Details
| Original language | English |
|---|---|
| Pages (from-to) | 237-258 |
| Number of pages | 22 |
| Journal | Advanced steel construction |
| Volume | 5 |
| Issue number | 3 |
| Publication status | Published - Sept 2009 |
Abstract
This paper deals with fatigue tests on welded joints carried out in order to estimate the influence of a post weld treatment method called Ultrasonic Impact Treatment. With this method the fatigue resistance could be increased significantly. Furthermore, tubular joints of tripods were analysed with numerical simulations to judge these welded joints with the hot-spot-concept. The stress concentration factor for the treated weld toe geometry was determined numerically and compared to experimental results. In the next step numerical simulations were carried out for seam butt welds using an arc welding process followed by a process of UIT. The objective of these numerical investigations was to analyse the influence of residual stresses on the fatigue life for welded steel plates with and without post weld treatment. The fatigue life until crack initiation was calculated applying the notch strain approach. Both, experimental and numerical investigations attested a significant increase in fatigue resistance due to the post weld treatment by UIT compared to the as-welded condition.
Keywords
- Fatigue, Needle peening, Offshore, Post weld treatment, UIT, Welded joints, Wind energy
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Advanced steel construction, Vol. 5, No. 3, 09.2009, p. 237-258.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Experiments and simulations of post weld treatment with high frequency needle peening for welded joints
AU - Schaumann, P.
AU - Keindorf, C.
PY - 2009/9
Y1 - 2009/9
N2 - This paper deals with fatigue tests on welded joints carried out in order to estimate the influence of a post weld treatment method called Ultrasonic Impact Treatment. With this method the fatigue resistance could be increased significantly. Furthermore, tubular joints of tripods were analysed with numerical simulations to judge these welded joints with the hot-spot-concept. The stress concentration factor for the treated weld toe geometry was determined numerically and compared to experimental results. In the next step numerical simulations were carried out for seam butt welds using an arc welding process followed by a process of UIT. The objective of these numerical investigations was to analyse the influence of residual stresses on the fatigue life for welded steel plates with and without post weld treatment. The fatigue life until crack initiation was calculated applying the notch strain approach. Both, experimental and numerical investigations attested a significant increase in fatigue resistance due to the post weld treatment by UIT compared to the as-welded condition.
AB - This paper deals with fatigue tests on welded joints carried out in order to estimate the influence of a post weld treatment method called Ultrasonic Impact Treatment. With this method the fatigue resistance could be increased significantly. Furthermore, tubular joints of tripods were analysed with numerical simulations to judge these welded joints with the hot-spot-concept. The stress concentration factor for the treated weld toe geometry was determined numerically and compared to experimental results. In the next step numerical simulations were carried out for seam butt welds using an arc welding process followed by a process of UIT. The objective of these numerical investigations was to analyse the influence of residual stresses on the fatigue life for welded steel plates with and without post weld treatment. The fatigue life until crack initiation was calculated applying the notch strain approach. Both, experimental and numerical investigations attested a significant increase in fatigue resistance due to the post weld treatment by UIT compared to the as-welded condition.
KW - Fatigue
KW - Needle peening
KW - Offshore
KW - Post weld treatment
KW - UIT
KW - Welded joints
KW - Wind energy
UR - http://www.scopus.com/inward/record.url?scp=77952927700&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:77952927700
VL - 5
SP - 237
EP - 258
JO - Advanced steel construction
JF - Advanced steel construction
SN - 1816-112X
IS - 3
ER -