Fiber grating bond joint health monitoring system
Abstract
Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.
- Inventors:
- Issue Date:
- Research Org.:
- US Department of Energy (USDOE), Washington, DC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1531477
- Patent Number(s):
- 6756580
- Application Number:
- 10/458,109
- Assignee:
- Schulz, Whitten Lee, Fairview, OR (United States)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FG03-99ER82753
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2003-06-10
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Schulz, Whitten Lee, and Udd, Eric. Fiber grating bond joint health monitoring system. United States: N. p., 2004.
Web.
Schulz, Whitten Lee, & Udd, Eric. Fiber grating bond joint health monitoring system. United States.
Schulz, Whitten Lee, and Udd, Eric. Tue .
"Fiber grating bond joint health monitoring system". United States. https://www.osti.gov/servlets/purl/1531477.
@article{osti_1531477,
title = {Fiber grating bond joint health monitoring system},
author = {Schulz, Whitten Lee and Udd, Eric},
abstractNote = {Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {6}
}
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Composite strengthening and instrumentation of the Horsetail Falls Bridge with long gauge length fiber Bragg grating strain sensors
conference, December 2017
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Works referencing / citing this record:
Fiber grating environmental sensing system
patent, May 2006
- Udd, Eric; Calvert, Sean G.; Schulz, Whitten
- US Patent Document 7,038,190
Bond separation inspection method using compressive thermal strain in optical sensor part
patent, May 2006
- Sato, Keiichi
- US Patent Document 7,041,960