Application of Acoustic Emission Technique to Monitor Friction Stir Welding Process to Produce Defect Free Welds

Rajaprakash, B.M.; Suresha, C. N.; Upadhya, S. Mamatha

doi:10.1002/9781118658345.ch36

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Rajaprakash et al 205 used acoustic emission technique to monitor the FSW process during welding of AA 7020-T6 alloys. They carried out experiments by continuously varying the tool rotational speed and weld traverse speed during welding.…”

Section: Online Monitoring Of Fsw Processmentioning

confidence: 99%

Friction stir welding of aluminium alloys: An overview of experimental findings – Process, variables, development and applications

Shah

Badheka

2017

Proceedings of the Institution of Mechanical Engineers, Part L:

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The never ending appetite of the mankind to produce more and more competitive products results in continuous development of newer and newer manufacturing processes. One of such a kind, a solid state welding process highly appreciated for joining of a variety of aluminium and copper alloys, is friction stir welding. The process is also an accomplished method for joining dissimilar materials efficiently. The process finds its major application for joining hard-to-weld metals, especially the precipitation hardenable aluminium alloys and is widely adopted by industries for the welding of such aluminium alloys. However, the process has still not found an economical way for welding of steels and hence found limited applications in industries for welding steels. This paper aims at providing a comprehensive review of the work undertaken in the field of friction stir welding and provides an insight into the friction stir welding of aluminium alloys. The article pays critical attention and analytical evaluation of classification of aluminium alloys, friction stir welding process parameters, the mechanical testing and properties of the friction stir welding joints, macrostructure and microstructure evolution during friction stir welding, friction stir welding defects and industrial applications of the process. The friction stir welding process variants are discussed as well. Special accentuation has been given to (i) effect of friction stir welding parameters on the microstructure evolved and thus the ultimate mechanical properties (viz. tensile strength, hardness, fatigue strength, fracture toughness and residual stresses), (ii) the texture formation, microstructure refinement and the role of intermetallics. However, studies related to welding of dissimilar aluminium alloys, temperature, and heat transfer modeling and material flow are out of the scope of this paper. Finally, the directions of future research are examined.

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Section: Online Monitoring Of Fsw Processmentioning

confidence: 99%

Friction stir welding of aluminium alloys: An overview of experimental findings – Process, variables, development and applications

Shah

Badheka

2017

Proceedings of the Institution of Mechanical Engineers, Part L:

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Application of Acoustic Emission Technique for Online Monitoring of Friction Stir Welding Process during Welding of AA6061‐T6 Aluminum Alloy

Rajaprakash¹,

Suresha²,

Rachappa³

et al. 2014

TMS 2014 Supplemental Proceedings

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Acoustic Emission (AE) technique has been successfully used to monitor processes like metal cutting, grinding and electron beam welding as a nondestructive evaluation method. Friction Stir Welding (FSW) is a solid state welding that avoids problems associated with fusion welding and is used in aerospace industries. An attempt has been made to study the application of AE technique to monitor FSW process by identifying the occurrence of defect while welding is in progress and suggest means to rectify the defect. In this study, aluminum alloy AA6061-T6 has been used as work piece material. It was observed that the nature of AE signals produced during welding are helpful in identifying the occurrence of defects produced. The values of a few AE parameters derived from AE signals were found to be helpful in developing a model for online monitoring of FSW process to produce defect free welds. The model has been successfully validated.

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Application of Acoustic Emission as an Effective Tool to Monitor FSW of AA2024‐T3 Aluminum Alloy

Rajaprakash¹,

Suresha²,

Upadhya³

2015

Friction Stir Welding and Processing VIII

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Application of Acoustic Emission Technique to Monitor Friction Stir Welding Process to Produce Defect Free Welds

Cited by 3 publications

References 10 publications

Friction stir welding of aluminium alloys: An overview of experimental findings – Process, variables, development and applications

Friction stir welding of aluminium alloys: An overview of experimental findings – Process, variables, development and applications

Application of Acoustic Emission Technique for Online Monitoring of Friction Stir Welding Process during Welding of AA6061‐T6 Aluminum Alloy

Application of Acoustic Emission as an Effective Tool to Monitor FSW of AA2024‐T3 Aluminum Alloy

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