Segmented mandrel for forming composite articles

Details Segmented mandrel for forming composite articles Segmented mandrel for forming composite articles

1989-04-25

1991-06-11

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including product handling means

425470, 264313, 156425, 249176, 249177, 249 63, B29C 3348

Patent

active

050228455

ABSTRACT:
A segmented mandrel is adapted for use in fabricating large diameter, light weight articles (such as aircraft component structures) made of thermosetting composite materials by placing fiber on the external surface of the mandrel followed by autoclave curing of the composite materials. The segmented mandrel is composed of a center shaft extending lengthwise through the mandrel, four mandrel segments mating together along a seam between their respective adjacent edges, T-stiffeners for fastening the mandrel segments together, and bulkheads rigidly mounted around the shaft and connected to the stiffeners. This segmented mandrel is reusable, is easily assembled and disassembled, and has a system that creates a vacuum seal between mandrel sections while at the same time retains the functions of support and alignment of the mandrel segments carrying the parts being cured.

REFERENCES:
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patent: 3279739 (1966-10-01), Long
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patent: 4364894 (1982-12-01), Mayumi
patent: 4448628 (1984-05-01), Stott
patent: 4717330 (1988-01-01), Sarh

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