Method and apparatus for forming complex contour structural assemblies
A method and associated preform for forming a structural assembly that defines a complex contour are provided. The preform and, hence, the structural assembly includes first and second skin members and a cellular core member between the first and second skin members. The skin members and/or the core...
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| creator | KORNFELD ROGER E EILERT THEODORE J HARKINS HENRY D BREER MARLIN D |
| description | A method and associated preform for forming a structural assembly that defines a complex contour are provided. The preform and, hence, the structural assembly includes first and second skin members and a cellular core member between the first and second skin members. The skin members and/or the core member can be formed to a shape that corresponds to the desired contour of the structural member before the preform is assembled, e.g., by superplastic forming. That is, the first skin member can be disposed against a contour surface of a die to restrain the preform to the contour defined by the surface. A pressurized fluid is provided against the second skin member to urge the preform against the contour surface. A pressurized fluid is also injected in the first chamber to support the cellular core member. The preform is heated to a bonding temperature before or after being disposed against the contour surface so that the core and skin members are bonded to form the structural assembly. |
| format | Patent |
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The preform and, hence, the structural assembly includes first and second skin members and a cellular core member between the first and second skin members. The skin members and/or the core member can be formed to a shape that corresponds to the desired contour of the structural member before the preform is assembled, e.g., by superplastic forming. That is, the first skin member can be disposed against a contour surface of a die to restrain the preform to the contour defined by the surface. A pressurized fluid is provided against the second skin member to urge the preform against the contour surface. A pressurized fluid is also injected in the first chamber to support the cellular core member. 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The preform and, hence, the structural assembly includes first and second skin members and a cellular core member between the first and second skin members. The skin members and/or the core member can be formed to a shape that corresponds to the desired contour of the structural member before the preform is assembled, e.g., by superplastic forming. That is, the first skin member can be disposed against a contour surface of a die to restrain the preform to the contour defined by the surface. A pressurized fluid is provided against the second skin member to urge the preform against the contour surface. A pressurized fluid is also injected in the first chamber to support the cellular core member. The preform is heated to a bonding temperature before or after being disposed against the contour surface so that the core and skin members are bonded to form the structural assembly.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | Method and apparatus for forming complex contour structural assemblies |
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