High strength composite structure

Details High strength composite structure High strength composite structure

1974-10-10

1977-03-15

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

52630, 244119, 428119, 428167, 428178, 428179, 428902, B32B 312

Patent

active

040125491

ABSTRACT:
An isogrid structure having inset strips of composite materials at the top and bottom of the grid webs. A preferably flanged isogrid basically consists of I-beam members arranged in an integral repeating pattern of substantially equilateral triangles. One flange may be integral with a skin sheet covering the structure. At least some of these flanges are provided with grooves running parallel to the beam webs, filled with advanced composite materials comprising high-strength fibers in a supporting matrix. Preferably, the fibers run parallel to the beam webs. Preferred arrangements of the fibers are described.

REFERENCES:
patent: 3042050 (1962-07-01), Finlayson
patent: 3099335 (1963-07-01), Sklar
patent: 3323820 (1967-06-01), Braccini
patent: 3349537 (1967-10-01), Hopfeld
patent: 3743455 (1973-07-01), Green
patent: 3778334 (1973-12-01), Sturgeon
patent: 3840350 (1974-10-01), Tucker, Jr.
patent: 3857150 (1974-12-01), Faucheux
The Isogrid an Article by Paul Slysh on pp. 102 to 107 of Machine Design, Apr. 19, 1973, vol. 45, No. 9.

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