics, high specific stiffness, and ability to make complex geometries. Different sizes of wind turbine blades can be produced depending on the desired amount of power to be generated. The length of wind turbine blade is proportional to the energy generated by the turbine and this is the simple reason why longer blades are commonly designed by most wind turbine blade designers. Wind turbine failure is a major issue as failure rates are as high as 20% within three years (Richardson, 2009). Major causes of wind turbine failures are bad bonds, delamination, voids and also manufacturing errors. Nanoparticles have been discovered to enhance mechanical properties of existing materials (Blackman et al., 2007). The overall objective of this research is to develop and manufacture glass/epoxy nanocomposites in conjunction with low cost vacuum assisted resin transfer molding (VARTM) for improved fatigue performance. EPIKOTE RIMR 135 epoxy resin was used which has been specially formulated for wind turbine applications by Hexion specialty Inc. Non-crimp E-glass ±45° stitched bonded fabric from Saertex, Germany was used as reinforcement because of its overall balanced properties and low cost. Nanosilica and Halloysite nanotubes (HNT) were used to modify the epoxy resin system. Nanosilica did not pose any problem in dispersion because it was already dispersed in epoxy by the manufacturer, nanoresin AG. Germany. Three different loadings of Nanosilica (6, 7, and 8 weight percentages) were used in making composites and static tests were performed. Considerable improvements were recorded in tensile strength, tensile modulus, flexural strength, flexural modulus and interlaminar shear strength. Statistically, improvements in mechanical properties due to nanoparticle loading was found to be significant when compared to control (0 wt%) group. However, 6 weight percent (wt%) nanosilica nanocomposites showed much improvement in tensile strength and interlaminar shear strength (ILSS) over control composites (0 weight percent nanosilica). Control and 6 weight percent nanosilica were tested in axial tension-tension fatigue at 2Hz frequency and R ratio of 0.1. 6 weight percent. Nanosilica modification showed 10 and 3 times improvement in fatigue life in high-cycle and low-cycle fatigue, respectively. Halloysite nanotubes (HNT) was another nanoparticle that was used in this research. The uniform dispersion of HNT in epoxy was a challenge. Three different dispersion methods were explored; centrifugal mixing, high shear mixing and low shear mixing.… Advisors/Committee Members: Tate, Jitendra (advisor), Kelkar, Ajit D. (committee member), You, Byoung-Hee (committee member).

Subjects/Keywords: Nanostructured materials; Polymeric composites; Materials; Wind turbines; Fatigue; Testing

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APA (6^th Edition):

Akinola, A. T. (2010). Fatigue Performance of Glass/Epoxy Nanocomposites for Wind Turbine Blades. (Masters Thesis). Texas State University – San Marcos. Retrieved from https://digital.library.txstate.edu/handle/10877/8821

Chicago Manual of Style (16^th Edition):

Akinola, Adekunle Temitope. “Fatigue Performance of Glass/Epoxy Nanocomposites for Wind Turbine Blades.” 2010. Masters Thesis, Texas State University – San Marcos. Accessed January 21, 2021. https://digital.library.txstate.edu/handle/10877/8821.

MLA Handbook (7^th Edition):

Akinola, Adekunle Temitope. “Fatigue Performance of Glass/Epoxy Nanocomposites for Wind Turbine Blades.” 2010. Web. 21 Jan 2021.

Vancouver:

Akinola AT. Fatigue Performance of Glass/Epoxy Nanocomposites for Wind Turbine Blades. [Internet] [Masters thesis]. Texas State University – San Marcos; 2010. [cited 2021 Jan 21]. Available from: https://digital.library.txstate.edu/handle/10877/8821.

