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The sensitivity of a polarimetric sensor embedded in unidirectional and cross-ply composite laminates

Wang, H, Ogin, SL, Thorne, AM, Reed, GT and Ussorio, M (2007) The sensitivity of a polarimetric sensor embedded in unidirectional and cross-ply composite laminates SMART MATERIALS & STRUCTURES, 16 (3). pp. 642-649.

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Abstract

Matrix cracking in composite laminates is the first macroscopic damage mode to be readily detected. Polarimetric sensors embedded in composite laminates can detect the development of this damage and they have an advantage over other sensors in being able to sense damage over long gauge lengths (potentially, many metres). In this paper, the sensitivity of a polarimetric sensor manufactured from Hi-Bi PANDA fibre has been measured experimentally and a phase-strain model available in the literature has been used to determine the characteristic parameters of the sensor. The sensitivity of such sensors embedded in unidirectional composites is shown to be in good agreement with theoretical predictions, allowing for material non-uniformity. In the case of cross-ply laminates, which are transversely anisotropic, it is shown that sensor sensitivity is dependent on the relationship of the sensor axes to the composite axes, as well as on the degree of sensor twist. Maximum sensitivity is obtained for a combination of low twist angle and congruence between the sensor optical axes and the composite axes. Twist angles of greater than 90° give rise to sensitivities, which, although lower, are reasonably constant and approximately the same as the sensitivity of the sensor in a unidirectional composite.

Item Type: Article
Subjects : Mechanical Engineering Science
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Wang, HUNSPECIFIEDUNSPECIFIED
Ogin, SLUNSPECIFIEDUNSPECIFIED
Thorne, AMUNSPECIFIEDUNSPECIFIED
Reed, GTUNSPECIFIEDUNSPECIFIED
Ussorio, MUNSPECIFIEDUNSPECIFIED
Date : 1 June 2007
Identification Number : https://doi.org/10.1088/0964-1726/16/3/011
Copyright Disclaimer : © 2007 IOP Publishing Ltd
Uncontrolled Keywords : Science & Technology, Technology, Instruments & Instrumentation, Materials Science, Multidisciplinary, Materials Science, INSTRUMENTS & INSTRUMENTATION, MATERIALS SCIENCE, MULTIDISCIPLINARY, OPTICAL-FIBER SENSORS, BRAGG GRATING SENSORS, MATRIX CRACKS
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 11 Nov 2016 13:03
Last Modified : 11 Nov 2016 13:03
URI: http://epubs.surrey.ac.uk/id/eprint/797490

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