STP1274

    Micromechanical Characterization of Nonlinear Behavior of Advanced Polymer Matrix Composites

    Published: Jan 1996


      Format Pages Price  
    PDF Version (484K) 25 $25   ADD TO CART
    Complete Source PDF (12M) 25 $142   ADD TO CART


    Abstract

    Due to the presence of curing stresses and oriented crystalline structures in the matrix of polymer matrix fiber composites, the in situ nonlinear properties of the matrix are expected to be rather different from those of the bulk resin. A plane-stress micromechanical model was developed to retrieve the in situ elastic-plastic properties of Narmco 5260 and Amoco 8320 matrices from measured elastic-plastic properties of IM7/5260 and IM7/8320 advanced composites. In the micromechanical model, the fiber was assumed to be orthotropically elastic and the matrix to be orthotropic in elastic and plastic properties. The results indicate that both in situ elastic and plastic properties of the matrices are orthotropic.

    Keywords:

    micromechanics, polymer matrix composites, temperature, plasticity, off-axis testing, composite materials, testing, design


    Author Information:

    Gates, TS
    Research scientist, NASA Langley Research Center, Hampton, VA

    Chen, J-L
    Research associate and professor, School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN

    Sun, CT
    Research associate and professor, School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN


    Paper ID: STP16551S

    Committee/Subcommittee: D30.07

    DOI: 10.1520/STP16551S


    CrossRef ASTM International is a member of CrossRef.