Development of miniature load sensors for smart materials and structures by using birefringent fibers

Tatsuro Kosaka; Nobuo Takeda; Masaki Hara

doi:10.1117/12.349748

31 May 1999 Development of miniature load sensors for smart materials and structures by using birefringent fibers

Tatsuro Kosaka, Nobuo Takeda, Masaki Hara

Proceedings Volume 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials; (1999) https://doi.org/10.1117/12.349748
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

Mode couplings between x and y-polarized modes in a birefringent optical fiber are strongly influenced by transverse loads. Then, it is considered to develop miniature load sensors by using a birefringent optical fiber. This sensor can be integrated into a serial-multiplexed fiber optic sensor system. Some fundamental experiments to obtain the design concept of load sensors were conducted. Experimental results showed that a relation between a mode coupling and a transverse load was almost linear on a logarithmic graph. It was shown that the linear elastic coating was necessary for reproducible measurements. The model couplings strongly depended upon the loading angle and the loading section length. From these experimental results, the design concept of stable, reproducible and quantitative sensors was obtained. A module model of load sensor was developed under this concept and demonstrated for verification of the concept. It was found that the sensor module had good performance for quantitative measurement of transverse loads. For practical use, three types of miniature load sensor modules, whose size and shape of the load sensor were improved for integration into a smart structure system, were developed. It was demonstrated that these senors had capability of quantitative measurement.

Citation Download Citation

Tatsuro Kosaka, Nobuo Takeda, and Masaki Hara "Development of miniature load sensors for smart materials and structures by using birefringent fibers", Proc. SPIE 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (31 May 1999); https://doi.org/10.1117/12.349748

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