THERMALLY-INDUCED INTERLAMINAR CRACK-TIP SINGULARITIES IN LAMINATED ANISOTROPIC COMPOSITES

Citation
Hj. Choi et al., THERMALLY-INDUCED INTERLAMINAR CRACK-TIP SINGULARITIES IN LAMINATED ANISOTROPIC COMPOSITES, International journal of fracture, 60(4), 1993, pp. 327-347
Citations number
33
Categorie Soggetti
Mechanics
ISSN journal
03769429
Volume
60
Issue
4
Year of publication
1993
Pages
327 - 347
Database
ISI
SICI code
0376-9429(1993)60:4<327:TICSIL>2.0.ZU;2-B
Abstract
Thermally-induced stress singularities of an interlaminar crack in a f iber-reinforced composite laminate under a state of generalized Plane deformation are examined within the framework of steady-state anisotro pic thermoelasticity The crack is assumed to be embedded within a matr ix-rich interlaminar region of the composite. The Fourier integral tra nsform technique and the flexibility/stiffness matrix method are intro duced to formulate the current mixed boundary value problem. As a resu lt, two sets of simultaneous Cauchy-type singular integral equations o f the first kind are derived for the heat conduction and thermoelastic ity. Within the context of linear elastic fracture mechanics, the mixe d-mode thermal stress intensity factors are defined in terms of the so lutions of the corresponding integral equations. Numerical results are presented, addressing the effects of laminate stacking sequence, crac k location, and crack surface partial insulation on the values of ther mal stress intensity factors.