Analysis of the influence of metal mesh structure parameters on lightning


	protection effect of CFRP laminates

Abstract

Abstract:

To explore the influence of the geometric structure parameters of the metal mesh on its lightning protection ability, a

finite element model of carbon fiber reinforced composite (CFRP) laminates with different geometric structure parameters of the metal mesh protective layer was established. The thermal and electrical coupling analysis was used to

simulate the CFRP lightning ablation damage without protection, with aluminum mesh protection and with copper

mesh protection. CFRP ablation damage under copper mesh protection with different geometric structural parameters are compared and analysed. It is found that under the same geometric structure parameters, copper mesh has

better lightning protection effect than aluminum mesh. The geometric structure parameters of the metal mesh can

affect its lightning protection effect. The long and short intercept will affect the number of nodes of the metal mesh.

The lightning protection ability of the metal mesh will increase with the number of nodes. Increasing the width and

thickness of the wire can improve the lightning protection ability of the metal mesh, and the lightning protection ability improved by increasing the wire thickness is better than that by increasing the wire width. By comparing the

protective capability of copper mesh with different grid internal angles, it is found that 48° is the internal angle that

can relatively improve the lightning protection capability of metal mesh.

Key words:

CFRP laminate, lightning protection, geometrical structure parameter of metal mesh, finite element model, abla－

tive damage

CLC Number:

JIA Baohui a , LIU Xuyub , YANG Xiaob.

Analysis of the influence of metal mesh structure parameters on lightning

protection effect of CFRP laminates

[J]. Journal of Civil Aviation University of China, 2025, 43(2): 58-65.

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Analysis of the influence of metal mesh structure parameters on lightning

protection effect of CFRP laminates

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