Study of the blast resistance of GFRP laminates based on air shock tube

doi:10.19936/j.cnki.2096-8000.20220628.031

Abstract

Abstract: Based on the principle of shock tube, an 80 mm diameter air shock wave loading device was self-made and the relevant parameters were calibrated for the relationship between the peak value and velocity of the shock wave and the breaking pressure of the film. On this basis, a study of the blast resistance of GFRP laminates was carried out, and the dynamic response process of the laminates was obtained using a 3D full-field strain measurement system. The results show that the shock wave generated by using air shock tube can reasonably simulate the loading process of blast wave. The deflection of GFRP laminate during the shock wave loading increases according to S-type trend with the increase of shock wave pressure between 0.93 MPa and 3.93 MPa, and the residual deformation is not obvious after unloading. The laminate with prefabricated 2 mm small holes suffered tear damage under the shock wave of peak pressure of 3.5 MPa, indicating that the initial damage seriously affected the blast impact capability of the GFRP laminate.

Key words: explosive mechanics, air shock tube, GFRP laminate, blast resistance

CLC Number:

TB332

TIAN Rui, WEI Gang, ZHANG Hanzhe, WU Huapeng, DENG Yunfei. Study of the blast resistance of GFRP laminates based on air shock tube[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(3): 68-75.

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