이종 폴리머 소재의 레이저 투과 용접 시 용접부의 전단 특성 연구 (A Study on the Shear Characteristics of the Welding Zone in the Laser Transmission Welding of Heterogeneous Polymer Materials)

서지정보

· 발행기관 : 한국정밀공학회
· 수록지 정보 : 한국정밀공학회지 / 39권 / 6호 / 417 ~ 423페이지
· 저자명 : 최대철, 한영구, 홍민철, 정성균, 신기훈, 나기정, 정종설, 유호훈

초록

In this study, laser transmission welding of two heterogeneous polymeric materials was performed and the effect of laser process parameters on the weld joint strength was investigated by shear test corresponding to ASTM standard D3163-01. Specifically, laser transmission welding of 2 mm thick PMMA and PC/ABS was performed using a thulium laser with wavelength and focusing diameter of 2 μm and 1 mm, respectively. The experimental results showed that the bonding strength increases as the laser energy transmitted to the welding zone increases, but too strong energy causes a decrease in the mechanical properties of the heat-affected zone. Thus, it is necessary to find the laser process parameters (maximum laser power and laser scan speed) that can secure sufficient bonding strength within the allowable range where surface defects do not occur in the actual process.

영어초록

In this study, laser transmission welding of two heterogeneous polymeric materials was performed and the effect of laser process parameters on the weld joint strength was investigated by shear test corresponding to ASTM standard D3163-01. Specifically, laser transmission welding of 2 mm thick PMMA and PC/ABS was performed using a thulium laser with wavelength and focusing diameter of 2 μm and 1 mm, respectively. The experimental results showed that the bonding strength increases as the laser energy transmitted to the welding zone increases, but too strong energy causes a decrease in the mechanical properties of the heat-affected zone. Thus, it is necessary to find the laser process parameters (maximum laser power and laser scan speed) that can secure sufficient bonding strength within the allowable range where surface defects do not occur in the actual process.

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