RESONANCE CHARACTERISTICS OF THE SORPTION FIBER OPTIC PIEZOELECTROLUMINESCENT SENSOR

A mathematical electro-mechanical model of a representative fragment gas-analytical optical fiber piezoelectroluminescent sensor with special external absorption layer for monitoring extended areas has been developed. Informative light signal is generated as result mechanoluminescent effect caused by contact interaction piezoelectric and electroluminescent cylindrical layers (coatings) in case forced electromechanical vibrations under action applied harmonic control electric voltage. The algorithm finding the sorption spectrum (changes density along length sensor) presented through solution Fredholm integral equation based on results measuring informative intensity at output from sensor. Numerical coupled stationary boundary value problem electroelasticity implemented. Natural frequencies shapes oscillations were found taking into account geometric shape, relative location anisotropy electroelastic properties its structural elements, including characteristics layer. Regularities influence diagnosed values resonance different forms revealed.