Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Fundamental Study on Degradation Evaluation of Marine Diesel Engine Exhaust Valve by Time-frequency Analysis Method (II)

시간-주파수 해석법을 이용한 선박용 디젤엔진 배기밸브의 열화도 평가에 관한 기초적 연구 (II)

  • 김현수 (부경대학교 대학원 재료공학과) ;
  • 심규현 (부산해사고등학교) ;
  • 안석환 (부경대학교 기계공학부) ;
  • 남기우 (부경대학교 재료공학부)
  • Published : 2000.11.01
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Abstract

The ultrasonic method, which is well known as nondestructive test method, is widely used to evaluate the material damage due to degradation. However, this method is just used for measuring the crack size and the thickness loss of the tube. The purpose of this study is to investigate the application of the ultrasonic technique for the evaluation of marine diesel engine exhaust valve and to suggest the correlation between the ultrasonic characteristics and valve degradation. From the evaluation of the results obtained, the technique of using the ultrasonic property was founds to be a efficient method to degree of marine diesel engine exhaust valve by nondestructive test.

Keywords

References

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