Council of Science Editors:

Akinola AT. Fatigue Performance of Glass/Epoxy Nanocomposites for Wind Turbine Blades. [Masters Thesis]. Texas State University – San Marcos; 2010. Available from: https://digital.library.txstate.edu/handle/10877/8821

Delft University of Technology

24. Cederløf, Daan (author). Durability of stiffened CFRP panels with initial delaminations.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:edf3c6f0-5360-4b63-8cbf-c17d04de68f5

►

A numerical fatigue delamination model is validated by means of experimental tests. Delamination is initiated on the skin-stiffener interface which, under cyclic compressive loading and… (more)

Subjects/Keywords: Composites; Fatigue; Cohesive Zone Model

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APA (6^th Edition):

Cederløf, D. (. (2018). Durability of stiffened CFRP panels with initial delaminations. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:edf3c6f0-5360-4b63-8cbf-c17d04de68f5

Chicago Manual of Style (16^th Edition):

Cederløf, Daan (author). “Durability of stiffened CFRP panels with initial delaminations.” 2018. Masters Thesis, Delft University of Technology. Accessed January 21, 2021. http://resolver.tudelft.nl/uuid:edf3c6f0-5360-4b63-8cbf-c17d04de68f5.

MLA Handbook (7^th Edition):

Cederløf, Daan (author). “Durability of stiffened CFRP panels with initial delaminations.” 2018. Web. 21 Jan 2021.

Vancouver:

Cederløf D(. Durability of stiffened CFRP panels with initial delaminations. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 21]. Available from: http://resolver.tudelft.nl/uuid:edf3c6f0-5360-4b63-8cbf-c17d04de68f5.

Council of Science Editors:

Cederløf D(. Durability of stiffened CFRP panels with initial delaminations. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:edf3c6f0-5360-4b63-8cbf-c17d04de68f5

Delft University of Technology

25. Mitrousias, Alexander (author). Predicting residual strength of composites after cyclic loading: A numerical, progressive damage analysis based approach.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:2d9019cc-01f3-47ba-84d1-61625c5e5c96

► As the demand on new lightweight materials increases due to economic and environmental reasons, fiber reinforced plastics seem an interesting solution. In order to maximize… (more)

Subjects/Keywords: Composites; Progressive Damage Analysis; Fatigue

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APA (6^th Edition):

Mitrousias, A. (. (2017). Predicting residual strength of composites after cyclic loading: A numerical, progressive damage analysis based approach. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:2d9019cc-01f3-47ba-84d1-61625c5e5c96

Chicago Manual of Style (16^th Edition):

Mitrousias, Alexander (author). “Predicting residual strength of composites after cyclic loading: A numerical, progressive damage analysis based approach.” 2017. Masters Thesis, Delft University of Technology. Accessed January 21, 2021. http://resolver.tudelft.nl/uuid:2d9019cc-01f3-47ba-84d1-61625c5e5c96.

MLA Handbook (7^th Edition):

Mitrousias, Alexander (author). “Predicting residual strength of composites after cyclic loading: A numerical, progressive damage analysis based approach.” 2017. Web. 21 Jan 2021.

Vancouver:

Mitrousias A(. Predicting residual strength of composites after cyclic loading: A numerical, progressive damage analysis based approach. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Jan 21]. Available from: http://resolver.tudelft.nl/uuid:2d9019cc-01f3-47ba-84d1-61625c5e5c96.

Council of Science Editors:

Mitrousias A(. Predicting residual strength of composites after cyclic loading: A numerical, progressive damage analysis based approach. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:2d9019cc-01f3-47ba-84d1-61625c5e5c96

University of Waterloo

26. McCleave, Brent. Cracking Behaviour of Glass Fibre-Reinforced Polymers under Combined Compression-Shear Cyclic Loading.

