FIELD: monitoring and measurement equipment.
SUBSTANCE: invention relates to instrumentation and can be used to create elements for visualization, recording and research of mechanical effects of a complex spatial shape as a function of time. Claimed method of creating mechanoluminescent sensing elements for visualization and measurement of fields of dynamic mechanical stresses and shock loads is that a mechanically luminescent composite layer sensitive to mechanical influences is formed by dissolving the surface layer of a transparent in the visible region of the spectrum of a substrate of polymethylmethacrylate in dichloroethane and incorporation into the resultant solution of microparticles of a phosphor powder SrAl2O4:(Eu2+, Dy3+). In this case, after 10–15 minutes after the formation of a liquid layer of polymethylmethacrylate in dichloroethane, a thin layer of a mechanoluminescent finely dispersed powder of a phosphor SrAl2O4:(Eu2+, Dy3+) a thickness of 20–200 mcm, and then cover this layer with an even and smooth plate made of a material that does not dissolve in dichloroethane, thereby ensuring, as a result of the diffusion of the phosphor microparticles into the solution in the surface layer of a transparent polymethylmethacrylate substrate, the formation of a mechanoluminescent composite layer based on polymethyl methacrylate and a mechanoluminescent powder of a fluophor SrAl2O4:(Eu2+, Dy3+) a thickness of 30–250 mcm. After solidification of the liquid surface layer, the plate is removed.
EFFECT: obtaining reliable, having a large working life of mechanoluminescent coatings (sensors) for visualization and measurement of mechanical effects of arbitrary shape and time dependence.
3 cl, 2 dwg
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Authors
Dates
2018-09-06—Published
2017-11-21—Filed