期刊
MATERIALS TODAY COMMUNICATIONS
卷 32, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtcomm.2022.104103
关键词
Adhesive joints; CFRP; Cohesive zone models; Toughening
资金
- King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR), Saudi Arabia [OSR-2017-CRG6-3388.01]
This study focuses on secondary bonded composite/metal joints and explores a toughening approach enabled by a snap-through cracking process, which significantly enhances load bearing capacity and dissipated energy.
As the demand for structural light-weighting continues to rise, so does the interest in bonding with structural adhesives. However, adhesive joints are subjected to the nucleation and growth of cracks, and there is a growing need for toughening strategies that can prevent catastrophic failures. This work focuses on secondary bonded composite/metal joints and explores a toughening approach enabled by a snap-through cracking process. A composite flat panel is bonded with a corrugated aluminum substrate with a square-wave profile, whose geometry is defined by grooves' spacing, depth, and width. These key geometrical parameters provide opportunities to tailor the mechanics of crack growth and were chosen by resorting to finite element simulations with cohesive elements. The computational results are validated by experiments that systematically show the occurrence of snap-through cracking and a significant enhancement of load bearing capacity and dissipated energy (up to 260%) compared to adhesive joints without corrugation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据