Real-Time Monitoring of Dynamic Stress Concentration by Mechanoluminescent Sensing Film
In this paper, we demonstrate that a dynamic stress concentration around Lüders band can be directly displayed using mechanoluminescence (ML) sensing film of SrAl2O4:Eu (SAO) coated on the surface of metal. Uniaxial tensile test of an aluminum alloy (2.5% Mg) plate coated with the SAO sensing film was performed and the ML images were recorded using a high-speed camera. Captured ML images confirmed the formation and propagation of Lüders band clearly in real time.
J.M. Dulieu-Barton, J.D. Lord and R.J. Greene
C. Li et al., "Real-Time Monitoring of Dynamic Stress Concentration by Mechanoluminescent Sensing Film", Applied Mechanics and Materials, Vols. 13-14, pp. 247-250, 2008