Highly ordered Z-pin structures

Details Highly ordered Z-pin structures Highly ordered Z-pin structures

1997-11-10

1999-02-09

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428 86, 428109, 428119, 428120, 428223, 4283044, 4283193, 442370, 442373, B32B 326, B32B 708

Patent

active

058691650

ABSTRACT:
Improved pin-reinforced sandwich structure ties the face sheets (typically on opposite sides of a foam core) together with a plurality of Z-pins that extend into each face sheet (through the core). The pins are arranged in a tetrahedral or hat section configuration in 2-dimensional or 3-dimensional arrangements to provide enhanced reinforcement, particularly in shear. We are able to improve the pulloff strength additionally by dimpling the core surrounding the pins to produce adhesive fillets along the pins.

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Horsch, "Dreidimensionale Verstackungsmaterialien fuer Faserverbundwerkstoffe," Kunstoffe, vol. 80, No. 9, (Sep. 1990), pp. 1003-1007.

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