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Title: Laser detection of material thickness

Abstract

There is provided a method for measuring material thickness comprising: (a) contacting a surface of a material to be measured with a high intensity short duration laser pulse at a light wavelength which heats the area of contact with the material, thereby creating an acoustical pulse within the material: (b) timing the intervals between deflections in the contacted surface caused by the reverberation of acoustical pulses between the contacted surface and the opposite surface of the material: and (c) determining the thickness of the material by calculating the proportion of the thickness of the material to the measured time intervals between deflections of the contacted surface.

Inventors:
 [1]
  1. (Los Alamos, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
874709
Patent Number(s):
6445457
Assignee:
The Regents of the University of California (Los Alamos, NM) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
laser; detection; material; thickness; provided; method; measuring; comprising; contacting; surface; measured; intensity; duration; pulse; light; wavelength; heats; contact; creating; acoustical; timing; intervals; deflections; contacted; caused; reverberation; pulses; opposite; determining; calculating; proportion; time; laser pulse; time interval; /356/

Citation Formats

Early, James W. Laser detection of material thickness. United States: N. p., 2002. Web.
Early, James W. Laser detection of material thickness. United States.
Early, James W. Tue . "Laser detection of material thickness". United States. https://www.osti.gov/servlets/purl/874709.
@article{osti_874709,
title = {Laser detection of material thickness},
author = {Early, James W.},
abstractNote = {There is provided a method for measuring material thickness comprising: (a) contacting a surface of a material to be measured with a high intensity short duration laser pulse at a light wavelength which heats the area of contact with the material, thereby creating an acoustical pulse within the material: (b) timing the intervals between deflections in the contacted surface caused by the reverberation of acoustical pulses between the contacted surface and the opposite surface of the material: and (c) determining the thickness of the material by calculating the proportion of the thickness of the material to the measured time intervals between deflections of the contacted surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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