کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6750535 | 1430682 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fatigue performance and evaluation of welded joints in steel truss bridges
ترجمه فارسی عنوان
عملکرد خستگی و ارزیابی اتصالات جوش در پلهای فولادی
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کلمات کلیدی
پل فولادی فولادی، مقاومت خستگی، درمان ضربه ی التراسونیک، مشخصات فیشینگ گوشه، ارزیابی خستگی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
While welded joints are extensively used in the connections of steel truss bridges, service life of the bridges is largely dependent on the fatigue resistance of the welded joints. Stress concentration and weld residual stress are two primary causes of fatigue damage in the welded joints. In this study, corner-fillet profile (CFP) and ultrasonic impact treatment (UIT) are used to improve the fatigue performance of the welded joints through relieving stress concentration and weld residual stresses, respectively. The fatigue resistance of welded joints is evaluated through experimentation. The results indicate that the use of CFP and/or UIT can alter the initiation location of fatigue crack. The fatigue resistance of welded joints was increased by 24% and 36% by using the CFP and UIT, respectively. The fatigue performance of welded joints was evaluated using three different methods, including the nominal stress method, effective notch stress method, and peak stress method. The peak stress method with a single fatigue resistance curve demonstrated the highest applicability and accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 148, September 2018, Pages 450-456
Journal: Journal of Constructional Steel Research - Volume 148, September 2018, Pages 450-456
نویسندگان
Chuang Cui, Qinghua Zhang, Yi Bao, Jiping Kang, Yizhi Bu,