평명 반사판을 이용한 레이저 충격파 세정 공정

• 영문명: Laser shock cleaning process using a plane reflector
• 발행기관: 한국레이저가공학회
• 저자명: 장덕석 오준호 이종명 김동식
• 간행물 정보: 『한국레이저가공학회 학술대회 논문집』2008년도 춘계학술발표대회 논문집, 210~215쪽, 전체 6쪽
• 주제분류: 공학 > 기계공학
• 파일형태: PDF
• 발행일자: 2008.06.30

영문 초록

It has been shown that the laser shock cleaning (LSC) method is effective to eliminate submicron-scale particulates from solid surfaces. In the LSC process, a high-power laser pulse induces optical breakdown of the ambient gas above the solid surface covered with contaminant particles. The subsuquently created shock wave followed by a high-speed flow stream detaches the particles. In this work, the amplification of shock wave pressure using a Shock wave reflector is introduced and demonstrated, numerically and experimentally. Shock wave reflector increases the shock wave pressure and can remove smaller particle compared with conventional LSC method. According to the numerical calculation, the shock wave pressure is amplified about double times by shock wave reflector. The experimental results conforms that the cleaning force and cleaning efficiency are increased by this method.

키워드

Laser cleaning Laser-induced shock wave Shock wave reflector