In this paper, we study the calculation for the fracture area of the tension specimens using digital image processing techniques. This study was able to calculate the area of the fracture region on the basis of improved image. To extract the area in the original image, we have to use opening operation, close operation, the Hit-or-Miss operation and Bottom hat filter, Top hat filter, etc. In particular, to extract the area of the composite specimen discussed in this study, we have to use the combination of the operations and filters because it is non-isotropic material, or should develop a new algorithm based on it.

ABSTRACT
 1. 서 론
 2. 기본 이론
 3. 해석 예 및 결과분석
 4. 결 론
 References

• 손병직(건양대학교 해외건설플랜트학과) | Son Byung Jik
• 이상열(안동대학교 토목공학과) | Lee Sang Youl