STP1156

    Matrix Cracking-Induced Delamination Propagation in Graphite/Epoxy Laminated Composites Due to a Transverse Concentrated Load

    Published: Jan 1993


      Format Pages Price  
    PDF (340K) 16 $25   ADD TO CART
    Complete Source PDF (18M) 16 $147   ADD TO CART


    Abstract

    An investigation was performed to study the delamination propagation induced by matrix cracking in graphite/epoxy laminated composite beams subjected to transverse concentrated loading. The major focus of the study was to fundamentally understand the interaction between matrix cracking and delamination propagation in laminated composites resulting from transverse loadings. A nonlinear finite element analysis combined with a failure criterion and fracture mechanics was developed for modeling the damage initiation and propagation in composite beams subjected to a concentrated line load. A contact analysis based on the Lagrange multiplier technique was also adopted for modeling the contactslip condition of delamination and matrix crack surfaces during loading. Results of the calculations based on the analysis were compared favorably with the existing data and the data generated during the investigation.

    Keywords:

    delamination, matrix cracking, stable and unstable crack propagation, laminated composites, transverse loading


    Author Information:

    Liu, S
    Graduate student, post-doctoral student, and associate professor, Stanford University, Stanford, CA

    Kutlu, Z
    Graduate student, post-doctoral student, and associate professor, Stanford University, Stanford, CA

    Chang, F-K
    Graduate student, post-doctoral student, and associate professor, Stanford University, Stanford, CA


    Paper ID: STP24726S

    Committee/Subcommittee: D30.05

    DOI: 10.1520/STP24726S


    CrossRef ASTM International is a member of CrossRef.