Paper
14 April 2011 Pipeline monitoring using an integrated MFC/FBG system
Hyeonseok Lee, Hoon Sohn, Hyun Woo Park
Author Affiliations +
Abstract
This study proposes a new hybrid macro fiber composite/fiber Bragg grating (MFC/FBG) system that can excite and measure guided waves for pipeline monitoring using a single laser source and optical cables removing the need for conventional wire cables. Among various ultrasonic transducers, piezoelectric transducers and FBG sensors have been widely used because of their light weight, non-intrusive nature and compactness. Particularly for pipeline monitoring, a MFC transducer among other piezoelectric transducers is used because of its flexibility and conformability to a curved surface. In addition, conventional electric cables needed for power and data transmission are all replaced by optical cables, alleviating problems such as electromagnetic interference, signal attenuation and vulnerability to noise. A tunable laser is used as a common power source for guided wave generation and sensing. One of two laser beams split from the tunable laser, is used to actuate MFC transducers, and the other beam is used with FBG sensors to measure generated guided waves. The measured signals are processed to identify the existence of defects in pipeline structures such as wall thinning and longitudinal cracks. The feasibility of the proposed hybrid measurement system has been experimentally verified in a laboratory setup.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hyeonseok Lee, Hoon Sohn, and Hyun Woo Park "Pipeline monitoring using an integrated MFC/FBG system", Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79812G (14 April 2011); https://doi.org/10.1117/12.880998
Lens.org Logo
CITATIONS
Cited by 1 scholarly publication.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Fiber Bragg gratings

Waveguides

Transducers

Sensors

Microsoft Foundation Class Library

Tunable lasers

Photodiodes

Back to Top