A Study on the Improvement of a Damageability and Repairability by Improving Mounting Structure of a Bumper for Passenger Cars

범퍼체결구조 개선을 통한 손상성.수리성 향상방안에 관한 연구

  • Kim, Ji-Won (Department of Mechanical Engineering, Hanyang University) ;
  • Park, In-Song (Korea Insurance Development Institute / Korea Automobile Research & Technical Center) ;
  • Lee, Chang-Sik (Department of Mechanical Engineering, Hanyang University)
  • 김지원 (한양대학교 기계공학부) ;
  • 박인송 (보험개발원 자동차기술연구소) ;
  • 이창식 (한양대학교 기계공학부)
  • Published : 2010.01.01


The purpose of this study is to analyze the bumper mounting structure of passenger vehicles at low speed collision. In order to improve the repairability and damageability of the vehicle, the low speed crash tests of RCAR(Research Council for Automobile Repairs) standard(front & rear 15km/h 40% offset crash test) were carried out for analysis of 3 different types of bumper mounting structures. The results of experiments show that the impact energy absorbing ability of bumper stay with rectangular crash box type vehicle which is inserted into the bumper rail was superior to another two different bumper mounting structures that are applied to many passenger vehicles. In this thesis, well designed bumper mounting structure such as rectangular crash box type can enhance the safety of occupants as well as contribute to reduce repair cost at low collision accident by improving repairability and damageability of vehicle.


  1. KIDI KART, 2006, "Fy 2005 Fact Book Of Automobile Insurance Repair Cost," pp. 3-10
  2. Kim, J.W., 2000, "A Study on the Verification of a Bumper Mounting Characteristics for Improving a Repairability and Damageability," Hanyang Univ., pp. 22-54
  3. Chun, Y.B. and Lee, C.W., 2005, "Case Study on Bumper Stay for Damageability & Repairability Improvement," KSAE, Vol. 13, No. 2, pp. 157-161
  4. Kim, G.H., Lee, O.S., Park, I.S., Kim, J.W., Chung, T.Y., Heo, S.J.. 1998, “Damageability, Repairability and Safety of Automobile at Low Speed Frontal and Rear Crash Test,” KSAE, Vol.2, pp. 789-794
  5. Hosseinzadeh, R., Maahmood M. Shokriehh, Larry B. Lessard, 2005, "Parametric Study Of Automotive Composite Bumper Beams Subjected To Low-Velocity Impacts," Composite Structures, Vol 68, pp.419-427
  6. M.M.Davoodi, S.M.Sapuan, R.Yunus, 2008, "Material & Design," Vol. 29, pp. 1447-1452
  7. Schuster, P.J., 2006, "Currents Trends In Bumper Design For Pedestrian Impact," SAE paper 2006-01-0464
  8. KIDI KART, 1998, "Test Report On Damageability & Repairability By Low Speed Crash Test," Vol 1-3
  9. KIDI KART, 2005, "Test Report On Damageability & Repairability By Low Speed Crash Test," Vol 4-6
  10. KIDI KART, 2000, "Test Report On Damageability & Repairability By Low Speed Crash Test," Vol 7-8
  11. Oh, H.S., 1996 "Research for Low Speed Crash Test," KIDI KART, pp.33-35
  12. Kim, J.W., 2009, "A Study on the Improvement Of Damageability, Repairability And Safety According To The Bumper And Crash Box Structure Of Passenger Car At Low Speed Collision," Hanyang Univ., pp. 69-76