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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2019> 28(1): 184-190
Dejun Yin, Jian Zheng, Chao Xiong, Junhui Yin, Huiyong Deng, Xiaobo Su. Compressive Behaviour and Failure Mechanisms of GFRP Composite at High Strain Rates[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(1): 184-190. doi: 10.15918/j.jbit1004-0579.18075
Citation: Dejun Yin, Jian Zheng, Chao Xiong, Junhui Yin, Huiyong Deng, Xiaobo Su. Compressive Behaviour and Failure Mechanisms of GFRP Composite at High Strain Rates[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(1): 184-190.doi:10.15918/j.jbit1004-0579.18075
shu

Compressive Behaviour and Failure Mechanisms of GFRP Composite at High Strain Rates

doi:10.15918/j.jbit1004-0579.18075
  • 1.

    Department of Artillery Engineering, Army Engineering University, Shijiazhuang 050003, China

  • 2.

    Department of Artillery Engineering, Army Engineering University, Shijiazhuang 050003, China;Shijiazhuang Division of PLAA Infantry College, Shijiazhuang 050003, China

  • Received Date:2018-04-17
    Abstract
  • Experimental investigations into the compressive behavior of glass fiber reinforced polymer (GFRP) composite at high strain rates were carried out using a split Hopkinson pressure bar (SHPB) setup. The GFRP laminates were made from E-glass fibers and epoxy resins by vacuum assisted compression molding machine. The results of the compressive tests indicated that the mechanical behavior of the GFRP composite depends highly on the strain rate. The compressive peak stress, toughness and Young's modulus of the GFRP composite increased with the increase of strain rate, while the strain level at the initial stages of damage was shortened with the increase of strain rate. In addition, the dynamic deformation behavior and failure process of the specimens were observed directly by using a high-speed camera. Following the experiments, the fracture morphologies and damage modes were examined by scanning electron microscopy (SEM) to explore the possible failure mechanisms of the specimens. The results showed that multiple failure mechanisms appeared, such as matrix crack, fiber-matrix debonding, fiber failure and shear fracture.
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