Structural integrity monitoring of aircraft panels using a distributed Bragg grating sensing technique

Dawn K. Gifford; Brooks A. Childers; Roger G. Duncan; Anthony C. Jackson; Surendra Shaw; William Schwienberg; James Mazza

doi:10.1117/12.508072

22 July 2003 Structural integrity monitoring of aircraft panels using a distributed Bragg grating sensing technique

Dawn K. Gifford, Brooks A. Childers, Roger G. Duncan, Anthony C. Jackson, Surendra Shaw, William Schwienberg, James Mazza

Author Affiliations +

Proceedings Volume 5050, Smart Structures and Materials 2003: Smart Sensor Technology and Measurement Systems; (2003) https://doi.org/10.1117/12.508072
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

We report the use of a fiber-optic distributed sensing system to monitor crack growth on aircraft panels. The system utilizes optical frequency domain reflectometry to demodulate the reflected signals from up to thousands of weakly reflecting gratings photoetched along a single optical fiber. In our experiment, data from a regular array of sensors attached to an aircraft panel were recorded as the panel was subjected to increasing loads. Strain contour maps generated from these data enable clear visualization of the crack growth over time. A similar experiment was also performed using fiber-optic strain sensors embedded in aircraft composite repair patches. The results of these experiments demonstrate the viability of distributed fiber-optic sensing for crack growth monitoring.

Citation Download Citation

Dawn K. Gifford, Brooks A. Childers, Roger G. Duncan, Anthony C. Jackson, Surendra Shaw, William Schwienberg, and James Mazza "Structural integrity monitoring of aircraft panels using a distributed Bragg grating sensing technique", Proc. SPIE 5050, Smart Structures and Materials 2003: Smart Sensor Technology and Measurement Systems, (22 July 2003); https://doi.org/10.1117/12.508072

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available