Journal ArticleDOI
The response of rectangular piezoelectric sensors to Rayleigh and Lamb ultrasonic waves
TLDR
In this paper, the fundamental response of surface-bonded piezoelectric sensors to ultrasonic waves is examined, starting with harmonic excitation fields and moving to broadband and narrowband excitation field.Abstract:
A fundamental understanding of the response of piezoelectric transducer patches to ultrasonic waves is of increasing interest to the field of structural health monitoring While analytical solutions exist on the interaction of a piezoelectric actuator with the generated Lamb waves, the behavior of a piezoelectric sensor has only been examined for the limited case of a piezo-actuated Lamb wave in a pitch-catch configuration This paper focuses on the fundamental response of surface-bonded piezoelectric sensors to ultrasonic waves The response to both Rayleigh waves and Lamb waves is examined, starting with harmonic excitation fields and moving to broadband and narrowband excitation fields General oblique incidence of the wave on rectangular sensors is treated first; parallel incidence is then derived as a particular case The solutions are developed analytically for the harmonic and the narrowband excitations, and semianalytically for the broadband excitation The results obtained can be used to design uread more
Citations
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Journal ArticleDOI
Guided wave based structural health monitoring: A review
TL;DR: In this paper, the authors provide a state-of-the-art review of guided wave based structural health monitoring (SHM) and highlight the future directions and open areas of research in guided wave-based SHM.
Journal ArticleDOI
Temperature effects in ultrasonic Lamb wave structural health monitoring systems.
TL;DR: The study shows substantial changes in Lamb wave amplitude response caused solely by temperature excursions, and can provide a basis for the compensation of temperature effects in guided-wave damage detection systems.
Journal ArticleDOI
Macro-fiber composite piezoelectric rosettes for acoustic source location in complex structures
TL;DR: An approach based upon the employment of piezoelectric transducer rosettes is proposed for passive damage or impact location in anisotropic or geometrically complex structures as discussed by the authors.
Journal ArticleDOI
Environmental and operational conditions effects on Lamb wave based structural health monitoring systems: A review
Rahim Gorgin,Ying Luo,Zhanjun Wu +2 more
TL;DR: A state of the art review of the effects of EOCs parameters including: temperature, moisture, load, vibration and bonding (adhesive layer shear modulus and thickness, bond defects), on Lamb wave propagation is provided.
Journal ArticleDOI
Ultrasonic guided-waves characterization with Warped Frequency Transforms
TL;DR: The proposed ldquoWarped Frequency Transformrdquo (WFT) is based on a time-frequency domain tiling chosen to match the spectro-temporal structure of the different propagating guided waves by selecting an appropriate warping map which generates non-linearly frequency modulated atoms.
References
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Journal ArticleDOI
Use of piezoelectric actuators as elements of intelligent structures
Edward F. Crawley,Javier de Luis +1 more
TL;DR: In this paper, a scaling analysis is performed to demonstrate that the effectiveness of actuators is independent of the size of the structure and evaluate various piezoelectric materials based on their effectiveness in transmitting strain to the substructure.
Journal ArticleDOI
Tuned Lamb-Wave Excitation and Detection with Piezoelectric Wafer Active Sensors for Structural Health Monitoring
TL;DR: In this paper, the capability of embedded piezoelectric wafer active sensors (PWAS) to excite and detect tuned Lamb waves for structural health monitoring is explored.
Journal ArticleDOI
A two-dimensional Fourier transform method for the measurement of propagating multimode signals
D. N. Alleyne,Peter Cawley +1 more
TL;DR: In this article, a two-dimensional Fourier transform (2D FFT) was used to measure the amplitudes and velocities of the Lamb waves propagating in a plate, the output of the transform being presented using an isometric projection which gives a three-dimensional view of the wave-number dispersion curves.
Journal ArticleDOI
Damage detection in composite materials using lamb wave methods
TL;DR: In this article, the authors presented an experimental and analytical survey of candidate methods for in situ damage detection of composite materials, including delamination, transverse ply cracks and through-holes.
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Guided Lamb waves for identification of damage in composite structures: A review
Zhongqing Su,Lin Ye,Ye Lu +2 more