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
- 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}
}
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