The effect of beam directivity on the inspection of anisotropic materials using ultrasonic arrays

C. J L Lane*, P. D. Wilcox

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

The beam directivity from an ultrasonic transducer in isotropic materials is well documented. However, beam directivities in elastically anisotropic materials and their effect on ultrasonic NDE inspection has been investigated far less extensively. In this paper, analytical and numerical finite element models are developed to predict the beam directivity in a single crystal nickel-based superalloy. This material is highly anisotropic and is used widely in the gas-turbine industry. The developed models are used to investigate the effect of the crystallographic orientation on the beam directivity. In turn, the effect of beam directivity on defect detection sensitivity and characterization capability using an ultrasonic array is demonstrated. It is shown that the effect is particularly important for the accurate sizing of small defects.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages889-896
Number of pages8
Volume1430
Edition31
DOIs
Publication statusPublished - 13 Jul 2012
Event38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011) - Burlington, VT, United States
Duration: 17 Jul 201122 Jul 2011
Conference number: 38

Conference

Conference38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011)
Abbreviated titleQNDE 2011
CountryUnited States
CityBurlington, VT
Period17/07/1122/07/11

Keywords

  • Elastic Anisotropy
  • Single Crystals
  • Ultrasonic Arrays

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