Results 171 to 180 of about 1,222,645 (212)

Thermodynamics Theory for Damage Evolution in Solids

2014
In this chapter the thermodynamic theory behind damage mechanics is presented. The presented damage evolution model is purely physical, rather than empirical. Entropy production rate is used as a damage metric.
Basaran, Cemal, Nie, Shihua, Gomez, J., Gunel, Eray, Shidong Li, Minghui Lin, Hong Tang, Chengyong Yan, Wei Yao, Hua Ye   +9 more
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Damage Evolution and Damage Surface of Elastic-Plastic-Damage Materials under Multiaxial Loading

International Journal of Damage Mechanics, 1998
Damage evolution and fundamental aspects of damage surface of a spheroidized graphite cast iron are observed. This paper is intended to discuss the applicability of the irreversible thermodynamics theory to the modeling of elastic-plastic-damage materials.
S. Murakami, K. Hayakawa, Y. Liu
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Kinetic Laws of Damage Evolution

1992
The 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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Damage Evolution and Failure Modes

1995
A 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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Fatigue damage evolution in 3D textile composites

2015
The broad range of applications of 3D textile reinforced composites requires an in-depth knowledge of their mechanical properties. Among those, the fatigue behaviour receives high demand in several industrial applications. In this chapter some experimental investigations are summarized to assess the influence of the three-dimensional architecture of ...
CARVELLI, VALTER, Lomov, S. V.
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Surface damage evolution of engineering steel

Fatigue & Fracture of Engineering Materials & Structures, 2008
ABSTRACTThe surface damage evolution of ordinary low carbon steel under mechanical fatigue loading was observed using a long‐distance microscope. Fatigue cracks initiated at pits, sulfide inclusions and in the soft ferrite phase. Damage evolution was not only pronounced by the initiation of well‐defined cracks.
M. BESEL, A. BRUECKNER‐FOIT
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Damage Evolution in Filled Elastomers

1991
Abstract : 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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Damage evolution

2023
George Z. Voyiadjis, Peter I. Kattan
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Evolution of fatigue damage using the fatigue damage map method

Theoretical and Applied Fracture Mechanics, 2006
Using only readily available material properties and the concept of the fatigue damage map the work attends to develop a methodology able to predict crack tip propagation rates characterising each of the fatigue stages, namely crack arrest, microstructurally and physically short crack (Stage I), long crack growth (Stage II) and Stage III growth.
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Stochastic Damage Evolution Modeling in Laminates

Journal of Thermoplastic Composite Materials, 1996
A stochastic mesomechanics model has been developed for damage accu mulation analysis in advanced laminated composites. The model is based on a theory of excursions of random process beyond the bounds. Stochastic strains in the laminate sub jected to random Gaussian inplane loading are calculated using lamination theory and random functions theory ...
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