کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7172417 | 1463773 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fatigue strength experiments of corroded small scale steel specimens
ترجمه فارسی عنوان
آزمایش های قدرت خستگی از نمونه های فولادی کوچک در اثر خوردگی
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کلمات کلیدی
زندگی خستگی تست خستگی، خوردگی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
The objective of this work is to analyze the fatigue strength of small scale corroded steel specimens. The specimens were cut from a box girder, which was initially corroded in real sea water conditions. The surface of 11 corroded specimens was analyzed applying photogrammetry techniques and a description of an idealized corroded surface was established. The non-corroded specimens are identified as FAT 86 category but the fatigue test demonstrated that due to the severe corrosion degradation the experimental fatigue results of the corroded specimens are located above the fatigue design category FAT 50 and below FAT 100 referring to the nominal stress approach. The regression analysis of fatigue test results leads to m = 3.094 and ÎÏ97.7%,m=3=64.95MPa. Fatigue assessment of crack propagation on a pit like crack flow based on a failure assessment diagram was performed. The admissible initial idealized flow defect has been defined, which matches the fatigue life achieved by the fatigue test for different load categories and corrosion degradation level.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 59, February 2014, Pages 137-144
Journal: International Journal of Fatigue - Volume 59, February 2014, Pages 137-144
نویسندگان
Y. Garbatov, C. Guedes Soares, J. Parunov,