이종 폴리머 소재의 레이저 투과 용접 시 결함의 실험적 평가

Translated title of the contribution: Experimental Evaluation of Defects in Laser-Transmission Welding of Heterogeneous Polymer Materials

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the laser process parameters were determined at which surface and sectional defects begin to occur during the laser-transmission welding of two heterogeneous polymer materials. Specifically, laser-transmission welding of PMMA and PC/ABS with thicknesses of 2 mm each was conducted using a thulium laser with a wavelength and focusing diameter of 2 μm and 1 mm, respectively. The experimental results show that the laser power at the time of defect occurrence also increases proportionally as the laser scan speed increases, but the corresponding energy density decreases. In addition, the ratio of the welding width to the laser diameter at defect occurrence slightly decreases from 1.25 to 1.13 with increasing scan speed. Based on the experimental results, it is necessary to increase the laser scan speed and power simultaneously within the allowable range in terms of energy efficiency and production time during laser-transmission welding.
Translated title of the contributionExperimental Evaluation of Defects in Laser-Transmission Welding of Heterogeneous Polymer Materials
Original languageKorean
Pages (from-to)134-141
Number of pages8
Journal한국생산제조학회지
Volume30
Issue number2
DOIs
StatePublished - Apr 2021

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