Dynamic testing of fibre polymer matrix composite plates under in-plane compression

Abstract : Experimental investigations of the failure strength of fibre reinforced polymer matrix composite plates under compressive impact loading is presented in this paper. A split Hopkinson pressure bar (SHPB) is used to measure these properties. The specimen being a plate, its cross-sectional area is small compared with the area of the bars and the failure strength is weak. One has to then use low impedance bars made of a viscoelastic material. Subsequent experimental problems, such as dispersion corrections in viscoelastic bars, are analysed. One also has to use a special anti-buckling device to prevent the overall buckling of the specimen. It is shown that the presented SHPB system provides a precise measurement of forces and displacements at both ends of the specimen. A special attention is then given to the analysis of the test, especially in situations where a non-homogeneous state of stress in the specimen in observed.
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Gérard Gary, H. Zhao. Dynamic testing of fibre polymer matrix composite plates under in-plane compression. Composites Part A: Applied Science and Manufacturing, Elsevier, 2000, 31, pp.835-840. ⟨10.1016/S1359-835X(00)00026-9⟩. ⟨hal-00111310⟩



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