Effect of lightning current parameters on damage of carbon fiber composites subjected to lightning strike

doi:10.19936/j.cnki.2096-8000.20220528.031

Abstract

Abstract: In this paper, the damage mechanism of carbon fiber reinforced polymer (CFRP) composite under simulated lightning current was studied by the lightning simulation experiment and finite element (FE) method. An electrical-thermal coupled FE model considering the dielectric breakdown effect was established, and the damage area and depth calculated by the model were compared with the experimental results of lightning strike simulation, which verified the validity of the finite element model. After that, the influence of lightning current parameters on lightning damage of carbon fiber composites was explored by using the identified FE model. The results show that when the lightning current waveform is the same, the relationship between the action integral of lightning current and the damage area of the FE model is linear. When the action integral and intensity of lightning current are the same, the damage area of CFRP composite decreases with the decrease of the rise time of the current waveform, but the damage depth increases.

Key words: CFRP composites, lightning damage, dielectric breakdown, finite element (FE) method

CLC Number:

TB332

KUANG Cheng-zhao, ZHU Hui-xin, FU Kun-kun. Effect of lightning current parameters on damage of carbon fiber composites subjected to lightning strike[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(12): 101-107.

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