Damage Detection System with Sub-microsecond Resolution

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Fiber optic grating sensors have been used to measure multi-dimensional strain, pressure, temperature, corrosion and moisture. This paper presents a method of using fiber grating sensors to measure the position and velocity of a very fast event associated with a blast wave. A chirped fiber grating of 50 mm length is placed in a highly energetic material. The action of the shock wave is to destroy the fiber grating as it propagates along it. By using a spectral filter such as a chirped fiber grating in combination with high speed detectors the position and velocity of the shock wave may ... continued below

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PDF-file: 11 pages; size: 1.7 Mbytes

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Udd, E & Benterou, J February 11, 2008.

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Description

Fiber optic grating sensors have been used to measure multi-dimensional strain, pressure, temperature, corrosion and moisture. This paper presents a method of using fiber grating sensors to measure the position and velocity of a very fast event associated with a blast wave. A chirped fiber grating of 50 mm length is placed in a highly energetic material. The action of the shock wave is to destroy the fiber grating as it propagates along it. By using a spectral filter such as a chirped fiber grating in combination with high speed detectors the position and velocity of the shock wave may be determined. A layout of a system used to experimentally verify this technique is described and results presented for two different highly energetic materials.

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PDF-file: 11 pages; size: 1.7 Mbytes

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  • Presented at: SPIE Smart Structures and Materials & Non-destructive Health Monitoring, San Diego, CA, United States, Mar 09 - Mar 13, 2008

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  • Report No.: LLNL-PROC-401335
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 926067
  • Archival Resource Key: ark:/67531/metadc893333

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Office of Scientific & Technical Information Technical Reports

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  • February 11, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 5, 2016, 1:28 p.m.

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Udd, E & Benterou, J. Damage Detection System with Sub-microsecond Resolution, article, February 11, 2008; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc893333/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.