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Assessment of different methods for fatigue life prediction of steel in rotating bending and axial loading | ||
| Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
| مقاله 7، دوره 6، شماره 2 - شماره پیاپی 12، شهریور 2017، صفحه 57-68 اصل مقاله (1.31 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jcarme.2017.597 | ||
| نویسندگان | ||
| J. Amirian1؛ H. Safari2؛ M. Shirani* 2؛ M. Moradi1؛ S. Shabani2 | ||
| 1Department of Mechanical Engineering, Isfahan University of Technology, 84156-83111, Iran | ||
| 2Subsea Research and Development Center, Isfahan University of Technology, 84156-83111, Iran | ||
| تاریخ دریافت: 04 بهمن 1394، تاریخ بازنگری: 22 فروردین 1395، تاریخ پذیرش: 04 اردیبهشت 1395 | ||
| چکیده | ||
| Generally, fatigue failure in an element happens at the notch on a surface where the stress level rises because of the stress concentration effect. The present paper investigates the effect of a notch on the fatigue life of the HSLA100 (high strength low alloy) steel which is widely applicable in the marine industry. Tensile test was conducted on specimens and mechanical properties were obtained. Rotating bending and axial fatigue tests were performed at room temperature on smooth and notched specimens and S-N curves were obtained. Using the obtained S-N curve for smooth specimens, the fatigue strength factor for the notched specimens were predicted by Weibull's weakest-link, Peterson, Neuber, stress gradient and critical distance methods and compared with experimental results. It was found that the critical distance and also Weibull’s weakest-link methods have the best agreement with experimental results. | ||
| کلیدواژه‌ها | ||
| Fatigue failure؛ S-N curve؛ Rotating bending | ||
| مراجع | ||
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