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Z-pin-reinforced sandwich structure

  • US 5,958,550 A
  • Filed: 03/05/1997
  • Issued: 09/28/1999
  • Est. Priority Date: 11/01/1995
  • Status: Expired due to Term
First Claim
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1. A sandwich structure having a hollow core, comprising:

  • first and second, spaced apart face sheets generally oriented parallel to one another, the face sheets being fiber-reinforced resin composites; and

    a plurality of rigid pins extending between and into both the first and second face sheets, providing reinforcement for the face sheets, and holding the face sheets apart to define the hollow core wherein the reinforcement forms a column structure.

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