On the application of laser shock peening for retardation of surface fatigue cracks in laser beam-welded AA6056

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On the application of laser shock peening for retardation of surface fatigue cracks in laser beam-welded AA6056. / Kashaev, Nikolai; Ushmaev, Dmitrii; Ventzke, Volker et al.
in: Fatigue and Fracture of Engineering Materials and Structures, Jahrgang 43, Nr. 7, 01.07.2020, S. 1500-1513.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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@article{d11781c4bc3f4d13b963e7fd35b9bc7e,
title = "On the application of laser shock peening for retardation of surface fatigue cracks in laser beam-welded AA6056",
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. 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.",
keywords = "aluminium alloys, fatigue crack, laser beam welding, laser shock peening, residual stress, ultrasonic crack tip diffraction, Engineering",
author = "Nikolai Kashaev and Dmitrii Ushmaev and Volker Ventzke and Benjamin Klusemann and Fedor Fomin",
note = "The authors would like to thank Mr. Falk Dorn, Mr. Kai Erdmann, Mr. Christian Horstmann, Mr. Stefan Riekehr and Mr. Ren{\'e} Dinse from the Helmholtz-Zentrum Geesthacht for their technical support and assistance in the experimental work. Publisher Copyright: {\textcopyright} 2020 The Authors. Fatigue & Fracture of Engineering Materials & Structures published by John Wiley & Sons Ltd",
year = "2020",
month = jul,
day = "1",
doi = "10.1111/ffe.13226",
language = "English",
volume = "43",
pages = "1500--1513",
journal = "Fatigue and Fracture of Engineering Materials and Structures",
issn = "8756-758X",
publisher = "Wiley-Blackwell Publishing Ltd.",
number = "7",

}

RIS

TY - JOUR

T1 - On the application of laser shock peening for retardation of surface fatigue cracks in laser beam-welded AA6056

AU - Kashaev, Nikolai

AU - Ushmaev, Dmitrii

AU - Ventzke, Volker

AU - Klusemann, Benjamin

AU - Fomin, Fedor

N1 - The authors would like to thank Mr. Falk Dorn, Mr. Kai Erdmann, Mr. Christian Horstmann, Mr. Stefan Riekehr and Mr. René Dinse from the Helmholtz-Zentrum Geesthacht for their technical support and assistance in the experimental work. Publisher Copyright: © 2020 The Authors. Fatigue & Fracture of Engineering Materials & Structures published by John Wiley & Sons Ltd

PY - 2020/7/1

Y1 - 2020/7/1

N2 - 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.

AB - 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.

KW - aluminium alloys

KW - fatigue crack

KW - laser beam welding

KW - laser shock peening

KW - residual stress

KW - ultrasonic crack tip diffraction

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85083058704&partnerID=8YFLogxK

U2 - 10.1111/ffe.13226

DO - 10.1111/ffe.13226

M3 - Journal articles

AN - SCOPUS:85083058704

VL - 43

SP - 1500

EP - 1513

JO - Fatigue and Fracture of Engineering Materials and Structures

JF - Fatigue and Fracture of Engineering Materials and Structures

SN - 8756-758X

IS - 7

ER -

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