Verification of Fatigue Life Prediction results for notched specimens with short crack propagation phase

1981 ◽  
Vol 12 (8) ◽  
pp. 272-281
Author(s):  
A. Buch
Keyword(s):  
Fatigue Life ◽  
Crack Propagation ◽  
Life Prediction ◽  
Short Crack ◽  
Fatigue Life Prediction ◽  
Notched Specimens

Short Crack Propagation Law and Fatigue Life Prediction Method for Structural Alloy Steel

2011 ◽  
Vol 197-198 ◽  
pp. 1400-1405
Author(s):  
Zan Zhi Wang
Keyword(s):  
Fatigue Life ◽  
Crack Initiation ◽  
Crack Propagation ◽  
Life Prediction ◽  
Prediction Method ◽  
Short Crack ◽  
Fatigue Life Prediction ◽  
Structural Alloy ◽  
Propagation Law ◽  
Alloy Steels

35CrMo and 42CrMo are the two main structural alloy steels in China, and are widely used in making important structural components subjected to heavy loads. In order to search after their fatigue properties under cyclic loads, 33 specimens were tested, under different stress level and different stress ratio from each other, to observe their crack initiation lives and the failure lives, together with the growing short crack lengths at various cycles. All tests were conducted using the MTS 810-22 material testing system. Based on the results from the tests, the relationships between the maximum stress range at crack tip and the number of cycles prior to crack initiation were determined, and in the meanwhile, the small crack propagation laws and the threshold stresses for fatigue crack initiation were obtained. In the end, the fatigue life prediction method for the two structural alloy steels was carried out.

scholarly journals A Study of Crack Propagation and Fatigue Life Prediction on Welded Joints of Ship Structure(I)

2008 ◽  
Vol 45 (6) ◽  
pp. 669-678 ◽  
Author(s):  
Kyung-Su Kim ◽  
Hisashi Ito ◽  
Yong-Seok Seo ◽  
Beam-Sean Jang ◽  
Beam-Il Kim ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Crack Propagation ◽  
Welded Joints ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Ship Structure

Fatigue life prediction of nickel-based GH4169 alloy on the basis of a multi-scale crack propagation approach

2018 ◽  
Vol 199 ◽  
pp. 29-40 ◽  
Author(s):  
Shen Ye ◽  
Cheng-Cheng Zhang ◽  
Peng-Yue Zhang ◽  
Xian-Cheng Zhang ◽  
Shan-Tung Tu ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Crack Propagation ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Multi Scale ◽  
Gh4169 Alloy

Study on the Test of Fatigue Life Prediction for X80 Line Pipe

2014 ◽  
Vol 692 ◽  
pp. 387-390
Author(s):  
Qiu Rong Ma ◽  
Yang Li ◽  
Kun Yang
Keyword(s):  
Fatigue Crack ◽  
Fatigue Life ◽  
Crack Propagation ◽  
Life Prediction ◽  
Safety Margin ◽  
Fatigue Life Prediction ◽  
Test Results ◽  
Line Pipe ◽  
Work Condition ◽  
Submerged Arc

This paper researched the test of fatigue crack propagation of grade X80 submerged arc welded pipes. According to the test results, analyzed and calculated the fatigue life of submerged arc welded pipes for X80 with half elliptical crack defects at the simulated work condition of shutdown. On a single simulated work condition, the fatigue life of submerged arc welded pipes for X80 with Ф1219×22.0mm is 62 years, which had enough safety margin for fatigue life.

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