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

Yashar Javadi, Mehdi Ahmadi Najafabadi

Research output: Contribution to journalArticle

35 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 (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.

LanguageEnglish
Pages473-482
Number of pages10
JournalMaterials and Design
Volume47
DOIs
Publication statusPublished - May 2013
Externally publishedYes

Fingerprint

Residual stresses
Welding
Ultrasonics
Ultrasonic measurement
Ultrasonic transducers
Stress measurement
Stainless Steel
Heat affected zone
Carbon steel
Transducers
Drilling
Stainless steel

Keywords

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

Cite this

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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.",
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Comparison between contact and immersion ultrasonic method to evaluate welding residual stresses of dissimilar joints. / Javadi, Yashar; Najafabadi, Mehdi Ahmadi.

In: Materials and Design, Vol. 47, 05.2013, p. 473-482.

Research output: Contribution to journalArticle

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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.

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