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Showing 1 to 20 of 282 for “"crack propagation"”.
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Crack propagation in isotropic materials
This thesis presents a numerical study of crack propagation in brittle materials. The finite element method using constant strain triangular elements was used. The experimental investigation is based on Gurney and Hunt's quasi-static method of fracture testing.<br/><br/>The applicability of the …
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Fatigue crack propagation in functionally graded materials
Propagation of cracks in functionally graded materials (FGMs) under cyclic loading was investigated via experiments and finite element (FE) analysis. Alumina-epoxy composites with an interpenetrating-network structure and tailored spatial variation in composition were produced via a multi-step …
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Mixed-Mode Crack Propagation in Functionally Graded Materials
The fracture parameters describing the crack tip fields in functionally graded materials (FGMs) include stress intensity factors (SIFs) and T-stress (non-singular stress). These two fracture parameters are important for determining the behavior of a crack under mixed-mode loading conditions in …
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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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Surface traction and crack propagation in delamination wear
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.
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Crack Propagation in Low-Cycle Fatigue of Mild Steel
Made available in DSpace on 2014-12-05T17:37:29Z (GMT). No. of bitstreams: 1 6202961.pdf: 2896554 bytes, checksum: aa2f0b1a537291dfad78503b4a5c3d1a (MD5) Previous issue date: 1962
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Innovative practical crack propagation measurement of asphalt concrete specimens
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Rayleigh Wave Acoustic Emission during Crack Propagation in Steel
… the existence of seismic surface pulses (SSP) on crack faces in near-failure fatigue. An SSP has components of various modes of wave propagation. The component with the largest amplitude is a Rayleigh surface wave pulse. The possibility that these surface modes have much higher amplitudes than …
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Solutions of some elastodynamic problems with application to crack propagation
… that will be applicable to the investigation of crack growth and to non-destructive evaluation. A number of problems of dynamic crack propagation in brittle solids are solved by applying the Smirnov and Sobolev method of self-similar potentials and extending the method in several ways. The method …
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Fatigue crack propagation along polymer-metal interfaces in microelectronic packages
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Sensitivity Analysis of Interface Fatigue Crack Propagation in Elastic Composite Laminates
… the sensitivity analysis of interface fatigue crack propagation in elastic composite laminates. The second goal of this work was the numerical determination and investigation of displacement and stress fields near the crack tip, contact pressures along crack surfaces, mixed mode angle, energy …
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Quantitative phase-field modeling of crack propagation in multi-phase materials
… a computational framework for study of crack propagation in polycrystalline composite ceramics capable of designing micro-architectures of phases to improve fracture toughness and damage tolerance of ZrB<sub>2</sub>-based ultra-high temperature ceramics (UHTCs). A quantitative …
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Photoelastic stress analysis of crack propagation within a compressive stress field
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1963.
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A critical analysis of fatigue-crack propagation data for 2024-T3 aluminum.
Fatigue-crack growth data for 2024-T3 aluminum was used to evaluate the accuracy of Forman's equation. Forman's equation was found to predict from one-third to twice the observed cycles to a given crack length when applied to multiple cyclic stress ratios. An alternative approach was developed, …
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Adaptive finite element simulation of fracture: from plastic deformation to crack propagation
As engineers and scientists, we have a host of reasons to understand how structural systems fail. We may be able to improve the safety of buildings during natural disaster by designing more fracture resistant connectors, to lengthen the life span on industrial machinery by designing it to sustain …
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The influence of inclusion content on fatigue crack propagation in aluminum alloys.
Thesis: M.S., Massachusetts Institute of Technology, Department of Metallurgy and Materials Science, 1972
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Numerical Simulation of Adiabatic Shear Bands and Crack Propagation in Thermoviscoplastic Materials
… stress intensity factor (SIF) in a double edge-cracked plate. Deformations of the plate are studied both with and without exploiting the symmetry conditions. The penalty method is used to enforce the essential boundary condition in the former case. When analyzing the deformations of the entire …
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A comparison of fatigue crack propagation in Inconel 625 and 3.25 Ni steel.
Massachusetts Institute of Technology. Dept. of Ocean Engineering. Thesis. 1972. Ocean E.
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Linear elastic fracture mechanics in anisotropic solids : application to fluid-driven crack propagation
… mechanics with the objective to predict how cracks initiate and propagate in solids. It has a wide domain of application. While aerospace engineers want to make sure a defect in a structure will not grow and possibly lead to failure, petroleum engineers try to increase the permeability of gas …
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