Long-gauge strain sensors for underwater and deep-water applications

Daniele Inaudi

doi:10.1117/12.887336

17 May 2011 Long-gauge strain sensors for underwater and deep-water applications

Daniele Inaudi

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77535R (2011) https://doi.org/10.1117/12.887336
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

The evaluation of the structural performance of marine structures, such as ship hulls, off-shore platforms and risers requires the monitoring of the static and dynamic strain levels undergone during the whole lifetime. In these environments, the use of passive fiber optic sensors presents advantages in terms of reliability and multiplexing ability. Frequently used structural materials, such as steel and composites, exhibit local defects or discontinuities, such as welds, thickness / diameter variations, marine growths and cracks, introducing discontinuities in the mechanical properties of the material at a local level. Yet, the properties of the material at a global level are more indicative for structural behavior. Therefore, for structural monitoring purposes, it is necessary to use sensors that are insensitive to local material discontinuities. A long-gauge strain or deformation sensor, by definition, is a sensor with a gauge-length several times larger than the maximal distance between discontinuities or the maximal diameter of defects in the monitored material. In this paper we will present the design, testing and applications of a long-gauge fiber optics strain sensor for underwater applications.

Citation Download Citation

Daniele Inaudi "Long-gauge strain sensors for underwater and deep-water applications", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77535R (17 May 2011); https://doi.org/10.1117/12.887336

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