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Title: Amplitude sorting of oscillatory burst signals by sampling

Abstract

A method and apparatus for amplitude sorting of oscillatory burst signals is described in which the burst signal is detected to produce a burst envelope signal and an intermediate or midportion of such envelope signal is sampled to provide a sample pulse output. The height of the sample pulse is proportional to the amplitude of the envelope signal and to the maximum burst signal amplitude. The sample pulses are fed to a pulse height analyzer for sorting. The present invention is used in an acoustic emission testing system to convert the amplitude of the acoustic emission burst signals into sample pulse heights which are measured by a pulse height analyzer for sorting the pulses in groups according to their height in order to identify the material anomalies in the test material which emit the acoustic signals.

Inventors:
 [1]
  1. Richland, WA
Issue Date:
Research Org.:
Battelle Memorial Institute, Columbus, OH (United States)
OSTI Identifier:
862763
Patent Number(s):
4006625
Assignee:
Battelle Memorial Institute (Columbus, OH)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
amplitude; sorting; oscillatory; burst; signals; sampling; method; apparatus; described; signal; detected; produce; envelope; intermediate; midportion; sampled; provide; sample; pulse; output; height; proportional; maximum; pulses; fed; analyzer; acoustic; emission; testing; convert; heights; measured; according; identify; material; anomalies; emit; sample pulse; pulse output; pulse height; acoustic signals; acoustic emission; acoustic signal; burst signals; signal amplitude; envelope signal; height analyzer; oscillatory burst; burst envelope; burst signal; amplitude sorting; /73/327/

Citation Formats

Davis, Thomas J. Amplitude sorting of oscillatory burst signals by sampling. United States: N. p., 1977. Web.
Davis, Thomas J. Amplitude sorting of oscillatory burst signals by sampling. United States.
Davis, Thomas J. Sat . "Amplitude sorting of oscillatory burst signals by sampling". United States. https://www.osti.gov/servlets/purl/862763.
@article{osti_862763,
title = {Amplitude sorting of oscillatory burst signals by sampling},
author = {Davis, Thomas J},
abstractNote = {A method and apparatus for amplitude sorting of oscillatory burst signals is described in which the burst signal is detected to produce a burst envelope signal and an intermediate or midportion of such envelope signal is sampled to provide a sample pulse output. The height of the sample pulse is proportional to the amplitude of the envelope signal and to the maximum burst signal amplitude. The sample pulses are fed to a pulse height analyzer for sorting. The present invention is used in an acoustic emission testing system to convert the amplitude of the acoustic emission burst signals into sample pulse heights which are measured by a pulse height analyzer for sorting the pulses in groups according to their height in order to identify the material anomalies in the test material which emit the acoustic signals.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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