Method of manufacturing composite structures

Details Method of manufacturing composite structures Method of manufacturing composite structures

1991-04-22

1992-05-12

Van Balen, William J.

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

156213, 156295, 156313, 264321, 428159, 428160, 4283144, 4283148, 4283166, 4283227, B32B 326

Patent

active

051126630

ABSTRACT:
A method of making a composite structure, such as an aircraft wing, which has a foam core and at least one outer layer of fiber reinforced resin material. A shaped foam core is prepared by compressing a rigid, closed-cell foam to the desired shape in a closed mold under heat and pressure. A sheet of flexible open-cell foam is impregnated with a thermosetting resin. A sheet of dry fiber reinforcement material is placed on one or both sides of the impregnated foam sheet. The resulting sandwich is wrapped around the foam core and the assembly is placed in a corresponding tool cavity. The tool is heated to the curing temperature of the impregnating resin. As the temperature rises, the foam core expands, exerting pressure on the impregnated foam sheet, forcing resin into the fiber reinforcement, wetting all the fibers and forcing air out of the material. As the resin cures, void-free, strong skins are formed integral with the core foam. After the resin is cured, the part is cooled, removed from the tool and trimmed.

REFERENCES:
patent: 3930919 (1976-01-01), Chant et al.
patent: 3944704 (1976-03-01), Dirks
patent: 3989781 (1976-11-01), Chant
patent: 4028477 (1977-06-01), Goppel et al.
patent: 4034137 (1977-07-01), Hofer
patent: 4042746 (1977-08-01), Hofer

Affiliated with

Also associated with

Rating

Method of manufacturing composite structures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing composite structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing composite structures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2425876