Degree: 2018, University of Waterloo

URL: http://hdl.handle.net/10012/13360

► A ply-level investigation into the cracking behaviour of E-glass/epoxy laminates under cyclic multiaxial loading was performed. Two laminate types were subjected to combined transverse compression-shear… (more)

▼ A ply-level investigation into the cracking behaviour of E-glass/epoxy laminates under cyclic multiaxial loading was performed. Two laminate types were subjected to combined transverse compression-shear loading: multidirectional laminates with generalized layups [0₂/θ₂/0₂/-θ₂]S and tubular laminates with layup [0F/90]S. Unidirectional and woven prepregs were obtained from Composite Materials Italy and manufactured into panels and cylinders at the National Research Council in Ottawa, Ontario, Canada. A series of quasistatic tests were performed to determine the in-plane strengths and elastic constants of the unidirectional lamina. From these data, multidirectional laminates [0₂/θ₂/0₂/-θ₂]S were designed such that their off-axis plies (θ, -θ) experience identical biaxial states of stress as the transverse plies (90°) in the tubes by virtue of shear extension coupling. Standard practises for specimen preparation and experimental setup were developed during this investigation. A method for preparing tubular specimens to prevent the application of bending loads during testing was established, along with the design and machining of fixtures for the same. Additionally, a method for visualizing the entire surface of the tubular specimens for crack initiation measurements was developed. Three ratios of ply-level shear stress to transverse compressive stress were considered (0.00, 0.21, 0.40), each being studied between 60% and 80% of the nominal ultimate transverse compressive strength of the ply. Measurements of crack initiation (i.e. ply failure) lifetime were obtained by in situ optical visualization, wherein lighting apparatus were used to highlight sub-critical cracks within the semi-transparent composite specimens. Several qualitative conclusions were established in this investigation. First and foremost, it was demonstrated that sub-critical cracks can be observed in compression-compression fatigue, and that the visibility of the cracks varies with the magnitudes of the combined load and torque. This contrasts with initial conjecture that compressed cracks would be invisible. Similarly, experimental results demonstrated that the stiffness of a laminate with compression cracks decreased over the lifetime of the specimen. Stress-life data indicated that as with tension-shear loading, the increasing presence of shear stress in compression-shear loading noticeably decreases the lifetime of a ply. It was also observed in initial tests that the combination of a multiaxial compressive stress state and the in situ constraining effects of adjacent plies within a laminate can increase the in situ transverse compressive strength and shear strength of a ply beyond is theoretical value by more than 50%. Delays and experimental complications have prevented this investigation from being concluded presently, however the standard practises established in this investigation will aid the efforts by additional contributors to accomplish its objectives more quantitatively. The additional work required comprises two…

Subjects/Keywords: Composites; Compression; Multiaxial Fatigue

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APA (6^th Edition):

McCleave, B. (2018). Cracking Behaviour of Glass Fibre-Reinforced Polymers under Combined Compression-Shear Cyclic Loading. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/13360

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):

McCleave, Brent. “Cracking Behaviour of Glass Fibre-Reinforced Polymers under Combined Compression-Shear Cyclic Loading.” 2018. Thesis, University of Waterloo. Accessed January 21, 2021. http://hdl.handle.net/10012/13360.

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

MLA Handbook (7^th Edition):

McCleave, Brent. “Cracking Behaviour of Glass Fibre-Reinforced Polymers under Combined Compression-Shear Cyclic Loading.” 2018. Web. 21 Jan 2021.

Vancouver:

McCleave B. Cracking Behaviour of Glass Fibre-Reinforced Polymers under Combined Compression-Shear Cyclic Loading. [Internet] [Thesis]. University of Waterloo; 2018. [cited 2021 Jan 21]. Available from: http://hdl.handle.net/10012/13360.

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

Council of Science Editors:

McCleave B. Cracking Behaviour of Glass Fibre-Reinforced Polymers under Combined Compression-Shear Cyclic Loading. [Thesis]. University of Waterloo; 2018. Available from: http://hdl.handle.net/10012/13360

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

Ryerson University

27. Alyousif, Ahmed. Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials.

Degree: 2016, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A5726

► Engineered cementitious composites (ECCs) are relatively new construction materials characterized by strain-hardening behavior under excessive tensile loading. The intrinsic selfhealing ability of cracks in ECC… (more)

Subjects/Keywords: Cement composites – Cracking; Cement composites – Mechanical properties; Cement composities – Fatigue, strains and stresses; Self-consolidating concrete – Testing; Self-consolidating concrete – Performance; Cement composities – Expansion and contraction

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APA (6^th Edition):

Alyousif, A. (2016). Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A5726

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):

Alyousif, Ahmed. “Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials.” 2016. Thesis, Ryerson University. Accessed January 21, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A5726.

