Characteristics of crack growth of zirconia composites by shot peening
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The effect of shot peening on the crack propagation and bending strength of zirconia (ZrO2) composites was investigated. Shotpeening was carried out on ZrO2 composites using Yttrium stabilized ZrO2 beads. It was found that shot peening couldintroduce compressive residual stress to the surface of ZrO2 composites. In Z, ZS, and ZST specimens, the shot peeningtreatment suppressed crack growth caused by the micro-crack introduced to the surface and by the residual stress, while thebending strength of the cracked specimen was improved.
Abstract
The effect of shot peening on the crack propagation and bending strength of zirconia (ZrO2) composites was investigated. Shotpeening was carried out on ZrO2 composites using Yttrium stabilized ZrO2 beads. It was found that shot peening couldintroduce compressive residual stress to the surface of ZrO2 composites. In Z, ZS, and ZST specimens, the shot peeningtreatment suppressed crack growth caused by the micro-crack introduced to the surface and by the residual stress, while thebending strength of the cracked specimen was improved.
참고문헌 (8)
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