Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Static fatigue failure of the rotating optical disc

회전 중 원심력에 의한 광디스크의 피로 파손

  • 황효균 (LG 전자 우면동 R&D Campus DM(연)) ;
  • 김남웅 (서울대학교 기계항공공학부 대학원) ;
  • 단병주 (LG 전자 우면동 R&D Campus DM(연)) ;
  • 김종만 (LG 전자 우면동 R&D Campus DM(연)) ;
  • 김외열 (LG 전자 우면동 R&D Campus DM(연)) ;
  • 이진우 (LG 전자 우면동 R&D Campus DM(연))
  • Published : 2004.04.28
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Abstract

The base material of optical disc is the amorphous polymer, polycarbonate. So crack growth on the rotating optical disc could happen by the static centrifugal force. This phenomenon is called static fatigue. Today's CD-R disc drive is being operated over 10,000 RPM. This is increasing the possibility of the disc fracture when operating. In this reason, new method to measure the static fatigue threshold quality and the way to calculate the threshold J-integral value and the safe crack length of the optical disc are studied. Finally the environmental effect to optical disc is also studied in this paper.

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