Research papers -
Feasibility Study on Measuring Axial and Transverse Stress/Strain Components in Composite Materials using Bragg Sensors
G. Luyckx, J. Degrieck, W. De Waele, W. Van Paepegem, J. Van Roosbroeck, K. Chah, J. Vlekken, I. McKenzie, A. Obst
Short description
A fibre optic sensor design is proposed for simultaneously measuring the 3D stress (or strain) components and temperature inside thermo hardened composite materials. The sensor is based on two fibre Bragg gratings written in polarisation maintaining fibre. Based on calculations of the condition number, it will be shown that reasonable accuracies are to be expected. First tests on the bare sensors and on the sensors embedded in composite material, which confirm the expected behaviour, will be presented.
Details:
Category
Asset monitoring
Industry
Composites, Aerospace