Damage detection in a large composite panel of five stiffeners using Lamb wave signals

Ye Lu; Lin Ye; Dong Wang; Zhaorui Zhong; Israel Herszberg

Damage detection in a large composite panel of five stiffeners using Lamb wave signals

Ye Lu, Lin Ye, Dong Wang, Zhaorui Zhong, Israel Herszberg

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

The propagation characteristics of Lamb waves activated and collected by an active piezoelectric (PZT) sensor network in a CF/EP composite panel of five stiffeners were investigated. In particular, wave attenuation in terms of propagation distance and wave energy loss induced by reinforced stiffeners were evaluated. The interaction between Lamb wave modes and a through-thickness hole of 11.9 mm diameter was subsequently examined. Given the complexity of the captured wave signals, an inverse algorithm based on correlation between wave signals in the benchmark and damaged structures was developed. Different combinations of actuator-sensor paths were used to estimate the location of damage. The diagnostic results demonstrate that the proposed approach has a good capability for defining location of damage using the probability of occurrence of damage.

Original language	English
Pages (from-to)	136-142
Number of pages	7
Journal	Materials Forum
Volume	33
Publication status	Published - 1 Dec 2008
Externally published	Yes
Event	Asia-Pacific Workshop on Structural Health Monitoring 2008 - Melbourne, Australia Duration: 2 Dec 2008 → 4 Dec 2008 Conference number: 2nd

Keywords

Composite structures
Damage identification
Lamb waves
Sensor networks
Wave attenuation

Cite this

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title = "Damage detection in a large composite panel of five stiffeners using Lamb wave signals",

abstract = "The propagation characteristics of Lamb waves activated and collected by an active piezoelectric (PZT) sensor network in a CF/EP composite panel of five stiffeners were investigated. In particular, wave attenuation in terms of propagation distance and wave energy loss induced by reinforced stiffeners were evaluated. The interaction between Lamb wave modes and a through-thickness hole of 11.9 mm diameter was subsequently examined. Given the complexity of the captured wave signals, an inverse algorithm based on correlation between wave signals in the benchmark and damaged structures was developed. Different combinations of actuator-sensor paths were used to estimate the location of damage. The diagnostic results demonstrate that the proposed approach has a good capability for defining location of damage using the probability of occurrence of damage.",

keywords = "Composite structures, Damage identification, Lamb waves, Sensor networks, Wave attenuation",

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T1 - Damage detection in a large composite panel of five stiffeners using Lamb wave signals

AU - Lu, Ye

AU - Ye, Lin

AU - Wang, Dong

AU - Zhong, Zhaorui

AU - Herszberg, Israel

N1 - Conference code: 2nd

PY - 2008/12/1

Y1 - 2008/12/1

N2 - The propagation characteristics of Lamb waves activated and collected by an active piezoelectric (PZT) sensor network in a CF/EP composite panel of five stiffeners were investigated. In particular, wave attenuation in terms of propagation distance and wave energy loss induced by reinforced stiffeners were evaluated. The interaction between Lamb wave modes and a through-thickness hole of 11.9 mm diameter was subsequently examined. Given the complexity of the captured wave signals, an inverse algorithm based on correlation between wave signals in the benchmark and damaged structures was developed. Different combinations of actuator-sensor paths were used to estimate the location of damage. The diagnostic results demonstrate that the proposed approach has a good capability for defining location of damage using the probability of occurrence of damage.

AB - The propagation characteristics of Lamb waves activated and collected by an active piezoelectric (PZT) sensor network in a CF/EP composite panel of five stiffeners were investigated. In particular, wave attenuation in terms of propagation distance and wave energy loss induced by reinforced stiffeners were evaluated. The interaction between Lamb wave modes and a through-thickness hole of 11.9 mm diameter was subsequently examined. Given the complexity of the captured wave signals, an inverse algorithm based on correlation between wave signals in the benchmark and damaged structures was developed. Different combinations of actuator-sensor paths were used to estimate the location of damage. The diagnostic results demonstrate that the proposed approach has a good capability for defining location of damage using the probability of occurrence of damage.

KW - Composite structures

KW - Damage identification

KW - Lamb waves

KW - Sensor networks

KW - Wave attenuation

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M3 - Conference article

AN - SCOPUS:80053265586

VL - 33

SP - 136

EP - 142

JO - Materials Forum

JF - Materials Forum

SN - 1447-6738

T2 - Asia-Pacific Workshop on Structural Health Monitoring 2008

Y2 - 2 December 2008 through 4 December 2008

ER -

Damage detection in a large composite panel of five stiffeners using Lamb wave signals

Abstract

Keywords

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