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Journal of Nondestructive Evaluation
Erschienen in: Journal of Nondestructive Evaluation 3/2012

01.09.2012

Ultrasonic Propagation and Scattering in Duplex Microstructures with Application to Titanium Alloys

verfasst von: L. Yang, J. Li, O. I. Lobkis, S. I. Rokhlin

Erschienen in: Journal of Nondestructive Evaluation | Ausgabe 3/2012

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Abstract

A general model for elongated duplex microstructures is proposed for modeling scattering-induced ultrasonic longitudinal attenuation in hexagonal polycrystals for application to titanium alloys. The material system consists of microtextured regions (MTRs) which are formed by much smaller α crystallites with preferred orientations. Their preferred orientation is represented by a modified Gaussian orientation distribution function. Scattering induced by MTRs and by crystallites is added to obtain ultrasonic attenuation in the medium. The effective elastic properties of MTRs are determined and used to obtain the scattering-induced MTR attenuation and backscattering. Crystallite attenuation is estimated by the untextured attenuation coefficient factored by a texture transition function. The total attenuation is obtained by combining solutions for microtextured region attenuation and crystallite attenuation. Spectroscopic attenuation and backscattering measurements are performed on a forged sample of titanium alloy. Reasonable agreement is found between experiment and the model predictions with a given texture parameter.
Vorheriger Artikel Effect of Columnar Grain Orientation on Ultrasonic Plane Wave Energy Reflection and Transmission Behaviour in Anisotropic Austenitic Weld Materials
Nächster Artikel Study on the Cracking Process of Cement-Based Materials by AC Impedance Method and Ultrasonic Method

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Metadaten
Titel
Ultrasonic Propagation and Scattering in Duplex Microstructures with Application to Titanium Alloys
verfasst von
L. Yang
J. Li
O. I. Lobkis
S. I. Rokhlin
Publikationsdatum
01.09.2012
Verlag
Springer-Verlag
Erschienen in
Journal of Nondestructive Evaluation / Ausgabe 3/2012
Print ISSN: 0195-9298
Elektronische ISSN: 1573-4862
DOI
https://doi.org/10.1007/s10921-012-0141-0

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