Comparison between contact and immersion ultrasonic method to evaluate welding residual stresses of dissimilar joints

Yashar Javadi; Mehdi Ahmadi Najafabadi

doi:10.1016/j.matdes.2012.12.069

Comparison between contact and immersion ultrasonic method to evaluate welding residual stresses of dissimilar joints

Yashar Javadi, Mehdi Ahmadi Najafabadi

Electronic And Electrical Engineering

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

This paper presents a comparison of contact and immersion waves used to measure residual stresses. The residual stresses are produced due to a dissimilar welding of stainless steel (304) to carbon steel (A106). Longitudinal critically refracted (L_CR) wave propagated by 2. MHz contact and immersion ultrasonic transducers is employed to measure the residual stresses. A Finite Element (FE) model of welding process, which is validated by hole-drilling method, is used to verify the ultrasonic results while an acceptable agreement is achieved. The best agreement is observed in the parent material while the maximum difference is measured in the heat affected zone (HAZ). The results show no considerable difference between using contact and immersion transducers in ultrasonic stress measurement of dissimilar joints.

Original language	English
Pages (from-to)	473-482
Number of pages	10
Journal	Materials and Design
Volume	47
Early online date	5 May 2013
DOIs	https://doi.org/10.1016/j.matdes.2012.12.069
Publication status	Published - 31 May 2013

Keywords

acoustoelastic constant
dissimilar welding
finite element welding simulation
immersion ultrasonic method
non-destructive stress measurement
welding residual stress

Access to Document

10.1016/j.matdes.2012.12.069

Javadi-Najafabadi-MD-2013-Comparison-between-contact-and-immersion-ultrasonic-methodAccepted author manuscript, 2.47 MBLicence: CC BY-NC-ND 4.0

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title = "Comparison between contact and immersion ultrasonic method to evaluate welding residual stresses of dissimilar joints",

abstract = "This paper presents a comparison of contact and immersion waves used to measure residual stresses. The residual stresses are produced due to a dissimilar welding of stainless steel (304) to carbon steel (A106). Longitudinal critically refracted (LCR) wave propagated by 2. MHz contact and immersion ultrasonic transducers is employed to measure the residual stresses. A Finite Element (FE) model of welding process, which is validated by hole-drilling method, is used to verify the ultrasonic results while an acceptable agreement is achieved. The best agreement is observed in the parent material while the maximum difference is measured in the heat affected zone (HAZ). The results show no considerable difference between using contact and immersion transducers in ultrasonic stress measurement of dissimilar joints.",

keywords = "acoustoelastic constant, dissimilar welding, finite element welding simulation, immersion ultrasonic method, non-destructive stress measurement, welding residual stress",

author = "Yashar Javadi and Najafabadi, {Mehdi Ahmadi}",

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N2 - This paper presents a comparison of contact and immersion waves used to measure residual stresses. The residual stresses are produced due to a dissimilar welding of stainless steel (304) to carbon steel (A106). Longitudinal critically refracted (LCR) wave propagated by 2. MHz contact and immersion ultrasonic transducers is employed to measure the residual stresses. A Finite Element (FE) model of welding process, which is validated by hole-drilling method, is used to verify the ultrasonic results while an acceptable agreement is achieved. The best agreement is observed in the parent material while the maximum difference is measured in the heat affected zone (HAZ). The results show no considerable difference between using contact and immersion transducers in ultrasonic stress measurement of dissimilar joints.

AB - This paper presents a comparison of contact and immersion waves used to measure residual stresses. The residual stresses are produced due to a dissimilar welding of stainless steel (304) to carbon steel (A106). Longitudinal critically refracted (LCR) wave propagated by 2. MHz contact and immersion ultrasonic transducers is employed to measure the residual stresses. A Finite Element (FE) model of welding process, which is validated by hole-drilling method, is used to verify the ultrasonic results while an acceptable agreement is achieved. The best agreement is observed in the parent material while the maximum difference is measured in the heat affected zone (HAZ). The results show no considerable difference between using contact and immersion transducers in ultrasonic stress measurement of dissimilar joints.

KW - acoustoelastic constant

KW - dissimilar welding

KW - finite element welding simulation

KW - immersion ultrasonic method

KW - non-destructive stress measurement

KW - welding residual stress

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