STP1315

    Damage, Fatigue, and Failure of Ceramic-Matrix Composites

    Published: Jan 1997


      Format Pages Price  
    PDF (256K) 14 $25   ADD TO CART
    Complete Source PDF (4.6M) 14 $125   ADD TO CART


    Abstract

    Matrix cracking, interfacial debonding and sliding, fiber breakage and fiber pullout induced loss of stiffness, inelastic strains, hysteresis loops, and crack closure. These mechanisms are analyzed within the framework of continuum mechanics through the introduction of internal variables. Two models that are faithful to the micromechanical analysis are studied. They provide guidance on the choice of the relevant internal variables to describe the mechanical behavior of unidirectional fiber-reinforced composites. Ultimate strength properties of fiber-reinforced composites are derived and compared with results related to localization. Extensions to cyclic load histories are discussed in terms of ultimate strength reached after cycling.

    Keywords:

    matrix cracking, debonding, fiber breakage, interfacial shear strength, interfacial wear, ultimate strength, continuum damage mechanics, state potential, internal variables, fatigue failure maps, fatigue (materials), fracture (materials)


    Author Information:

    Burr, A
    Post-graduate researcher and research associate professor, Laboratoire de Mécanique et Technologie, ENS de Cachan/CNRS/Université Paris 6, Cachan,

    Hild, F
    Post-graduate researcher and research associate professor, Laboratoire de Mécanique et Technologie, ENS de Cachan/CNRS/Université Paris 6, Cachan,

    Leckie, FA
    Professor, College of Engineering, University of California, Santa Barbara, CA


    Paper ID: STP11878S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP11878S


    CrossRef ASTM International is a member of CrossRef.