Measuring and testing – Volume or rate of flow – System
Patent
1979-09-24
1982-02-23
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
System
G01K 1700, G01J 500
Patent
active
043163874
ABSTRACT:
The invention herein is a method and apparatus for passively measuring and recording the thermal fluence from radiative heat sources. This is a non-electronic apparatus that includes a transducer whose sensing elements include a stack of thin sheets of stretched polystyrene. Each of the sheets of polystyrene are essentially opaque to infra-red radiation and upon exposure to a radiative heat source, soften and shrink as a function of the trapped bi-directional stresses within the sensing element material. These plastic elements integrate the time dependent thermal flux, i.e., they deform in direct proportion to the total incident fluence. This transducer is also direction dependent and has the ability to record the direction of the peak incident thermal fluence. Such a transducer is useful in mapping the incident heat input to large structures exposed to simulated nuclear and other types of intense thermal radiation.
REFERENCES:
patent: 3569995 (1971-03-01), Mallon et al.
patent: 3905228 (1975-09-01), Smith
Goldstein Herbert
Jones Allston L.
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