The influence of laser shock peening on fatigue properties of AA2024-T3 alloy with a fastener hole
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The influence of laser shock peening on fatigue properties of AA2024-T3 alloy with a fastener hole. / Sikhamov, Ruslan; Fomin, Fedor; Klusemann, Benjamin et al.
In: Metals, Vol. 10, No. 4, 495, 09.04.2020.Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - The influence of laser shock peening on fatigue properties of AA2024-T3 alloy with a fastener hole
AU - Sikhamov, Ruslan
AU - Fomin, Fedor
AU - Klusemann, Benjamin
AU - Kashaev, Nikolai
PY - 2020/4/9
Y1 - 2020/4/9
N2 - The objective of the present study was to estimate the influence of laser shock peening on the fatigue properties of AA2024-T3 specimens with a fastener hole and to investigate the possibility to heal the initial cracks in such specimens. Fatigue cracks of different lengths were introduced in the specimens with a fastener hole before applying laser shock peening. Deep compressive residual stresses, characterized by the hole drilling method, were generated into the specimens by applying laser shock peening on both sides. Subsequently, the specimens were subjected to fatigue tests. The results show that laser shock peening has a positive effect regarding the fatigue life improvement in the specimens with a fastener hole. In addition, laser shock peening leads to a healing effect on fatigue cracks. The efficiency of this effect depends on the initial crack length. The effect of laser shock peening on the fatigue life periods was determined by using resonant frequency graphs.
AB - The objective of the present study was to estimate the influence of laser shock peening on the fatigue properties of AA2024-T3 specimens with a fastener hole and to investigate the possibility to heal the initial cracks in such specimens. Fatigue cracks of different lengths were introduced in the specimens with a fastener hole before applying laser shock peening. Deep compressive residual stresses, characterized by the hole drilling method, were generated into the specimens by applying laser shock peening on both sides. Subsequently, the specimens were subjected to fatigue tests. The results show that laser shock peening has a positive effect regarding the fatigue life improvement in the specimens with a fastener hole. In addition, laser shock peening leads to a healing effect on fatigue cracks. The efficiency of this effect depends on the initial crack length. The effect of laser shock peening on the fatigue life periods was determined by using resonant frequency graphs.
KW - Engineering
KW - AA2024-T3
KW - Fastener holes
KW - Fatigue cracks
KW - Laser shock peening
UR - http://www.scopus.com/inward/record.url?scp=85083786428&partnerID=8YFLogxK
U2 - 10.3390/met10040495
DO - 10.3390/met10040495
M3 - Journal articles
AN - SCOPUS:85083786428
VL - 10
JO - Metals
JF - Metals
SN - 2075-4701
IS - 4
M1 - 495
ER -