A parametric study of piezoceramic thickness effect on the generation of fundamental Lamb modes

Mohamed, Ramy; Demers, Dominique; Masson, Patrice

doi:10.1117/12.880616

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resonances play a major role in the excitation of Lamb waves. For thicker piezoceramics it is the dominant effect which influences the amplitudes of the excited Lamb waves Ha (2010), Mohamed et al (2011). This effect can be used to reduce the input energy of the actuators.…”

Section: Vibration Of the Coupled Piezoceramic Actuatormentioning

confidence: 99%

Analysis of the dynamical behavior of piezoceramic actuators using piezoelectric isogeometric finite elements

Willberg¹

2016

Advances in Computational Design

View full text Add to dashboard Cite

In this paper an electromechanically coupled isogeometric finite element is utilized to analyse Lamb wave excitation with piezoceramic actuators. An effective actuator design reduces the energy needed for Lamb wave excitation, which is beneficial if a structural health monitoring system should be applied for a structure. For a better understanding of the actuator behavior the piezoeceramics are studied both free and bonded at a structure. The numerical part of the analysis is performed utilizing isogeometric finite elements. To obtain the optimal performance for the numerical analysis the effect of k-refinement of the isogeometric element with respect to the convergence is studied and discussed. The optimal numerical setup with the best convergence rate is proposed and is validated with free piezoeceramic actuators. The validated model is then utilized to study the impact of actuator shape and adhesive bondline effect to the wave amplitude. The study shows that simplified analytical equations do not predict the optimal excitation frequencies for all piezoceramic designs accurately.

show abstract

Section: Vibration Of the Coupled Piezoceramic Actuatormentioning

confidence: 99%

Analysis of the dynamical behavior of piezoceramic actuators using piezoelectric isogeometric finite elements

Willberg¹

2016

Advances in Computational Design

View full text Add to dashboard Cite

show abstract

Crack orientation detection in plate-like structures via Lamb wave specular reflection analysis

Zhang

Zhai

2021

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

The determination of crack orientation plays an important role in the non-destructive evaluation (NDE) of plate-like structures. In this paper, the interaction between Lamb waves and cracks is investigated using the time domain spectral element method (SEM) as the simulation tool. On that basis, we analyse the geometric principle of specular reflections and propose an efficient crack angle detection algorithm. During the process, four sensors take turns to excite the Lamb wave which would result in twelve crack reflection signals. Using the corresponding actuator as the centre and the reflection length as the radius, we can obtain twelve reflection circles in total. When these reflections are specular, the mirror points of the actuators with respect to the crack line are exactly the intersection points of the circles. Thus, we can obtain the crack angle by this geometric relation. Validations on different cracks are made and the result of the algorithm shows a good agreement with the real value.

show abstract

A parametric study of piezoceramic thickness effect on the generation of fundamental Lamb modes

Cited by 2 publications

References 0 publications

Analysis of the dynamical behavior of piezoceramic actuators using piezoelectric isogeometric finite elements

Analysis of the dynamical behavior of piezoceramic actuators using piezoelectric isogeometric finite elements

Crack orientation detection in plate-like structures via Lamb wave specular reflection analysis

Contact Info

Product

Resources

About