Journal ArticleDOI
The excitation of Lamb waves in pipes using dry-coupled piezoelectric transducers
D. N. Alleyne,Peter Cawley +1 more
Reads0
Chats0
TLDR
In this article, the development of a dry-coupled piezoelectric transducer system for the detection of corrosion in chemical plant pipework using cylindrical Lamb waves is described.Abstract:
The development of a dry-coupled piezoelectric transducer system for the detection of corrosion in chemical plant pipework using cylindrical Lamb waves is described. It is shown that the axisymmetricL(0,2) mode at a frequency of about 70 kHz is an attractive mode to use for longdistance propagation. The results show that a ring of piezoelectric length-expander elements can be used to excite theL(0,2) mode and to suppress all the nonaxisymmetric modes. Tests have been carried out both with the piezoelectric elements bonded to the pipe and fabricated into a simple transducer which was clamped against the pipe. The performance of the dry-coupled system was very similar to that of the bonded elements. In pulse echo tests, the noise floor obtained with the dry-coupled system was less than 1% of the amplitude of the propagatingL(0,2) mode. The drycoupled transducers provide a simple, light, readily detachable system for the long-range inspection of pipework.read more
Citations
More filters
Journal ArticleDOI
Generation and detection of guided waves in a defective pipe using rapidly quenched magnetostrictive ribbons
TL;DR: In this paper, rapidly quenched ribbons prepared by a melt spinning technique have been used as a magnetostrictive sensor (MsS) element for the generation and detection of guided waves traversing through a pipe.
Proceedings ArticleDOI
Inspection of the machined features created at the embedded sensor aluminum plates
Shervin Tashakori,Amin Baghalian,Juan Cuervo,Volkan Y. Senyurek,Ibrahim N. Tansel,Balemir Uragun +5 more
TL;DR: In this article, the feasibility of the surface response to excitation (SuRE) method was evaluated for inspection of the quality of the machined features on aluminum plates, and the SuRE method was used to characterize different geometric features created by the milling operation on identical aluminum plates.
Journal ArticleDOI
An analytical model for guided wave inspection optimization for prismatic structures of any cross section
R M Sanderson,P P Catton +1 more
TL;DR: The model may be used to predict the displacement field in a prismatic structure arising from any excitation arrangement and may therefore be used as a tool to design new inspection systems, yet gives accuracy similar to finite element analysis and semi-analytical finite elements analysis methods.
Journal ArticleDOI
Development of Ultrasonic Guided Wave Transducer for Monitoring of High Temperature Pipelines.
TL;DR: This study demonstrates the application of GaPO4 for guided-wave SHM of pipelines and presents a model that can be used to evaluate different transducer designs for HT applications.
Journal ArticleDOI
Nondestructive Assessment of Plastic Elbows Using Torsional Waves: Numerical and Experimental Investigations
TL;DR: In this paper, numerical and experimental investigations on the wave propagation and diffusion of the torsional mode T(0,1) in polyvinyl-chloride (PVC) structures with curved components are examined.
References
More filters
Book
Wave Motion in Elastic Solids
TL;DR: In this article, a comprehensive study of elastic wave propagation in solids is presented, ranging from the theory of waves and vibrations in strings to the three-dimensional theory of elastic waves in thick plates.
Journal ArticleDOI
Matrix techniques for modeling ultrasonic waves in multilayered media
TL;DR: This paper presents a review of the main developments of the matrix techniques, and their use in response and modal models, with emphasis on ultrasonics applications.
Journal ArticleDOI
Three‐Dimensional Investigation of the Propagation of Waves in Hollow Circular Cylinders. I. Analytical Foundation
TL;DR: In this paper, the propagation of free harmonic waves along a hollow circular cylinder of infinite extent is discussed within the framework of the linear theory of elasticity, and a characteristic equation appropriate to the circular hollow cylinder is obtained by use of the Helmholtz potentials for arbitrary values of the physical parameters involved.
Journal ArticleDOI
Optimization of Lamb wave inspection techniques
D. N. Alleyne,Peter Cawley +1 more
TL;DR: In this article, the authors discuss the selection of the appropriate mode and frequency range for different inspection requirements and review the possible methods of excitation, response measurement and signal processing, and show that the presence of defects can be detected reliably from changes in the shape of the received waveform.
Journal ArticleDOI
The propagation in metal tubing of ultrasonic wave modes equivalent to Lamb waves
M.G. Silk,K.F. Bainton +1 more
TL;DR: In this article, it is shown that the L(0, 1) mode, which is comparable to the A0 Lamb wave mode in flat plate, can be generated with acceptable efficiency.
Related Papers (5)
The propagation in metal tubing of ultrasonic wave modes equivalent to Lamb waves
M.G. Silk,K.F. Bainton +1 more