Material for four directional reinforcement of conical shaped ob

Details Material for four directional reinforcement of conical shaped ob Material for four directional reinforcement of conical shaped ob

1986-12-22

1988-01-26

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428105, 428364, 428367, 4285428, B32B 512, B32B 900, B29B 700, D02G 300

Patent

active

047216450

ABSTRACT:
Radially extending fibers are disposed over a conical surface at predetermined sites. The sites correspond to vertices of a pattern of contiguous congruent isosceles triangles inscribed onto the surface of a sector of a circle which may be conformally mapped onto the conical surface so that vertices of the pattern coincide along the join line meridian of the conical surface. Fibers are disposed between the radially extending fibers in three different directions which respectively correspond with the sides of the triangles. The material obtained exhibits an invariant fiber volume fraction along the axis of the conical surface. The material may be used to reinforce a conical object. Also, an object, such as a preform, having a conical surface and method for reinforcing an object having a conical surface, in accordance with the present invention, are described.

REFERENCES:
patent: 4268560 (1981-05-01), Maistre
patent: 4400421 (1983-08-01), Stover
patent: 4515847 (1985-05-01), Taverna et al.
patent: 4519290 (1985-05-01), Inman et al.
DTIC Report ADBO49350, "Boron Nitride-Boron Nitride Composite Material", Potter and Place, pp. 16-20, Dec. 10, 1979.

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