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

  • 제32권11호
  • /
  • Pages.1028-1034
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  • 2008
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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배기계 용접이음의 고온피로강도

High Temperature Fatigue Strength of the Welded Joint in Exhaust System

  • 주석재 (울산대학교 기계자동차공학부) ;
  • 이한용 (울산대학교 대학원 기계공학과) ;
  • 남궁규완 (울산대학교 기계자동차공학부)
  • 발행 : 2008.11.01
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초록

The exhaust systems are usually subjected to vibration or shock at high temperatures. The high temperature fatigue tests of the exhaust systems are rarely performed in domestic industries due to limited number of test facility and high test costs. In this paper, the high temperature fatigue test of some part of the exhaust system, not the whole system, is carried out. The resonator located at the central range is heated in the cylindrical electric furnace and the alternating load is applied on the end of the pipe welded to the resonator. The high temperature fatigue strength of the welded joint is obtained. The location of the fatigue crack is different to that in room temperature.

키워드

참고문헌

  1. Chu, Seok-Jae, 2004, "Development of Vibration Fatigue Analysis Method for Automobile Exhaust Systems," Research Project Report, Univ. of Ulsan Regional Research Center
  2. ASM International, 1996, ASM Speciality Handbook, Stainless Steels, pp. 505~525
  3. Lee, Keum-Oh, Yoon, Samson, Hong, Seong- Gu, Kim, Bong-Soo and Lee, Soon-Bok, 2004, "Low Cycle Fatigue Behavior of 429EM Stainless Steel at Elevated Temperature," Trans. of the KSME(A), Vol. 28, No. 4, pp. 427~434 https://doi.org/10.3795/KSME-A.2004.28.4.427
  4. Mannan, S. L. and Valsan, M., 2006, "High-Temperature Low Cycle Fatigue, Creep–Fatigue and Thermomechanical Fatigue of Steels and Their Welds," International Journal of Mechanical Sciences, Vol. 48, pp. 160~175 https://doi.org/10.1016/j.ijmecsci.2005.08.004
  5. Chu, Seok-Jae, Lee, Han-Yong, Kim, Chung-Kwan and Lee, Gwang-Hoo, 2007, "The High-Temperature Strain Measurements Using the "Capsule Gage," 2007 Fall Conference of the KSME, pp. 625~630