Ultrasonic stress evaluation through thickness of a stainless steel pressure vessel

Yashar Javadi, Hamed Salimi Pirzaman, Mohammadreza Hadizadeh Raeisi, Mehdi Ahmadi Najafabadi

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper investigates ultrasonic method in stress measurement through thickness of a pressure vessel. Longitudinal critically refracted (LCR) waves are employed to measure the welding residual stresses in a vessel constructed from austenitic stainless steel 304L. The acoustoelastic constant is measured through a hydro test to keep the pressure vessel intact. Hoop and axial residual stresses are evaluated by using different frequency range of ultrasonic transducers. The welding processes of vessel shell and caps are simulated by a 3D finite element (FE) model which is validated by hole-drilling method. The residual stresses calculated by FE simulation are then compared with those obtained from the ultrasonic measurement while a good agreement is observed. It is demonstrated that the residual stresses through thickness of the stainless steel pressure vessel can be evaluated by combining FE and LCR method (known as FELCR method).

Original languageEnglish
Pages (from-to)111-120
Number of pages10
JournalInternational Journal of Pressure Vessels and Piping
Volume123-124
Early online date6 Sep 2014
DOIs
Publication statusPublished - 31 Dec 2014

Keywords

  • acoustoelastic constant
  • finite element welding simulation
  • pressure vessel
  • through thickness stress
  • ultrasonic stress measurement

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