Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate

Guigen Liu, Lingling Hu, Yupeng Zhu, Ming Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a fiber-optic acoustic emission (AE) sensor system for the detection of AE signals generated from cracks within an aluminum plate is described. The sensor head consists of a pair of tandem chirped fiber Bragg gratings (CFBGs) that form a Fabry-Perot type interferometer (FPI). This CFBG-FPI features a series of resonant wavelength notches in the reflection spectrum, which are subject to the same wavelength shift as the sensor is stretched or compressed by AE signals. By locking a tunable laser to the slope of any individual notch, the AE induced high-frequency wavelength shift is converted into intensity variation. Using the sensor system, AE signals generated by three different types of sources, i.e., PZT actuator, pencil break, and cracks within aluminum plates, are detected and compared. Our experimental results suggest that cracks in the aluminum plates gave birth to broadband AE with peak intensity spanning over 100 kHz to 350 kHz.

Original languageEnglish (US)
Title of host publicationStructural Health Monitoring 2017
Subtitle of host publicationReal-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017
PublisherDEStech Publications
Pages1192-1197
Number of pages6
Volume1
ISBN (Electronic)9781605953304
StatePublished - 2017
Event11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017 - Stanford, United States
Duration: Sep 12 2017Sep 14 2017

Other

Other11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017
CountryUnited States
CityStanford
Period9/12/179/14/17

Fingerprint

Crack detection
Acoustic emissions
Aluminum
Acoustics
Fiber optics
Sensors
Fiber Bragg gratings
Cracks
Wavelength
Interferometers
Laser tuning
Lasers
Actuators
Head
Parturition

ASJC Scopus subject areas

  • Health Information Management
  • Computer Science Applications

Cite this

Liu, G., Hu, L., Zhu, Y., & Han, M. (2017). Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate. In Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017 (Vol. 1, pp. 1192-1197). DEStech Publications.

Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate. / Liu, Guigen; Hu, Lingling; Zhu, Yupeng; Han, Ming.

Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017. Vol. 1 DEStech Publications, 2017. p. 1192-1197.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, G, Hu, L, Zhu, Y & Han, M 2017, Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate. in Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017. vol. 1, DEStech Publications, pp. 1192-1197, 11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017, Stanford, United States, 9/12/17.
Liu G, Hu L, Zhu Y, Han M. Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate. In Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017. Vol. 1. DEStech Publications. 2017. p. 1192-1197
Liu, Guigen ; Hu, Lingling ; Zhu, Yupeng ; Han, Ming. / Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate. Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017. Vol. 1 DEStech Publications, 2017. pp. 1192-1197
@inproceedings{eea559e3c2d94f29becc2b2195ec9d88,
title = "Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate",
abstract = "In this paper, a fiber-optic acoustic emission (AE) sensor system for the detection of AE signals generated from cracks within an aluminum plate is described. The sensor head consists of a pair of tandem chirped fiber Bragg gratings (CFBGs) that form a Fabry-Perot type interferometer (FPI). This CFBG-FPI features a series of resonant wavelength notches in the reflection spectrum, which are subject to the same wavelength shift as the sensor is stretched or compressed by AE signals. By locking a tunable laser to the slope of any individual notch, the AE induced high-frequency wavelength shift is converted into intensity variation. Using the sensor system, AE signals generated by three different types of sources, i.e., PZT actuator, pencil break, and cracks within aluminum plates, are detected and compared. Our experimental results suggest that cracks in the aluminum plates gave birth to broadband AE with peak intensity spanning over 100 kHz to 350 kHz.",
author = "Guigen Liu and Lingling Hu and Yupeng Zhu and Ming Han",
year = "2017",
language = "English (US)",
volume = "1",
pages = "1192--1197",
booktitle = "Structural Health Monitoring 2017",
publisher = "DEStech Publications",

}

TY - GEN

T1 - Fiber-optic acoustic emission sensor based on a chirped FBG pair for crack detection in aluminum plate

AU - Liu, Guigen

AU - Hu, Lingling

AU - Zhu, Yupeng

AU - Han, Ming

PY - 2017

Y1 - 2017

N2 - In this paper, a fiber-optic acoustic emission (AE) sensor system for the detection of AE signals generated from cracks within an aluminum plate is described. The sensor head consists of a pair of tandem chirped fiber Bragg gratings (CFBGs) that form a Fabry-Perot type interferometer (FPI). This CFBG-FPI features a series of resonant wavelength notches in the reflection spectrum, which are subject to the same wavelength shift as the sensor is stretched or compressed by AE signals. By locking a tunable laser to the slope of any individual notch, the AE induced high-frequency wavelength shift is converted into intensity variation. Using the sensor system, AE signals generated by three different types of sources, i.e., PZT actuator, pencil break, and cracks within aluminum plates, are detected and compared. Our experimental results suggest that cracks in the aluminum plates gave birth to broadband AE with peak intensity spanning over 100 kHz to 350 kHz.

AB - In this paper, a fiber-optic acoustic emission (AE) sensor system for the detection of AE signals generated from cracks within an aluminum plate is described. The sensor head consists of a pair of tandem chirped fiber Bragg gratings (CFBGs) that form a Fabry-Perot type interferometer (FPI). This CFBG-FPI features a series of resonant wavelength notches in the reflection spectrum, which are subject to the same wavelength shift as the sensor is stretched or compressed by AE signals. By locking a tunable laser to the slope of any individual notch, the AE induced high-frequency wavelength shift is converted into intensity variation. Using the sensor system, AE signals generated by three different types of sources, i.e., PZT actuator, pencil break, and cracks within aluminum plates, are detected and compared. Our experimental results suggest that cracks in the aluminum plates gave birth to broadband AE with peak intensity spanning over 100 kHz to 350 kHz.

UR - http://www.scopus.com/inward/record.url?scp=85032433312&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85032433312&partnerID=8YFLogxK

M3 - Conference contribution

VL - 1

SP - 1192

EP - 1197

BT - Structural Health Monitoring 2017

PB - DEStech Publications

ER -