New design for temperature-strain discrimination using fiber Bragg gratings embedded in laminated composites

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Rodriguez Cobo, L (Author) Other; Marques, AT (Author) Other; Lopez Higuera, JM (Author) Other; Santos, JL (Author) FCUP; Frazao, O (Author) FCUP

Journal

Title: Smart Materials and Structures

Vol. 22

Final page: 105011

ISSN: 0964-1726

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 5 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-006-71D

DOI: 10.1088/0964-1726/22/10/105011

Abstract (EN): A new smart structure based on fiber Bragg gratings (FBGs) embedded into composite laminates for temperature and strain simultaneous measurement has been designed and experimentally tested. Two holes have been drilled at preset locations in the composite plate to create different strain sensitivities at different locations. The proposed design has been compared to three reference sensing heads also based on embedding FBGs into composite materials. Experimental results agree remarkably well with mechanical simulations and validate all the tested designs for the temperature-strain discrimination. Based on the same principle, another sensing head with a long single FBG embedded has also been designed and experimentally tested, obtaining temperature independent strain measurement.

Language: English

Type (Professor's evaluation): Scientific