Aluminum foam with porous material has the excellent mechanical property of light weight and impact absorption. It is necessary to obtain the information of fracture toughness at the adhesive work by the joint method. This study is investigated by fatigue analysis with DCB(Double Cantilever Beam) specimen models to evaluate the strengths at adhesive joints on the basis of British industrial and ISO international standards. 4 kinds of specimens are modelled by changing the height of specimen and the analysis results are compared with each other. As the height of specimen becomes lower, the displacement on the y direction, load and energy release rates become higher. Through the correlation obtained by this study result, fracture behaviors are examined and mechanical properties can be understood. Aluminum foam material bonded with adhesive can applied to the real composite structure by use of this study result.

Aluminum foam as porous material in wide use has the excellent mechanical and thermal properties. As adhesive process technique is used by bonding such composites as aluminum foam, fracture toughness at adhesive joint is the main point to investigate. In this study, DCB specimens are manufactured to evaluate the strengths at adhesive joints on the basis of British industrial and ISO international standards. Four kinds of specimens are made by changing the height of the specimen and these experimental results are compared with each other. Energy release rates are also calculated at mode I. As the hight of specimen becomes higher, reaction force and energy release rates become higher. Through the correlation obtained by this study result, aluminum foam material bonded with adhesive can be applied to the real composite structure and mechanical property and fracture toughness are analyzed systematically.

Aluminum foam with the property as the excellent impact absorption has been widely used recently. It is necessary to study fracture energy due to fracture toughness by the use of adhesive joint at aluminum foam. This study aims at strength evaluation about adhesive joint on aluminum foam and the fracture of bonded DCB model with this material property is analyzed by simulation. These models are designed by differing in height on the basis of British industrial and ISO standards. As the value of height at model is higher, bonded part is separated to the end. By comparing some analysis results with experimental data, these data could agree with each other. By the verification with experimental results, these all simulation results in this study can be applied on real composite structure with aluminum foam material effectively. The fracture behavior and mechanical property can also be examined by this study.