| 摘要 |
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. |
