A Study on Drilling High-Strength CFRP Laminates: Frictional Heat and Cutting Temperature

被引:34
|
作者
Xu, Jinyang [1 ]
Li, Chao [1 ]
Dang, Jiaqiang [1 ]
El Mansori, Mohamed [2 ,3 ]
Ren, Fei [4 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
[2] MSMP, EA 7350, Arts & Metiers ParisTech, F-51006 Chalons Sur Marne, France
[3] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77840 USA
[4] Shanghai Aerosp Equipments Manufacturer Co Ltd, Shanghai 200245, Peoples R China
基金
中国国家自然科学基金;
关键词
high-strength CFRP composites; drilling; frictional heat; cutting temperature; DELAMINATION; QUALITY; SURFACE; HOLE;
D O I
10.3390/ma11122366
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
High-strength carbon fiber reinforced polymer (CFRP) composites have become popular materials to be utilized in the aerospace and automotive industries, due to their unique and superior mechanical properties. An understanding of cutting temperatures is rather important when dealing with high-strength CFRPs, since machining defects are likely to occur because of high temperatures (especially in the semi-closed drilling process). The friction behavior at the flank tool-workpiece interface when drilling CFRPs plays a vital role in the heat generation, which still remains poorly understood. The aim of this paper is to address the friction-induced heat based on two specially-designed tribometers to simulate different sliding velocities, similar to those occurring along the flank tool-work interface in drilling. The elastic recovery effect during the drilling process was considered during the tribo-drilling experiments. The drilling temperatures were calculated by the analytical model and verified by the in-situ experimental results gained using the embedded thermocouples into the drills. The results indicate that the magnitudes of the interfacial friction coefficients between the cemented carbide tool and the CFRP specimen are within the range between 0.135-0.168 under the examined conditions. Additionally, the friction caused by the plastic deformation and elastic recovery effects plays a dominant role when the sliding velocity increases. The findings in this paper point out the impact of the friction-induced heat and cutting parameters on the overall drilling temperature.
引用
收藏
页数:13
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