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Title: 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:
 [1]
  1. (241 Chardonnat La., Aiken, SC 29803)
Issue Date:
Research Org.:
WESTINGHOUSE SAVANNAH RIVER CO
OSTI Identifier:
869979
Patent Number(s):
5432595
Assignee:
Pechersky; Martin J. (241 Chardonnat La., Aiken, SC 29803) SRS
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 = {1995},
month = {1}
}

Patent:

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