Nozzle Condition Monitoring System for Abrasive Waterjet Process

연마재 워터젯을 위한 노즐상태 모니터링 시스템 설계

  • Kim, Jeong-Uk (Department of Control and Instrumentation Engineering, Pukyong National University) ;
  • Kim, Roh-Won (Korea Institute of Industrial Technology) ;
  • Kim, Chul-Min (Korea Institute of Industrial Technology) ;
  • Kim, Sung-Ryul (Korea Institute of Industrial Technology) ;
  • Kim, Hyun-Hee (Industrial Sciences & Technology Institute) ;
  • Lee, Kyung-Chang (Department of Control and Instrumentation Engineering, Pukyong National University)
  • 김정욱 (부경대학교 제어계측공학과) ;
  • 김노원 (한국생산기술연구원) ;
  • 김철민 (한국생산기술연구원) ;
  • 김성렬 (한국생산기술연구원) ;
  • 김현희 (부경대학교 산업과학기술연구소) ;
  • 이경창 (부경대학교 제어계측공학과)
  • Received : 2020.08.16
  • Accepted : 2020.09.04
  • Published : 2020.10.31


In recent, the machining of difficult-to-cut materials such as titanium alloys, stainless steel, Inconel, ceramic, glass, and carbon fiber reinforced plastics (CFRP) used in aerospace, automobile, medical industry is actively researched. Abrasive waterjet is a non-traditional processing method in which ultra-high pressure water and abrasive particles are mixed in a mixing chamber and shoot out jet through a nozzle, and removed by erosion due to collision with a material. In particular, the nozzle of the abrasive waterjet is one of the most important parts that affect the machining quality as with a cutting tool in general machining. It is very important to monitor the condition of the nozzle because the workpiece is uncut or the surface quality deteriorates due to wear, expanding of the bore, damage of the nozzle and clogging of the abrasive, etc. Therefore, in this paper, we propose a monitoring system based on Acoustic Emission(AE) sensor that can detect nozzle condition in real time during AWJ processing.


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