Interfacial shear strength between epoxy and carbon fiber was analyzed utilizing a hemi-spherical microbond specimens adhered onto single carbon fiber. The hemi-spherical microbond specimen showed high regression coefficient and small standard deviation in the measurement of interfacial strength as compared with a droplet and an inverse hemi-spherical one. This seemed to be caused by the reduced meniscus effects and the reduced stress concentration in the region contacting with a pin-hole loading device. Finite element analysis showed that the stress distributions along the fiber/matrix interface in the hemi-spherical specimen had a stable shear stress distribution along the interface without any stress mode change. The experimental data was also different according to the kinds of loading device such as the microvise-tip and the pin-holed plate. Key Words: Interfacial shear strength(계면 전단강도

Keywords: Interfacial shear strength, Hemispherical microbond specimen, Droplet microbond specimen, Inverse hemi-spherical specimen ,Single carbon fiber/epoxy

Keywords: 계면 전단강도, 반구형 미소접합 시험편, 드랍레트 미소접합 시험편, 역 반구형 미소접합 시험편, 탄소섬유/에폭시