Fatigue strength improvement of an aluminum alloy with a cracklike surface defect using shot peening and cavitation peening

(چکیده مقاله) :
Abstract :

The effects of shot peening (SP) and cavitation peening (CP) on the bending fatigue strength of
the 7075 aluminum alloy with a crack-like surface defect were investigated. Test specimens
containing a small semicircular slit were subjected to SP and CP. Bending fatigue tests were
conducted on the specimens to determine the fatigue strength and critical depth (ac) of the
semicircular slit that can be rendered harmless by peening. The results indicated that fatigue
strengths increased by peening and that semicircular slits less than 0.1 and 0.2 mm in depth were
rendered harmless by SP and CP, respectively. The ac values estimated based on fracture mechanics were similar to experimental values, indicating that ac was affected by the distribution of
the compressive residual stress induced by peening

(توضیحات تکمیلی) :

(توضیحات تکمیلی) :
Description :

مقاله ISI انگلیسی اصلی
سال انتشار:2018
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 11 صفحه


Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI سال انتشار2018 \ Koji Takahashia,⁎ , Hiroko Osedoa , Takaya Suzukia , Shinsaku Fukudab
Sent date(تاریخ ارسال) : 1397/11/28  |   2/17/2019
Number of visits(تعداد بازدید): 715
Key words (کلمات کلیدی): Cavitation peening Shot peening Fatigue strength Surface defect Aluminum alloy
Number of pages(تعداد صفحات) : 11
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