Journal ArticleDOI
Three‐Dimensional Investigation of the Propagation of Waves in Hollow Circular Cylinders. II. Numerical Results
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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.read more
Citations
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Proceedings ArticleDOI
Alternating winding magnetostrictive electromagnetic acoustic transducer for pipe torsional guided wave generation
TL;DR: In this paper, an alternating winding magnetostrictive type EMAT for torsional mode ultrasonic guided wave generation in a steel pipe is introduced, which is composed of a pre-magnetized Nickel strip with circumferential static magnetic field and a coaxial coil in an alternating wind pattern.
Journal ArticleDOI
Application of state vector formalism and Legendre polynomial hybrid method in the longitudinal guided wave propagation analysis of composite multi-layered pipes
TL;DR: In this paper, a polynomial hybrid approach for modeling longitudinal guided waves propagating in anisotropic composites multi-layered pipes is proposed, where dispersion characteristic equations in cylindrical coordinate system are derived by introducing the state vector form of displacement and stress components.
ReportDOI
High Frequency Guided Wave Phased Array Focusing in Pipe
Joseph L. Rose,Li Zhang +1 more
TL;DR: In this article, the authors used the non-axisymmetric energy distributions of flexural wave modes to improve the long range ultrasonic guided wave inspection results in hollow cylinders.
Journal ArticleDOI
Excitation and propagation of ultrasonic guided waves in pipes by piezoelectric transducer arrays
TL;DR: In this article, a set of piezoelectric transducer arrays are optimized to exciting the T(0,1) mode with a significant level of mode purity.
Dissertation
Signal processing methods for defect detection in multi-wire helical waveguides using ultrasonic guided waves
TL;DR: This thesis was submitted for the degree of Master of Philosophy and was awarded by Brunel University London as discussed by the authors, London, UK, UK. 2015.... and was published in 2016.
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