Using welding simulation and ultrasonic method to evaluate residual stress in stainless steel welded plates

Javadi, Yashar and Raeisi, Mohammadreza Hadizadeh and Pirzaman, Hamed Salimi and Najafabadi, Mehdi Ahmadi; (2013) Using welding simulation and ultrasonic method to evaluate residual stress in stainless steel welded plates. In: ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2012. ASME, FRA, pp. 43-50. ISBN 9780791844847 (https://doi.org/10.1115/ESDA2012-82637)

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Abstract

When a material is under mechanical load, the stresses change the velocity of acoustic waves because of acoustoelastic effect. This property can be employed for stress measurement in the material itself when the stress concerns the surface of the material, or in the bulk material. This technique involves with critically refracted longitudinal waves that propagate parallel to the surface, i. e. LCR waves. This paper presents a three dimensional thermo-mechanical analysis to evaluate welding residual stresses in plate-plate joint of AISI stainless steel 304L. After finite element simulation, the residual stresses were evaluated by LCR ultrasonic waves. This paper introduces a combination of "Finite Element Welding Simulation" and "Ultrasonic Stress Measurement using the LCR Wave" which is called as "FELCR". The capabilities of FELCR in residual stress measurement are confirmed here. It has been shown that predicted residual stress from three dimensional FE analyses is in reasonable agreement with measured residual stress from LCR method.

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