journal article

Journal Article

Text

Nondestructive Testing and Evaluation. 2005, 20(1), p. 63-75

Mode extraction technique for guided waves in a pipe

Taylor & Francis

English

Text

2005

https://doi.org/10.1080/10589750500062771

This is an Accepted Manuscript of an article published by Taylor & Francis in Nondestructive Testing and Evaluation on 19 Aug 2006, available at http://wwww.tandfonline.com/10.1080/10589750500062771.

Guided waves propagating in a pipe consist of many modes with different velocities and dispersions. To analyze these complex guided waves through a normal mode expansion technique, that is the fundamental theory on guided waves, we must first extract guided wave modes from received signals. In this study, we develop a mode extraction technique in which many received signals at different circumferential positions can be processed based on the fact that guided wave modes have different displacement distributions in the circumferential direction. After discussing the relevant theory, we verify our mode extraction technique experimentally using eight signals at eight different circumferential positions. Moreover, we show that the circumferential position of an excitation transducer, as well as the distance between an excitation transducer and a receiver in a pitch-catch configuration can be identified using the mode extraction technique. © 2005 Taylor & Francis Ltd.

88618

Mode extraction technique for guided waves in a pipe

Taylor & Francis

English

2005

Nondestructive Testing and Evaluation

20

1

63

75

https://doi.org/10.1080/10589750500062771

https://hdl.handle.net/11094/88618