Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Development of New Cavitation Erosion Test Method for Analyzing the Durability of Erosion Resistance Paint

내침식페인트 성능 판별에 적합한 새로운 캐비테이션 침식시험기법 개발

  • Paik, Bu-Geun (Maritime & Ocean Engineering Research Institute, KORDI) ;
  • Kim, Kyung-Youl (Maritime & Ocean Engineering Research Institute, KORDI) ;
  • Kim, Ki-Sup (Maritime & Ocean Engineering Research Institute, KORDI) ;
  • Kim, Tae-Gyu (Daewoo Shipbuilidng & Marine Engineering Co., Ltd.) ;
  • Kim, Kyung-Rae (Daewoo Shipbuilidng & Marine Engineering Co., Ltd.) ;
  • Jang, Young-Hun (Daewoo Shipbuilidng & Marine Engineering Co., Ltd.) ;
  • Lee, Sang-Uk (Daewoo Shipbuilidng & Marine Engineering Co., Ltd.)
  • 백부근 (한국해양연구원 해양시스템안전연구소) ;
  • 김경열 (한국해양연구원 해양시스템안전연구소) ;
  • 김기섭 (한국해양연구원 해양시스템안전연구소) ;
  • 김태규 (대우조선해양(주)) ;
  • 김경래 (대우조선해양(주)) ;
  • 장영훈 (대우조선해양(주)) ;
  • 이상욱 (대우조선해양(주))
  • Published : 2010.04.20
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Abstract

The very erosive cavitation is simulated by an inclined propeller dynamometer in the medium-size cavitation tunnel of MOERI. The inclined shaft for propeller makes strong cavitaion, which occurs around the root of a propeller blade. The cavitation begins at the leading edge of the propeller and contracted toward the trailing edge through the reentrant jet action. The cavity focused on the region near the trailing edge collapsed over the blade surface. As the impact pressure by the cavitation collapsing is too strong, it can damage the blade surface in the form of pit. This cavitation impacts created by the collapsing process are similar to the full-scale ones and are different from those by other erosion test methods. The newly developed cavitation erosion test method can be applied to evaluate the materials such as metals, ceramics and coatings in terms of cavitation resistance.

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References

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