Browse > Article
http://dx.doi.org/10.14346/JKOSOS.2017.32.5.1

An Empirical Study on the Bursting Properties According to Heat Treatment Condition of the CNG Pressure Vessel  

Kim, Eui Soo (School of Industrial Management and Safety Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korean Society of Safety / v.32, no.5, 2017 , pp. 1-7 More about this Journal
Abstract
Forensic Engineering is the art and science of professionals qualified to serve as engineering experts in courts of law or in arbitration proceedings. Buses using compressed natural gas (CNG) trend to be extended in use internationally as optimal counterplan for reducing discharge gas of light oil due to high concern about environment. However, CNG buses is equipped with composite pressure vessels (CPVs); since the CPVs contain compressed natural gas, the risks in the case of accident is very high. In this study, the bursting test for the pressure vessel depending on the heat treatment conditions of the vessel in which the actual ruptured accident occurred, after the bursting test, the fracture pattern analysis had performed. The mechanical materials properties test using Instrumented Indentation Test had performed to confirm the mechanical properties for each heat treatment cases. Also, the fractography analysis and metallographic analysis had performed to find out the difference of each heat treatment case. By comparing normal vessel with abnormal vessel which have defect of heat treatment conditions in term of the bursting patterns and characteristics of containers using various forensic engineering methods, especially, it is possible to understand how important the heat treatment process is in the high pressure vessel unlike any product.
Keywords
pressure vessel; bursting test; heat treatment; fractography; metallography; accidentology;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 E. S. Kim, J. H. Kim, B. S. Moon, J. M. Goh, "Study on the Structure Safety Evaluation for Pressure Vessel of the CNG Vehicle Using F.E.M.," Advanced Materials Research, Vol. 569, pp. 598-602, 2012.   DOI
2 E. S. Kim, J. H. Kim, Y. S. Park, C. J. Choi, "Development of an Automated Design System of CNG Composite Vessel using Steel Liner Manufactured by D.D.I Process," KSPE, Vol. 20, No. 1, pp. 205-213, 2003.
3 E.S. Kim, N.K. Park, Y.H. Kim, "A Forensic Engineering Study on Bursting Accident of Composite Pressure Vessel in CNG bus," KOSOS, Vol. 23, No. 5,pp. 15-21, 2008.
4 E.S. Kim, "Forensic Engineering Study on Damage Assessment of Pressure Vessel by Explosion," KSME, Vol. 35, No. 4, pp. 439-445, 2011.
5 K. H. Kim, Y. Choi, S. H. Kim, J. S. Lee, D. I. Kwon, "Application of Instrumented Indentation Technique for Nondestructive/Mechanical Properties Measurement of In-Service, Components and Materials," Proceedings of the KSME Spring Annual Meeting, pp. 336-343, 2005.
6 E. E. Underwood, K. Banerji, "Fractals in Fractography," Materials Science and Engineering, Vol. 80, No. 1, pp. 1-14, 1986.   DOI
7 R. Wouters, L. Froyen, "Scanning Electron Microscope Fractography in Failure Analysis of Steels," Materials Characterization, Vol. 36 No. 4-5, pp. 357-364, 1996.   DOI
8 W. Smith, "Structures an Properties of Engineering Alloys 2nd Edition," McGraw-Hill, 1993.
9 Y.H. Park, "The Evaluation on the Durability and Safety of Fuel Cylinders for CNG Buses," J. Korean Soc. Saf., Vol. 19, No. 1,pp. 6-11, 2004.