Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1978-09-05
1979-11-27
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73141A, 73726, G01L 1100
Patent
active
041754450
ABSTRACT:
A pressure sensing apparatus for measuring ice pressure forces while embedded in an ice pack is disclosed. The pressure sensing apparatus is thin in comparison to its width and length, having a stiffness similar to the average anticipated stiffness of the embedding material. The apparatus includes a housing having a first and second substantially flat plate connected at their outer edges and sensitive to external ice pressure forces. A thin member is supported within the housing between the first and second plate by a plurality of standoffs or ribs which subjected the member to reverse curvature bending upon the application of external pressures to the first and second plates. Wire resistance strain gauges are attached to the thin member to measure the strain of the member when subjected to the bending. In this manner, the pressure against the sensor can be correlated with the strain measurements resulting on the member.
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Nelson, R. D. et al., Techniques for Measuring Stress in Sea Ice, University of Alaska, Sea Grant No. 77-1, Jan. 1977.
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Delflache Marc L.
Exxon Production Research Company
Myracle Jerry W.
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