Hj. Choi et al., THERMALLY-INDUCED INTERLAMINAR CRACK-TIP SINGULARITIES IN LAMINATED ANISOTROPIC COMPOSITES, International journal of fracture, 60(4), 1993, pp. 327-347
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.