Accession Number:

ADD012918

Title:

Damage Assessment System for Composite Plastic Structures Using Fiber Optics.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1986-04-08

Pagination or Media Count:

4.0

Abstract:

This patent discusses a damage assessment system consisting of a three-dimensional grid of optical fibers for locating and assessing damage in plastic composite structures. A optical fiber grid system is implanted in a composite structure during its fabrication and becomes integrated with it. The optical fiber grid experiences an identical loaddamage condition as the structure itself. Using a system of interrogation based on optoelectronics, passage or continuity of light throughout the system can be monitored for light attenuation or interruption. Highly stressed fibers would attenuate light while broken fibers would interrupt or hinder light transmission. By monitoring a number of optical fiber ends, the extent of damage in three dimensions can be determined.

Subject Categories:

  • Plastics
  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE