Sensitivity of Simulated Flaw-Height Estimates to Phased Array Scan Parameters

Abstract

Phased array ultrasonic testing (PAUT) is a nondestructive testing (NDT) technique for detecting and sizing flaws in welds. Estimates of flaw size are sensitive to a variety of PAUT scan parameters. In this study, estimates of flaw height are simulated using computer software. The sensitivity of these estimates to selected PAUT scan parameters is analyzed to identify those that have the greatest influence on estimates of flaw height. Understanding how varying different parameters within a phased array instrument affects the accuracy of flaw-height estimates helps to validate PAUT scan procedures and improve flaw-height estimates. For this research, a series of permutations on selected flaws were performed to see how certain parameters affect the accuracy in sizing flaw height. In addition, an analysis on how beam spread leads to flaw sizing inaccuracies was also conducted as part of this work.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2023
Accession Number
AD1207761

Entities

People

  • James S. Kinnebrew
  • Jason D. Ray
  • Martin T. Schultz
  • Ramsay D. Bell

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Propagation
  • Amplitude
  • Arrays
  • Computer Programs
  • Computer-Aided Design
  • Computers
  • Crystals
  • Detection
  • Diameters
  • Diffraction
  • Frequency
  • Geometry
  • Materials
  • Measurement
  • Nondestructive Testing
  • Phased Arrays
  • Piezoelectric Crystals
  • Reflection
  • Reflectors
  • Waves

Readers

  • Metallurgy
  • Phased Array Antenna Design.
  • Women's Health and Cancer Risk Research: African American Women and Pregnancy Outcomes.