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Fracture Mechanics Study on Wear Mechanism of Ceramics -Discussions on Experimental Results of Wear Test-

세라믹의 마멸기구에 관한 파괴역학적 연구 -마멸실험 결과의 고찰-

  • 김석삼 (경북대학교 공과대학 기계공학과) ;
  • 김재호 (경북대학교 공대 기계공학과)
  • Published : 1990.05.01

Abstract

Analytically induced wear mechanism of elastic body under Hertzian contact is applied in acutual wear test of ceramics. There are two types of wear in ceramics, a large scale wear and a small scale wear. The large scale wear is commensurable with Hertzian contact area and the small scale wear with real contact area. Nondimensional parameter, S$_{c}$, is introduced and fully examined to estimate or predict wear rate of ceramics. Ceramic wear for S$_{c}$.leq.0.8 is in small scale wear and for S$_{c}$;geq.1.6 in large scale wear. wear.