Accession Number:

ADD019880

Title:

Strain Sensing Composites

Descriptive Note:

Patent, filed 11 Mar 1992, patented 31 Aug 1993

Corporate Author:

NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD

Report Date:

1993-08-31

Pagination or Media Count:

8.0

Abstract:

This invention comprises the use of diacetylene-containing polymers, e.g., polyamides containing reactive diacetylene groups that change their absorption in the visible spectrum with the application of strain as a strain sensing device in various organic matrix composites such as an epoxy laminated composite. The built in sensors in accordance with this invention will not affect the mechanical performance of the composite and will indicate strain without the need for extensive electronic equipment to measure the light pulse amplitude or phase before and after strain.

Subject Categories:

  • Laminates and Composite Materials
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE