System and method for using a dual modality detector for inspect

Details System and method for using a dual modality detector for inspect System and method for using a dual modality detector for inspect

1994-10-03

1996-05-21

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Neutron responsive means

2503851, 378 63, G01T 1185, G01T 300, G01N 2309

Patent

active

055192254

ABSTRACT:
A system and method for using the detector to differentiate neutron attenuating material from high x-ray attenuating material in an object. The inspection system is used to detect the presence of nitride in titanium sponge nuggets or residual core material in a hollow-cast turbine engine blades. The inspection system uses a dual radiation source to alternately emit neutrons and x-rays or gamma rays at the object under inspection. A dual modality gas ionization detector detects the radiation passing through the object and sends the detected radiation to a processing means for image generation. The generated image is displayed on a display, enabling objects formed with low and high attenuating material to be distinguished.

REFERENCES:
patent: 4570071 (1986-02-01), Sippel et al.
patent: 4587555 (1986-05-01), Carollo et al.
patent: 4864142 (1989-09-01), Gomberg

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