Journal
OPTIK
Volume 242, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.167186
Keywords
Fiber laser; 2.5D c(f)/SiC composite; Micro-hole machining; Feasibility analysis; Multi-objective genetic algorithm
Categories
Funding
- Natural Science Foundation of Tianjin [18JCQNJC75600]
- Tianjin Research Innovation Project for Postgraduate Students [2020YJSS053]
- National Natural Science Foundation of China [51705362]
Ask authors/readers for more resources
By using fiber laser trepan drilling, high-quality micro-hole machining of 2.5D C-f/SiC composite can be achieved. Optimization methods including Taguchi orthogonal array, analysis of variance, regression modeling, and multi-objective genetic algorithm can minimize taper and heat affected zone.
The special structure characteristics make 2.5D C-f/SiC composite a key material in high-temperature parts of aerospace field. However, the micro-hole machining based on fiber laser has been a challenge due to effect of taper and heat affected zone. This paper proposed the feasibility on high-quality micro-hole machining of the 2.5D C-f/SiC composite by using fiber laser trepan drilling, including experimental investigation and optimization analysis for the first time. The key laser parameters, such as scanning speed, pulse frequency, pulse width, defocus amount, and energy percentage are introduced as the optimization parameters, and taper and average thickness of heat affected zone (HAZ(a)) are chosen as objectives. A comprehensive analysis method including Taguchi L-16(4(5)) orthogonal array, analysis of variance (ANOVA), regression modeling, and multi-objective genetic algorithm (MOGA-II) is presented on fiber laser trepan drilling to minimize the taper and the HAZ(a). The importance and interaction of the laser parameters on the taper and HAZ(a) are obtained. The results show that the fiber laser trepan drilling integrated with the proposed experimental and optimization analysis can achieve the high-quality micro-hole machining of 2.5D C-f/SiC composite. The presented methodology can be also used in high-quality machining of other fields.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available