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

1989-05-09

1991-03-05

Lesmes, George F.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156172, 156175, 156180, B32B 3100

Patent

active

049975013

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: 4168337 (1979-09-01), Maistre
patent: 4219597 (1980-08-01), Maistre
patent: 4252588 (1981-02-01), Kratsch
patent: 4268560 (1981-05-01), Maistre
patent: 4354888 (1982-10-01), Bompard
patent: 4366658 (1983-01-01), Maistre
patent: 4400421 (1983-08-01), Stover
patent: 4495231 (1985-01-01), Laskaris
patent: 4515847 (1985-05-01), Taverna
patent: 4519290 (1985-05-01), Inman
N. D. Potter & T. M. Place; "Improved Boron Nitride-Boron Nitride Composite Material"; DTIC report ADB049350; Dec. 10, 1979, pp. 16-20.

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