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Kinetic Laws of Damage Evolution
1992The physical nature of damage has been defined in the first chapter. The definition of the damage variable as the effective surface density of microcracks in a Representative Volume Element associated with the effective stress concept and the principle of equivalence has given rise to methods of damage measurement through changes in elasticity or ...
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A statistical equation of damage evolution
Engineering Fracture Mechanics, 1995Abstract A statistical damage theory is developed from the combination of Continuum Damage Mechanics (CDM), nonequilibrium statistical physics and fracture mechanics. The evolution process of microdefects, which is stochastic in nature due to the inhomogeneous microstructure of materials, is considered as the elementary process of damage to material ...
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Damage Evolution in Filled Elastomers
1991Abstract : This report summarizes accomplishments on the development of mathematical models of distributed microcracking in filled elastomers, such as solid propellant, and in other linear and nonlinear viscoelastic composite materials. The work is divided into two parts. The first part is concerned with elastic composites while the second part extends
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Analysis of Shear Damage Evolution
International Journal of Damage Mechanics, 1998Shear damage development under constant stress is studied on the basis of the analytical solution of kinetic equations of damage accumulation. The existence of two threshold stresses is linked with the presence of three various stress intervals and respective regimes of damage growth.
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Damage Evolution and Failure Modes
1995A polycrystalline solid is said to deform in a ductile (or plastic) mode if “the material flows through the crystal via dislocation motion,..., whereas the lattice itself, with the material embedded on it, undergoes elastic deformation and rotation” [1].
D. Krajcinovic, S. Mastilovic
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Oxygen Deficiency and Brain Damage: Localization, Evolution in Time, and Mechanisms of Damage
Journal of Toxicology: Clinical Toxicology, 1985Observations on some patients with CO intoxication have revealed a delayed type of brain injury, with symptoms appearing days after the initial insult. Possible mechanisms are discussed, with reference to recent experimental results on ischemic brain damage.
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Investigating the damage evolution of sandstone using electrical impedance spectroscopy
International Journal of Rock Mechanics and Minings Sciences, 2021Qianjun Xu
exaly
Inelastic Constitutive Equation and Damage Evolution Equation of Material with Anisotropic Damage
2011The thermodynamic constitutive theory described in the preceding chapter is applied to inelastic materials with isotropic damage. In Section 4.1, one-dimensional elastic-plastic and elastic-viscoplastic constitutive equations of damaged materials will be described as the basis for the succeeding sections.
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