Triple-material stress-strain resistivity gage

Title: Triple-material stress-strain resistivity gage

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Abstract

A triple material piezoresistive gage provides multi-component elastic stress or strain measurements. Thin foils of three piezoresistive materials, e.g., ytterbium, manganin, and constantan, are configured in a nested serpentine rectilinear grind or other grind 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 gage. Each resistivity change is independent of the others so that three diagonal components of the elastic stress or strain tensor can be calculated form the resistivity measurements. 4 figs.

Inventors:: Stout, R B

Issue Date:: 1987-05-19

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

OSTI Identifier:: 6747311

Patent Number(s):: 6051560

Assignee:: LLNL; ERA-14-001476; EDB-88-185940

Patent Classifications (CPCs):: A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61K - PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES

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A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61K - PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
A61K2300/00 - Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
A61K31/715 - Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages
A61K9/0048 - {Eye, e.g. artificial tears}

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 47 OTHER INSTRUMENTATION; ELECTRONIC EQUIPMENT; DESIGN; EQUATIONS; INVENTIONS; PIEZOELECTRICITY; SHOCK WAVES; STRAIN GAGES; STRESSES; UNDERGROUND; ELECTRICITY; EQUIPMENT; LEVELS; MEASURING INSTRUMENTS; 420800* - Engineering- Electronic Circuits & Devices- (-1989); 440300 - Miscellaneous Instruments- (-1989)

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                    Stout, R B. Triple-material stress-strain resistivity gage.  United States: N. p., 1987. 
        Web.

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                    Stout, R B. Triple-material stress-strain resistivity gage.  United States.

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                    Stout, R B. Tue .  
        "Triple-material stress-strain resistivity gage".  United States.

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@article{osti_6747311,

  title        = {Triple-material stress-strain resistivity gage},

  author       = {Stout, R B},

  abstractNote = {A triple material piezoresistive gage provides multi-component elastic stress or strain measurements. Thin foils of three piezoresistive materials, e.g., ytterbium, manganin, and constantan, are configured in a nested serpentine rectilinear grind or other grind 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 gage. Each resistivity change is independent of the others so that three diagonal components of the elastic stress or strain tensor can be calculated form the resistivity measurements. 4 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {5}

}

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