Ultrasonic backscatter from elongated grains using line focused ultrasound

Christopher M. Kube, Andrea P. Arguelles, Joseph A. Turner

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Ultrasonic backscattering from polycrystalline materials with elongated grains is investigated. A normal incident line-focus transducer is employed such that refracted longitudinal and transverse waves are focused within the polycrystal and scatter at grain boundaries back to the transducer. A ray-based scattering model is developed to explain the dependence of the statistics of scattering measurements on grain elongation. The spatial variance of measured scattered signals from Al alloy (7475-T7) is compared to the model. This work promotes the ultrasonic backscatter technique for monitoring grain elongation of metals using one transducer with access to a single sample face.

Original languageEnglish (US)
Pages (from-to)79-83
Number of pages5
JournalUltrasonics
Volume82
DOIs
StatePublished - Jan 2018

Keywords

  • Attenuation
  • Backscatter
  • Grain elongation
  • Grain size
  • Scattering

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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