 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13288 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8164
|
| In English (Mech. Solids): | | 5124 |
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| Lin-Feng Li, Zhi-Peng Shi, Tai-Li Chen, An-Yong Qing, Hai-Yang Ma, Yi Wang, and Jiu-Lin Xiao, "Fatigue Test in Aviation Pipelines Typical Components and Minor Cracks Analysis," Mech. Solids. 60 (4), 3339-3349 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
4 |
Pages |
3339-3349 |
| DOI |
10.1134/S0025654425602046 |
| Title |
Fatigue Test in Aviation Pipelines Typical Components and Minor Cracks Analysis |
| Author(s) |
Lin-Feng Li (School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756 China;Chengdu Tianxiang Power Technology Research Institute Co., Ltd, Chengdu, 611093 China)
Zhi-Peng Shi (Chengdu Holy Industry (Group) Co., Ltd, Chengdu, 611093 China)
Tai-Li Chen (Chengdu Holy Industry (Group) Co., Ltd, Chengdu, 611093 China)
An-Yong Qing (School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756 China, qinganyong@tsinghua.org.cn)
Hai-Yang Ma (Chengdu Holy Industry (Group) Co., Ltd, Chengdu, 611093 China)
Yi Wang (Chengdu Tianxiang Power Technology Research Institute Co., Ltd, Chengdu, 611093 China)
Jiu-Lin Xiao (Chengdu Holy Industry (Group) Co., Ltd, Chengdu, 611093 China) |
| Abstract |
As requested in industry standards and the executable technical documents XX, the fatigue
performance of weld bead needs to be assessed during the assessment and verification procedure for
self-made pipeline components. The document stated that 5% decrease in resonance frequency indicates cracks appear in the pipeline components based on failure criterion. It was difficult to detect
cracks on the pipeline typical components with naked eyes after the experiment. More proof was
needed to confirm that the frequency decreasing was directly related to fatigue cracks, and the crack
appeared at the expected position. Therefore, fatigue performance assessment was conducted on a
batch of pipeline components, and the failed test pipeline was further analyzed. In the present work,
three perspectives, including structural simulation analysis, experimental verification, and microscopic fracture observation of 1Cr18Ni9Ti stainless steel pipeline components, were investigated.
It was demonstrated that the cracks were caused by fatigue vibration in a new perspective, and which
verified the effectiveness of the technical implementation documents. By the fracture surface analysis,
the characteristics of crack propagation alonged the grain boundaries and the propagation of secondary cracks were demonstrated, and the influence of the inhomogeneity of the microstructure in the
welding area on the crack propagation path was revealed. |
| Keywords |
Vibration Fatigue, Pipeline Components, Welds, Fracture Analysis, Crack Initiation |
| Received |
26 April 2025 | Revised |
03 June 2025 | Accepted |
11 June 2025 |
| Link to Fulltext |
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