Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Static mechanical properties"”.
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Microstructure modification for improved mechanical properties in A356 Al using friction stir processing
… aluminum alloys and study the changes in the mechanical properties of the modified regions...This dissertation work is divided into four papers. The first paper attempts to understand the microstructure evolution during FSP of A356. The second paper examines the influence of FSP on high cycle …
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The effect of the interphase/interface region on creep and creep rupture of thermoplastic composites
… effect of the interphase/interface region on the static mechanical properties, creep and creep rupture behavior of thermoplastic (J2) composites was investigated. The mechanical properties of the J2 composites were altered by systematic changes in fiber surface chemistry. Four fiber systems were …
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Acoustic Metamaterials at the Microscale
… materials allow for tunability of extreme static mechanical properties such as stiffness, Poisson’s ratio, or strength. However, dynamic and acoustic properties of micro-architected materials remain largely unexplored, partially because it is challenging to measure their response at these …
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Dynamic Mechanical Properties of Resilin
… stress relaxation. While much is known about the static mechanical properties of resilin, it is most often used dynamically by insects. Unfortunately, the dynamic mechanical properties of resilin over the biologically relevant frequency range are unknown. Here, nearly pure samples of resilin were …
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The modification of polymeric materials with plasticizers or elastomers
… profound changes in morphology and the resultant mechanical properties of the modified resins. Fracture toughness was most significantly improved using siloxanes containing at least 40% methyltrifluoropropyl siloxane or 20 and 40% diphenyl siloxane. Comparison of siloxane modifiers with butadiene …
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NEW GENERATION POLYMER CONCRETE INCORPORATING CARBON NANOTUBES
… Carbon Nano-Tubes (MWCNTs) was produced and its mechanical properties were investigated. Four mixes of PC with 0.0 (neat), 0.5, 1.0, and 1.5% MWCNTs, respectively, were prepared using low modulus polysulfide epoxy mixed with fine and coarse aggregate, or fine aggregate only. PC incorporated fine …
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New approaches to casting hypereutectic Al-Si alloys to achieve simultaneous refinement of primary silicon and modification of eutectic silicon
… hypereutectic Al-Si alloys with improvement in mechanical properties. The static mechanical properties of Al-Si produced by the solid-liquid duplex casting process are significantly better than conventionally cast untreated Al-Si and slightly better than conventionally cast Al-Si treated with P …
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Condition assessment of polyethylene pipeline systems
… and fatigue tests to assess the changes in the mechanical properties as function of ageing. The fatigue test procedure was developed to produce brittle fracture at laboratory scale within a shorter period of time as compared to existing procedures such as the hydrostatic test. A reference …
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A study on the effect of increased heat input on residual stress, microstructure evolution and mechanical properties in Ti6Al4V selective laser melting
… produced which determines the resultant mechanical properties. The focus of this project was to investigate the effect of increased heat input on residual stress, the development of microstructure and mechanical properties of Ti6Al4V specimens produced by the Aeroswift high (400 J/m) heat …
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Experimental and Numerical Investigation of the Micromechanical Behavior of Selective Laser Melted Ti-6Al-4V Cellular Lattices for Biomedical Applications
… engineered in order to tailor their properties according to the specific application. This aspect makes them particularly attractive for the manufacturing of bone prosthetics since, compared to traditional fully dense implants, although more complex to produce and with less …