title   
  

Monitoring damage state of fiber reinforced composites using an FBG network for failure prediction

Kocaman, Esat Selim and Akay, Erdem and Yılmaz, Çağatay and Türkmen, Halit S. and Mısırlıoğlu, Burç and Suleman, Afzal and Yıldız, Mehmet Monitoring damage state of fiber reinforced composites using an FBG network for failure prediction.

[img]PDF - Repository staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
2401Kb

Abstract

A structural health monitoring (SHM) study of biaxial glass fiber reinforced epoxy matrix composites under a constant, high strain uniaxial fatigue loading is performed using Fiber Bragg Grating (FBG) optical sensors embedded in composites at various locations to monitor the evolution of local strains thereby understanding damage mechanisms. Concurrently, the temperature changes of the samples during the fatigue test have also been monitored at the same locations. Close to fracture, significant variations in local temperatures and strains are observed and it is shown that the variations in temperature and strain can be used to predict imminent fracture. It is noted that the latter information cannot be obtained using external strain gages, which underlines the importance of tracking of local strains internally.

Item Type:Article
Uncontrolled Keywords:Polymer-matrix composites; Fatigue; Mechanical testing; Damage Monitoring; Fiber Bragg Grating
Subjects:UNSPECIFIED
ID Code:30802
Deposited By:Mehmet Yıldız
Deposited On:02 Nov 2016 16:04
Last Modified:02 Nov 2016 16:04

Repository Staff Only: item control page