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A Study on the Promotion Time in Environmental Temperature Test

내환경 온도시험의 촉진시간에 관한 연구

  • Han, Chul-Ho (Dept. of Mechanical Engineering, Kumoh Nat'l Inst. Technology(KIT)) ;
  • Kim, Kyoung-Hoon (Dept. of Mechanical Engineering, Kumoh Nat'l Inst. Technology(KIT)) ;
  • Kim, Hyoung-Eui (Reliability Assesment Center, Korea Inst. of Machinery and Materials(KIMM))
  • 한철호 (금오공과대학교 기계공학부) ;
  • 김경훈 (금오공과대학교 기계공학부) ;
  • 김형의 (한국기계연구원 기계류부품 신뢰성평가센터)
  • Received : 2010.08.30
  • Accepted : 2011.01.05
  • Published : 2011.03.01

Abstract

A new method to predict the proper promotion time on the near-step-temperature test profile when heating or cooling the test-piece in a test chamber to the test temperature for environmental tests has been proposed by using the lumped analysis. For a given test condition the analysis shows the existence of a promotion time that reduces the testing time and saves energy. The theoretical results are in reasonably good agreements with experimental results for steel specimens. The suggested promotion time is approximately proportional to the mass/surface area of the test-piece for a given material.

Keywords

Environmental Test;High & Low Temperature Test;Lumped Analysis;Temperature Promotion Time

References

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