Damage detection in composite materials structures under variable loads conditions by using fiber Bragg gratings and principal component analysis, involving new unfolding and scaling methods-Reference-Cited by-同舟云学术

Damage detection in composite materials structures under variable loads conditions by using fiber Bragg gratings and principal component analysis, involving new unfolding and scaling methods

Published:2014-07-10 Issue:11 Volume:26 Page:1346-1359
ISSN:1045-389X
Container-title:Journal of Intelligent Material Systems and Structures
language:en
Short-container-title:Journal of Intelligent Material Systems and Structures

Author:

Sierra-Pérez Julián¹,Güemes Alfredo²,Mujica Luis E³,Ruiz Magda³

Affiliation:

1. Aerospace Engineering Research Group, Universidad Pontificia Bolivariana, Medellín, Colombia

2. Department of Aerospace Materials and Processes, Universidad Politécnica de Madrid, Madrid, Spain

3. Department of Applied Mathematics III, EUETIB Universitat Politécnica de Catalunya BarcelonaTech, Barcelona, Spain

Abstract

An innovative methodology based on the use of fiber Bragg gratings as strain sensors and strain field pattern recognition is proposed for damage detection in composite materials structures. The strain field pattern recognition technique is based on principal component analysis. Damage indices ( T2 and Q) and detection thresholds are presented. New techniques for unfolding and scaling tridimensional matrices arrays obtained from structures working under variable load conditions are presented.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

Link

http://journals.sagepub.com/doi/pdf/10.1177/1045389X14541493

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