Method and apparatus for measuring stress
Abstract
A method and apparatus for determining stress in a material independent of micro-structural variations and anisotropies. The method comprises comparing the velocities of two horizontally polarized and horizontally propagating ultrasonic shear waves with interchanged directions of propagation and polarization. The apparatus for carrying out the method comprises periodic permanent magnet-electromagnetic acoustic transducers for generating and detecting the shear waves and means for determining the wave velocities.
- Inventors:
-
- Ames, IA
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- OSTI Identifier:
- 865473
- Patent Number(s):
- 4522071
- Application Number:
- 06/518,243
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; apparatus; measuring; stress; determining; material; independent; micro-structural; variations; anisotropies; comprises; comparing; velocities; horizontally; polarized; propagating; ultrasonic; shear; waves; interchanged; directions; propagation; polarization; carrying; periodic; permanent; magnet-electromagnetic; acoustic; transducers; generating; detecting; means; wave; ultrasonic shear; acoustic transducer; shear waves; shear wave; method comprises; permanent magnet; method comprise; acoustic transducers; electromagnetic acoustic; measuring stress; horizontally polarized; structural variations; /73/
Citation Formats
Thompson, R Bruce. Method and apparatus for measuring stress. United States: N. p., 1985.
Web.
Thompson, R Bruce. Method and apparatus for measuring stress. United States.
Thompson, R Bruce. Tue .
"Method and apparatus for measuring stress". United States. https://www.osti.gov/servlets/purl/865473.
@article{osti_865473,
title = {Method and apparatus for measuring stress},
author = {Thompson, R Bruce},
abstractNote = {A method and apparatus for determining stress in a material independent of micro-structural variations and anisotropies. The method comprises comparing the velocities of two horizontally polarized and horizontally propagating ultrasonic shear waves with interchanged directions of propagation and polarization. The apparatus for carrying out the method comprises periodic permanent magnet-electromagnetic acoustic transducers for generating and detecting the shear waves and means for determining the wave velocities.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {6}
}
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