Computational Simulation of Microflaw Detection in Carbon-Fiber-Reinforced Polymers

Santos, Mário; Santos, Jaime; Petrella, Lorena

doi:10.3390/electronics11182836

Cited by 3 publications

(1 citation statement)

References 30 publications

(42 reference statements)

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“…It uses less memory and is user-friendly [40,41]. Several authors have used the k-Wave toolbox in diverse NDT applications, such as nonlinear ultrasound propagation in absorbing media [42], attenuation in ultrasonic computed tomography [43], time domain power law attenuation in tissues [44], one-sided ultrasonic nondestructive evaluation [45], high intensity focused ultrasound [46], ultrasonic transducer field modeling [47], 3-D ultrasound imaging [48], simulation of A-scan signals in ophthalmology [49], microflaw detection in carbon fiber reinforced polymers [50], and guided waves in layered structures [51,52].…”

Section: Introductionmentioning

confidence: 99%

Adhesive Single-Lap Joint Evaluation Using Ultrasound Guided Waves

Santos

2023

Applied Sciences

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This work deals with the evaluation of adhesive single-lap joints using ultrasound guided waves; in particular, it is intended to characterize the signal propagation when defects are present in the adhesive joint by simulation and experimental approaches. The propagation of guided waves in the joint is developed from matrix formulations. The behavior of the guided wave modes that exist in the bonded region is characterized. It is found that its amplitudes can be estimated from the properties of the incoming wave that propagates in the non-bonded region. It is verified that the excitation of these modes is related to the degree to which the shapes of both modes match each other. A 3D simulation of two aluminum-bonded plates using 500 kHz ultrasonic transducers in a pitch-and-catch configuration was implemented using the Matlab k-Wave toolbox. Scattering effects, due to some defects located in the bond line of the joints, were simulated. The experimental setup with some artificial defects produced in the aluminum joints was used in order to compare it with the simulation. Qualitative agreement was observed between the two approaches. The observed deviation can be due to the different characteristics of the experimental and simulated defects.

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Section: Introductionmentioning

confidence: 99%

Adhesive Single-Lap Joint Evaluation Using Ultrasound Guided Waves

Santos

2023

Applied Sciences

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K-wave modelling of ultrasound wave propagation in aerogels and the effect of physical parameters on attenuation and loss

Ghimire

Sabri

2023

Appl. Phys. A

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The complex and highly tortuous microstructure of aerogels has led to the superior insulating capabilities that aerogels are known for. This open cell microstructure has also created a unique acoustic fingerprint that can be manipulated to achieve maximum acoustic insulation/absorption. The goal of this work was to create a computational approach for predicting sound propagation behavior in monolithic aerogels using the wave solving tool k-wave. The model presented here explores attenuation and loss values as a function of density, angle of incidence of wave, and medium (aqueous and non-aqueous) for frequencies in the range of 0.5–1 MHz. High numerical accuracy without a significant computational demand was achieved. Results indicate that loss increases as a function of frequency and the medium that the incoming wave is travelling through dominates the attenuation, loss, and other characteristics more than angle of incidence, and pore structure.

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Adhesive Single-Lap Joints Evaluation Using Ultrasonic Guided Waves

Santos¹,

Santos²

2023

Preprint

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This work deals with the evaluation of adhesive single-lap joints using ultrasonic guided waves. An adhesive bonded lap joint can be modelled as a three-layer system made up of two adherents and an adhesive. The propagation of guided waves in the joint is developed from matrix formulations. The behavior of the different guided wave modes that propagate in the bonded region is characterized and it is found that their relative amplitudes can be estimated based on the properties of the incoming wave that propagates in the non-bonded region. It was verified that the excitation of these modes is ruled by the degree in which the shapes of both modes match each other. A 3D simulation of two aluminium bonded plates using 500 kHz ultrasonic transducers in a pitch and catch configuration was implemented using the Matlab k-Wave toolbox. Scattering effects due to some produced defects located in the bond line of the lap joints were simulated. Experimental setup with some artificial defects produced in the aluminum joints were used in order to compare with the simulated. Qualitative agreement was observed for the two approaches. The observed deviation can be due to the different characteristics of the experimental and simulated defects.

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Computational Simulation of Microflaw Detection in Carbon-Fiber-Reinforced Polymers

Cited by 3 publications

References 30 publications

Adhesive Single-Lap Joint Evaluation Using Ultrasound Guided Waves

Adhesive Single-Lap Joint Evaluation Using Ultrasound Guided Waves

K-wave modelling of ultrasound wave propagation in aerogels and the effect of physical parameters on attenuation and loss

Adhesive Single-Lap Joints Evaluation Using Ultrasonic Guided Waves

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