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公开(公告)号：ES2001326B3
公开(公告)日：1991-11-16
申请号：ES87630056
申请日：1987-04-07
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FAIZ ROBERT LEE , WALKER WILLIAM J , RAMEY PHILIP , ADAMS KENNETH M , FLONC NICHOLAS P , NGUYEN DEAN
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公开(公告)号：DE69208355T2
公开(公告)日：1996-06-27
申请号：DE69208355
申请日：1992-04-15
Applicant: UNITED TECHNOLOGIES CORP
Inventor： DUBLINSKI ALEXANDER , FABIAN EDWARD , RAMEY PHILIP , TONI DARRYL
IPC: B29C70/10 , B29C33/30 , B29C39/40 , B29C43/12 , B29C70/30 , B29C70/44 , B29C70/54 , B29D99/00 , B32B3/02 , B64C1/00 , B29C70/00 , B29D31/00
Abstract: A method of fabricating a structural member having a stiffener bead therein. Prepreg plies or layers of high tensile strength fabric are laid up on a conformable caul plate. A rubber-like plug is prefabricated to the shape of the stiffener bead and is urged into a stiffener bead cavity of the caul plate by a metal tool to sandwich the prepreg plies between the caul and the plug. The caul and the plug cooperate to cause the prepreg plies to conform to the desired shape of the stiffener bead.
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公开(公告)号：AU7152687A
公开(公告)日：1987-10-29
申请号：AU7152687
申请日：1987-04-13
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FAIZ ROBERT LEE , WALKER WILLIAM J , RAMEY PHILIP , ADAMS KENNETH M , FLONC NICHOLAS P , NGUYEN DEAN
Abstract: A shrinkable foam mandrel that can be easily removed and composite resin transfer molding process that uses the foam mandrel. The foam is dimensionally stable at a first temperature that typically corresponds to the cure temperature of the composite resin. The foam is capable of irreversibly shrinking to less than about 0.5 said foam's original size at a second temperature that is above said first temperature. The foam is encapsulated by a non-stick elastomer skin and covered with fibers. The fiber covered elastomer encapsulated foam is disposed in a female mold cavity and resin is injected into the female mold cavity. The resin and fibers are cured and the resulting composite component is removed from the female mold. The temperature is raised to the second temperature and the elastomer encapsulated foam male mandrel irreversibly shrinks to less than about 0.5 its original size. Finally the shrunken male mandrel is removed from said composite component. These mandrels are a solution to the aerospace industry's flyaway mandrel problem as they are lightweight and can easily be removed from the composite component.
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公开(公告)号：DE69208355D1
公开(公告)日：1996-03-28
申请号：DE69208355
申请日：1992-04-15
Applicant: UNITED TECHNOLOGIES CORP
Inventor： DUBLINSKI ALEXANDER , FABIAN EDWARD , RAMEY PHILIP , TONI DARRYL
IPC: B29C70/10 , B29C33/30 , B29C39/40 , B29C43/12 , B29C70/30 , B29C70/44 , B29C70/54 , B29D99/00 , B32B3/02 , B64C1/00 , B29C70/00 , B29D31/00
Abstract: A method of fabricating a structural member having a stiffener bead therein. Prepreg plies or layers of high tensile strength fabric are laid up on a conformable caul plate. A rubber-like plug is prefabricated to the shape of the stiffener bead and is urged into a stiffener bead cavity of the caul plate by a metal tool to sandwich the prepreg plies between the caul and the plug. The caul and the plug cooperate to cause the prepreg plies to conform to the desired shape of the stiffener bead.
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公开(公告)号：DE3768849D1
公开(公告)日：1991-05-02
申请号：DE3768849
申请日：1987-04-07
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FAIZ ROBERT LEE , WALKER WILLIAM J , RAMEY PHILIP , ADAMS KENNETH M , FLONC NICHOLAS P , NGUYEN DEAN
Abstract: A shrinkable foam mandrel that can be easily removed and composite resin transfer molding process that uses the foam mandrel. The foam is dimensionally stable at a first temperature that typically corresponds to the cure temperature of the composite resin. The foam is capable of irreversibly shrinking to less than about 0.5 said foam's original size at a second temperature that is above said first temperature. The foam is encapsulated by a non-stick elastomer skin and covered with fibers. The fiber covered elastomer encapsulated foam is disposed in a female mold cavity and resin is injected into the female mold cavity. The resin and fibers are cured and the resulting composite component is removed from the female mold. The temperature is raised to the second temperature and the elastomer encapsulated foam male mandrel irreversibly shrinks to less than about 0.5 its original size. Finally the shrunken male mandrel is removed from said composite component. These mandrels are a solution to the aerospace industry's flyaway mandrel problem as they are lightweight and can easily be removed from the composite component.
