Results 11 to 20 of about 5,941 (251)

Electromechanical Impedance Response of a Cracked Timoshenko Beam [PDF]

open access: yesSensors, 2011
Typically, the Electromechanical Impedance (EMI) technique does not use an analytical model for basic damage identification. However, an accurate model is necessary for getting more information about any damage.
Cuiqin Wu   +4 more
doaj   +4 more sources

A Study of Concrete Slab Damage Detection Based on the Electromechanical Impedance Method [PDF]

open access: yesSensors, 2014
Piezoelectric lead zirconate titanate (PZT) is being gradually applied into practice as a new intelligent material for structural health monitoring. In order to study the damage detection properties of PZT on concrete slabs, simply supported reinforced ...
Xianyan Hu, Hongping Zhu, Dansheng Wang
doaj   +4 more sources

Sensing of Damage and Repair of Cement Mortar Using Electromechanical Impedance. [PDF]

open access: yesMaterials (Basel), 2019
Lead zirconium titanate (PZT) has recently emerged as a low-cost material for non-destructive monitoring for civil structures. Despite the numerous studies employing PZT transducers for structural health monitoring, no studies have assessed the effects of both damage and repair on the electromechanical impedance response in cementitious materials.
Taha H, Ball RJ, Paine K.
europepmc   +4 more sources

Structural Health Monitoring of Timber Using Electromechanical Impedance (EMI) Technique

open access: yesAdvances in Civil Engineering, 2020
Nowadays, the electromechanical impedance method has been widely used in the field of structural healthy monitoring, especially for the concrete and steel materials.
Fang Han   +4 more
doaj   +1 more source

Effect of the Matching Circuit on the Electromechanical Characteristics of Sandwiched Piezoelectric Transducers

open access: yesSensors, 2017
The input electrical impedance behaves as a capacitive when a piezoelectric transducer is excited near its resonance frequency. In order to increase the energy transmission efficiency, a series or parallel inductor should be used to compensate the ...
Shuyu Lin, Jie Xu
doaj   +1 more source

Digital programming of reciprocity breaking in resonant piezoelectric metamaterials

open access: yesPhysical Review Research, 2023
We demonstrate a digitally controlled piezoelectric metamaterial waveguide leveraging resonant, spatiotem-porally modulated synthetic impedance circuits for programmable reciprocity breaking.
Mustafa Alshaqaq   +2 more
doaj   +1 more source

Electrical Impedance Spectroscopy for Electro-Mechanical Characterization of Conductive Fabrics

open access: yesSensors, 2014
When we use a conductive fabric as a pressure sensor, it is necessary to quantitatively understand its electromechanical property related with the applied pressure.
Tushar Kanti Bera   +7 more
doaj   +1 more source

Implementation of Biomimicry for Detecting Composite Structure Damage Using Impedance-Based Non-Destructive Testing Method

open access: yesApplied Sciences, 2023
Up to date, biomimicry has aided in designing novel ideas and solving various problems in the field of civil engineering. For example, the concept of a load carrying process from a tree can be used to design an effective bridge.
Yi-Seul Kim, Wongi S. Na
doaj   +1 more source

Study of transient synchrophasors for the development of relay protection and control systems [PDF]

open access: yesE3S Web of Conferences, 2023
The paper discusses issues of improving control and relay protection systems based on the study and analysis of voltage and current synchrophasors of electromechanical and electromagnetic transient processes.
Mokeev Alexey, Piskunov Sergey
doaj   +1 more source

Probabilistic Neural Network and Fuzzy Cluster Analysis Methods Applied to Impedance-Based SHM for Damage Classification

open access: yesShock and Vibration, 2014
Impedance-based structural health monitoring technique is performed by measuring the variation of the electromechanical impedance of the structure caused by the presence of damage.
Lizeth Vargas Palomino   +2 more
doaj   +1 more source

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