Theoretical estimation of changes in plane elastic waves due to cylindrical inclusions

Ryoichi Furushima, Yohtaro Matsuo, Tadashi Shiota, Kouichi Yasuda

Research output: Contribution to journalArticle

Abstract

Changes in amplitude and phase shifts in plane elastic waves were theoretically estimated when they propagated through an elastic body containing cylindrical inclusions. Based on the integral equation suggested by Lavrov et al., these changes were calculated in the case when only one cylindrical inclusion was located in the body and the propagating waves have a single frequency. These calculations were expanded to more practical case when multiple cylindrical inclusions aligned in the body and the waves have some frequency band. The changes in amplitude and phase shifts calculated were associated to the changes in apparent sonic velocity and attenuation coefficient due to a structural change in the material. This theoretical approach contributes to a quantitative damage evaluation based upon structural changes in various materials by measuring the acoustical parameters such as apparent sonic velocity and attenuation coefficient.

Original languageEnglish
Pages (from-to)29-40
Number of pages12
JournalJournal of Nondestructive Evaluation
Volume30
Issue number1
DOIs
Publication statusPublished - Mar 2011
Externally publishedYes

Keywords

  • Apparent sonic velocity
  • Attenuation coefficient
  • Damage evaluation
  • Fourier transform
  • Ultrasonic waves

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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