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

The Korean Society of Mechanical Engineers (대한기계학회)
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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
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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.

내환경 시험시 시험물체가 요구시험온도가 되게 온도시험조를 가열 또는 냉각하는 계단형 온도시험 프로파일에서 적정 촉진온도 유지시간을 예측하는 집중용량법에 의한 새로운 해석적 방법을 제안하였다. 해석은 주어진 온도시험조건에 대해 시험시간을 줄이고 에너지를 절약하는 촉진시간이 존재함을 보여주고 있다. 이론결과는 작업소재로 강을 사용한 몇 가지 실험결과와 비교적 잘 부합하고 있다. 제안된 적정촉진시간은 동일재료에 대해 시편의 질량/표면적비와 근사적으로 비례한다.

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References

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