Ultrasonic Scattering by Planar and Non-Planar Cracks,

Abstract

Scattering of elastic waves by surface-breaking planar and non planar (branched) cracks, of considerable current interest for ultrasonic nondestructive evaluation, has been studied in this paper. Attention has been focused on the near field surface displacements and the crack tip(s) stress intensity factors. For planar normal cracks the stress intensity factors are shown to agree with earlier results. Numerical results showing normalized vertical surface displacements are presented for incident body and surface waves. It is shown that the results for planar and branched cracks can be significantly different in some instances.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1986
Accession Number
ADA172113

Entities

People

  • Arvind H. Shah
  • Subhendu K. Datta

Organizations

  • University of Colorado Boulder

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Amplitude
  • Civil Engineering
  • Crack Tips
  • Elastic Waves
  • Engineering
  • Equations
  • Frequency
  • Intensity
  • Mechanical Engineering
  • Near Field
  • Rayleigh Waves
  • Scattering
  • Stress Intensity Factors
  • Stress Strain Relations
  • Stresses
  • Surface Waves
  • Waves

Fields of Study

  • Physics

Readers

  • Materials Science (Mechanical Engineering).
  • Phased Array Antenna Design.
  • Structural Health Monitoring of Composite Structures.