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Ultrasonic wave propagation in cortical bone mimics

Dodd, Simon P., Cunningham, James L., Miles, Anthony W., Humphrey, Victor F. and Gheduzzi, Sabina (2004) Ultrasonic wave propagation in cortical bone mimics Journal of the Acoustical Society of America, 116, (4), p. 2478.

Record type: Article


Understanding the velocity and attenuation of ultrasonic waves in cortical bone is important for studies of osteoporosis and fractures. In particular, propagation in free- and water-loaded acrylic plates, with a thickness range of around 1–6 mm, has been widely used to mimic cortical bone behavior. A theoretical investigation of Lamb mode propagation at 200 kHz in free- and water-loaded acrylic plates revealed a marked difference in the form of their velocity and attenuation dispersion curves as a function of frequency thickness product. In experimental studies, this difference between free and loaded plates is not seen. Over short measurement distances, the results for both free and loaded plates are consistent with previous modeling and experimental studies: for thicker plates (above 3–4 mm), the velocity calculated using the first arrival signal is a lateral wave comparable with the longitudinal velocity. As the plate thickness decreases, the velocity approaches the S0 Lamb mode value. Wave2000 modeling of the experimental setup agrees with experimental data. The data are also used to test a hypothesis that for thin plates the velocity approaches the corresponding S0 Lamb mode velocity at large measurement distances or when different arrival time criteria are used.

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Published date: 2004
Organisations: Fluid Dynamics & Acoustics Group


Local EPrints ID: 28185
PURE UUID: 1c40d4b6-3f4c-43bc-8299-664237a05632
ORCID for Victor F. Humphrey: ORCID iD

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Date deposited: 28 Apr 2006
Last modified: 17 Jul 2017 16:02

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Author: Simon P. Dodd
Author: James L. Cunningham
Author: Anthony W. Miles
Author: Sabina Gheduzzi

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