Compositions for use in methods for non-destructive testing of m

Details Compositions for use in methods for non-destructive testing of m Compositions for use in methods for non-destructive testing of m

1996-11-20

1998-08-18

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Process or composition for determination of physical state...

Surface area, porosity, imperfection, or alteration

2524081, C09K 1107

Patent

active

057957126

ABSTRACT:
A non-destructive testing method for revealing surface and through defects in materials and articles. The method comprises filling up defects with a volatile penetrant, applying indicator material to a surface to be tested, removing the indicator material from the surface and registrating defects according to the presence color spots, shapes and dimensions which are functions of shapes and dimensions of real defects. The indicator material comprises a gas-permeable base with applied sulfonephthalein indicator in the range of 10.sup.-4 to 10.sup.-3 grams per 1 cubic centimeter of the base.

REFERENCES:
patent: 1753301 (1930-04-01), Pitschner
patent: 2007285 (1935-07-01), Schauffele et al.
patent: 2310111 (1943-02-01), Nordlander
patent: 3464796 (1969-09-01), Friedlander
patent: 3830094 (1974-08-01), Leger

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