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Energy release rates of degrading composite structures
19th AIAA Applied Aerodynamics Conference, 2001Energy release rates during progressive damage and fracture of laminated composite structures subjected to loading are evaluated via computational simulation. A computer model is utilized for the assessment of structural response, progressive fracture, and defect/damage tolerance characteristics.
Levon Minnetyan, Christos Chamis
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Energy release rate along a kinked path
Mathematical Methods in the Applied Sciences, 2010Summary: Considering anti-plane elasticity we provide an existence result for the energy release rate along a piecewise \(C^{1, 1}\) path that admits a kink. We provide two representations: an asymptotic one in terms of the stress intensity factor and an integral one in terms of the Eshelby tensor. Both the formulas make use of an implicit coefficient,
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Energy release rates in patched cracked plates
Engineering Fracture Mechanics, 1988The fatigue and fracture performance of a cracked plate can be significantly improved by reinforcing it with high modulus composite material. The reduction in valid fracture mechanics parameters like energy release rate (G) or stress intensity factor (SIF) is measure of effectiveness of the reinforcement.
Ramesh Chandra +2 more
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Strain energy release rates for turning cracks
Composites, 1972Abstract The ratio of strain energy release rates for propagation of a crack in its own plane and perpendicular to it has an important effect on the direction of propagation. This ratio is a function only of the relative values of the elastic constants of the material, and the mode of stressing of the crack. The ratio is determined by an experimental
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Energy release rates in fire retardant evaluation
Fire Technology, 1970Rate of spread and other indirect measurements of fire intensity are often used as measures of flammability when fire-retardant chemicals are evaluated under laboratory conditions. The authors describe a system for obtaining the energy release rate directly and show its importance and relation to retardant effectiveness.
Charles W. George, Aylmer D. Blakely
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Fracture energy release rate in nylon fibers
Journal of Applied Polymer Science, 1998The effect of relative humidity on the fracture energy release rate, G Ic , for single nylon 6,6 fibers has been determined previously. In this article, it is shown that G Ic is independent of relative humidity for moisture contents of > 2.3% once the plastic zone correction is made.
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Energy Release Rate Criteria for Piezoelectric Solids
2003Criteria for crack propagation are fundamentally important in the study of fracture mechanics. Stress-based criteria and energy-based criteria result in quite similar fracture predictions for isotropic elastic materials. However, this is not the case for anisotropic materials.
R. K. N. D. Rajapakse, S. X. Xu
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Rate capability and Ragone plots for phase change thermal energy storage
Nature Energy, 2021Jason Woods, Allison Mahvi, Anurag Goyal
exaly