Cracking Failure Analysis of T-type Welded Tee in Waste Heat Boiler

DOI

10.2991/icmea-16.2016.71How to use a DOI?

Keywords

T-type welded tee, fracture mechanics, stress intensity factor, finite element analysis.

Abstract

In order to solve the crack problem of T-shaped welded tee in waste heat boiler of a LNG power plant, this paper proposed using the principle of fracture mechanics to analyze propagating crack quantitatively. Firstly, the stress distribution of T-shape welded pipe without structure default was analyzed. Based on the results of the analysis, the intensity factors of T-type welded pipe with different feature(such as location, length, depth, and so on) were calculated. The results show that both the length and the depth of the crack affect the stress intensity factor value. The surface crack is more dangerous than the buried depth crack. It was difficult to get stress intensity factor of the T-type welded pipe in engineering .The results discussed in this paper are of great significance not only for the maintenance of pipelines, but also for other engineering.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhen CHEN
AU  - Xue-Qing LIU
AU  - Kui WANG
AU  - Lu-Yi LU
AU  - Qing-Ren WANG
PY  - 2016/12
DA  - 2016/12
TI  - Cracking Failure Analysis of T-type Welded Tee in Waste Heat Boiler
BT  - Proceedings of the 3rd International Conference on Material Engineering and Application (ICMEA 2016)
PB  - Atlantis Press
SP  - 427
EP  - 432
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmea-16.2016.71
DO  - 10.2991/icmea-16.2016.71
ID  - CHEN2016/12
ER  -