Research on the residual strength of the CFRP page-type adhesive joints after transverse impact

doi:10.19936/j.cnki.2096-8000.20260928.003

Abstract

Abstract: Adhesive joints are among the most vulnerable regions in composite material structures, particularly susceptible to damage under lateral impacts, which significantly affects their connection strength. This study proposes a novel page-type adhesive joint (PTAJ) and investigates its transverse impact damage and residual strength through finite element simulation and experimental testing. The findings demonstrate that the post-impact residual strength coefficient of the PTAJ exhibits a decreasing trend with increasing impact energy. Notably, the residual strength coefficient significantly improves with an increase in lap length. Furthermore, the PTAJ achieves a residual strength exceeding four times that of a single-lap adhesive joint of comparable dimensions, thereby showcasing its superior impact resistance characteristics and engineering potential.

Key words: carbon fiber composite material, page-type adhesive joint, transverse impact, residual strength

CLC Number:

TB332

YANG Mo, WAN Shuai, HU Jinkai, XUAN Hao, ZHOU Yuebin. Research on the residual strength of the CFRP page-type adhesive joints after transverse impact[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(9): 20-29.

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