Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Forensic Engineering Study on Damage Assessment of the Damage to the Internal Parts of a Vehicle Involved in a Fire Accident

차량 화재의 기계 부품 손상 평가에 관한 법공학적 연구

  • Published : 2010.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

Forensic engineering is the area of expertise of those qualified to serve as engineering experts in courts of law or arbitration proceedings. Especially failure of internal parts during vehicle fire accidents causing injuries and damage to property almost always generates conflict between the automaker and customer. Hence, the investigation of such events generally involves an engineering analysis. One of the possible reasons for such accidents caused by vehicle fire is the failure of the piston and connecting rod. By formal inspections and engineering tests, this study shows the results of investigation and the cause of failure of the mechanical parts. For this purpose the failure mechanism is analyzed by using fractography methods and by applying an instrumented indentation technique to compare the material properties of the reference part with those of the malfunctioning part.

차량화재는 엔진과열, 이상연료 주입, 냉각수 부재 등 다양한 원인에 의해 발생할 수 있고 발생 후 연소시간이 매우 짧아 전소 후에야 소화되는 특징을 가진다. 이러한 차량화재는 인명손실보다는 화재확대로 인해 발생장소에 따라 큰 물적 피해를 가져올 수 있어 정확한 원인규명이 이루어져야 책임소재에 관한 분쟁 및 제조사 품질 등의 문제를 해결할 수 있다. 특히 기계부품 파손으로 차량화재가 발생한 경우는 제조사의 생산품 전반에 걸친 품질 및 차량 안전성 문제와 관련이 있으므로 유사 사고가 다시 발생할 수 있는 점이 내재되어 있어 그 심각성은 매우 크다고 할 수 있다. 본 연구에서는 차량 부품의 파손형태 검사 및 재료 물성평가 등을 통해 부품파손에 의한 차량화재 사고에 대한 정확한 원인을 규명함으로써 동일 형태의 차량 안전사고 예방에 기여하고자 한다.

Keywords

References

  1. Sam, B., 2007, “Forensic Engineering:Reduction of Risk and Improving Technology, ” Engineering Failure Analysis, Vol. 14, pp. 1019-1037. https://doi.org/10.1016/j.engfailanal.2006.11.065
  2. Brian, H., Mohamed, T. K., 2007, “Non-Destructive Testing Techniques for the Forensic Engineering Investigation of Reinforced Concrete Buildings,” Forensic Science International, Vol. 167, pp. 167-172. https://doi.org/10.1016/j.forsciint.2006.06.065
  3. Ding, Y., Wang, Y., Zhang, Y., Paulini, P., 2009, “Investigation of the Stress and Strain State of Clay Pipes Under Fire Condition,” CERAMICS INTERNATIONAL, Vol. 35, pp. 63-67. https://doi.org/10.1016/j.ceramint.2007.09.112
  4. Zhiwei, Y., Xiaolei X., Hongxin D., 2007, “Failure Analysis of a Diesel Engine Piston-Pin,” Engineering Failure Analysis, Vol. 14, pp. 110-117. https://doi.org/10.1016/j.engfailanal.2005.12.004
  5. Cerrini, A., Beretta S., 2006, “Failure Investigation and Design Improvements of Al7075 Piston for Hydraulic Actuators,” Engineering Failure Analysis, Vol. 13, pp. 18-31. https://doi.org/10.1016/j.engfailanal.2004.12.026
  6. Kim, J. H., 2004, “Research of Fracture Analysis by Fractographical Method, ” KSHT, Vol. 17, No. 4, pp. 254-262.
  7. Han, C. S., 2007, “The Basis and Technique of Fractography, ” KSHT, Vol. 20, No. 2, pp. 98-104.
  8. Kim, K. H., Choi, Y., Kim, S. H., Lee, J. S., Kwon, D. I., 2005, “Application of Instrumented Indentation Technique for Nondestructive/Mechanical Properties Measurement of In-service, Components and Materials, ” Spring conference of KSME, pp. 336 -343.
  9. Kim, S. H., Choi, Y., Kwon, D. I., 2004, “Determination of Brinell Hardness through Instumented Indentation Test without Observation of Residual Indent, ” KSME, Vol. 28, No. 5, pp. 578-585.
  10. Jeon, E. C., Kwon, D. I., Park, J. S., 2002, “The Optimization of Advanced Indentation Test for Tensile Properties Derivation, ” Spring conference of KSME, pp. 355-360.

Cited by

  1. A Case Analysis of a Car Fire that Broke Out due to Fuel Leakage from an Injector vol.18, pp.5, 2018, https://doi.org/10.9798/KOSHAM.2018.18.5.137