A micro-transducer matrix design for the detection of flexural guided waves

Rammouz, Hala El; Benmeddour, Farouk; Assaad, Jamal; Moulin, Emmanuel; Smagin, Nikolay; Dupont, Lucie; Chehami, Lynda; Zaatar, Y.; Herro, Ziad

doi:10.1016/j.ultras.2021.106430

Cited by 1 publication

(1 citation statement)

References 21 publications

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“…The flexural guided wave mode is the pure non-axisymmetric guided wave whose energy is not evenly distributed around the circumference of the circular tube structure [16][17][18][19]. However, achieving a pure flexural guided wave mode is difficult [20,21]. Combining an axisymmetric guided wave mode combined with several flexural guided wave modes can lead to a synthetic non-axisymmetric guided wave [22], whose energy is also unevenly distributed.…”

Section: Introductionmentioning

confidence: 99%

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

Fang

2023

Smart Mater. Struct.

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An axisymmetric guided wave mode is excited independently within a circular tube structure to reduce the complexity of signal interpretation through the prevention of unwanted wave polarisations and reflections. However, it is difficult to use the axisymmetric guided wave to determine the circumferential position and coverage of a defect within the circular tube structure. Non-axisymmetric guided waves can be used to mitigate the limitation of the axisymmetric guided wave through the adoption of a partially covered transducer design and analysis of the propagation characteristics. The partial excitation of non-axisymmetric guided waves can facilitate the arrangement of a transducer during defect detection. This paper reviews state-of-the-art research on non-axisymmetric guided waves for determining the axial positions, circumferential positions, and circumferential lengths of defects. First, the fundamental analysis of a specific non-axisymmetric guided wave mode based on the normal mode expansion method and beam directivity analysis method reveals that the propagation characteristics of the wave mode are closely related to the working principle and configuration of the corresponding transducer. Then, the advantages and disadvantages of the different types of transducers and transducer arrays for the excitation of non-axisymmetric guided waves are introduced and discussed. Finally, the current defect detection methods based on non-axisymmetric guided waves are discussed and summarised. This review can promote the application of non-axisymmetric guided waves in defect detection.

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Section: Introductionmentioning

confidence: 99%

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

Fang

2023

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

A micro-transducer matrix design for the detection of flexural guided waves

Cited by 1 publication

References 21 publications

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

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