Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Weibull Statistical Analysis According to Vickers Indentation Load of Peened ZrO2 Composites Ceramics by Different Shot Size

크기가 다른 Shot에 의하여 Peening한 ZrO2 복합 세라믹스의 비커스 압입하중에 따른 와이블 통계 해석

  • Ahn, Seok Hwan (Dept. of Mechatronics, Jungwon Univ.) ;
  • Kim, Dae Sik (UR Interdisciplinary Program of Mechanical Engineering, Pukyong Nat'l Univ.) ;
  • Nam, Ki Woo (Dept. of Materials Science and Engineering, Pukyong Nat'l Univ.)
  • 안석환 (중원대학교 메카트로닉스학과) ;
  • 김대식 (부경대학교 학연협동기계공학) ;
  • 남기우 (부경대학교 재료공학과)
  • Received : 2016.01.19
  • Accepted : 2016.10.04
  • Published : 2016.12.01
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Abstract

In this study, the effects of shot peening (SP) on the Vickers hardness of $ZrO_2$ were studied. The size of the shot balls were ${\phi}180{\mu}m$ and ${\phi}300{\mu}m$. The Vickers hardness was measured using an indentation load of 98 N and 294 N. The Vickers hardness was evaluated using Weibull statistical analysis. The scale parameters were significantly evident from the indentation load of 98 N and the shot ball of ${\phi}180 {\mu}m$. Generally, the shape parameters were also evident from the small short ball (180sp). Thus, it is shown that the introduction of a compressive residual stress by SP is an effective technique for increasing the mechanical properties of $ZrO_2$.

본 연구는 $ZrO_2$의 비커스 경도에 대한 쇼트 피닝 효과를 연구하였다. 쇼트의 크기는 ${\phi}180{\mu}m$와 ${\phi}300{\mu}m$를 사용하여 피닝하였다. 비커스경도는 압입하중 98 N과 294 N으로 측정하였다. 비커스 경도는 와이블 통계 해석을 수행하여, 볼 크기 및 압압 하중에 따르는 영향을 평가하였다. 척도 파라메터는 98 N 압입 하중 및 ${\phi}180{\mu}m$ 쇼트 볼에서 크게 나타났다. 형상 파라메터도 대체적으로 작은 쇼트 볼(180sp)이 크게 나타났다. 이것으로부터 SP처리에 의한 압축 잔류 응력은 $ZrO_2$의 기계적 성질의 향상에 좋은 방법이다.

Keywords

References

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