Monitoring laser cut quality using acoustic emission
Monitoring laser cut quality using acoustic emission
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DOI：
10.1016/j.ijmachtools.2008.08.006
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发表时间：
2009-01-01
影响因子：
14
通讯作者：
Grum, Janez
中科院分区：
文献类型：
--
作者：
Kek, Tomaz;Grum, Janez
本文介绍了汽车车身零件生产中常用的钢板激光切割过程中所获得的声发射(AE)信号的分析结果。在激光切割过程中，测量了与激光切割质量有关的连续信号。在激光切割特征之后，可以检测到样品材料中的声发射爆发，这是热影响的结果。熔渣的存在是激光切割质量差的一个重要指标。对DC04非合金钢薄板和1.5 mm厚的奥氏体不锈钢X5CrNi18-10薄板进行了激光切割试验。然而，两种钢在切割形成过程中相同的物理机制导致了相当大的不同的切割质量，这从切割过程后捕获的声发射信号可以看出。(C)2008爱思唯尔有限公司。保留所有权利。
The paper presents results of an analysis of acoustic-e mission (AE) signals obtained during laser cutting of a steel plates, which are frequently used in the production of automotive body components. In the course of laser cutting, continuous signals, which are related to the quality achieved of the laser cut, are measured. After laser cutting characteristic AE bursts in the specimen material, which are results of a thermal influence, can be detected. The presence of dross is an important indicator of poor quality of laser cutting. The investigation on laser cutting was conducted on an unalloyed steel DC04 sheet and on austenitic stainless steel X5CrNi18-10 sheet of 1.5mm in thickness. The same physical mechanism in the cut formation at both steels, however, resulted in a considerable different cut quality, which was indicated by the AE signals captured after the cutting process. (C) 2008 Elsevier Ltd. All rights reserved.