Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-01-01

Journal: MEASUREMENT

Included Journals: EI、SCIE

Volume: 47

Issue: 1

Page Number: 698-706

ISSN: 0263-2241

Key Words: Structural health monitoring; Simultaneous measurement of strain and temperature; Temperature compensation; Brillouin optical fiber sensor; Hybrid local and distributed optical fiber sensing system

Abstract: Structure multi-parameters measurement, such as strain, displacement, corrosion and temperature, is of the utmost importance for structural health monitoring. Meanwhile uncoupling method of temperature and strain has still a technical problem in structure sensing measurement. In this paper, we proposed a method for simultaneous measurement of strain and temperature using a hybrid local and distributed optical fiber sensing system. The principle of the method is investigated and then validated by the theoretical simulation experiments and tensile tests in laboratory. Furthermore, one experiment for internal force measurement of a smart stranded wire, under the interaction of temperature and strain, is also conducted in lab. The experimental results show that the strain and temperature can be well measured simultaneously by using one multi-signal optical fiber sensor. (C) 2013 Elsevier Ltd. All rights reserved.