@inproceedings{c9fcb20cb4e446b0bff58d64d1eb9f9f,

title = "Matrix cracking in transversely loaded fiber composites with compliant interphases",

abstract = "Some preliminary results are presented from a study on the effect of interphases on the transverse strength of unidirectional fiber-reinforced composites. It is assumed that a thin reaction zone (intermolecular bonding at the fiber/matrix interface) defines the bond between the fibers and the matrix. A variationally coupled finite element - boundary element method is employed to obtain the mechanical response of a hexagonal unit cell which contains a center fiber and parts of surrounding fibers. For a given interfacial stiffness, the unit cell is loaded until a critical value of the circumferential stress component in the matrix just outside the interface is reached. Under the same applied load, the problem is then solved with a radial matrix crack of a given length at the critical location. The mixed mode stress intensity factors are extracted by evaluating interaction integrals over a finite element domain surrounding the crack tip, and the direction of crack propagation is predicted by a maximum principal stress criterion. The circumferential stress distributions in the matrix just outside the interfaces are then examined to determine future crack nucleation sites.",

author = "M. Gosz and B. Moran and Achenbach, {J. D.}",

year = "1992",

language = "English (US)",

isbn = "0791811085",

series = "American Society of Mechanical Engineers, Applied Mechanics Division, AMD",

publisher = "Publ by ASME",

pages = "133--140",

booktitle = "Damage Mechanics in Composites",

note = "Winter Annual Meeting of the American Society of Mechanical Engineers ; Conference date: 08-11-1992 Through 13-11-1992",

}