Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81070
Title: Detection of fatigue crack in an aluminium pipe with nonlinear guided waves
Authors: Guan, R
Lu, Y
Wang, K 
Su, Z 
Keywords: Fatigue crack
Nonlinearity of guided waves
Pipe inspection
Issue Date: 2018
Source: Proceedings of the 7th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2018, 2018, p.250-258 How to cite?
Abstract: Guided wave based inspection using nonlinear characteristics has attracted great attention for microscale damage in metallic structures. However, the curvature of the pipeline complicates the detection of damage in it. In this study, fatigue testing with a nonlinear signal collecting system and surface-bonded piezoelectric transducers is carried out to identify the fatigue crack in an aluminium pipe using second harmonic as nonlinear wave characteristics. Due to the co-existence of multiple wave modes in a pipe structure, an appropriate nonlinear index is used to describe the nonlinearity. The experimental results show that the breathing behaviour exists only at the early stage of the fatigue crack within 1 mm in length and it can be detected by the method based on nonlinear guided waves. This study provides an effective approach for the measurement of the fatigue crack initiation in pipe-like structures using piezoelectric transducers.
Description: 7th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2018, Hong Kong, China, 12-15 November 2018
URI: http://hdl.handle.net/10397/81070
ISBN: 9783000603594
Rights: This is an open-access article distributed under the terms and conditions of Creative Commons CC-BY-NC licence (https://creativecommons.org/licenses/by/4.0/ )
The following publication Guan, R., Lu, Y., Wang, K. & Su, Z. Su (2018). Detection of fatigue crack in an aluminium pipe with nonlinear guided waves. Proceedings of the 7th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2018, p.250-258 is available at https://www.ndt.net/search/docs.php3?showForm=off&id=24147
Appears in Collections:Conference Paper

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