Measuring and testing – Ductility or brittleness
Patent
1974-03-25
1976-01-20
Goldstein, Herbert
Measuring and testing
Ductility or brittleness
73141A, 73398R, G01L 102
Patent
active
039330346
ABSTRACT:
A hydrostatic stress gage including a sphere of incompressible fluid having positioned inside a drum like structure containing a pair of interconnected flat spiral coils forming a self-resonant tuned circuit, a change in pressure on the sphere will cause a variation in distance between the coils whereby changing the resonant frequency, when measured by an appropriate device stress may be measured.
REFERENCES:
patent: 2548947 (1951-04-01), Clewell
patent: 2703491 (1955-03-01), Goetz
patent: 3517550 (1970-06-01), Leventhal
Hobbs John V.
Noel James S.
Webb Leonard D.
Ciarlante Anthony V.
Goldstein Herbert
Miller Henry S.
Rusz Joseph E.
The United States of America as represented by the Secretary of
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