Fiber optic Bragg intra-grating strain gradient sensing

Michel LeBlanc; Shang Yuan Huang; Raymond M. Measures

doi:10.1117/12.207668

20 April 1995 Fiber optic Bragg intra-grating strain gradient sensing

Michel LeBlanc, Shang Yuan Huang, Raymond M. Measures

Proceedings Volume 2444, Smart Structures and Materials 1995: Smart Sensing, Processing, and Instrumentation; (1995) https://doi.org/10.1117/12.207668
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

By looking at the full reflection spectrum of a Bragg grating strain sensor, one cal tell when strain gradients are presented along the sensing length and estimate their magnitude. Furthermore, if certain conditions of monotonicity of the strain profile along the sensor are met, complex strain profile shapes can be interpreted from the grating's spectrum. We show how this technique can be applied to the study of the strain transfer at the tip of an embedded fiber. A fiber embedded in epoxy was loaded up to 2.5% strain, which induced fiber end-zone damage. The strain profile along the fiber, estimated from the reflection spectrum of the grating, gives details about the failure process which could not be obtained by any other known method.

Citation Download Citation

Michel LeBlanc, Shang Yuan Huang, and Raymond M. Measures "Fiber optic Bragg intra-grating strain gradient sensing", Proc. SPIE 2444, Smart Structures and Materials 1995: Smart Sensing, Processing, and Instrumentation, (20 April 1995); https://doi.org/10.1117/12.207668

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