Radiation gauge for determining weight percentages of the consti

Details Radiation gauge for determining weight percentages of the consti Radiation gauge for determining weight percentages of the consti

1985-05-28

1987-05-26

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

250393, 250394, 250395, 378 53, G01N 2308

Patent

active

046688676

ABSTRACT:
A sample 10 of a composite material, such as a graphite-epoxy composite, is exposed to radiation in three distinct energy bands emanating from sources 12, 13 and 14, respectively. Corresponding detectors 16, 17 and 18 are positioned to measure the amount of energy in each band transmitted through the sample. Weight percentages of three different constituents of the sample 10 are calculated from a relatively simple algorithm whose variables include a ratio for each of said energy bands of the amount of energy that would be detected if the sample were not present in the radiation to the amount of energy transmitted through the sample when the sample is exposed to the radiation.

REFERENCES:
patent: 3082323 (1963-03-01), Chope et al.
patent: 3655964 (1972-04-01), Slight
patent: 4363968 (1982-12-01), McGowan et al.
patent: 4577337 (1986-03-01), Light

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