Abstract
The carbon fiber reinforced plastics have been widely used to manufacture the precise structure, such as antenna reflectors, due to their lightweight and high dimensional stability as compared to the metallic materials. When one uses CFRP laminates to antenna reflectors for space telescopes, thermal deformation invokes a serious problem. This deformation can be suppressed if the laminates are stacked symmetrically. It is known, however, that CFRP laminates show unpredictable deformation caused by the ply angle misalignments. Since the ply misalignment is unavoidable, it is important to choose the lay-ups that mitigate the misalignment effects. In this study, the lay-ups and supporting positions are optimized in robust sense by using Taguchi method (TM). Although it is not possible to take into account the effect of interactions between parameters. This is because TM decreases the optimization accuracy in some cases. Therefore, Taguchi method with statistical modeling (TM/S) which considers the interaction effects by using statistical estimated model is proposed. Finally, the performance of TM and TM/S are compared each other.
