| Issue |
MATEC Web Conf.
Volume 136, 2017
2017 2nd International Conference on Design, Mechanical and Material Engineering (D2ME 2017)
|
|
|---|---|---|
| Article Number | 01008 | |
| Number of page(s) | 5 | |
| Section | Chapter 1: Simulation | |
| DOI | https://doi.org/10.1051/matecconf/201713601008 | |
| Published online | 14 November 2017 | |
Fracture Analysis of CNG High Pressure Container using Fractography and Measurement of Property
Dept. of Safety Engineering, Korea National University of Transportation, Chungju-si, Chungbuk 27469, Korea
Bursting accidents of pressure containers due to design and manufacturing defects are frequently occurring. Due to high-pressure gas or harmful substances, when this vessel is fractured, it can lead to catastrophic disasters. Especially, in the event of bursting accident of composite pressure vessel for CNG bus, many unspecified people can be damaged. Most of the accidents were caused by problems in the manufacturing process. The manufacturing process for TYPE2 pressure vessel is very complicated such as three drawing processes, two ironing processes and one spinning process. In the middle of process, various heat treatments are performed for imparting toughness and removing residual stresses. It should cause a serious problem such as bursting and fragmentation of the pressure container due to defects of this process. In this research, the fracture cause of CNG vessel is evaluated through fractography and measuring material property using IIT and analysis of chemical composition.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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