13th International Conference on Fracture June 16–21, 2013, Beijing, China -11- [5] Kiefner JF, Alexander CR, Fowler JR. Repair of Dents Containing Minor Scratches[C]. The 9th Symposium on Line Pipe Research. Houston: American Gas Association, 5:1-3. [6] Chen M B, Wang R. Fatigue Crack Propagation of X60 Pipeline Steel after Pre-tension Deformation [J]. Material for mechanical engineering, 8 (7): 18-20. [7] Diao S, Feng Y R, Zhuang C J, et al. Study on the Fatigue Properties of Oil Gas Pipeline and Its Prediction of Service Life [J].China safty science jurnal, 18 (1): 123-130. [8] Liu W J, Chen Y F, Lu M X. Effect of overload on fatigue crack growth rate for X52 pipeline steel [J]. Transaction of material and heattreatment, 2008, 29 (4): 123-126．
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