Damage detection using piezoelectric transducers and the Lamb wave approach: I. System analysis

2008 ◽  
Vol 17 (2) ◽  
pp. 025033 ◽  
Author(s):  
X Wang ◽  
Y Lu ◽  
J Tang
Keyword(s):  
Damage Detection ◽  
Lamb Wave ◽  
System Analysis ◽  
Piezoelectric Transducers ◽  
Wave Approach

Parametric Analysis of Damage Detection Using Piezoelectric Transducer and Lamb Wave Approach

2007 ◽  
Author(s):  
X. Wang ◽  
Y. Li ◽  
J. Tang
Keyword(s):  
Damage Detection ◽  
Lamb Wave ◽  
Parametric Analysis ◽  
Structural Damage ◽  
Critical Role ◽  
Piezoelectric Transducers ◽  
Center Frequency ◽  
Sweet Spot ◽  
Wave Approach ◽  
Lamb Wave Propagation

Structural damage detection using piezoelectric transducers and the Lamb wave approach has been under intensive investigations. A commonly-pursued topic is the selection of system parameters such that the detection performance can be maximized. Previous studies have indicated that the excitation center frequency plays a critical role and suggested use the “sweet spot” frequency. This paper provides a comprehensive parametric analysis on Lamb wave propagation excited and sensed by piezoelectric transducers, where the “sweet spot” phenomenon is systematically explored by using correlated analytical, numerical, and experimental analyses. The analyses results can be used as guidelines for damage detection research.

Finite Element Simulation of Lamb Wave with Piezoelectric Transducers for Composite Plate Damage Detection

2009 ◽  
Vol 79-82 ◽  
pp. 1095-1098 ◽  
Author(s):  
Wen Zhong Qu ◽  
Li Xiao
Keyword(s):  
Finite Element ◽  
Damage Detection ◽  
Finite Element Simulation ◽  
Lamb Wave ◽  
Composite Plate ◽  
Lamb Waves ◽  
Piezoelectric Transducers ◽  
Thin Plates ◽  
Diagnostic Tools ◽  
Element Simulation

Structural health monitoring (SHM) is an emerging research area with multiple applications. Lamb waves are ultrasonic elastic waves that travel inside and along thin plates and is frequently used as diagnostic tools to detect damage in plate-like structures. In this paper, a transient dynamic finite element simulation of Lamb wave with piezoelectric transducers for damage detection in a composite plate is carried out. The embedded cross-shaped piezoelectric active sensor arrays were used to generate and receive guided Lamb waves propagating in the plate structure. A full-scale FEM model for the laminate was created using three-dimensional eight-node layered structural solid element and piezoelectric active sensors were created using coupled field elements on the commercial finite element code ANSYS platform. The beam forming technique of Lamb waves is used to locate damage in the plate .The results of the numerical simulation demonstrate the effectiveness of the approach.

scholarly journals Lamb Wave Scattering Analysis for Interface Damage Detection between a Surface-Mounted Block and Elastic Plate

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 860
Author(s):  
Mikhail V. Golub ◽  
Alisa N. Shpak ◽  
Inka Mueller ◽  
Sergey I. Fomenko ◽  
Claus-Peter Fritzen
Keyword(s):  
Damage Detection ◽  
Elastic Plate ◽  
Lamb Wave ◽  
Wave Scattering ◽  
Hybrid Approach ◽  
Guided Wave ◽  
Open Crack ◽  
Damage Indices ◽  
Impulse Function ◽  
Thin Walled

Since stringers are often applied in engineering constructions to improve thin-walled structures’ strength, methods for damage detection at the joints between the stringer and the thin-walled structure are necessary. A 2D mathematical model was employed to simulate Lamb wave excitation and sensing via rectangular piezoelectric-wafer active transducers mounted on the surface of an elastic plate with rectangular surface-bonded obstacles (stiffeners) with interface defects. The results of a 2D simulation using the finite element method and the semi-analytical hybrid approach were validated experimentally using laser Doppler vibrometry for fully bonded and semi-debonded rectangular obstacles. A numerical analysis of fundamental Lamb wave scattering via rectangular stiffeners in different bonding states is presented. Two kinds of interfacial defects between the stiffener and the plate are considered: the partial degradation of the adhesive at the interface and an open crack. Damage indices calculated using the data obtained from a sensor are analyzed numerically. The choice of an input impulse function applied at the piezoelectric actuator is discussed from the perspective of the development of guided-wave-based structural health monitoring techniques for damage detection.

Sign in / Sign up

Export Citation Format

Share Document