Cylindrical case and manufacturing method of cylindrical case

A cylindrical case equipped with: a case main body (10) formed from a composite material obtained by impregnating reinforcing fibers with a thermosetting resin; and a groove (12) disposed annularly at an end of the case main body (10). The circumferential wall (10a) of the case main body (10) has be...

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Bibliographische Detailangaben
Hauptverfasser:	SHIGENARI YUU, TANAKA AGAMU, DAN YUSUKE, MORITA HIDEO, OKUMURA IKUO, HARADA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STEAM ENGINES TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A cylindrical case equipped with: a case main body (10) formed from a composite material obtained by impregnating reinforcing fibers with a thermosetting resin; and a groove (12) disposed annularly at an end of the case main body (10). The circumferential wall (10a) of the case main body (10) has been formed by alternately superposing: biaxial woven fabric layers (13) each comprising biaxial woven fabric (13A) of a non-crimp structure which comprises reinforcing fiber bands (13a, 13b) oriented at the angles of +/-45 DEG; and roving layers (14) each containing rovings (14A) which are bundles of reinforcing fibers and which extend along the circumferential direction. The groove wall (12a) of the groove (12) has been formed by alternately superposing: biaxial woven fabric layers (13) each continuing toward the case main body (10); and triaxial woven fabric layers (15) each containing triaxial woven fabric (15A) of a non-crimp structure which comprises reinforcing fiber bands (15a, 15b) oriented at the angles of +/-45 DEG and a reinforcing fiber band (15c) oriented at the angle of 0 DEG. Since the fan case is formed from, as a material, the composite material comprising reinforcing fibers and a thermosetting resin and has an annular groove, this fan case as a whole can retain high torsional strength and torsional rigidity.