Time-Dependent Behavior of a Graphite/Thermoplastic Composite and the Effects of Stress and Physical Aging | Zendy

WS Johnson | Zendy; JE Masters | Zendy; TS Gates | Zendy; Mark Feldman | Zendy

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Time-Dependent Behavior of a Graphite/Thermoplastic Composite and the Effects of Stress and Physical Aging

Author(s) -

WS Johnson,

JE Masters,

TS Gates,

Mark Feldman

Publication year - 1995

Publication title -

journal of composites technology and research

Language(s) - English

Resource type - Journals

eISSN - 1945-7537

pISSN - 0884-6804

DOI - 10.1520/ctr10511j

Subject(s) - materials science , creep , composite material , orthotropic material , composite number , isothermal process , ultimate tensile strength , stress (linguistics) , structural engineering , thermodynamics , engineering , finite element method , linguistics , philosophy , physics

Experimental studies were performed to determine the effects of stress and physical aging on the matrix dominated time- dependent properties of IM7/8320 composite. Isothermal tensile creep/ aging test techniques developed for polymers were adapted for testing of the composite material. Time-dependent transverse ($22) and shear ($66) compliance's for an orthotropic plate were found from short- term creep compliance measurements at constant, sub-T_ temperatures. These compliance terms were shown to be affected by physical aging. Aging time shift factors and shift rates were found to be a function of temperature and applied stress.

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