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Showing 1 to 20 of 68 for “"brittle materials"”.
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Microstructure design of porous brittle materials
… Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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The static and dynamic fracture of brittle materials
Experiments on the behaviour of brittle materials, particularly quartz, during the initial period of loading, at the onset of fracture and during the stage of rapid crack propagation, have been performed in order to gain an insight into some of the fundamental processes of brittle fracture which …
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Deep penetration into frictional ductile and brittle materials
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1992.
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Theoretical study of thermal spalling of brittle materials
… component in the prediction of failure for brittle materials is not justified in general. Finally, the thermal spalling process in jet piercing operations is studied. The finite element model consists of a large axi-symmetric object subjected to a confined heat flux. The numerical results …
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Enhancing Mechanical Performance of Brittle Materials through Fiber Reinforcement
L'abstract è presente nell'allegato / the abstract is in the attachment
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A study of localized failure modes in brittle materials
… the need to accurately model the behaviour of materials which exhibit instabilities due to strain softening or geometric effects. Localization in finite element modelling of brittle materials such as concrete and rock is a relatively unexplored area in computational mechanics, and this work …
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Higher-order discontinuous modelling of fracturing in quasi-brittle materials
Quasi-brittle failure is characterised by material degradation, fracturing and potential interaction of fragmented parts. The computational description of this behaviour has presented significant challenges to the mechanics community over the past few decades, driven by the development of …
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Near Tip Mechanics of Stress Induced Microcracking in Brittle Materials
Typically ceramics are processed at high temperatures and cooled to ambient. This causes thermal stresses dominated by expansion mismatches in multiphase ceramics and thermal expansion anisotropies in single phase systems. If the material microstructure (grain size in single phase systems or …
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Fracture process zone : microstructure and nanomechanics in quasi-brittle materials
… The context of this research is the FPZ in quasi-brittle materials, which is characterized by cracking at various scales. This study focuses on crack propagation and FPZ development at a fundamental material scale: the scale of the grain. With regard to the FPZ, the study seeks to understand how …
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Investigation of modes of thermal fracture of some brittle materials.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1969. Ph.D.
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Experimental and numerical analysis of abrasive waterjet drilling of brittle materials
… interaction between abrasive waterjet (AWJ) and brittle materials, as well as lated machining mechanisms, was studied using a hybrid experimental - numerical analysis approach. First, the machineability of ceramic materials, such as alumina, silicon nitride, silicon carbide, and titanium …
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Failure processes in soft and quasi-brittle materials with nonhomogeneous microstructures
Material failure pervades the fields of materials science and engineering; it occurs at various scales and in various contexts. Understanding the mechanisms by which a material fails can lead to advancements in the way we design and build the world around us. For example, in structural engineering, …
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Three-dimensional modeling of failure in quasi-brittle materials and structures
… conditions, concrete structures present quasi-brittle behavior and failure due to the presence of a nonlinear fracture process zone ahead of the crack front. Predictive models and design methodologies have to be able to reliably calculate the load capacity, or structural strength, of structures …
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Experimental study and analytical modelling of compressive fracture in brittle materials
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
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Leveraging Biomimicry and Additive Manufacturing to Improve Load Transfer in Brittle Materials
… less material, or even using weaker constituent materials, like soils, which are cheap and abundant. The goal of this research is to investigate the benefits of using cellular patterns which leverage biomimicry in civil engineering applications, since nature has perfectly engineered materials and …
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The Behavior in Tension, Torsion, and Flexure of Members Made of Brittle Materials
Made available in DSpace on 2014-12-04T23:11:02Z (GMT). No. of bitstreams: 1 6101595.pdf: 4761404 bytes, checksum: 274df3986b33140a36930b07d39c6c79 (MD5) Previous issue date: 1961
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A fracture mechanics study of the fracture toughness testing techniques applied to brittle materials
… into the application of fracture mechanics to brittle materials, with particular emphasis on the fracture toughness testing techniques used on these materials.
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Micromechanical model for damage and failure of brittle materials : application to polycrystalline ice and concrete
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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The relationship between the crushing strength of brittle materials and the size of cubical specimens tested
… that the value of n should be 0.5 for cracked materials where the length of crack is directly proportional to the edge dimension of the specimen, and zero where the length of crack is independent of the edge dimension of the specimen, in relatively uncracked materials. The Griffith theory is …
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