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US 5,490,426 AGranted
Method for detecting stresses
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsTohru Shiga, Akane Okada, Hideroh Takahashi, Toshio Kurauchi
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Abstract
A method for detecting stresses includes the steps of dispersing a fluorescent substance in a solid portion where stresses are to be detected, measuring fluorescence decay time of the fluorescent substance dispersed in the solid portion, and detecting stresses in the solid portion based on the measured fluorescence decay time. The method enables to non-destructively detect stresses in resin-molded products without impairing their mechanical properties.
Claims15
A method for detecting stresses, comprising the steps of:
- dispersing a fluorescent substance in a solid portion of an object where stresses are to be detected;
- measuring fluorescence decay times exhibited by said dispersed fluorescent substance;
- and
- detecting stresses in said solid portion based on the measured fluorescence decay times.
1 more element
Dependencies are inferred from the claim text.