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A THERMOELASTICITY THEORY FOR DAMAGE IN ANISOTROPIC MATERIALS
Author(s) -
Zhang Daqing,
Sandor Bela I.
Publication year - 1990
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1990.tb00620.x
Subject(s) - extensometer , materials science , anisotropy , epoxy , composite material , modulus , moduli , elastic modulus , stress (linguistics) , structural engineering , optics , physics , engineering , linguistics , philosophy , quantum mechanics
A thermoelasticity theory for damage in anisotropic materials is developed. This theory can be applied to evaluate the damage parameter D , the normalized effective mess density ρ e /ρ, and the effective modulus E e quantitatively in some metals and composites by incorporating the thermographic stress analysis method (TSA; also, SPATE method). The effective moduli due to fatigue damage and static loads in a glass fiber/epoxy laminate obtained by the TSA method are compared with the values measured by an extensometer. The correlation between the measurements using the two methods is very good.