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

MLA Handbook (7^th Edition):

Alyousif, Ahmed. “Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials.” 2016. Web. 21 Jan 2021.

Vancouver:

Alyousif A. Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials. [Internet] [Thesis]. Ryerson University; 2016. [cited 2021 Jan 21]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A5726.

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

Council of Science Editors:

Alyousif A. Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials. [Thesis]. Ryerson University; 2016. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A5726

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

Hong Kong University of Science and Technology

28. Hui, Yu PHYS. Production of metal microspheres via controlled capillary.

Degree: 2018, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-96243 ; https://doi.org/10.14711/thesis-991012655768403412 ; http://repository.ust.hk/ir/bitstream/1783.1-96243/1/th_redirect.html

► This thesis presents a novel method to fabricate uniform metal microspheres by a custom-made programmable apparatus via controlled capillary. The programmable apparatus consisted of a… (more)

▼ This thesis presents a novel method to fabricate uniform metal microspheres by a custom-made programmable apparatus via controlled capillary. The programmable apparatus consisted of a programmable module, a robotic mechanical arm and a droplet-formation module comprised of an aluminum cylindrical core that encompassed (1) a material reservoir, (2) a buffer compartment (buffer part) with an embedded heating element, and (3) a cooling compartment (cooling part) with a meter-long glass tube filled with glycerol: DI water solution. The internal heating element could reach a temperature up to 250°C for accommodating a wide range of materials with different melting temperatures, including but not limited to eutectic metal alloys. The size of metal microsphere was determined by a set of programmable parameters executed by the programmable module, to control the air pressure exerted at the orifice of capillary via two independent electronic solenoid valves. The air pressure inside the capillary manipulated the handling time of the molten metal alloy. The molten metal alloy in liquid form was forced out of the capillary under specific air pressure. Molten metal alloy liquid was then segregated to form metal microdroplets when they emerged from the capillary. These microdroplets subsequently entered the meter-long glass tube filled with glycerol and water solution in which microdroplets solidified to form metal microspheres. Bismuth (Bi)-based 117 alloy which forms molten metal at melting temperature of 46.5°C was used to fabricate the metal alloy microspheres. The diameter of the fabricated microspheres ranged from 30 μm to greater than 500 μm. This fabrication technique offers a new prototyping method to produce metal microspheres with good uniformity and yield, with a much lower price tag and reasonable production throughput. Such method offers not only flexibility in production quantity but also versatility in material compatibility and on-demand production. The production module could be, in principal, adopted to a variety of materials for different applications. In this report, the UV-curable polymer microspheres and formation of microdroplet arrays using the custom-made apparatus were also proposed with preliminary experimental results.

Subjects/Keywords: Microspheres ; Microdroplets ; Metallic composites ; Production engineering

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APA (6^th Edition):

Hui, Y. P. (2018). Production of metal microspheres via controlled capillary. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-96243 ; https://doi.org/10.14711/thesis-991012655768403412 ; http://repository.ust.hk/ir/bitstream/1783.1-96243/1/th_redirect.html

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):

Hui, Yu PHYS. “Production of metal microspheres via controlled capillary.” 2018. Thesis, Hong Kong University of Science and Technology. Accessed January 21, 2021. http://repository.ust.hk/ir/Record/1783.1-96243 ; https://doi.org/10.14711/thesis-991012655768403412 ; http://repository.ust.hk/ir/bitstream/1783.1-96243/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Hui, Yu PHYS. “Production of metal microspheres via controlled capillary.” 2018. Web. 21 Jan 2021.

