CYLINDRICAL CASE AND MANUFACTURING METHOD OF CYLINDRICAL CASE

摘要

A cylindrical case includes a case main body, and a groove disposed annularly at one end of the case main body. A peripheral wall of the case main body is formed by alternately laminating a biaxial fabric layer, which includes a biaxial fabric of a non-crimp structure composed of reinforcing fiber bands having an orientation angle of ±45°, and a roving layer. A groove wall of the groove is formed by alternately laminating the biaxial fabric layer, which continues to the case main body side, and a triaxial fabric layer, which includes a triaxial fabric of a non-crimp structure composed of reinforcing fiber bands having an orientation angle of ±45° and a reinforcing fiber band having an orientation angle of 0°.

主权项

1. a cylindrical case made of a composite material of reinforcing fibers impregnated with a thermosetting resin, the cylindrical case comprising:
a case main body forming a cylindrical shape; and a groove which is disposed at one end of the case main body annularly along a circumferential direction and is open to a distal side, wherein a peripheral wall of the case main body is formed by alternately laminating a plurality of biaxial fabric layers, which include a biaxial fabric of a non-crimp structure composed of two axes of reinforcing fiber bands having an orientation angle of ±15-75° to an axial direction of the case main body, and a plurality of roving layers, which include a roving composed of a bundle of reinforcing fibers extending along the circumferential direction of the case main body, and a groove wall of the groove is formed by alternately laminating a plurality of biaxial fabric layers, which continue to the plurality of biaxial fabric layers in the peripheral wall of the case main body, and plurality of triaxial fabric layers, which include a triaxial fabric of a non-crimp structure composed of total three axes of reinforcing fiber bands: two axes of reinforcing fiber bands having an orientation angle of ±15-75° to the axial direction of the case main body, and one axis of reinforcing fiber band having an orientation angle of 0° to the axial direction of the case main body.