Publication detail
Estimation of the critical stress for failure of layered composite materials
NÁHLÍK, L. ŠESTÁKOVÁ, L. HUTAŘ, P. KNÉSL, Z.
Czech title
Odhad kritického napětí pro porušení vrstevnatých kompozitních materiálů
English title
Estimation of the critical stress for failure of layered composite materials
Type
abstract
Language
en
Original abstract
The contribution describes a study of the behaviour of a crack growing in a layered composite material and penetrating through an interface from one layer into a second one. Special attention is devoted to a crack touching the interface. Conditions for the stability of a crack terminating at the interface between two materials are analyzed. The problem is studied under the assumptions of linear-elastic fracture mechanics. A new tentative criterion of stability based on application of the strain energy density concept is formulated and applied to the problem. The criterion of stability formulated is based on application of the strain energy density concept as originally formulated by Sih for cracks in homogeneous materials.
Czech abstract
Příspěvek zahrnuje studii chování trhliny rostoucí ve vrstevnatém kompositním materiálů a procházejícím přes rozhraní z jedné vrstvy do druhé. Speciální pozornost je věnována případu trhliny s vrcholem na rozhraní. Jsou analyzovány podmínky stability trhliny končící na rozhraní mezi dvěma elastickými materiály. Je použito kritérium založené na hodnotě faktoru hustoty deformační energie, původně odvozené Sihem.
English abstract
The contribution describes a study of the behaviour of a crack growing in a layered composite material and penetrating through an interface from one layer into a second one. Special attention is devoted to a crack touching the interface. Conditions for the stability of a crack terminating at the interface between two materials are analyzed. The problem is studied under the assumptions of linear-elastic fracture mechanics. A new tentative criterion of stability based on application of the strain energy density concept is formulated and applied to the problem. The criterion of stability formulated is based on application of the strain energy density concept as originally formulated by Sih for cracks in homogeneous materials.
Keywords in Czech
rozhraní, vrstevnaté materiály, stabilita trhliny, kritické napětí, keramické kompozity
Keywords in English
interface, layered materials, crack stability, critical stress, ceramic composites
Released
07.10.2008
Publisher
Beijing Institute of Technology
Location
Beijing, China
Book
IWCMM18
Pages from–to
103–103
Pages count
1