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Patent Agency Ranking
公开(公告)号：DE69109255T2
公开(公告)日：1995-08-24
申请号：DE69109255
申请日：1991-12-12
Applicant: UNITED TECHNOLOGIES CORP
Inventor： LEONI PETER BANCROFT , DUBLINSKI ALEXANDER CHARLES , RAMEY PHILIP
IPC: B29C45/02 , B29C43/12 , B29C43/36 , B29C45/14 , B29C45/26 , B29C70/06 , B29C70/44 , B29K105/08 , B29L9/00 , B29L22/00
Abstract: An apparatus and method for resin transfer molding composite articles of complex configuration that have high fiber-to-resin ratios. The molding apparatus includes a compliant mold subassembly comprising one or more conformable cauls and a complementary, non-permeable membrane that function, in combination, as a semi-rigid molding tool. The compliant mold subassembly is relatively insensitive to bulk variations of layed-up fiber reinforcement material, facilitating fiber reinforcement material lay up and closure of the molding apparatus. The compliant mold subassembly provides uniform pressures during various molding stages, i.e., resin injection, expulsion of excess resin, curing, to enhance the homogeneity and dimensional stability of the finished composite article. The semi-rigid aspect of the compliant mold subassembly facilitates demolding of the finished composite article. The process utilizes staged pressurization transmitted through the compliant mold subassembly to enhance resin flow for complete, uniform saturation of fiber reinforcement layups and to expel excess resin prior to curing of the resin impregnated fiber reinforcement layups.
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公开(公告)号：DE69109255D1
公开(公告)日：1995-06-01
申请号：DE69109255
申请日：1991-12-12
Applicant: UNITED TECHNOLOGIES CORP
Inventor： LEONI PETER BANCROFT , DUBLINSKI ALEXANDER CHARLES , RAMEY PHILIP
IPC: B29C45/02 , B29C43/12 , B29C43/36 , B29C45/14 , B29C45/26 , B29C70/06 , B29C70/44 , B29K105/08 , B29L9/00 , B29L22/00
Abstract: An apparatus and method for resin transfer molding composite articles of complex configuration that have high fiber-to-resin ratios. The molding apparatus includes a compliant mold subassembly comprising one or more conformable cauls and a complementary, non-permeable membrane that function, in combination, as a semi-rigid molding tool. The compliant mold subassembly is relatively insensitive to bulk variations of layed-up fiber reinforcement material, facilitating fiber reinforcement material lay up and closure of the molding apparatus. The compliant mold subassembly provides uniform pressures during various molding stages, i.e., resin injection, expulsion of excess resin, curing, to enhance the homogeneity and dimensional stability of the finished composite article. The semi-rigid aspect of the compliant mold subassembly facilitates demolding of the finished composite article. The process utilizes staged pressurization transmitted through the compliant mold subassembly to enhance resin flow for complete, uniform saturation of fiber reinforcement layups and to expel excess resin prior to curing of the resin impregnated fiber reinforcement layups.
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公开(公告)号：CA2054066A1
公开(公告)日：1992-06-20
申请号：CA2054066
申请日：1991-10-23
Applicant: UNITED TECHNOLOGIES CORP
Inventor： LEONI PETER B , RAMEY PHILIP , DUBLINSKI ALEXANDER C
IPC: B29C45/02 , B29C43/12 , B29C43/36 , B29C45/14 , B29C45/26 , B29C70/06 , B29C70/44 , B29K105/08 , B29L9/00 , B29L22/00
Abstract: Tooling Method and Apparatus for Resin Transfer Molding An apparatus and method for resin transfer molding composite articles of complex configuration that have high fiber-to-resin ratios. The molding apparatus includes a compliant mold subassembly comprising one or more conformable cauls and a complementary, non-permeable membrane that function, in combination, as a semi-rigid molding tool. The compliant mold subassembly is relatively insensitive to bulk variations of layed-up fiber reinforcement material, facilitating fiber reinforcement material lay up and closure of the molding apparatus. The compliant mold subassembly provides uniform pressures during various molding stages, i.e., resin injection, expulsion of excess resin, curing, to enhance the homogeneity and dimensional stability of the finished composite article. The semi-rigid aspect of the compliant mold subassembly facilitates demolding of the finished composite article. The process utilizes staged pressurization transmitted through the compliant mold subassembly to enhance resin flow for complete, uniform saturation of fiber reinforcement layups and to expel excess resin prior to curing of the resin-impregnated fiber reinforcement layups.
