| 摘要 |
PURPOSE:To aim at improvement in compressive strength, by interposing a series of soft layers such as a cloth layer and a mat layer consisting of a reinforced fiber being smaller in the modulus of elasticity than a carbon fiber between a unidirection layer and the said cloth layer for lamination. CONSTITUTION:A unidirection layer C1 of a carbon fiber C is layered on a surface layer 11a of a fiber-reinforced plastic plate spring 11, a cloth layer C2 of the carbon fiber C on an intermediate 11b, and a unidirection layer G2 of a glass fiber G on a center layer 11C respectively; in addition, soft layers S such as the cloth layer, a mat layer and the like consisting of a reinforced fiber F being smaller in the modulus of elasticity than the carbon fiber C are interposingly layered between layers C1 and C2 as well. When this fiber-reinforced plastic plate spring 11 is clamped with a U-bolt by way of example, compressive load acts on the layer C1 but said layers S exist beneath whereby the carbon fiber C of the surface layer 11a eats its way into the soft layer S, making it into an undulated form with which side slipping therefore does not happen at all, so that not only a breakdown of the layer C1 is obviated but also compressive strength is thus improved. |
