four kinds of models designed by the basis of British industrial standard and ISO international standard in this study. Energy release rates at mode 1 are investigated by the fatigue analysis of aluminum foam TDCB model bonded with adhesive. These analysis models are compared each other by classifying four models into m values with 2, 2.5, 3 and 3.5. The value of m as the gradient of model is represented with the function of crack length(a) and height of model(h). Through the correlation relation, the fracture behavior of bonded material is analyzed and these analysis results can be applied to composite structures of various areas. Mechanical property and fracture toughness of composite material are also analyzed in this study.

Abstract
 1. 서론
 2. 해석 모델 및 경계조건
  2.1 해석 모델
  2.2 경계 조건
 3. 모델의 해석 결과
 4. 결론
 후기
 참고문헌

• 김성수(공주대학교 기계공학과 대학원) | S. S. Kim
• 조재웅(공주대학교 기계자동차공학부) | J. U. Cho 교신저자