한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제20권3호
  • /
  • Pages.82-88
  • /
  • 2003
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

초음파를 이용한 감자의 내부결함검사

Ultrasonic Inspection of Internal Defects of Potatoes

  • 김인훈 (한양대학교 대학원 정밀기계공학과) ;
  • 정규홍 (한양대학교 대학원 정밀기계공학과) ;
  • 장경영 (한양대학교 기계공학부) ;
  • 서륜 (충남대학교 대학원 농업기계공학과) ;
  • 김만수 (충남대학교 농업기계공학과)
  • 발행 : 2003.03.01
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초록

The nondestructive internal quality evaluation of agricultural products has been strongly required from the needs for individual inspection. Recently, the ultrasonic wave has been considered as a solution fur this problem, and an ultrasonic system was constructed for the ultrasonic NDE of fruits and vegetables in our previous work. In this paper, the practical applicability of our ultrasonic system is tested fur the inspection of internal defects (central cavity) in Atlantic potato. Sound speed and RMS of transmitted ultrasonic wave signal were measured and classification algorithm using 2 dimensional stochastic analysis. was presented. Experimental results showed greater value of sound speed and RMS (root mean square) of transmitted signal in normal samples than in abnormal samples with cavity. Also a stochastic method to distinguish normal and abnormal showed fault detection rate less than 5%.

키워드

참고문헌

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