Triple-material stress-strain resistivity gage

Patent · Thu Dec 31 23:00:00 EST 1987

OSTI ID:866587

Stout, Ray B ^[1]

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1. Livermore, CA

A triple material piezoresistive gage provides multi-component elastic stress or measurements. Thin foils of three piezoresistive materials, e.g. ytterbium, manganin, and constantan, are configured in a nested serpentine rectilinear grid or other grid arrangement and embedded in a medium, preferably normal to the direction of shock wave propagation. The output of the gage is a resistivity change history for each material of the gage. Each resistivity change is independent of the others so that three diagonal components of the elastic stress or strain tensor can be calculated from the resistivity measurements.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4744252
• OSTI ID: 866587
• Country of Publication: United States
• Language: English

Related Subjects

/73/
arrangement
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diagonal
direction
elastic
embedded
foils
gage
grid
history
independent
manganin
material
materials
measurements
medium
multi-component
nested
normal
output
piezoresistive
preferably
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provides
rectilinear
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shock
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stress-strain
tensor
triple
triple-material
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ytterbium