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The mechanical response of an eight harness satin (8HS) woven T650-35/PMR-15 composite to aging in nitrogen at 315°C for up to 1000h has been investigated both experimentally and numerically. The aging stresses in the composite were numerically predicted on a meso-scale using the concept of a unit-cell. Viscoelastic, age stiffening, and volumetric shrinkage effects were considered in the simulations...
In this work, the effect of two types of in-plane shear dominated loads on the initiation of intralaminar damage has been evaluated in an 8-harness satin (8HS) T650-35/PMR-15 (graphite/polyimide) composite tested at room and elevated temperatures. The composite was subjected to either pure in-plane shear or combined biaxial tension and shear, which represented the stress conditions in the gage sections...
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