Vancouver:

Hui YP. Production of metal microspheres via controlled capillary. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2018. [cited 2021 Jan 21]. Available from: http://repository.ust.hk/ir/Record/1783.1-96243 ; https://doi.org/10.14711/thesis-991012655768403412 ; http://repository.ust.hk/ir/bitstream/1783.1-96243/1/th_redirect.html.

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

Council of Science Editors:

Hui YP. Production of metal microspheres via controlled capillary. [Thesis]. Hong Kong University of Science and Technology; 2018. Available from: http://repository.ust.hk/ir/Record/1783.1-96243 ; https://doi.org/10.14711/thesis-991012655768403412 ; http://repository.ust.hk/ir/bitstream/1783.1-96243/1/th_redirect.html

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

Hong Kong University of Science and Technology

29. Ren, Changyou. Synthesis, structure, and properties of TLCP/MWNT composites.

Degree: 2012, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7477 ; https://doi.org/10.14711/thesis-b1165730 ; http://repository.ust.hk/ir/bitstream/1783.1-7477/1/th_redirect.html

► The objective of this thesis is to develop a high performance thermotropic liquid crystalline copolyesters (TLCP)/multi-walled carbon nanotubes (MWNTs) composites fiber. The TLCP is composed… (more)

▼ The objective of this thesis is to develop a high performance thermotropic liquid crystalline copolyesters (TLCP)/multi-walled carbon nanotubes (MWNTs) composites fiber. The TLCP is composed of multi-domains. The boundary of these domains has no preferred orientation, so called defects. These defects limit the molecular orientation during the fiber spinning process. Hence, how to reduce the defects is crucial for the preparation of high performance TLCP/MWNT composites fiber. In this thesis, we proposed one novel method to reduce the defect density of the TLCPs by the incorporation of small amount of MWNTs. The abundant benzene group in the TLCP backbone may interact with the MWNTs via π-π stacking to form core-shell structure. Because the dimension of MWNTs is much larger than the TLCP molecules, it will help reduce the defect density of the TLCPs. The TLCP/MWNT composites were prepared via in situ melt polymerization. A two-stage polycondensation procedure was employed in our process, where carboxylic acid modified MWNTs were dispersed in acetic anhydride via ultrasonication prior to being charged to the prepolymerization reactor together with monomers and catalysts for esterification reaction at 130 °C-200 °C. The esterified mixture was then fed into a polycondensation reactor at 280 °C‒320 °C. In this way, fully exfoliated MWNTs are dispersed in the TLCP matrix at concentrations up to 0.3 wt%. Systematic studies show that well dispersed MWNTs acted as “pseudo nucleation sites” for the nematic ordering in the adjacent TLCP melt. Thus the undrawn fibers show a smaller core region and higher overall orientational order. Consequently, the addition of MWNTs is not only effective in improving the mechanical stiffness but also toughness of the composites. For example, the 0.3 wt% TLCP/MWNT composite shows a 62%, 135% and 145% increase in Young’s modulus, tensile strength and toughness, respectively, in comparison with the pure TLCP. The highly oriented TLCP/MWNT composite fiber was prepared via the spinning process. Due to the higher overall orientational order of the composite, Young’s modulus and tensile strength of the composite fiber are 38% and 32%, respectively higher than that of the pure TLCP fiber. Thereafter, heat treatment is employed to further improve the tensile strength of the fibers. After being annealed at 260 °C for 48 h, the composites fiber shows tensile strength up to 2.16 GPa, which is 29% higher than the pure TLCP fiber. Keywords: thermotropic liquid crystalline copolyesters (TLCP), multi-walled carbon nanotubes (MWNTs), in situ polymerization, fiber spinning, heat treatment

Subjects/Keywords: Polymer liquid crystals ; Polymerization ; Metallic composites ; Nanotubes

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Ren, C. (2012). Synthesis, structure, and properties of TLCP/MWNT composites. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7477 ; https://doi.org/10.14711/thesis-b1165730 ; http://repository.ust.hk/ir/bitstream/1783.1-7477/1/th_redirect.html

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, Changyou. “Synthesis, structure, and properties of TLCP/MWNT composites.” 2012. Thesis, Hong Kong University of Science and Technology. Accessed January 21, 2021. http://repository.ust.hk/ir/Record/1783.1-7477 ; https://doi.org/10.14711/thesis-b1165730 ; http://repository.ust.hk/ir/bitstream/1783.1-7477/1/th_redirect.html.

