한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)
- 제15권4호
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- Pages.44-50
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- 1998
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
컴퓨터 화상처리 기법을 이용한 고온 구조물의 수명평가 연구
A Study on Life Assessment for In-Service High-Temperature Components Using Image Processing Technique
초록
The creep life fraction can be evaluated by the degree of grain deformation since the grain of Cr-Mo base metal deforms in the direction of stress. The grain deformation method using image processing technique is developed for life assessment of in-service high-temperature components. The new assessment model of grain deformation method is presented to apply to in-service components and is verified by interrupted creep test for ex-serviced material of 1Cr-0.5Mo steel. The proposed model, which is irrespective of stress direction, is to evaluate mean of the absolute deviation for the measured ratios which are diametrical maximum to minimum dimensions for grains.
키워드