Reliability of ultrahigh sensitivity optical fiber sensors embedded in graphite composites

Kevin R. Uleck; M. J. Fox; Anthony J. Vizzini; E. Joseph Friebele; Heather J. Patrick; Barbara M. Wright; A. S. Greenblatt; W. R. Simon

doi:10.1117/12.388141

12 June 2000 Reliability of ultrahigh sensitivity optical fiber sensors embedded in graphite composites

Kevin R. Uleck, M. J. Fox, Anthony J. Vizzini, E. Joseph Friebele, Heather J. Patrick, Barbara M. Wright, A. S. Greenblatt, W. R. Simon

Author Affiliations +

Proceedings Volume 3986, Smart Structures and Materials 2000: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials; (2000) https://doi.org/10.1117/12.388141
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

Fiber cavity etalon (FCE) sensors have demonstrated ultrahigh static strain sensitivity (~1 nε) when they are either surface-mounted to, or embedded, in graphite reinforced resin composites. Although a significant amount of data has been acquired at very low strain, little is known about their performance and durability in typical installations. Graphite/epoxy composite test specimens were fabricated to address practical concerns and to evaluate the reliability of embedded FCE sensors. Two different specimen configurations using two different composite fabrication methods were selected for sample installations: thin flat laminates and cylindrical struts. After fabrication, the FCE sensors were interrogated to ensure that they were still intact, to record a baseline response, and to determine any changes in response that might have occurred during manufacturing. Next, to determine the survivable strain limits of the embedded sensor, the specimens were loaded in tension to a predetermined strain level, unloaded, and then interrogated. Once these limits were found, the specimens were subjected to cyclic loading and periodically interrogated until sensor failure. The results from these tests provide practical strain limits for the embedded FCE sensor and show that the response does not change as a result of tensile cyclic loading.

Citation Download Citation

Kevin R. Uleck, M. J. Fox, Anthony J. Vizzini, E. Joseph Friebele, Heather J. Patrick, Barbara M. Wright, A. S. Greenblatt, and W. R. Simon "Reliability of ultrahigh sensitivity optical fiber sensors embedded in graphite composites", Proc. SPIE 3986, Smart Structures and Materials 2000: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (12 June 2000); https://doi.org/10.1117/12.388141

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