Journal Article10.1016/0963-8695(94)90211-9
A guided wave inspection technique for nuclear steam generator tubing
174
TL;DR: In this article, the utility of guided ultrasonic waves for increasing the efficiency and sensitivity of nuclear steam generator tubing evaluation by non-destructive means is explored and the basic theoretical background of guided waves in tubes is presented, with major emphasis placed on those results with direct relevance to NDE applications.
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Abstract: The utility of guided ultrasonic waves for increasing the efficiency and sensitivity of nuclear steam generator tubing evaluation by nondestructive means is explored. The basic theoretical background of guided waves in tubes is presented, with major emphasis placed on those results with direct relevance to NDE applications. The possibility of increasing the inspection range of the guided wave modes as well as their sensitivity to defects by proper choice of mode and frequency is also discussed.
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Citations
Guided waves for SHM of a large truss structure
TL;DR: The method combines the advantages of UGWs with the extraction of defect-sensitive features aimed at performing a multivariate diagnosis of damage to diagnose the presence of defects as small as a few percent of the waveguide cross-sectional.
Application of Novel Subspace Pursuit on Guided Wave Signal Recognition Based on Modified Differential Evolution Algorithm
TL;DR: MSP is a useful signal recognition and defect location approach for pipes guided wave NDT by choosing chirplet function as match atoms.
Experimental Verification and Analysis for Ability of Defect Detection with Angle for Axis Direction of Guided Wave Using Magnetostrictive Sensor
Yigon Kim,Young-Chul Bae,Chen Li,J. B. Lee,Hong-Sik Moon,Deahwa Yoo,Kyung-Jo Park +6 more
- 01 Jan 2014
TL;DR: In this article, the authors sent and received longitudinal mode and torisional mode of guided wave using magnetostrictive sensor for test plate of mock-up with artificial defect of 90°, 75° 60° for axis direction of pipe.
High resolution guided wave pipe inspection
TL;DR: In this article, an array-based approach is presented that allows guided waves to be focused on both transmission and reception to produce a high-resolution image of a length of pipe, and it is shown that a signal to coherent noise ratio of over 40 dB with respect to the reflected signal from a free end of pipe can be obtained, even taking into account typical levels of experimental uncertainty in terms of transducer positioning, wave velocity etc.
Flood Detection in Steel Tubes Using Guided Wave Energy Leakage
TL;DR: In this article , a 40 kHz PZT transmitter and transducer were used to detect water in hollow pipes. But they were attached to the external wall of a steel tube 1 m × 270 mm × 2 mm in size.
References
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Acoustic Fields and Waves in Solids
Bert A. Auld
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TL;DR: In this article, the authors apply the material developed in the Volume One to various boundary value problems (reflection and refraction at plane surfaces, composite media, waveguides and resonators).
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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.
784
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.
326
•Journal Article
Ultrasonic guided wave inspection concepts for steam generator tubing
TL;DR: In this article, the authors proposed a special probe for inspection of steam generator tubing, which is used in demonstration of law detection feasibility, and in understanding the conceptual development of a complete flaw detection system.
66
Excitation of guided elastic wave modes in hollow cylinders by applied surface tractions
John J. Ditri,Joseph L. Rose +1 more
TL;DR: In this paper, a closed-form solution is given for the amplitude with which any propagating waveguide mode is generated due to the application of prescribed (time harmonic) surface tractions.