Title :
Laser cutting ZrO2 ceramic with controlled fracture technique
Author :
Yang, Lijun ; Wang, Yang ; Tian, Zhongguo
Author_Institution :
State Key Lab. of Robot. & Syst., Harbin Inst. of Technol., Harbin, China
Abstract :
The research about laser cutting technology based on controlled fracture method has great potential to cutting ceramics. The paper investigate the controlled fracture technology to ZrO2 ceramic irradiated with Nd:YAG laser. In the experiment, laser energy produces a thermal stress that cause ceramic to separate along the moving path of laser beam. Graphite coated ceramic surface to improve the absorption rate for laser radiation. Optical microscope photographs and SEM of the separation surface are obtained to examine the surface quality. The surface qualities of ceramic obtained by laser and mechanical cutting are compared. Fracture propagation mechanism is studied by examining the temperature and stress fields using finite element software ANSYS12.1. The results show that good cutting quality of ceramic can be acquired by continuous Nd:YAG laser cutting with controlled fracture.
Keywords :
ceramics; finite element analysis; fracture mechanics; laser beam cutting; optical microscopes; quality control; scanning electron microscopy; thermal stress cracking; zirconium compounds; ANSYS 12.1 finite element software; Nd:YAG; SEM; ZrO2; absorption rate; controlled fracture technique; cutting quality; fracture propagation mechanism; graphite coated ceramic surface; laser cutting technology; laser energy production; laser radiation; mechanical cutting; optical microscope photographs; separation surface qualities; thermal stress; Ceramics; Laser beam cutting; Stress; Surface cracks; Surface emitting lasers; Surface morphology; Surface treatment; Ceramic; Controlled fracture technique; Laser cutting; Stress;
Conference_Titel :
Mechatronics and Automation (ICMA), 2012 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-1275-2
DOI :
10.1109/ICMA.2012.6284318
