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 6 of 6 for “"Heterogeneous microstructure"”.
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Chemomechanics of calcium leaching of cement-based materials at different scales : the role of CH-dissolution and C-S-H degradation on strength and durability performance of materials and structures
… a three-level microstructural division of the heterogeneous microstructure of cement-based materials, a series of experimental and theoretical investigations is conducted leading to the development of a novel constitutive model and model-based simulations of the long-term mechanical performance …
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Modelling Thermal Conductivity of Porous Thermal Barrier Coatings for High-Temperature Aero Engines
… coat, and the super-alloy substrate. The highly heterogeneous microstructure of the TBC consists of defects such as pores, voids, and cracks of different sizes, which determine the coating’s final thermal and mechanical properties. The service lives of the coatings are dependent on these …
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Theoretical analysis and experimental investigation of contact fatigue and surface damage in prealloyed and diffusion bonded sintered steels
… In addition, the effect of compact density and microstructures of materials on the resistance to contact damage mechanisms was investigated. Density and microstructure were modified by varying green density, alloying elements, sintering temperature and time, and applying strengthening …
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Statistical nano-chemo-mechanical assessment of shale by wave dispersive spectroscopy and nanoindentation
… challenging task due to their complex chemistry, heterogeneous microstructure, and multiscale mechanical behaviors. This thesis aims at establishing the link between the composition and mechanics of shale materials at grain scales. A comprehensive experimental program forms the basis for the …
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Modeling the effect of debonding on the constitutive response of heterogeneous materials
Experimental studies have observed that particulate composite systems experience damage in three principal modes: failure of the interface between particle and binder; tearing of the matrix; and fracture of the particle. Interfacial debonding is often a precursor to the other failure processes and …
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Understanding the Structure-property Relationships of Solid-state Additively Manufactured Stainless-steel Coatings
… the presence of porosity, crystal defects, non-heterogeneous microstructure, and lack of ductility limited its physical/chemical performance. To address these defects, F SP was employed as a post-surface processing technique to modify the tribological, corrosion, tribo-corrosion, and …