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Title: Method For Characterizing Residual Stress In Metals

Abstract

A method is provided for measuring the residual stress in metals. The method includes the steps of drilling one or more holes in a metal workpiece to a preselected depth and mounting one or more acoustic sensors on the metal workpiece and connecting the sensors to an electronic detecting and recording device. A liquid metal capable of penetrating into the metal workpiece placed at the bottom of the hole or holes. A recording is made over a period of time (typically within about two hours) of the magnitude and number of noise events which occur as the liquid metal penetrates into the metal workpiece. The magnitude and number of noise events are then correlated to the internal stress in the region of the workpiece at the bottom of the hole.

Inventors:
 [1];  [2];  [3]
  1. (Santa Fe, NM)
  2. (Alexandria, VA)
  3. (Burke, VA)
Issue Date:
Research Org.:
Los Alamos National Laboratory
OSTI Identifier:
879727
Patent Number(s):
6487915
Application Number:
09/964549
Assignee:
The United States of America as represented by the Secretary of the Navy (Washington, DC) OSTI
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Jacobson, Loren A., Michel, David J., and Wyatt, Jeffrey R. Method For Characterizing Residual Stress In Metals. United States: N. p., 2002. Web.
Jacobson, Loren A., Michel, David J., & Wyatt, Jeffrey R. Method For Characterizing Residual Stress In Metals. United States.
Jacobson, Loren A., Michel, David J., and Wyatt, Jeffrey R. Tue . "Method For Characterizing Residual Stress In Metals". United States. https://www.osti.gov/servlets/purl/879727.
@article{osti_879727,
title = {Method For Characterizing Residual Stress In Metals},
author = {Jacobson, Loren A. and Michel, David J. and Wyatt, Jeffrey R.},
abstractNote = {A method is provided for measuring the residual stress in metals. The method includes the steps of drilling one or more holes in a metal workpiece to a preselected depth and mounting one or more acoustic sensors on the metal workpiece and connecting the sensors to an electronic detecting and recording device. A liquid metal capable of penetrating into the metal workpiece placed at the bottom of the hole or holes. A recording is made over a period of time (typically within about two hours) of the magnitude and number of noise events which occur as the liquid metal penetrates into the metal workpiece. The magnitude and number of noise events are then correlated to the internal stress in the region of the workpiece at the bottom of the hole.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {12}
}

Patent:

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