IDENTIFICATION SURFACE/SUBSURFACE STRUCTURAL DAMAGES BASED ON LAMB WAVE PROPAGATION

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GHAMARI M.; TAHAYE ABADI M.

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Journal Paper

Paper Information

Journal: Journal of Aerospace Mechanics Year:2014 | Volume:10 | Issue:1 Page(s): 55-65

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Information Journal Paper

Title

IDENTIFICATION SURFACE/SUBSURFACE STRUCTURAL DAMAGES BASED ON LAMB WAVE PROPAGATION

Author(s)

GHAMARI M. | TAHAYE ABADI M. | Issue Writer Certificate

Keywords

STRUCTURAL HEALTH MONITORINGQ2

LAMB WAVESQ2

ELASTIC WAVESQ2

PIEZOELECTRICQ2

FINITE ELEMENT ANALYSISQ2

Abstract

The paper concerns with the identification of the surface and subsurface defects based on Lamb wave generation and propagation in a structure with PIEZOELECTRIC wafer active sensor. The PIEZOELECTRIC wafer acts as an actuator at the initial instant for Lamb wave generation and then as sensor to monitor LAMB WAVES reflected from different surfaces of the structure. A finite element model is developed to analyze the response of the structure and PIEZOELECTRIC wafer subjected to initial activation signal. The model simulates the generation of LAMB WAVES which are divided into symmetric and anti-symmetric waves propagating with different velocities. The reflection of LAMB WAVES from exterior surfaces of the structure or the surfaces of the defects are identified using the present model. The performance of the damage identification procedure is evaluated for a plate structure with single or multiple transverse grooves whose dimensions are very small compared to structural dimensions in order to simulate the transverse cracks in the structure. The results have shown that LAMB WAVES are very sensitive to transverse grooves and determine the location of transverse damages with a reasonable accuracy.

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APA: Copy

GHAMARI, M., & TAHAYE ABADI, M.. (2014). IDENTIFICATION SURFACE/SUBSURFACE STRUCTURAL DAMAGES BASED ON LAMB WAVE PROPAGATION. AEROSPACE MECHANICS JOURNAL, 10(1), 55-65. SID. https://sid.ir/paper/102039/en

Vancouver: Copy

GHAMARI M., TAHAYE ABADI M.. IDENTIFICATION SURFACE/SUBSURFACE STRUCTURAL DAMAGES BASED ON LAMB WAVE PROPAGATION. AEROSPACE MECHANICS JOURNAL[Internet]. 2014;10(1):55-65. Available from: https://sid.ir/paper/102039/en

IEEE: Copy

M. GHAMARI, and M. TAHAYE ABADI, “IDENTIFICATION SURFACE/SUBSURFACE STRUCTURAL DAMAGES BASED ON LAMB WAVE PROPAGATION,” AEROSPACE MECHANICS JOURNAL, vol. 10, no. 1, pp. 55–65, 2014, [Online]. Available: https://sid.ir/paper/102039/en

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