Abstract :
Acoustic emission technique is a fruitful technique in process and machine condition monitoring due to its
good sensitivity in great affectability signal domain. Friction stir welding (FSW) is a solid-state welding process that
is ideally suitable for joining materials with low melting point, such as aluminium alloys, which could be well
assessed by this technique. This paper exhibits a brief review of contemporary literature on application of acoustic
emission technique in the analysis of friction stir welding process. It was observed from the literature that the various
acoustic emission parameters were well influenced by this process. Commonly used AE signal analysis methods are
addressed. There is a scope for enhanced study of the process using the AE signals, which will lead to the
development of intelligent adaptive real time control system to get defect free high strength weld in all varying
process conditions.
Keyword :
Acoustic emission, Friction stir weld, AE sensor, weld strength, Condition monitoring.