Abstract
A chirped fiber Bragg grating was used to measure the non-uniform strain profile of a notched aluminum specimen used to simulate a cracked structure. The specimen was subjected to tensile tests that produced regions of non-uniform strain near the notches. Analysis of power reflectance spectra from the grating, through the use of an integration method, enabled the strain profile near the notches to be determined. Unlike other intragrating sensing methods, this method did not require a disturbance hypothesis to be postulated. The strain profile results from this intragrating sensor were in reasonable agreement with predictions from modeling conducted using the finite element method.
Original language | English |
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Title of host publication | EWOFS 2007 Proceedings |
Subtitle of host publication | Third European Workshop on Optical Fibre Sensors |
DOIs | |
Publication status | Published - 4 Dec 2007 |
Event | European Workshop on Optical Fibre Sensors 2007 - Napoli, Italy Duration: 4 Jul 2007 → 6 Jul 2007 Conference number: 3rd https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6619.toc (Proceedings) |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 6619 |
ISSN (Print) | 0277-786X |
Conference
Conference | European Workshop on Optical Fibre Sensors 2007 |
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Abbreviated title | EWOFS 2007 |
Country/Territory | Italy |
City | Napoli |
Period | 4/07/07 → 6/07/07 |
Internet address |
Keywords
- Chirped fiber Bragg grating
- Intragrating sensing
- Strain measurement