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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
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
OSTI Identifier:
869979
Patent Number(s):
US 5432595
Assignee:
Pechersky; Martin J. (241 Chardonnat La., Aiken, SC 29803)
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. 1995. "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 = {},
url = {https://www.osti.gov/biblio/869979}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}