Abstract
Stress measurement by using ultrasonic waves is based on acoustoelasticity law, i. e. the relation between stress and wave velocity in engineering materials. Longitudinal critically refracted (LCR) wave is a popular ultrasonic wave in the ultrasonic stress measurement application. The LCR wave is a bulk longitudinal wave that travels within an effective depth underneath the surface. This paper evaluates hoop residual stress variation in the thickness of a pipe. The pipe is manufactured by welding two dissimilar pipes from AISI stainless steel 304 and carbon steel A106-B type. The residual stresses variations in the thickness of pipe are measured by using four different frequencies of transducers while the nominal frequencies are 1 MHz, 2 MHz, 4 MHz and 5 MHz. Using different frequencies enables the LCR waves to penetrate in different depths and measure the bulk stresses of pipe. It has been shown that the stress difference between inner and outer surfaces of pipes and also between the stainless steel and carbon steel side of dissimilar pipe can be evaluated by using the LCR waves.
| Language | English |
|---|---|
| Pages | 329-335 |
| Number of pages | 7 |
| Journal | Tehnicki Vjesnik |
| Volume | 23 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 27 Apr 2016 |
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Keywords
- acoustoelastic effect
- dissimilar welded joint
- L wave
- ultrasonic stress measurement
- welding residual stress
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Evaluation of hoop residual stress variations in the thickness of dissimilar welded pipes by using the LCR ultrasonic waves. / Javadi, Yashar; Krolczyk, Grzegorz M.; Hloch, Sergej.
In: Tehnicki Vjesnik, Vol. 23, No. 2, 27.04.2016, p. 329-335.Research output: Contribution to journal › Article
TY - JOUR
T1 - Evaluation of hoop residual stress variations in the thickness of dissimilar welded pipes by using the LCR ultrasonic waves
AU - Javadi, Yashar
AU - Krolczyk, Grzegorz M.
AU - Hloch, Sergej
PY - 2016/4/27
Y1 - 2016/4/27
N2 - Stress measurement by using ultrasonic waves is based on acoustoelasticity law, i. e. the relation between stress and wave velocity in engineering materials. Longitudinal critically refracted (LCR) wave is a popular ultrasonic wave in the ultrasonic stress measurement application. The LCR wave is a bulk longitudinal wave that travels within an effective depth underneath the surface. This paper evaluates hoop residual stress variation in the thickness of a pipe. The pipe is manufactured by welding two dissimilar pipes from AISI stainless steel 304 and carbon steel A106-B type. The residual stresses variations in the thickness of pipe are measured by using four different frequencies of transducers while the nominal frequencies are 1 MHz, 2 MHz, 4 MHz and 5 MHz. Using different frequencies enables the LCR waves to penetrate in different depths and measure the bulk stresses of pipe. It has been shown that the stress difference between inner and outer surfaces of pipes and also between the stainless steel and carbon steel side of dissimilar pipe can be evaluated by using the LCR waves.
AB - Stress measurement by using ultrasonic waves is based on acoustoelasticity law, i. e. the relation between stress and wave velocity in engineering materials. Longitudinal critically refracted (LCR) wave is a popular ultrasonic wave in the ultrasonic stress measurement application. The LCR wave is a bulk longitudinal wave that travels within an effective depth underneath the surface. This paper evaluates hoop residual stress variation in the thickness of a pipe. The pipe is manufactured by welding two dissimilar pipes from AISI stainless steel 304 and carbon steel A106-B type. The residual stresses variations in the thickness of pipe are measured by using four different frequencies of transducers while the nominal frequencies are 1 MHz, 2 MHz, 4 MHz and 5 MHz. Using different frequencies enables the LCR waves to penetrate in different depths and measure the bulk stresses of pipe. It has been shown that the stress difference between inner and outer surfaces of pipes and also between the stainless steel and carbon steel side of dissimilar pipe can be evaluated by using the LCR waves.
KW - acoustoelastic effect
KW - dissimilar welded joint
KW - L wave
KW - ultrasonic stress measurement
KW - welding residual stress
UR - http://www.scopus.com/inward/record.url?scp=84965047141&partnerID=8YFLogxK
U2 - 10.17559/TV-20141103142658
DO - 10.17559/TV-20141103142658
M3 - Article
VL - 23
SP - 329
EP - 335
JO - Tehnicki vjesnik / Technical Gazette
T2 - Tehnicki vjesnik / Technical Gazette
JF - Tehnicki vjesnik / Technical Gazette
SN - 1330-3651
IS - 2
ER -