Characterisation of friction stir spot welding process based on envelope analysis of vibro-acoustical signals

  1. Macías, E.J. 1
  2. Roca, A.S. 2
  3. Fals, H.C. 2
  4. Muro, J.C.S. 1
  5. Fernández, J.B. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 University of Oriente, Ave. Las Américas s/n, Santiago de Cuba, Cuba
Revue:
Science and Technology of Welding and Joining

ISSN: 1362-1718

Année de publication: 2015

Volumen: 20

Número: 2

Pages: 172-180

Type: Article

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DOI: 10.1179/1362171814Y.0000000268 SCOPUS: 2-s2.0-84921812310 WoS: WOS:000349565800011 GOOGLE SCHOLAR

D'autres publications dans: Science and Technology of Welding and Joining

Résumé

The evaluation of the relationship between the vibro-acoustical signals generated by friction stir spot welding (FSSW) process with its parameters and stages such as torque, dwell time, and tool rotation speed, is developed in this work. A dissimilar lap-joint was conducted using pure copper and AA1050 H24 aluminium alloy. The vibro-acoustical signals in Z and Y directions, and torque applied by the tool during the process have been acquired by the instrument NI USB-9234. The characterisation in the time and frequency domains of the vibro-acoustical signals has been performed in order to correlate them with the stages of processing and tool torque. The analysis has confirmed that the vibro-acoustical signals were significantly affected by changes in process forces and can thus be used as a non-destructive method for process monitoring, optimisation tasks, and control of FSSW process.