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Excitation and propagation of ultrasonic guided waves in pipes by piezoelectric transducer arrays

Excitation and propagation of ultrasonic guided waves in pipes by piezoelectric transducer arrays

Niu, X., Tee, K. F. ORCID: 0000-0003-3202-873X, Chen, H. P. and Marques, H. R. (2018) Excitation and propagation of ultrasonic guided waves in pipes by piezoelectric transducer arrays. Journal of Physics: Conference Series, 1065. ISSN 1742-6588 (Print), 1742-6596 (Online) (doi:https://doi.org/10.1088/1742-6596/1065/22/222006)

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Abstract

Ultrasonic guided wave inspection is one of the non-destructive testing (NDT) techniques available for the structural health monitoring (SHM) of engineering structures. Compared with other NDT techniques, guided waves can propagate over tens of metres with a relatively high sensitivity to defects in the structure. The general sensitivity range of the operation is up to 3% reduction of the cross-sectional area, depending on the signal-to-noise ratio. However, optimisation of guided wave testing method is still a requirement, as the technique is currently subject to a complex analysis due to wide number of guided wave modes generated. This can be done by optimising the transducer array design. In this paper, it is described the behaviour of a set of piezoelectric transducer arrays upon excitation in a tubular structure with simulated defects. This is achieved through a combination of finite element analysis (FEA) and experimental testing. The core objective of the work is to optimise the design of transducer arrays aimed at exciting the T(0,1) mode with a significant level of mode purity. This will significantly reduce the complexity of guided wave analysis, enhancing effectively the structural health of structures and subsequently reduce the industry maintenance cost.

Item Type: Article
Additional Information: The XXII The World Congress of the International Measurement Confederation (IMEKO 2018) was held from 3–6 September 2018, Belfast, United Kingdom. *** Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Uncontrolled Keywords: Excitation; propagation; ultrasonic guided waves; pipes; piezoelectric transducer arrays
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 23 Mar 2019 22:27
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/23181

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