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Digital Acquisition and Analysis of Acoustic Emission Signals for Crack Site Initiation Studies

  • Basil A. Barna
  • John A. Johnson
  • Randy Allemeier
Conference paper
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series (RPQN, volume 6 A)

Abstract

In the study of elastic-plastic fracture mechanisms it is necessary to determine accurately the time and location history of crack initiation and to discriminate between the fracture mechanisms of ductile and brittle rupture. In order to accomplish this, a real-time digital acquisition system for analysis of acoustic emissions has been configured, and some preliminary results are described in this paper. The goals for this system are to locate crack initiation sites with an accuracy of 200 μm or better and to respond to events separated in time by less than 100 ms.

Keywords

Acoustic Emission Fracture Specimen Crack Initiation Site Acoustic Emission Data Measured Time Delay 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Reference

  1. 1.
    T. M. Proctor, “An Improved Piezoelectric Acoustic Emission Transducer”, JASA, 71, 1163 (1982).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • Basil A. Barna
    • 1
  • John A. Johnson
    • 1
  • Randy Allemeier
    • 1
  1. 1.Idaho National Engineering LaboratoryEG&G Idaho, Inc.Idaho FallsUSA

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