Analysis of Acousto-Ultrasonic Characteristics for Contact-Type Transducers Coupled to an Orthotropic Composite Plate

Liu, T.; Kitipornchai, S.; Liew, K. M.; Wang, Gui

doi:10.1115/1.2894003

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…34.2. The transmitting transducer is an ultrasonic emitter, while the receiving transducer is an AE sensor [11]. In order to explore the feasibility of simplifying the conventional AUT set-up for quick and cost effective one-sided in-service inspection of composite structures, a vibro-acoustic set-up shown in Fig.…”

Section: Vibro-acoustic Testingmentioning

confidence: 99%

Damage Characterisation in Composite Laminates Using Vibro-Acoustic Technique

Andersen

Jombo

Ismail

et al. 2021

Springer Proceedings in Energy

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The need to characterise in-service damage in composite structures is increasingly becoming important as composites find higher utilisation in wind turbines, aerospace, automotive, marine, among others. This paper investigates the feasibility of simplifying the conventional acousto-ultrasonic technique set-up for quick and economic one-sided in-service inspection of composite structures. Acousto-ultrasonic technique refers to the approach of using ultrasonic transducer for local excitation while sensing the material response with an acoustic emission sensor. However, this involves transducers with several auxiliaries. The approach proposed herewith, referred to as vibro-acoustic testing, involves a low level of vibration impact excitation and acoustic emission sensing for damage characterisation. To test the robustness of this approach, first, a quasi-static test was carried out to impute low-velocity impact damage on three groups of test samples with different ply stacking sequences. Next, the vibro-acoustic testing was performed on all test samples with the acoustic emission response for the samples acquired. Using the acoustic emission test sample response for all groups, the stress wave factor was determined using the peak voltage stress wave factor method. The stress wave factor results showed an inverse correlation between the level of impact damage and stress wave factor across all the test sample groups. This corresponds with what has been reported in literature for acousto-ultrasonic technique; thus demonstrating the robustness of the proposed vibro-acoustic set-up. Structural health monitoring, impact damage, acousto-ultrasonic testing, non-destructive testing.

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Section: Vibro-acoustic Testingmentioning

confidence: 99%

Damage Characterisation in Composite Laminates Using Vibro-Acoustic Technique

Andersen

Jombo

Ismail

et al. 2021

Springer Proceedings in Energy

View full text Add to dashboard Cite

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Modelling the input–output behaviour of piezoelectric structural health monitoring systems for composite plates

Liu

Veidt

Kitipornchai

2003

Smart Mater. Struct.

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This paper investigates the input-output characteristics of structural health monitoring systems for composite plates based on permanently attached piezoelectric transmitter and sensor elements. Using dynamic piezoelectricity theory and a multiple integral transform method to describe the propagating and scattered flexural waves an electro-mechanical model for simulating the voltage input-output transfer function for circular piezoelectric transmitters and sensors adhesively attached to an orthotropic composite plate is developed. The method enables the characterization of all three physical processes, i.e. wave generation, wave propagation and wave reception. The influence of transducer, plate and attached electrical circuit characteristics on the voltage output behaviour of the system is examined through numerical calculations, both in frequency and the time domain. The results show that the input-output behaviour of the system is not properly predicted by the transducers' properties alone. Coupling effects between the transducers and the tested structure have to be taken into account, and adding backing materials to the piezoelectric elements can significantly improve the sensitivity of the system. It is shown that in order to achieve maximum sensitivity, particular piezoelectric transmitters and sensors need to be designed according to the structure to be monitored and the specific frequency regime of interest.

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Analysis of Acousto-Ultrasonic Characteristics for Contact-Type Transducers Coupled to an Orthotropic Composite Plate

Cited by 2 publications

References 25 publications

Damage Characterisation in Composite Laminates Using Vibro-Acoustic Technique

Damage Characterisation in Composite Laminates Using Vibro-Acoustic Technique

Modelling the input–output behaviour of piezoelectric structural health monitoring systems for composite plates

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