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Joining composites using Z-pinned precured strips

  • US 5,876,540 A
  • Filed: 05/31/1996
  • Issued: 03/02/1999
  • Est. Priority Date: 05/31/1996
  • Status: Expired due to Term
First Claim
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1. A method for forming a reinforced joint at a bond line in composite structure, comprising the steps of:

  • (a) positioning along the bond line between at least two composite elements a Z-pinned precured strip,the strip having reinforcing pins generally extending in the Z-direction, embedded in a cured resin and projecting on opposed faces of the strip to define stubble, the strip being positioned so that the Z-direction pins extend substantially perpendicular to or at an angle with the plane of the bond line;

    (b) optionally, applying an adhesive on the interfaces between the strip and the elements;

    (c) heating the bond line to connect the elements about the strip to form a joint containing Z-pin reinforcement.

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