대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2001년도 추계학술대회논문집A
- /
- Pages.299-303
- /
- 2001
접착층내 결함이 계면균열의 응력확대계수에 미치는 영향 평가
Effect Evaluation of Hole Defects in Adhesive on SIF of Interface Crack
- 발행 : 2001.11.01
초록
Adherend-adhesive interface failure will occur on a macroscale when surface preparation or material quality are poor. It is well known that the stress singularity occurs at the edges of interface between the adhernds and the adhesive, and that crack will initiate from these positions. Also if bubbles are created and remained in the adhesive layer during the bonding process, the stress concentrates around these hole defects. In this paper, the effects of the hole defects on the SIF of interface crack were examined. From results, SIF increased with the hole defects near the interface crack and increased with an decreae in the upper adherend thickness, an increase in the center adhesive thickness.