The detection of the pipe crack utilizing the operational modal strain identified from fiber bragg grating

Zechao Wang; Mingyao Liu; Yongzhi Qu; Qin Wei; Zude Zhou; Yuegang Tan; Liu Hong; Han Song

doi:10.3390/s19112556

The detection of the pipe crack utilizing the operational modal strain identified from fiber bragg grating

Zechao Wang, Mingyao Liu, Yongzhi Qu, Qin Wei, Zude Zhou, Yuegang Tan, Liu Hong, Han Song

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The small and light-weight pipeline is widely used in hydraulic system for aerospace engineering. The crack is one of the most common failures in the pipelines so that its incipient detection can further avoid the catastrophic damage of the piping system. The electrical and piezoelectric sensors are conventionally used for the structural health monitoring (SHM), while these are not suitable for the cascaded pipelines in harsh environment because the added mass will change the modal characteristics of the cascaded pipelines. The Fiber Bragg Grating (FBG) sensor with light-weight, multiplexed, and anti-electromagnetic interference properties, are employed to obtain the modal strain transmissibility with a novel diagram of the operational modal analysis (OMA). Based on the OMA an enhanced damage indicator is proposed to detect the crack. After going through analytical modeling, finite element modeling (FEM) and its corresponding experiments, it is concluded that the presented method is effective and accurate to detect and locate the crack.

Original language	English (US)
Article number	2556
Journal	Sensors (Switzerland)
Volume	19
Issue number	11
DOIs	https://doi.org/10.3390/s19112556
State	Published - Jun 1 2019
Externally published	Yes

Bibliographical note

Funding Information:
Funding: This research is partially supported by natural science foundation of China under projects No. 51505353 and No. 51605349 and the project, i.e. Fundamental Research Funds for the Central Universities (WUT:2018IVB012).

Publisher Copyright:
© 2019, MDPI AG. All rights reserved.

Keywords

Crack detection
Enhanced damage indicator
Fiber Bragg Grating
Operation modal strain
Structural health monitoring

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abstract = "The small and light-weight pipeline is widely used in hydraulic system for aerospace engineering. The crack is one of the most common failures in the pipelines so that its incipient detection can further avoid the catastrophic damage of the piping system. The electrical and piezoelectric sensors are conventionally used for the structural health monitoring (SHM), while these are not suitable for the cascaded pipelines in harsh environment because the added mass will change the modal characteristics of the cascaded pipelines. The Fiber Bragg Grating (FBG) sensor with light-weight, multiplexed, and anti-electromagnetic interference properties, are employed to obtain the modal strain transmissibility with a novel diagram of the operational modal analysis (OMA). Based on the OMA an enhanced damage indicator is proposed to detect the crack. After going through analytical modeling, finite element modeling (FEM) and its corresponding experiments, it is concluded that the presented method is effective and accurate to detect and locate the crack.",

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AU - Song, Han

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N2 - The small and light-weight pipeline is widely used in hydraulic system for aerospace engineering. The crack is one of the most common failures in the pipelines so that its incipient detection can further avoid the catastrophic damage of the piping system. The electrical and piezoelectric sensors are conventionally used for the structural health monitoring (SHM), while these are not suitable for the cascaded pipelines in harsh environment because the added mass will change the modal characteristics of the cascaded pipelines. The Fiber Bragg Grating (FBG) sensor with light-weight, multiplexed, and anti-electromagnetic interference properties, are employed to obtain the modal strain transmissibility with a novel diagram of the operational modal analysis (OMA). Based on the OMA an enhanced damage indicator is proposed to detect the crack. After going through analytical modeling, finite element modeling (FEM) and its corresponding experiments, it is concluded that the presented method is effective and accurate to detect and locate the crack.

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The detection of the pipe crack utilizing the operational modal strain identified from fiber bragg grating

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