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

C. J L Lane; P. D. Wilcox

doi:10.1063/1.4716318

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 proceeding › Conference 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 language	English
Title of host publication	AIP Conference Proceedings
Pages	889-896
Number of pages	8
Volume	1430
Edition	31
DOIs	https://doi.org/10.1063/1.4716318
Publication status	Published - 13 Jul 2012
Event	38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011) - Burlington, VT, United States Duration: 17 Jul 2011 → 22 Jul 2011 Conference number: 38

Conference

Conference	38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011)
Abbreviated title	QNDE 2011
Country/Territory	United States
City	Burlington, VT
Period	17/07/11 → 22/07/11

Keywords

Elastic Anisotropy
Single Crystals
Ultrasonic Arrays

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title = "The effect of beam directivity on the inspection of anisotropic materials using ultrasonic arrays",

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.",

keywords = "Elastic Anisotropy, Single Crystals, Ultrasonic Arrays",

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AU - Wilcox, P. D.

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N2 - 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.

AB - 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.

KW - Elastic Anisotropy

KW - Single Crystals

KW - Ultrasonic Arrays

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DO - 10.1063/1.4716318

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SN - 9780735410138

VL - 1430

SP - 889

EP - 896

BT - AIP Conference Proceedings

T2 - 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011)

Y2 - 17 July 2011 through 22 July 2011

ER -

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

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