Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison
Abstract
A method for measuring residual stress in a material comprising the steps of establishing a speckle pattern on the surface with a first laser then heating a portion of that pattern with an infrared laser until the surface plastically deforms. Comparing the speckle patterns before and after deformation by subtracting one pattern from the other will produce a fringe pattern that serves as a visual and quantitative indication of the degree to which the plasticized surface responded to the stress dung heating and enables calculation of the stress.
- Inventors:
-
- 241 Chardonnat La., Aiken, SC 29803
- Issue Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- OSTI Identifier:
- 869979
- Patent Number(s):
- 5432595
- Assignee:
- Pechersky; Martin J. (241 Chardonnat La., Aiken, SC 29803)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; measuring; residual; stresses; materials; plastically; deforming; material; interference; pattern; comparison; stress; comprising; steps; establishing; speckle; surface; laser; heating; portion; infrared; deforms; comparing; patterns; deformation; subtracting; produce; fringe; serves; visual; quantitative; indication; degree; plasticized; responded; dung; enables; calculation; measuring residual; infrared laser; interference pattern; material comprising; fringe pattern; residual stress; quantitative indication; speckle pattern; plastically deforming; /356/73/
Citation Formats
Pechersky, Martin J. Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison. United States: N. p., 1995.
Web.
Pechersky, Martin J. Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison. United States.
Pechersky, Martin J. Sun .
"Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison". United States. https://www.osti.gov/servlets/purl/869979.
@article{osti_869979,
title = {Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison},
author = {Pechersky, Martin J},
abstractNote = {A method for measuring residual stress in a material comprising the steps of establishing a speckle pattern on the surface with a first laser then heating a portion of that pattern with an infrared laser until the surface plastically deforms. Comparing the speckle patterns before and after deformation by subtracting one pattern from the other will produce a fringe pattern that serves as a visual and quantitative indication of the degree to which the plasticized surface responded to the stress dung heating and enables calculation of the stress.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}
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