Convergent debonding of films and fibers

by: MY He, AG Evans, JW Hutchinson

Acta Materialia, Vol. 45, No. 8. (August 1997), pp. 3481-3489.

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Abstract

Debonding of films attached to substrates as well as fibers embedded in matrices typically involves initiation, steady-state propagation and a final transient as the debond converges on an edge or another debond. The emphasis in this paper is on the mechanics of the transient. Under most circumstances, a converging debond crack is characterized by an energy release rate that approaches zero, causing the crack to arrest without attaining full debonding. The relevance of this phenomenon will be discussed with reference to the measurement of toughness for thin film interfaces and the overall stress-strain behavior of ceramic matrix composites.

@article{citeulike:776631, abstract = {Debonding of films attached to substrates as well as fibers embedded in matrices typically involves initiation, steady-state propagation and a final transient as the debond converges on an edge or another debond. The emphasis in this paper is on the mechanics of the transient. Under most circumstances, a converging debond crack is characterized by an energy release rate that approaches zero, causing the crack to arrest without attaining full debonding. The relevance of this phenomenon will be discussed with reference to the measurement of toughness for thin film interfaces and the overall stress-strain behavior of ceramic matrix composites.}, author = {He, M. Y. and Evans, A. G. and Hutchinson, J. W. }, citeulike-article-id = {776631}, doi = {http://dx.doi.org/10.1016/S1359-6454(96)00395-3}, journal = {Acta Materialia}, keywords = {debond, interface}, month = {August}, number = {8}, pages = {3481--3489}, posted-at = {2006-07-27 20:50:36}, priority = {2}, title = {Convergent debonding of films and fibers}, url = {http://dx.doi.org/10.1016/S1359-6454(96)00395-3}, volume = {45}, year = {1997} }

RIS record

TY - JOUR ID - citeulike:776631 L3 - citeulike-article-id:776631 N2 - Debonding of films attached to substrates as well as fibers embedded in matrices typically involves initiation, steady-state propagation and a final transient as the debond converges on an edge or another debond. The emphasis in this paper is on the mechanics of the transient. Under most circumstances, a converging debond crack is characterized by an energy release rate that approaches zero, causing the crack to arrest without attaining full debonding. The relevance of this phenomenon will be discussed with reference to the measurement of toughness for thin film interfaces and the overall stress-strain behavior of ceramic matrix composites. IS - 8 JF - Acta Materialia EP - 3489 TI - Convergent debonding of films and fibers VL - 45 SP - 3481 KW - debond KW - interface AU - He, MY AU - Evans, AG AU - Hutchinson, JW PY - 1997/08// UR - http://dx.doi.org/10.1016/S1359-6454(96)00395-3 ER -

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