Effective Linear Friction Welding Machine Redesign through ProcessAnalysis

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Abstract

Linear friction welding is a solid-state joining process developed for non-axisymmetriccomponents in which the joining of the specimens is obtained through reciprocating motion andpressure. In the process, the friction forces work due to the high frequency oscillation and thepressure between the specimens is converted in thermal energy. In order to design an effectivemachine, relevant issues derive from the high frequency and the large inertial forces involved in theprocess. In this study, the authors describe the redesign of a preexisting prototypal machine for LFWprocesses. A machine redesign is needed when welding high resistant materials, i.e. steels ortitanium alloys, with high frequencies, up to 72 Hz. The sensors equipping the machine allows inprocess measurements of key process variables as temperatures of the specimens, tangential forces,accelerations and speeds. At the same time through the acquired data, the main weaknesses of themachine can be highlighted allowing for effective redesign.
Lingua originaleUndefined/Unknown
Titolo della pubblicazione ospiteKEY ENGINEERING MATERIALS
Numero di pagine8
Stato di pubblicazionePublished - 2014

Serie di pubblicazioni

NomeKEY ENGINEERING MATERIALS

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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