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, Changyou. “Synthesis, structure, and properties of TLCP/MWNT composites.” 2012. Web. 21 Jan 2021.

Vancouver:

Ren C. Synthesis, structure, and properties of TLCP/MWNT composites. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2012. [cited 2021 Jan 21]. Available from: http://repository.ust.hk/ir/Record/1783.1-7477 ; https://doi.org/10.14711/thesis-b1165730 ; http://repository.ust.hk/ir/bitstream/1783.1-7477/1/th_redirect.html.

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

Council of Science Editors:

Ren C. Synthesis, structure, and properties of TLCP/MWNT composites. [Thesis]. Hong Kong University of Science and Technology; 2012. Available from: http://repository.ust.hk/ir/Record/1783.1-7477 ; https://doi.org/10.14711/thesis-b1165730 ; http://repository.ust.hk/ir/bitstream/1783.1-7477/1/th_redirect.html

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

Hong Kong University of Science and Technology

30. Wan, Ho Chuen CHEM. Structure and bonding study of monometallic complexes with non-innocent ligands and trimetallic complexes with dipyridylamido ligands.

Degree: 2019, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-101495 ; https://doi.org/10.14711/thesis-991012753768703412 ; http://repository.ust.hk/ir/bitstream/1783.1-101495/1/th_redirect.html

► DFT calculations were performed to analyse the structure and bonding of two types of transition metal complexes, monometallic complexes with non-innocent ligands and trimetallic extended… (more)

Subjects/Keywords: Metal bonding ; Ligands ; Metallic composites ; Complex compounds

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Wan, H. C. C. (2019). Structure and bonding study of monometallic complexes with non-innocent ligands and trimetallic complexes with dipyridylamido ligands. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-101495 ; https://doi.org/10.14711/thesis-991012753768703412 ; http://repository.ust.hk/ir/bitstream/1783.1-101495/1/th_redirect.html

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):

Wan, Ho Chuen CHEM. “Structure and bonding study of monometallic complexes with non-innocent ligands and trimetallic complexes with dipyridylamido ligands.” 2019. Thesis, Hong Kong University of Science and Technology. Accessed January 21, 2021. http://repository.ust.hk/ir/Record/1783.1-101495 ; https://doi.org/10.14711/thesis-991012753768703412 ; http://repository.ust.hk/ir/bitstream/1783.1-101495/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Wan, Ho Chuen CHEM. “Structure and bonding study of monometallic complexes with non-innocent ligands and trimetallic complexes with dipyridylamido ligands.” 2019. Web. 21 Jan 2021.

Vancouver:

Wan HCC. Structure and bonding study of monometallic complexes with non-innocent ligands and trimetallic complexes with dipyridylamido ligands. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2019. [cited 2021 Jan 21]. Available from: http://repository.ust.hk/ir/Record/1783.1-101495 ; https://doi.org/10.14711/thesis-991012753768703412 ; http://repository.ust.hk/ir/bitstream/1783.1-101495/1/th_redirect.html.

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

Council of Science Editors:

Wan HCC. Structure and bonding study of monometallic complexes with non-innocent ligands and trimetallic complexes with dipyridylamido ligands. [Thesis]. Hong Kong University of Science and Technology; 2019. Available from: http://repository.ust.hk/ir/Record/1783.1-101495 ; https://doi.org/10.14711/thesis-991012753768703412 ; http://repository.ust.hk/ir/bitstream/1783.1-101495/1/th_redirect.html

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

Open Access Theses and Dissertations