کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
774976 1463751 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fretting fatigue tests on shrink-fit specimens and investigations into the strength enhancement induced by deep rolling
ترجمه فارسی عنوان
آزمایش خستگی فتطری در نمونه های کوچک و بررسی در افزایش قدرت ناشی از نورد عمیق
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Shrink-fit fretting fatigue tests with round geometry and bending cyclic loading.
• Experimental evidence of the enhancement effect produced by deep rolling.
• Crack arrest approach not adequate especially for deep rolled closed cracks.
• Shallow crack initiation evidence and correlation to the shear stress amplitude.
• Prediction with a multiaxial critical plane fatigue model based on shear stress.

The shrink-fit connection undergoes fretting fatigue at the edge of the contact, where both stress concentration and micro-slip take place. A fretting test set-up with a round-shaped specimen is proposed that eliminates lateral edge contact and misalignment, and is also appropriate for deep rolling. Comparative experiments showed a notable strength improvement, induced by deep rolling, along with the beneficial effect of friction reduction due to lubrication. Multiple cracks with clear shallow paths were evident after SEM observation, thus the maximum shear stress amplitude was assumed as a correlating parameter, while the crack arrest was inappropriate especially for deep rolled specimens.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 81, December 2015, Pages 179–190
نویسندگان
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