Acoustic process monitoring in laser beam welding

Improving Laser Beam Welding Efficiency

Laser beam welding is becoming widely used in many industrial applications. This paper reviews recent research conducted on the performance, potential and problems of thick section butt joint laser welding. Common defects that occur in laser beam welding with high power laser welding are discussed and possible solutions proposed. Methods of welding process efficiency improvement are analyzed.

Numerical simulation of laser beam welding of Ti6Al4V sheet

This paper was aimed to report the 3D finite element analysis simulation of laser welding process of Ti6Al4V 1.7 mm sheets in butt joint in order to predict the temperature distribution, hardness, and weld geometry. The butt-joint welds were made using CO2 laser with the maximum power of 2.2 kW in the continuous wave mode. A part of the experimental work was carried out to verify the weld geome...

Online Monitoring of Electron Beam Welding of TI6AL4V Alloy Through Acoustic Emission

Acoustic Emission (AE) Technique is the only Non Destructive Testing (NDT) method that can be thought of to be used as an online monitoring tool for detection, location and characterization of various kinds of active defects during any process. An effective approach of quality control is defect detection during welding process itself rather than by NDT of component after welding. Weld defects g...

Monitoring of Welding Using Laser Diodes

A Non-Intrusive GMA Welding Process Quality Monitoring System Using Acoustic Sensing

Most of the inspection methods used for detection and localization of welding disturbances are based on the evaluation of some direct measurements of welding parameters. This direct measurement requires an insertion of sensors during the welding process which could somehow alter the behavior of the metallic transference. An inspection method that evaluates the GMA welding process evolution usin...