skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location

Abstract

A shock velocity and damage location sensor providing a means of measuring shock speed and damage location. The sensor consists of a long series of time-of-arrival "points" constructed with fiber optics. The fiber optic sensor apparatus measures shock velocity as the fiber sensor is progressively crushed as a shock wave proceeds in a direction along the fiber. The light received by a receiving means changes as time-of-arrival points are destroyed as the sensor is disturbed by the shock. The sensor may comprise a transmitting fiber bent into a series of loops and fused to a receiving fiber at various places, time-of-arrival points, along the receiving fibers length. At the "points" of contact, where a portion of the light leaves the transmitting fiber and enters the receiving fiber, the loops would be required to allow the light to travel backwards through the receiving fiber toward a receiving means. The sensor may also comprise a single optical fiber wherein the time-of-arrival points are comprised of reflection planes distributed along the fibers length. In this configuration, as the shock front proceeds along the fiber it destroys one reflector after another. The output received by a receiving means from this sensor may be amore » series of downward steps produced as the shock wave destroys one time-of-arrival point after another, or a nonsequential pattern of steps in the event time-of-arrival points are destroyed at any point along the sensor.« less

Inventors:
 [1]
  1. (Albuquerque, NM)
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
870050
Patent Number(s):
5446278
Assignee:
United States of America as represented by United States (Washington, DC) SNL
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fiber; optic; sensor; employing; successively; destroyed; coupled; reflectors; detecting; shock; wave; speed; damage; location; velocity; providing; means; measuring; consists; series; time-of-arrival; constructed; optics; apparatus; measures; progressively; crushed; proceeds; direction; light; received; receiving; changes; disturbed; comprise; transmitting; bent; loops; fused; various; fibers; length; contact; portion; leaves; enters; required; allow; travel; backwards; single; optical; comprised; reflection; planes; distributed; configuration; front; destroys; reflector; output; downward; steps; produced; nonsequential; pattern; event; receiving fiber; receiving fibers; fiber optics; shock wave; fiber optic; optical fiber; sensor apparatus; receiving means; damage location; optic sensor; single optical; shock front; shock velocity; apparatus measures; transmitting fiber; location sensor; sensor providing; shock speed; measuring shock; fiber sensor; event time; single optic; /250/

Citation Formats

Weiss, Jonathan D. Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location. United States: N. p., 1995. Web.
Weiss, Jonathan D. Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location. United States.
Weiss, Jonathan D. Sun . "Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location". United States. https://www.osti.gov/servlets/purl/870050.
@article{osti_870050,
title = {Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location},
author = {Weiss, Jonathan D.},
abstractNote = {A shock velocity and damage location sensor providing a means of measuring shock speed and damage location. The sensor consists of a long series of time-of-arrival "points" constructed with fiber optics. The fiber optic sensor apparatus measures shock velocity as the fiber sensor is progressively crushed as a shock wave proceeds in a direction along the fiber. The light received by a receiving means changes as time-of-arrival points are destroyed as the sensor is disturbed by the shock. The sensor may comprise a transmitting fiber bent into a series of loops and fused to a receiving fiber at various places, time-of-arrival points, along the receiving fibers length. At the "points" of contact, where a portion of the light leaves the transmitting fiber and enters the receiving fiber, the loops would be required to allow the light to travel backwards through the receiving fiber toward a receiving means. The sensor may also comprise a single optical fiber wherein the time-of-arrival points are comprised of reflection planes distributed along the fibers length. In this configuration, as the shock front proceeds along the fiber it destroys one reflector after another. The output received by a receiving means from this sensor may be a series of downward steps produced as the shock wave destroys one time-of-arrival point after another, or a nonsequential pattern of steps in the event time-of-arrival points are destroyed at any point along the sensor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

Patent:

Save / Share: