抄録
This paper describes improvement of the active laminate in bonding strength by using the oxide film of aluminum for insulation. Conventional types of the active laminates were made by hot pressing of an aluminum plate as high coefficient of thermal expansion (CTE) material, a unidirectional carbon fiber reinforced plastics (CFRP) prepreg as low CTE and electric resistance heater, and a unidirectional glass fiber reinforced plastics (GFRP) prepreg as low CTE and insulating material. However, the insulating layer reduces actuation capability of the active laminates. Therefore a two-layer type active laminate was made by using anodized aluminum plate as high CTE and insulator material instead of using GFRP. In this study, the effect of oxide film thickness of the aluminum plate on the bonding strength between the aluminum plate and the CFRP of the two-layer type active laminate was investigated. In addition, bonding strength improvement by irradiating the layer or layers of the active laminates with electron beam (EB) was tried. The main results obtained are as follows: (1) Bonding strength between the aluminum and the CFRP layers of the active laminates and fraction energy can be improved by anodizing the aluminum plate. (2) The fracture energy was improved by EB irradiation.
