尽量减少CFRP层材中的分层:对钻孔和冲孔效应的实验和数值见解
Murat Demiral1, Tamer Saracyakupoglu2, Burhan Şahin2
1College of Engineering and Technology, American University of the Middle East, Egaila 54200, Kuwait.
Polymers
|November 27, 2025
概括
本研究检查了碳纤维增强聚合物 (CFRP) 层材在钻孔和冲孔过程中的分层. 对于较厚的CFRP板材,通常会优先进行钻探,以保持其完整性和工具寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 复合材料 复合材料 复合材料
背景情况:
- 碳纤维增强聚合物 (CFRP) 层材具有高强度与重量比,但由于间层强度较低,容易发生分层.
- 钻孔和冲孔等机械过程会引起应力,应力会集中在弱的接口上,从而导致分层.
研究的目的:
- 在钻孔和冲孔过程中研究CFRP层材的分层行为.
- 分析层数和钻孔速度对分层的影响.
- 在钻井和冲孔过程中比较损坏水平.
主要方法:
- 使用8毫米钻头和穿孔在不同速度 (2500-3500rpm) 进行3至7层CFRP层板材的实验测试.
- 扫描电子显微镜 (SEM) 用于量化分层程度.
- 3D有限元模型 (ABAQUS/Explicit) 使用哈辛故障标准和凝聚性表面进行损坏模拟.
主要成果:
- 分层是CFRP层材中面临平面外应力的一个关键故障模式.
- 钻孔速度显著影响了分层的程度.
- 在适当的支持下,穿孔可以引起与钻孔在薄型CFRP板块中相似的损伤.
结论:
- 钻孔是加工较厚的CFRP层材的首选方法,以确保更好的结构完整性和工具耐用性.
- 了解分层机制对于优化CFRP组件在苛刻应用中的制造流程至关重要.
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