On the application of laser shock peening for retardation of surface fatigue cracks in laser beam‐welded AA6056
The present study aims to investigate the extent to which the fatigue behaviour of laser beam‐welded AA6056‐T6 butt joints with an already existing crack can be improved through the application of laser shock peening. Ultrasonic testing was utilized for in situ (nondestructive) measurement of fatigu...
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| Veröffentlicht in: | Fatigue & fracture of engineering materials & structures 2020-07, Vol.43 (7), p.1500-1513 |
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| creator | Kashaev, Nikolai Ushmaev, Dmitrii Ventzke, Volker Klusemann, Benjamin Fomin, Fedor |
| description | The present study aims to investigate the extent to which the fatigue behaviour of laser beam‐welded AA6056‐T6 butt joints with an already existing crack can be improved through the application of laser shock peening. Ultrasonic testing was utilized for in situ (nondestructive) measurement of fatigue crack growth during the fatigue test. This procedure allowed the preparation of welded specimens with surface fatigue cracks with a depth of approximately 1.2 mm. The precracked specimens showed a 20% reduction in the fatigue limit compared with specimens without cracks in the as‐welded condition. Through the application of laser shock peening on the surfaces of the precracked specimens, it was possible to recover the fatigue life to the level of the specimens tested in the as‐welded condition. The results of this study show that laser shock peening is a very promising technique to recover the fatigue life of welded joints with surface cracks, which can be detected by nondestructive testing. |
| doi_str_mv | 10.1111/ffe.13226 |
| format | Article |
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Ultrasonic testing was utilized for in situ (nondestructive) measurement of fatigue crack growth during the fatigue test. This procedure allowed the preparation of welded specimens with surface fatigue cracks with a depth of approximately 1.2 mm. The precracked specimens showed a 20% reduction in the fatigue limit compared with specimens without cracks in the as‐welded condition. Through the application of laser shock peening on the surfaces of the precracked specimens, it was possible to recover the fatigue life to the level of the specimens tested in the as‐welded condition. The results of this study show that laser shock peening is a very promising technique to recover the fatigue life of welded joints with surface cracks, which can be detected by nondestructive testing.</description><identifier>ISSN: 8756-758X</identifier><identifier>EISSN: 1460-2695</identifier><identifier>DOI: 10.1111/ffe.13226</identifier><language>eng</language><publisher>Oxford: Wiley Subscription Services, Inc</publisher><subject>aluminium alloys ; Butt joints ; Butt welding ; Crack propagation ; Cracks ; fatigue crack ; Fatigue cracks ; Fatigue failure ; Fatigue life ; Fatigue limit ; Fatigue tests ; Fracture mechanics ; Laser applications ; Laser beam welding ; laser shock peening ; Laser shock processing ; Lasers ; Nondestructive testing ; Peening ; residual stress ; Surface cracks ; ultrasonic crack tip diffraction ; Ultrasonic testing ; Welded joints</subject><ispartof>Fatigue & fracture of engineering materials & structures, 2020-07, Vol.43 (7), p.1500-1513</ispartof><rights>2020 The Authors. 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Ushmaev, Dmitrii ; Ventzke, Volker ; Klusemann, Benjamin ; Fomin, Fedor</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3326-439497428c8cea46f30af77aa5313ebdbc52adf10ba3a0b8bdeac933cd0290363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>aluminium alloys</topic><topic>Butt joints</topic><topic>Butt welding</topic><topic>Crack propagation</topic><topic>Cracks</topic><topic>fatigue crack</topic><topic>Fatigue cracks</topic><topic>Fatigue failure</topic><topic>Fatigue life</topic><topic>Fatigue limit</topic><topic>Fatigue tests</topic><topic>Fracture mechanics</topic><topic>Laser applications</topic><topic>Laser beam welding</topic><topic>laser shock peening</topic><topic>Laser shock processing</topic><topic>Lasers</topic><topic>Nondestructive testing</topic><topic>Peening</topic><topic>residual stress</topic><topic>Surface cracks</topic><topic>ultrasonic crack tip diffraction</topic><topic>Ultrasonic testing</topic><topic>Welded joints</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kashaev, Nikolai</creatorcontrib><creatorcontrib>Ushmaev, Dmitrii</creatorcontrib><creatorcontrib>Ventzke, Volker</creatorcontrib><creatorcontrib>Klusemann, Benjamin</creatorcontrib><creatorcontrib>Fomin, Fedor</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>Wiley Online Library Free Content</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Fatigue & fracture of engineering materials & structures</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kashaev, Nikolai</au><au>Ushmaev, Dmitrii</au><au>Ventzke, Volker</au><au>Klusemann, Benjamin</au><au>Fomin, Fedor</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>On the application of laser shock peening for retardation of surface fatigue cracks in laser beam‐welded AA6056</atitle><jtitle>Fatigue & fracture of engineering materials & structures</jtitle><date>2020-07</date><risdate>2020</risdate><volume>43</volume><issue>7</issue><spage>1500</spage><epage>1513</epage><pages>1500-1513</pages><issn>8756-758X</issn><eissn>1460-2695</eissn><abstract>The present study aims to investigate the extent to which the fatigue behaviour of laser beam‐welded AA6056‐T6 butt joints with an already existing crack can be improved through the application of laser shock peening. Ultrasonic testing was utilized for in situ (nondestructive) measurement of fatigue crack growth during the fatigue test. This procedure allowed the preparation of welded specimens with surface fatigue cracks with a depth of approximately 1.2 mm. The precracked specimens showed a 20% reduction in the fatigue limit compared with specimens without cracks in the as‐welded condition. Through the application of laser shock peening on the surfaces of the precracked specimens, it was possible to recover the fatigue life to the level of the specimens tested in the as‐welded condition. 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| subjects | aluminium alloys Butt joints Butt welding Crack propagation Cracks fatigue crack Fatigue cracks Fatigue failure Fatigue life Fatigue limit Fatigue tests Fracture mechanics Laser applications Laser beam welding laser shock peening Laser shock processing Lasers Nondestructive testing Peening residual stress Surface cracks ultrasonic crack tip diffraction Ultrasonic testing Welded joints |
| title | On the application of laser shock peening for retardation of surface fatigue cracks in laser beam‐welded AA6056 |
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