Guided wave interaction with hole damage using the local interaction simulation approach

Obenchain, Matthew B.; Cesnik, Carlos E. S.

doi:10.1088/0964-1726/23/12/125010

Cited by 15 publications

(4 citation statements)

References 24 publications

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“…A conventional finite element model containing the detailed information of each lamina may become computationally intensive and it is difficult to accommodate the accuracy requirements for highfrequency and short wavelength guided waves over long propagation distances. 14 Several highly efficient techniques have been developed for modeling guided wave propagation in composite plates such as the global matrix method (GMM), 15,16 local interaction simulation approach (LISA), 10,17 elastodynamic finite integration technique (EFIT), 18 spectral finite element method (SFEM), 19,20 and semi-analytical finite element (SAFE) method. 21 Glushkov et al 22 proposed a Green's matrix-based method to investigate the guided wave excitation and diffraction by surface obstacles in composite plates.…”

Section: Introductionmentioning

confidence: 99%

Guided wave excitation and propagation in damped composite plates

Mei

Giurgiutiu

2018

Structural Health Monitoring

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Guided wave attenuation in composites due to material damping is strong, anisotropic, and cannot be neglected. Material damping is a critical parameter in selection of a particular wave mode for long-range structural health monitoring in composites. In this article, a semi-analytical finite element approach is presented to model guided wave excitation and propagation in damped composite plates. The theoretical framework is formulated using finite element method to describe the material behavior in the thickness direction while assuming analytical expressions in the wave propagation direction along the plate. In the proposed method, the Kelvin–Voigt damping model using a complex frequency-dependent stiffness matrix is utilized to account for anisotropic damping effects of composites. Thus, the existing semi-analytical finite element approach is being extended to include material damping effect. Theoretical predictions are experimentally validated using scanning laser Doppler vibrometer measurements of guided wave propagation generated by a circular piezoelectric wafer active sensor transducer in a unidirectional carbon fiber reinforced polymer composite plate. The proposed method achieves good agreement with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Guided wave excitation and propagation in damped composite plates

Mei

Giurgiutiu

2018

Structural Health Monitoring

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“…In such a way LISA -although being based on the FD discretization -outperforms the conventional FD algorithms. The advantage of using SIM for modelling wave propagation has been demonstrated in composite laminates [8] and metallic structures [9]. Enhancement in computational accuracy, efficiency and reliability for wave propagation modelling based on LISA with SIM, when compared with the use of then traditional FD methods, has been already confirmed [5].…”

Section: Local Interaction Simulation Approach (Lisa)mentioning

confidence: 92%

Nonlinear crack-wave interaction in shear horizontal wave propagation: numerical modelling of local elastic and dissipative effects

Nowak

Osika

Radecki

et al. 2023

Health Monitoring of Structural and Biological Systems XVII

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Various classical and non-classical nonlinear effects have been observed in ultrasonic wave propagation and used for contact-type damage detection. The former relates to higher harmonic generation, whereas the latter is based nonlinear vibro-acoustic modulations effects. More recently both nonlinear effects have been observed in shear horizontal wave propagation. However, the nonlinear crack-wave interaction is still not fully understood. It is assumed that this interaction is enhanced by local nonlinear elasticity and dissipation of elastic waves. The latter effect is the major focus of the paper. Previous experimental research studies demonstrate that high-frequency ultrasonic waves propagation through crack faces that are in contact–and perturbed by low-frequency excitation–exhibit local nonlinear effects of elastic and dissipative nature. The amplitude level of these effects depends on applied stresses. Both nonlinear effects have a great potential for structural damage detection. However, more theoretical and modelling research work is needed to fully understand these non-classical nonlinear effects. Numerical simulations based on nonlinear crack-wave interaction are investigated in the paper. Three models of local nonlinearity are investigated. These are: the Coulomb friction, the nonlinear viscous damping and the hysteretic stress-strain models. Nonlinear wavefield distortions–due to crack-wave interactions–are observed and analyzed. Numerical simulations are performed using the Local Interaction Simulation Approach (LISA), implemented for shear horizontal wave propagation. Wave amplitudes corresponding to generated higher harmonics and modulated sidebands are investigated in the presented work.

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“…Combined with the models of elastic wave scattering on joints of plates [49,50], e.g., the thermal weld in the PE layer, the use of these methods could provide a reliable basis for the simulation of guided wave propagation in undamaged structures. One of the fundamental mechanisms of elastic wave interaction with damage is forward and backward scattering, both in the case of introduced cuts and simulated erosion of the PE layer [51][52][53][54][55][56][57]. The amplitude of transmitted and backscattered waves depends on various factors, including excitation frequency (which determines the relative length of the excited Lamb waves and the extent of damage) and damage depth [53].…”

Section: Application Of Pzt Sensors For Damage Detection Of Pe Layermentioning

confidence: 99%

Structural Health Monitoring of Chemical Storage Tanks with Application of PZT Sensors

Dziendzikowski,

Kozera,

Kowalczyk

et al. 2023

Sensors

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Chemical pressure storage tanks are containers designed to store fluids at high pressures, i.e., their internal pressure is higher than the atmospheric pressure. They can come in various shapes and sizes, and may be fabricated from a variety of materials. As aggressive chemical agents stored under elevated pressures can cause significant damage to both people and the environment, it is essential to develop systems for the early damage detection and the monitoring of structural integrity of such vessels. The development of early damage detection and condition monitoring systems could also help to reduce the maintenance costs associated with periodic inspections of the structure and unforeseen operational breaks due to unmonitored damage development. It could also reduce the related environmental burden. In this paper, we consider a hybrid material composed of glass-fiber-reinforced polymers (GFRPs) and a polyethylene (PE) layer that is suitable for pressurized chemical storage tank manufacturing. GFRPs are used for the outer layer of the tank structure and provides the dominant part of the construction stiffness, while the PE layer is used for protection against the stored chemical medium. The considered damage scenarios include simulated cracks and an erosion of the inner PE layer, as these can be early signs of structural damage leading to the leakage of hazardous liquids, which could compromise safety and, possibly, harm the environment. For damage detection, PZT sensors were selected due to their widely recognized applicability for the purpose of structural health monitoring. For sensor installation, it was assumed that only the outer GFRP layer was available as otherwise sensors could be affected by the stored chemical agent. The main focus of this paper is to verify whether elastic waves excited by PZT sensors, which are installed on the outer GFRP layer, can penetrate the GFRP and PE interface and can be used to detect damage occurring in the inner PE layer. The efficiency of different signal characteristics used for structure evaluation is compared for various frequencies and durations of the excitation signal as well as feasibility of PZT sensor application for passive acquisition of acoustic emission signals is verified.

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Guided wave interaction with hole damage using the local interaction simulation approach

Cited by 15 publications

References 24 publications

Guided wave excitation and propagation in damped composite plates

Guided wave excitation and propagation in damped composite plates

Nonlinear crack-wave interaction in shear horizontal wave propagation: numerical modelling of local elastic and dissipative effects

Structural Health Monitoring of Chemical Storage Tanks with Application of PZT Sensors

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