Dynamic Characterization of Textile Composites Part II: Bi-axial Tension
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Part II of this two part paper is concerned with the need to understand the multiaxial response of textile composite materials as compared to the uniaxial response seen in part I. In this paper, a test methodology is introduced to create a a dynamic multiaxial stress state on composite plates. Shock loading of plain woven textile composite materials is studied using a novel technique to induce damage initiation at the crown of the sample, where a biaixal state of stress is present. Both fiberglass and carbon fiber materials are tested at different shock strengths to understand if the failure mode changes at increased shock strengths. The results show the influence of both rate and the multiaxial stress state on the failure strains.
KeywordsComposite Multiaxial Dynamic Shock tube Rate dependent
The authors would like to thank the Army Research Laboratories, Aberdeen proving ground, for their continued financial support.
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