期刊
POLYMER TESTING
卷 29, 期 1, 页码 14-22出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2009.08.010
关键词
Composite materials; Through the thickness tensile strength; In-plane tensile strength; Strain rate effect
High strain rate tensile behavior is presented along thickness, warp and fill directions for a typical plain weave fabric E-glass/epoxy composite. Studies were carried out on tensile Split Hopkinson Pressure Bar (SHPB) apparatus in the strain rate range of 140-400/s. For comparison, quasi-static properties were also generated on a universal testing machine. An increase of 75-93% was observed in through the thickness high strain rate tensile strength compared with quasi-static tensile strength. In the range of strain rate considered, as the strain rate was increased, the tensile strength increased up to 11% along the thickness direction. An increase of 63-88% was observed in high strain rate tensile strength along the fill compared with quasi-static tensile strength. In the range of strain rate considered, as the strain rate was increased, the tensile strength increased up to 16% along the fill direction. Since the plain weave fabric used was balanced, the properties along warp and fill are nearly identical. (C) 2009 Elsevier Ltd. All rights reserved.
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