کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7171932 | 1463748 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of cyclic stress intensity threshold on fatigue life scatter
ترجمه فارسی عنوان
تأثیر آستانه تنش سیکل بر پراکندگی خستگی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
Understanding factors that contribute to scatter in fatigue lives of metallic structures (particularly airframes) subjected to identical spectrum is critical to maintaining safety and optimising designs. This paper first briefly discusses the sources of scatter, and then concentrates on the effect of variations in the “cyclic stress intensity threshold” (ÎKthr) on fatigue crack growth. It shows that a version of the NASGRO equation can be used to account for the crack growth scatter seen in a number of classical fatigue experiments by accounting for variations in ÎKthr. This is an important outcome for safety and is particularly useful when considering lead cracks for which ÎKthr is small (approaching zero) as these cracks appear to commence growing soon after introduction into service.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 82, Part 3, January 2016, Pages 748-756
Journal: International Journal of Fatigue - Volume 82, Part 3, January 2016, Pages 748-756
نویسندگان
L. Molent, R. Jones,