Dual-sensitivity dyed liquid tracers
Abstract
Abstract A LIQUID TRACER COMPOSITION, SUCH AS AN INSPECTION PENETRANT, A SURFACE COATING COMPOUND, OR A MARKING MATERIAL, IN WHICH A NONFLUORESCENT INDICATOR DYE AND A FLUORESCENT INDICATOR DYE ARE USED SIMULTANEOUSLY IN THE SAME TRACER MIXTURE TO PROVIDE TWO DIFFERENT LEVELS OF DIMENSIONAL SENSITIVITY, WHEREBY DIFFERENT THICKNESSES OF FILMS OF THE TRACER COMPOSITION WILL EXHIBIT DISCERNIBLE DIFFERENCES IN NONFLUORESCENT OF FLUORESCNET COLOR RESPONSE. THE COMPOSITIONS OF THE INVENTION ARE ESPECIALLY USEFUL IN "DUAL-SENSITIVITY INSPECTION PENETRANTS," FOR EXAMPLE, WHERE RELATIVELY LARGE SURFACE CRACKS MAY BE REVEALED AS VISIBLE NONFLUORESCNET COLOR INDICATIONS, WHILE MICRO-FINE SURFACE CRACKS ARE REVEALED AS FLUORESCENT INDICIATIONS.
Inventors
- 👤 James R Alburger
Bibliographic Details
Claims Analysis
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