Ultrasonic Backscattering from Polycrystalline Aggregates using Time-Domain Linear Response Theory

  • James H. Rose


The ultrasonic detection of altered microstructures in metals is a difficult, but necessary task. The detection of hard alpha inclusions in titanium jet engine disks is an important, safety related, example of the need. One proposed tool for detecting such altered microstructures involves analyzing changes in the ultrasonic grain noise; i.e., in the incoherent part of the scattered signal.


Acoustic Impedance Incident Pulse Backscatter Signal Polycrystalline Aggregate Acoustic Backscatter 
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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  1. 1.
    B. A. Auld, “Generalized Electromechanical Reciprocity Relations Applied to the Calculation of Elastic Wave Scattering Coefficients”, Wave Motion, 1, 3 (1979).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • James H. Rose
    • 1
  1. 1.Ames LaboratoryIowa State UniversityAmesUSA

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