کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7171228 | 1463706 | 2018 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Probabilistic fatigue assessment for high-speed railway axles due to foreign object damages
ترجمه فارسی عنوان
ارزیابی خستگی احتمالی برای محورهای راه آهن با سرعت بالا با توجه به آسیب های جسمی خارجی
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
Various surface defects of high-speed railway lightweight hollow axles made of alloy steel were identified carefully for assessing its operation safety and reliability. Three types of foreign object damages (FOD) from compressed-gas gun device were defined as the corner, edge and plane defects in terms of defect geometry, respectively. The fatigue probabilistic S-N (P-S-N) curves and fatigue limits were acquired for smoothed and FOD-affected specimens. In view of the variations of size and roughness between the full-scale axles and specimens, the fatigue properties with three defect types were then modified for full-scale axles. The probabilistic Kitagawa-Takahashi diagram widely used for assessing the FOD in aero-engine was well transferred to the damaged railway axles. The fatigue limits of an FOD-affected axle with 95% confidence level and 95% reliability level were evaluated to replace that of smoothed specimens, which was suggested to assess the reliability of a damaged axle at the presence of FOD generated at a prospective higher operation speed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 117, December 2018, Pages 90-100
Journal: International Journal of Fatigue - Volume 117, December 2018, Pages 90-100
نویسندگان
S.C. Wu, Z.W. Xu, G.Z. Kang, W.F. He,