A diagnostic method for a multi-layer material
A method enabling the visualisation of cracking and stresses in multilayer material is described. This is achieved by providing the intermediate layer (12) of the multilayer material (10) with different fluorescent dyes (15,15'), eg lumilux yellow/green CD343, blue CD312, printed on different s...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A method enabling the visualisation of cracking and stresses in multilayer material is described. This is achieved by providing the intermediate layer (12) of the multilayer material (10) with different fluorescent dyes (15,15'), eg lumilux yellow/green CD343, blue CD312, printed on different sides of the intermediate layer. By analysing the fluorescence emitted by the dyes when excited by an appropriate source of electromagnetic radiation it is possible to determine cracking and/or fissures in the multilayer material. A multilayer material adapted for applying the method is also described. |
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