Title: Standardization of penetrating radiation testing system

Abstract: Standardization is provided to control system gain of a penetrating radiation testing system by periodically inspecting a reference object in the same manner as the product samples so as to generate a stabilization signal which is compared to a reference signal. The difference, if any, between the stabilization signal and the reference signal is integrated and the integrated signal is used to correct the gain of the system.

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Inventors: Wiley, Philip A. (Boxboro, MA, US)
Aronson, Herbert L. (Newton, MA, US)

Application Number: 792061
Filing Date: 1977-04-28
Publication_date: 1979-05-15
Assignee: Bedford Engineering Corp. (Bedford, MA)
Primary Class(es): 378/89 209/589, 209/592, 209/905, 250/252.1
Other Classes:
US Patent Ref:

2885557	May, 1959	Kizaur	209/111.
2939960	Jun, 1960	Gunn	250/252.
3198944	Aug, 1965	Furbee	250/272.
3361911	Jan, 1968	Kowalczyuski	250/272.
3382975	May, 1968	Hoover	209/111.
3880750	Apr, 1975	Butler et al.	209/111.
4009376	Feb, 1977	Faraguet	250/252.
4060726	Nov, 1977	Luitwieler et al.	250/252.

Other Refs:
Primary Examiner: Rolla, Joseph J.
Assistant Examiner:
Attorney: Schiller & Pandiscio