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Title: Triple-material stress-strain resistivity gage

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:
Issue Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
6747311
Patent Number(s):
-US-A6051560
Assignee:
LLNL; ERA-14-001476; EDB-88-185940
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)

Citation Formats

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