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公开(公告)号：AU584571B2
公开(公告)日：1989-05-25
申请号：AU7152687
申请日：1987-04-13
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FAIZ ROBERT LEE , WALKER WILLIAM J , RAMEY PHILIP , ADAMS KENNETH M , FLONC NICHOLAS P , NGUYEN DEAN
Abstract: A shrinkable foam mandrel that can be easily removed and composite resin transfer molding process that uses the foam mandrel. The foam is dimensionally stable at a first temperature that typically corresponds to the cure temperature of the composite resin. The foam is capable of irreversibly shrinking to less than about 0.5 said foam's original size at a second temperature that is above said first temperature. The foam is encapsulated by a non-stick elastomer skin and covered with fibers. The fiber covered elastomer encapsulated foam is disposed in a female mold cavity and resin is injected into the female mold cavity. The resin and fibers are cured and the resulting composite component is removed from the female mold. The temperature is raised to the second temperature and the elastomer encapsulated foam male mandrel irreversibly shrinks to less than about 0.5 its original size. Finally the shrunken male mandrel is removed from said composite component. These mandrels are a solution to the aerospace industry's flyaway mandrel problem as they are lightweight and can easily be removed from the composite component.
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公开(公告)号：ES2001326A4
公开(公告)日：1988-05-16
申请号：ES87630056
申请日：1987-04-07
Applicant: UNITED TECHNOLOGIES CORP
Inventor： WALKER WILLIAM J , NGUYEN DEAN , FAIZ ROBERT LEE , ADAMS KENNETH M , FLONC NICHOLAS P , RAMEY PHILIP
Abstract: UN MANDRIL DE ESPUMA DE LATEX CONTRAIBLE QUE PUEDE SER FACILMENTE SEPARADO Y UNA RESINA COMPUESTA CAMBIAN EL PROCESO DE MOLDEADO QUE USA EL MANDRIL DE ESPUMA DE LATEX. LA ESPUMA ES DIMENSIONALMENTE ESTABLE A UNA PRIMERA TEMPERATURA QUE CORRESPONDE A LA TEMPERATURA DE FRAGUADO DE LA RESINA COMPUESTA. LA ESPUMA ES CAPAZ DE CONTRAERSE IRREVERSIBLEMENTE A MENOS DE ALREDEDOR DEL 0,5 DEL TAMAÑO ORIGINAL DE LA MISMA A UNA SEGUNDA TEMPERATURA QUE ESTA ALREDEDOR DE LA PRIMERA. LA ESPUMA DE LATEX SE ENCAPSULA MEDIANTE UNA CUBIERTA ELASTOMERICA Y SE CUBRE CON FIBRAS. LA ESPUMA ASI ENCAPSULADA SE DISPONE EN UNA CAVIDAD DE MOLDE HEMBRA Y LA RESINA SE INYECTA EN EL INTERIOR DE DICHA CAVIDAD. LA RESINA Y LAS FIBRAS FRAGUAN Y EL COMPONENTE COMPUESTO SE SEPARA DEL MOLDE HEMBRA. LA TEMPERATURA SE ELEVA A LA SEGUNDA TEMPERATURA Y EL MANDRIL MACHO DE ESPUMA DE LATEX DE ENCAPSULADO ELASTOMERO SE CONTRAE IRREVERSIBLEMENTE A MENOS DE LA MITAD DE SU TAMAÑO ORIGINAL. FINALMENTE EL MANDRIL MACHO CONTRAIDO SE SEPARADE DICHO COMPONENTE COMPUESTO. ESTOS MANDRILES SON UNA SOLUCION PARA LOS PROBLEMAS DE LA INDUSTRIA AEROESPACIAL POR SER MUY LIGEROS DE PESO Y PODER FACILMENTE SEPARARSE DEL COMPONENTE COMPUESTO.
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