Abstract
A critical review of behavior of polymer matrix composites under high strain rate shear loading is presented. A brief review of experimental methods used to investigate the dynamic shear properties of composites are included. Experimental results obtained by various researchers for high strain rate shear properties of polymer matrix composites are discussed and compared for both unidirectional and woven fabric composites. The effect of strain rate on the in-plane and interlaminar shear properties is summarized by giving a property change factor, the ratio of the value at high strain rate compared with the value at quasi-static loading. Possible damage mechanisms and modes are also discussed. For unidirectional composites the property change factor for in-plane shear strength and shear modulus ranges between 1.26 and 1.82 and 0.39–1.25 respectively and for interlaminar shear strength and modulus ranges between 0.71 and 1.47 and 0.87–0.98 respectively. On the other hand, for woven fabric composites the property change factor for in-plane shear strength and shear modulus ranges between 0.79 and 1.75 and 0.12–1.75 respectively and for interlaminar shear strength and modulus ranges between 1.55 and 1.70 and 1.24–1.33 respectively.
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