Results 1 to 10 of about 4,578 (258)

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   +7 more sources

A PZT-Based Electromechanical Impedance Method for Monitoring the Soil Freeze–Thaw Process [PDF]

open access: yesSensors, 2019
It is important to conduct research on the soil freeze–thaw process because concurrent adverse effects always occur during this process and can cause serious damage to engineering structures.
Jicheng Zhang   +3 more
doaj   +5 more sources

System-on-Chip Integration of a New Electromechanical Impedance Calculation Method for Aircraft Structure Health Monitoring [PDF]

open access: yesSensors, 2012
The work reported on this paper describes a new methodology implementation for active structural health monitoring of recent aircraft parts made from carbon-fiber-reinforced polymer.
Daniel Medale   +5 more
doaj   +3 more sources

Study on Vibration Characteristics of Functionally Graded Material Composite Spherical Piezoelectric Transducer [PDF]

open access: yesSensors
Non-uniform composite structures for transducers exhibit considerable potential in enhancing impedance matching and efficiency. Here, a functionally graded material composite spherical piezoelectric transducer (FGM-cSPT) is proposed, and a three-port ...
Sha Wang, Junjie Shan
doaj   +2 more sources

Wireless High Rotational Speed Assessment by Exploiting an RF Sensor Tag System and Equivalent-Time Reconstruction [PDF]

open access: yesSensors
Rotational speed monitoring is essential in many industrial and electromechanical systems. This paper presents a rotational speed measurement method based on a wireless impedance sensing system leveraging the radio-frequency coupling between a passive ...
Armin Gharibi   +2 more
doaj   +2 more sources

Modelling the Electromechanical Impedance Method for the Prediction of the Biomechanical Behavior of Dental Implant Stability

open access: yesProcedia Engineering, 2015
AbstractWe propose the electromechanical impedance (EMI) technique to assess the stability of dental implants. The technique consists of bonding a piezoelectric transducer to the element to be monitored. Conventionally, electromechanical admittance is used to diagnose structural damage.
Piervincenzo Rizzo   +1 more
exaly   +3 more sources

Methods for diagnosing defects in glued joints - a methods review [PDF]

open access: yesMATEC Web of Conferences, 2021
The paper presents the applications of glued joints in many industry branches. The advantages and disadvantages of glued joints as well as the methods of detecting weld damage are presented. The methods of damage analysis to the glued joints were divided
Karolewski Sebastian   +2 more
doaj   +1 more source

Piezoelectric Wafer Active Sensor Transducers for Acoustic Emission Applications

open access: yesSensors, 2023
Piezoelectric materials are defined by their ability to display a charge across their surface in response to mechanical strain, making them great for use in sensing applications.
Connor Griffin, Victor Giurgiutiu
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 Adhesive Bonds by Mechanical Tests, Ultrasounds and Electromechanical Impedance Method [PDF]

open access: yesStructural Health Monitoring 2017, 2017
The paper deals with adhesive bonding of CFRP plates. Adhesive bonding of composites is considered as good alternative to riveting, provided that good tools are available to assess the bond quality after manufacturing and during the lifetime of structures.
Paweł Henryk Malinowski   +3 more
openaire   +1 more source

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