| Popis: |
Mechanoluminescence of a composite material on the basis of polymethyl methacrylate and finely dispersed powders of SrAl 2 O 4 :(Eu2+, Dy3+) and Sr 4 Al 14 O 25 :(Eu2+, Dy3+, B) phosphor ware investigated. The mechanoluminescence of the composite layer was excited under the action of a mechanical striker, short laser pulse in air and water and dynamic pressure of the stylus sliding over the mechanoluminescent layer surface. It was shown that composite material with Sr 4 Al 14 O 25 :(Eu2+, Dy3+, B) powder did not show mechanoluminescent properties. It was shown that the excitation of mechanoluminescence in water begins at a much lower power density of laser pulses than in air. The produced composite layer is shown to exhibit high efficiency of “mechano-optical” transformation and can be used for recording and visualizing mechanical effects in mechatronic systems. |
