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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 20 of 858 for “"brittle"”.
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Brittle fracture
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1960.
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Brittle Fracture in Oceanic Basalts
Basalt samples dredged from the ocean floor were experimentally fractured in tension while being observed microscopically. Five basaltic textural types were chosen: (1) cotectic crystallization of olivine, plagioclase, and pyroxene Juan de Fuca, (2) dark glass matrix with phenocrysts of …
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Brittle fracture in welded plate specimens
Includes bibliographical references (pages 43-44).
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Multiscale hybrid simulation of brittle fracture
When a brittle material is loaded to the limit of its strength, it fails by nucleation and propagation of a crack. The conditions for crack propagation are created by the concentration of a long-range stress field at an atomically sharp crack tip, creating a complex and strongly coupled multiscale …
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Mechanical behavior of four brittle polymers
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Microstructure design of porous brittle materials
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Computational modeling of brittle impact erosion mechanisms
… for various angles of attack is that of typical brittle erosion. The volume loss has three different ranges with increase in velocity. And also two simultaneous adjacent impact results in volume loss as that of two isolated impacts.
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The Ductile to Brittle Transition in Polycarbonate
… in order to simulate the ductile to brittle failure transition in polycarbonate. The cohesive zone model is motivated by experimental evidence that two different critical energies per unit area of crack growth exist in glassy polymers. A higher energy state is associated with ductile …
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The brittle and plastic response of quartz.
Quartz is the principal mineral constituent of the earth's upper crust and a knowledge of the deformation characteristics of quartz are of geological and technological importance. In common with many ceramic materials, quartz may not satisfy the Von Mises independent slip system criterion and …
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The effect of inclusions in brittle material
… investigates the cracking behavior of brittle heterogeneous materials. Unconfined, uniaxial compression tests are conducted on prismatic gypsum specimens containing either one, or two, inclusions. These inclusions are of different strengths, stiffnesses, shapes, and sizes. Real-time …
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Crack growth during brittle fracture in compression.
Massachusetts Institute of Technology. Dept. of Geology and Geophysics. Thesis. 1965. Ph.D.
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Aspects of faulting and fracturing in brittle lithologies
This thesis focuses on aspects of brittle deformation in cohesive lithologies. The pursued concept involves multiscale observations carried out on case studies ranging from satellite images and field outcrops down to the scale of microstructural work to describe and isolate feedback characteristics …
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Studies on the Brittle -Ductile Transition in Silicon
After a specimen geometry that ensures straight crack growth was found for the experiment described above, research on crack turning was continued. As a hot glass plate is dipped into cool water, a pre-crack may grow along many different paths depending upon the testing parameters. In silicon the …
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Brittle Behavior and Crack Propagation in Asphaltic Mixtures
Made available in DSpace on 2014-12-08T23:56:57Z (GMT). No. of bitstreams: 1 6808019.pdf: 4885242 bytes, checksum: cf7da6dcdd072785f1fb1d45f19c2659 (MD5) Previous issue date: 1967
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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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A gradient-damage theory for quasi brittle fracture
Phase-field modeling of brittle fracture of linear elastic solids has been the subject of several studies in the past 25 years. An attractive feature of this approach to model fracture is its seamless ability to simulate the complicated fracture processes of nucleation, propagation, branching and …
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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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