Laminate of metal sheet material and threads bonded thereto, as

Details Laminate of metal sheet material and threads bonded thereto, as Laminate of metal sheet material and threads bonded thereto, as

1982-01-08

1984-12-18

McCamish, Marion E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

156229, 156285, 428215, 428216, 428252, 428294, 428416, 428418, 4284258, 428458, 4284744, 428902, 428910, B32B 1508

Patent

active

044891237

ABSTRACT:
The invention relates to a laminate composed of two, three, four or more metal sheets. The metal sheets, which may for instance be of an aluminum alloy, are bonded together by means of adhesive layers. In the adhesive layers there are embedded poly-paraphenylene terephthalamide or carbon threads having a high modulus of elasticity. In the unloaded state of the laminate in its entirety there is a compressive stress in the range of 0 to 200 or 300 N/mm.sup.2 in each metal sheet and a tensile stress in each layer with threads. The material according to the invention is in the first place meant for use in the field of aircraft or spacecraft engineering. However, it also may with advantage find application in various other fields of engineering where high demands are made on static, dynamic fatigue properties and damage tolerance.

REFERENCES:
patent: 4035694 (1977-07-01), Barton et al.
David K. Klapprott, et al., "Improved Fatigue Life Through High Modulus-fiber Reinforcement of Adhesives", National Sampe, Apr. 1975, pp. 563-581.

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