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Showing 1 to 20 of 110 for “"Fracture behavior"”.
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Fracture Behavior of Masonry Bond
The applied fracture mechanics model, when both elastic and inelastic deformations were considered, always over-estimated the post-peak behavior. However, the post-peak behavior was successfully predicted when the model was modified to consider only elastic deformation. The analysis indicated that …
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Fracture behavior of CPM 10V
… effect of three heat treatments on plane-strain fracture toughness (K <sub>Ic</sub>), fatigue crack growth rate (da/dN), and tensile behavior of a commercial powder metal alloy, CPM 10V, was investigated. Fracture toughness was increased by increasing the tempering temperatures and decreased by …
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Fatigue and Fracture Behavior of Graphene-based Nanomaterials
… graphene suffers from an intrinsically brittle behavior and an interfacially weak interaction in contact with adjacent constituents. The present thesis studies both issues under static and cyclic loads. Initially, atomistic simulations were performed to understand the underlying mechanisms and …
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Fracture behavior of mortar-aggregate interfaces in concrete
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Investigation of the fracture behavior of niobium-alumina composites
Includes bibliographical references (pages 72-77).
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Mechanics and Fracture Behavior of Thermomechanical Bonds in Nonwoven Fabric
The market for nonwoven fabrics has experienced extreme growth in recent years and is expected to double in size from 2010 to 2020. This remarkable growth can be attributed to its numerous applications, ease of manufacturing, and customizable properties such as fabric stiffness, extensibility, and …
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Molecular Dynamics Investigation on the Fracture Behavior of Nanocrystalline Fe
… a combination of intragranular and intergranular fracture is observed. Mechanisms such as grain boundary accommodation, grain boundary triple junction, grain nucleation and grain rotation are observed to dictate the plastic deformation energy release. Intergranular fracture is shown to proceed by …
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The influence of high performance matrices on fracture behavior of concrete
… strength of concrete, but its contributions to fracture behavior remains unclear. In this study, the influence of replacing cement by silica fume and fly ash on the cement matrix-coarse aggregate interfacial bond, compressive stress-strain behavior and fracture behavior of concrete is …
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Microstructure development and fracture behavior of plate steels containing ultrafine ferrite
Includes bibliographical references (pages 163-168).
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Effects of stress state on fracture behavior of high carbon steel
Includes bibliographical references (pages 128-131).
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The Fracture Behavior and Mechanical Performance of Biodegradable Cornstarch Plastic Composites
… total energy-to-break to the roughness of the fracture surfaces obtained by three-dimensional reconstruction revealed a relatively positive correlation, meaning that as the fracture surfaces appear rougher and more characteristically like ductile fractures, the stronger, more ductile and …
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The effect of zero point charge environment on rock fracture behavior
… of zero point of charge (ZPC) environment on fracture behavior of rocks. The material parameters selected for this purpose were fracture toughness and specific work of fracture. These properties were determined for three rock types in five environments. Semi-circular bend specimens of …
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Effect of temperature on the fracture behavior of lead-free solder joints
… is to examine the effect of temperature on the fracture behavior of Cu-SAC305-Cu joints. To this end, double cantilever beam (DCB) specimens, consisting of a thin layer of Sn96.5Ag3.0Cu0.5 (SAC305) solder sandwiched between two copper bars, fabricated under standard surface mount (SMT) …
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Micromechanical modelling of the fracture behavior of second-phase reinforced cementitious materials
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil Engineering, 1990
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Fracture Behavior Characterization of Conventional and High Performance Steel for Bridge Applications
The work described herein examines the fracture behavior of steels used in bridge applications. As part of Transportation Pooled Fund (TPF) Project 5-238, Design and Fabrication Standards to Eliminate Fracture Critical Concerns in Steel Members Traditionally Classified as Fracture Critical, …
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Deformation and fracture behavior during annealing of residually stressed polycrystalline aluminum oxide
… were tempered and then annealed to study the behavior of residual stress relaxation. Results from microprobe analysis, thermal expansion analysis, annealed strength measurements, and scanning electron fractography clearly indicate stress relaxation at annealing temperatures occurred by elastic …
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Elastic properties and fracture behavior of graphite/polyimide composites at extreme temperatures
… cryogenic temperatures on the elastic moduli and fracture strengths of several Celion-6000/PMR-15 laminates was measured. Tests were run at -157,24 (room temperature), and 316°C (-250, 75, and 600°F). Both unnotched and notched laminates were tested. Several failure criteria, developed to predict …
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The Influence of Reinforcement Architecture on the Fracture Behavior of Selectively Reinforced Materials
… of the effect of reinforcement architectures on fracture response of aluminum compact-tension (CT) specimens was performed using the finite element code ABAQUS. A three-dimensional crack propagation procedure based on the crack tip opening angle (CTOA) was developed using Python. Eleven different …
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A characterization of the fracture behavior of thick, notched, laminated graphite/epoxy composites
The effect of laminate thickness on the fracture behavior of laminated graphite/epoxy (T300/5208) composites has been studied. The predominantly experimental research program included the study of the [0/±45/90]<sub>ns</sub> and [0/90]<sub>ns</sub> laminates with thicknesses of 8, 32, 64, 96 and …
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