Micromechanical Characterization of Nonlinear Behavior of Advanced Polymer Matrix Composites | Zendy

TS Gates | Zendy; J-L Chen | Zendy; CT Sun | Zendy

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Micromechanical Characterization of Nonlinear Behavior of Advanced Polymer Matrix Composites

Author(s) -

TS Gates,

J-L Chen,

CT Sun

Publication year - 1996

Publication title -

nasa technical reports server (nasa)

Language(s) - English

Resource type - Book series

DOI - 10.1520/stp16551s

Subject(s) - materials science , composite material , characterization (materials science) , nonlinear system , matrix (chemical analysis) , micromechanics , composite number , nanotechnology , physics , quantum mechanics

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 advance 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.

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