Composites and methods of making the same

Details Composites and methods of making the same Composites and methods of making the same

1993-01-28

1998-09-29

Wood, Elizabeth D.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

428361, 428368, 428370, 428374, 428382, 428383, 428384, 428389, 428407, 428408, 428902, D02G 300, B32B 900

Patent

active

058144030

ABSTRACT:
A computer model calculates a critical aspect ratio for a discontinuous fiber composite having fibers dispersed in a matrix. The critical aspect ratio is a function of the elastic modulus and the cohesive energy of the fiber and the matrix. The composite incorporates physical features such as fiber shape features or additives in the fiber or matrix which adjust the elastic modulus and/or cohesive energy of the fiber, of the matrix or both to a value different than the corresponding value for unmodified fiber material or matrix material. These adjustments are selected so that the critical aspect ratio for the material including the modifications will be less than the corresponding critical aspect ratio for the material without the modifications. The resulting composite provides enhanced load sharing between fiber and matrix.

REFERENCES:
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patent: 4874661 (1989-10-01), Browne et al.
patent: 4892772 (1990-01-01), Su
patent: 4966801 (1990-10-01), Becker et al.
patent: 5053263 (1991-10-01), Krone et al.
patent: 5068142 (1991-11-01), Nose et al.
patent: 5288555 (1994-02-01), Monette et al.

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