대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2004년도 춘계학술대회
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- Pages.31-35
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- 2004
디스크 형상 변화에 따른 파손에 끼치는 영향
Influence of the variation of its geometry on the disk failure
- Kim, Jong-Man (LG Electronics Co.) ;
- Hwang, Hyo-Kune (LG Electronics Co.) ;
- Dan, Byung-Ju (LG Electronics Co.) ;
- Kim, Wae-Yeul (LG Electronics Co.) ;
- Lee, Jin-Woo (LG Electronics Co.)
- 발행 : 2004.04.28
초록
The speed competition of optical disk drive has been accelerated with the fast advancement of its storage density and data transmission technology. The continuous increase of the spinning speed of CD meets the unexpected and catastrophic failure of disk during the operation. The effect of its thickness and outer radius of disk were investigated to reduce stresses and J-integral around the crack tip. The effect of its thickness was considered ahead of the crack tip. In the effect of outer radius of disk, linear elastic fracture mechanics was used to obtain the critical crack length, which indicates the onset length for unstable crack growth. This approach is so significant as to detect the growing crack by disk drive before the catastrophic failure, which will provide the standard size of its safety for high-speed disk drive.