Method of using embedded normal stress sensors in propellant gra

Details Method of using embedded normal stress sensors in propellant gra Method of using embedded normal stress sensors in propellant gra

1977-08-11

1978-10-17

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

73116, 73765, G01L 122

Patent

active

041201957

ABSTRACT:
An embedded stress sensor gage for use in solid fuel rocket motors and the like consisting of a modified bridge circuit containing temperature sensitive resistive elements and a pair of series connected resistors coupled in parallel with the bridge. A comparison of the voltage at the midpoint of the series connected resistors and the output voltage of the bridge and the voltages at the active resistive elements provides information from which it is possible to determine the change in gage element resistance for each temperature and stress condition.

REFERENCES:
patent: 3245252 (1966-04-01), First et al.
patent: 3922597 (1975-11-01), Nagase

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