CERAMIC MATRIX COMPOSITE STRUCTURE HAVING INTEGRAL COOLING PASSAGES AND METHOD OF MANUFACTURE

A multi-layer ceramic matrix composite structure (40) having a plurality of fiber-reinforced cooling passages (42) formed therein. The cooling passages are formed by the removal of a fugitive material. The fugitive material is part of a wrapped fugitive material structure containing a layer of reinf...

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Bibliographische Detailangaben
Hauptverfasser:	CAMPBELL, CHRISTIAN, X, MORRISON, JAY, BUTNER, STEVEN, C, ALBRECHT, HARRY, A, SHTEYMAN, YEVGEUIY
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ENGINE PLANTS IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING LIME, MAGNESIA MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS REFRACTORIES SLAG STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	A multi-layer ceramic matrix composite structure (40) having a plurality of fiber-reinforced cooling passages (42) formed therein. The cooling passages are formed by the removal of a fugitive material. The fugitive material is part of a wrapped fugitive material structure containing a layer of reinforcing ceramic fibers (26) that is used to lay-up the multi-layer structure. An intermediate layer of ceramic fabric may be placed alternately over and under the wrapped fugitive material structure to separate the cooling passages into alternating upper and lower cooling passages. The transversely oriented fibers surrounding the cooling passages serve to increase the interlaminar strength of the structure when compared to prior art designs. An airfoil member incorporating such reinforced integral cooling passages is provided. L'invention concerne une structure composite à matrice céramique à couches multiples (40) dans laquelle sont formés des conduits de refroidissement (42) renforcés par fibres. Les conduits de refroidissement sont formés par l'enlèvement d'un matériau fugitif (24). Le matériau fugitif fait partie d'une structure de matériau fugitif enveloppé (28) contenant une couche de fibres céramiques de renforcement (26) utilisée afin de bâtir la structure à couches multiples. Une couche intermédiaire de tissu céramique (56) peut être placée alternativement dessous et au dessus de la structure de matériau fugitif afin de séparer les conduits de refroidissement alternativement en conduits supérieurs (54) et inférieurs (52). Par rapport aux conceptions antérieures de la technique, les fibres qui, orientées transversalement, entourent les conduits de refroidissement, servent à augmenter la force entre les couches de la structure. L'invention concerne aussi un élément de surface portante (112) comprenant de tels conduits de refroidissement renforcés à passage intégral (120).