Dynamic visualization of stress distribution by mechanoluminescence image

We report the realization of the dynamic image of stress distribution by developing a remarkably strong mechanoluminescence (ML) material of Sr0.975Al2O3.985:Eu0.01, which can emit four orders of magnitude larger intensity than that of the reported strong ML material of quartz crystal. This ML material can be mixed in the target composite or coated on the surface to sense stress by emitting visible light. This method is applicable to the dynamic visualization of stress distribution in a solid not only in the atmosphere but also in an aqueous environment.

[1]  J. Dickinson,et al.  Recombination on fractal networks: Photon and electron emission following fracture of materials , 1993 .

[2]  B. P. Chandra.  Luminescence induced by moving dislocations in crystals , 1996 .

[3]  A. Krell,et al.  Fracture-induced photon emission of aluminium oxide and its application to fracture mechanical investigations , 1982 .

[4]  M. Rosenblatt,et al.  Triboluminescence spectra of organic crystals are sensitive to conditions of acquisition , 1992 .

[5]  M. Rossberg,et al.  Progress in triboluminescence of alkali halides and doped zinc sulphides (II) , 1970 .

[6]  S. Timoshenko,et al.  Theory of elasticity , 1975 .

[7]  B. T. Brady,et al.  Laboratory investigation of the electrodynamics of rock fracture , 1986, Nature.

[8]  Chao-Nan Xu,et al.  Development of Strongly Adherent Triboluminescent Zinc Sulfide Films on Glass Substrates by Ion Plating and Annealing , 1999 .

[9]  J. Zink,et al.  Acetone-induced triboluminescence of triphenylphosphine , 1992 .

[10]  T. Jaaskelainen,et al.  OPTICS 1639 A novel approach to electrochromism in WO3 thin film using piezoelectric ceramics for power supply , 1997 .

[11]  Chao-Nan Xu,et al.  Direct view of stress distribution in solid by mechanoluminescence , 1999 .

[12]  G. Alzetta,et al.  Excitation of triboluminescence by deformation of single crystals , 1970 .

[13]  Shiro Kubo,et al.  Visualization of contact stress distribution using infrared stress-measurement system , 1997, Defense, Security, and Sensing.

[14]  G. Reynolds.  Piezoluminescence from a ferroelectric polymer and quartz , 1997 .

[15]  C. T. Butler.  Room-Temperature Deformation Luminescence in Alkali Halides , 1966 .

[16]  Nobuyoshi Takeuchi,et al.  A New Long Phosphorescent Phosphor with High Brightness, SrAl2 O 4 : Eu2 + , Dy3 + , 1996 .

[17]  Toichi Okada,et al.  Theory of deformation luminescence in KCl crystal , 1990 .