Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Biaxial Fracture Behavior of Alumina Ceramics ; Thickness Effect on Ball-on-3-ball Test

시편 두께에 따른 알루미나 세라믹스의 이축 파괴 거동

  • 이홍림 (연세대학교 세라믹공학과) ;
  • 박성은 (연세대학교 세라믹공학과) ;
  • 이중현 (연세대학교 세라믹공학과)
  • Published : 1999.07.01
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Abstract

Biaxial fracture behavior of alumina specimens with the diameter of 20mm and four kinds of thickness of 1.9, 2.3, 2.6 and 2.8mm was studied by the ball-on-3-ball test and the fracture results were analyzed by he analysis of variance (ANOCA), The strength measured with the down speed prescribed in ASTM showed that the measured strength was not dependent on the thickness of the specimens. Equivalent radius and crack-braching number were observed to increase lineraly with the thickness of the specimens. The jog direction was observed to study the effect of grinding direction on surface flaws. It is though that the surface finishing with #600 grit diamond wheel did not affect the surface flaws of the specimens.

Keywords

References

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