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Journal ArticleDOI

Three‐Dimensional Investigation of the Propagation of Waves in Hollow Circular Cylinders. II. Numerical Results

Denos C. Gazis
- 01 May 1959 - 
- Vol. 31, Iss: 5, pp 573-578
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TLDR
In this article, the results of a numerical evaluation of a characteristic equation derived in Part I, appropriate to free harmonic waves propagated along a hollow cylinder of infinite extent, were given for some representative cylinders covering the entire range from thin shells to solid cylinders.
Abstract: 
The results are given of a numerical evaluation of a characteristic equation derived in Part I, appropriate to free harmonic waves propagated along a hollow cylinder of infinite extent. This equation is evaluated for some representative cylinders covering the entire range from thin shells to solid cylinders, and the results are compared with the corresponding results of a shell theory. Observations are made regarding the variation of the frequency spectrum with the physical parameters, as well as the range of applicability of shell theories.

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Dissertation

Imaging and modeling the cardiovascular system

Elira Maksuti
TL;DR: Understanding cardiac pumping function is crucial to guiding diagnosis, predicting outcomes of interventions, and designing medical devices that interact with the cardiovascular system.
Journal ArticleDOI

Plaque characterization using shear wave elastography-evaluation of differentiability and accuracy using a combined ex vivo and in vitro setup.

David Marlevi, +4 more
- 23 Nov 2018 - 
TL;DR: The results indicate that group velocity or phase velocity showed the highest ability to significantly differentiate plaques of different stiffness, successfully classifying a majority of the 24 analysed plaque geometries, respectively.
Journal ArticleDOI

A Guided Wave Transducer with Sprayed Magnetostrictive Powder Coating for Monitoring of Aluminum Conductor Steel-Reinforced Cables.

Fuzai Lv, +4 more
- 30 Mar 2019 - 
TL;DR: An alternative sprayed magnetostrictive powder coating (SMPC) transducer was developed for guided wave generation and detection in ACSR cables and demonstrates that the discernable reflected waves of the cable end and an artificial defect of three-wire breakage were received by the transducers.
Journal ArticleDOI

Vibrations in cylindrical shells with transverse elastic isotropy: Application to III–V nitride nanotubes

V.R. Velasco, +1 more
- 01 Oct 2009 - 
TL;DR: In this article, the vibrational modes of cylindrical shells with transverse elastic isotropy and arbitrary thickness are calculated in the framework of the elasticity theory and a comparison with the isotropic approach is presented.
Journal ArticleDOI

Degradation of meridional ray backscattering enhancements for tilted cylinders by mode conversion: wide-band observations using a chirped PVDF sheet source

Scot F. Morse, +1 more
- 01 Jan 2001 - 
TL;DR: In this paper, high-frequency backscattering measurements for a thick-walled hollow finite cylindrical shell are discussed for a particular mechanism involving a meridional leaky ray, which leads to large enhancements along well defined arcs in frequency-aspect angle space.