Multiple-mode Lamb wave scattering simulations using 3D elastodynamic finite integration technique

Leckey, Cara A. C.; Rogge, Matthew D.; Miller, Corey; Hinders, Mark K.

doi:10.1016/j.ultras.2011.08.003

Cited by 51 publications

(39 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, a short space FT is applied to generate a space-frequency-wavenumber representation ( , , ) S f x k , as [11,17,18,51,52]:…”

Section: Wavenumber Nalysis For Amage Uantificationmentioning

confidence: 99%

Multi-site delamination detection and quantification in composites through guided wave based global-local sensing

Tian¹,

Leckey²,

Yu³

2017

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. This paper presents a guided wave based global-local sensing method for rapid detection and quantification of multi-site delamination damage in large composite panels. The global-local approach uses a hybrid system consisting of a piezoelectric transducer (PZT) for generating guided waves and a non-contact scanning laser Doppler vibrometer (SLDV) for acquiring guided wave data. The global-local method is performed in two steps. First, a phased array configured of a small number of SLDV scan points (for example 10×10 points in a rectangular grid array) performs inspection over the entire plate to detect and locate damage. Local areas are identified as potential damage regions for the second step. Then high density wavefield measurements are taken over the identified areas and wavefield analysis is performed to quantitatively evaluate the damage. For the proof of concept in case with multi-site damage, the global-local approach is demonstrated on a carbon fiber reinforced polymer (CFRP) composite plate with two sites of impact-induced delamination damage. In the first step, the locations of two delamination sites are detected by the phased array method. In the second step, the delamination size and shape are evaluated using wavefield analysis. The detected delamination location, size and shape agree well with those of ultrasonic C-scan and the method led to a 93% reduction in inspection time compared to a full SLDV dense grid scan.

show abstract

“…Then, a short space FT is applied to generate a space-frequency-wavenumber representation ( , , ) S f x k , as [11,17,18,51,52]:…”

Section: Wavenumber Nalysis For Amage Uantificationmentioning

confidence: 99%

Multi-site delamination detection and quantification in composites through guided wave based global-local sensing

Tian¹,

Leckey²,

Yu³

2017

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…Alternatively, if the signal is a function of a spatial quantity, the CWT results in a space-wavenumber representation [11,12]. The use of the 1D CWT is applicable for data obtained along a linear path such as the case for the composite stringer.…”

Section: -D Continuous Wavelet Transformmentioning

confidence: 99%

Wavenumber imaging for damage detection and measurement

Rogge

Johnston

2012

AIP Conference Proceedings

View full text Add to dashboard Cite

ABSTRACT. This paper presents a method for analyzing ultrasonic wavefield data using the Continuous Wavelet Transform (CWT) applied in the spatial domain. Unlike data obtained by sparse arrays of transducers, full wavefield data contains information local to the structure and can be used to obtain more detailed measurements of damage type, location, size, etc. By calculating the CWT of the wavefield in the spatial domain, the wavenumber spectrum is determined for the inspected locations. Because wavenumber is affected by the local geometry and material properties of the structure through which Lamb waves propagate, the wavenumber spectrum can be analyzed to assess the location, severity, and size of damage. The technique is first applied to experimental wavefield data obtained using a laser Doppler vibrometer and automated positioning stage. The out-of-plane velocity along the length of a composite stringer was measured to detect the presence of delaminations within the composite overwrap. Next, simulated corrosion is detected and measured within an aluminum plate using the two dimensional CWT. The experimental results show the usefulness of the technique for vehicle structure inspection applications.

show abstract

“…A number of examples were presented in the survey that shows the feasibility of using EFIT to simulate complicated wave scattering phenomena. Recently, Leckey et al 24 implemented the three-dimensional (3D) EFIT to investigate the Lamb wave scattering at a flat-bottom hole and a void in diffusion bonded aluminium plate. They showed that the 3D simulation can provide additional insight into complicated Lamb wave scattering behaviour.…”

Section: A Lamb Waves In Complex Structuresmentioning

confidence: 99%

Scattering characteristics of Lamb waves from debondings at structural features in composite laminates

Veidt

2012

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

This article investigates the scattering characteristics of Lamb waves from a debonding at a structural feature in a composite laminate. This study specifically focuses on the use of the low frequency fundamental antisymmetric (A0) Lamb wave as the incident wave for debonding detection. Three-dimensional finite element (FE) simulations and experimental measurements are used to investigate the scattering phenomena. Good agreement is obtained between the FE simulations and experimental results. Detailed parameter studies are carried out to further investigate the relationship between the scattering amplitudes and debonding sizes. The results show that the amplitude of the scattered A0 Lamb wave is sensitive to the debonding size, which indicates the potential of using the low frequency A0 Lamb wave as the interrogating wave for debonding detection and monitoring. The findings of the study provide improved physical insights into the scattering phenomena, which are important to further advance damage detection techniques and optimize transducer networks.

show abstract

Multiple-mode Lamb wave scattering simulations using 3D elastodynamic finite integration technique

Cited by 51 publications

References 33 publications

Multi-site delamination detection and quantification in composites through guided wave based global-local sensing

Multi-site delamination detection and quantification in composites through guided wave based global-local sensing

Wavenumber imaging for damage detection and measurement

Scattering characteristics of Lamb waves from debondings at structural features in composite laminates

Contact Info

Product

Resources

About