A comparative study of ultrasound emission characteristics in laser processing

被引：30

作者：

Li, L ^{[1
]}

机构：

[1] Univ Manchester, Inst Sci & Technol, Laser Proc Res Ctr, Dept Mech Aerosp & Mfg Engn, Manchester M60 1QD, Lancs, England

来源：

APPLIED SURFACE SCIENCE | 2002年 / 186卷 / 1-4期

关键词：

acoustic; emission; nozzle; mirror; laser; processing; welding; monitoring;

D O I：

10.1016/S0169-4332(01)00695-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The characteristics of two types of ultrasonic acoustic emissions observed in laser material processing involving melting, vaporisation and plasma generation are compared. These acoustic emission sources are: (a) ultrasonic airborne acoustic emissions due to plasma/vapour generation (acoustic nozzle) and (b) acoustic emission on the back of laser beam guide mirrors (acoustic mirror) due to laser beam back reflection. Both experimental work and theoretical analyses have been carried out to clarify the nature of the signals. A new interpretation of the "acoustic mirror" signal generation is given. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：604 / 610

页数：7

共 15 条

[1] THE EFFECT OF SURFACE CONDITION ON ACOUSTIC-EMISSION DURING WELDING OF ALUMINUM WITH CO2-LASER RADIATION [J].