한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제9권4호
  • /
  • Pages.14-25
  • /
  • 2010
  • /
  • 1598-6721(pISSN)
  • /
  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
권호 표지

프레스 공정에서의 불량품 자동 검출을 위한 다양한 음향방출 신호의 분석

Analysis of Various Acoustic Emission Signal for the Automatic Detection of Defective Manufactures in Press Process

  • 김동훈 (울산대학교 대학원 기계자동차공학과) ;
  • 박세명 (울산대학교 대학원 기계자동차공학과) ;
  • 이원규 (울산대학교 대학원 기계자동차공학과)
  • 투고 : 2010.05.07
  • 심사 : 2010.08.26
  • 발행 : 2010.08.30
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초록

Small cracks or chips of a product appear very frequently in the course of continuous production of an automatic press process system. These phenomena became the cause of not only defective product but also damage of a press mold. In order to solve this problem AE(Acoustic emission) system was introduced. AE system was expected to be very effective to real time detection of the defective product and for the prevention of the damage in the press molds In this study, for the pick and analysis of AE signals generated from the press process, AE sensors/pre-amplifier/analysis and processing board were used as frequently found in the other similar cases. For the analysis and processing the AE signals picked in real time from the normal or the detective products, specialized software called AE-win(software for processing AE signal from Physical Acoustics Corporation) was used. As a result of this work it was conformed that intensity and shape of the various AE signals differ depending on the weight of the press and thickness of sheet and process type.

키워드

참고문헌

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