R. M. McMeeking  M. R. Begley  B. N. Cox      

Anales de la Mecánica de la Fractura, nº 13 . 1996 . Pág. 30 -38
Ver (.pdf): Anales13-004

Resumen: A model for crack growth in ceramic matrix composites with creeping fibers has been developed using a time dependent bridging law to account for the effect of fibers bridging a matrix crack. Time dependent crack growth was predicted when the matrix crack growth occurs at a critical stress intensity factor at the matrix crack tip. Crack growth rates are presented as a function of crack length and time. After the crack has grown completely across a laminate, life is controlled by the time to rupture exposed creeping fibers. A transition is expected from life dominated by matrix crack growth at low stress to life dominated by fiber creep rupture after crack growth at higher stress.

Localización: Luso, Portugal

Mechanical and Environmental Engineering Department. University of California, Santa Barbara, California 93106, U. S. A
Division of Applied Sciences, Harvard University. Cambridge, Massachusetts 02138, U. S. A.
Rockwell Science Center, 1049 Camino Dos Rios, Thousand Oaks, California 91360, U. S. A.