Results 31 to 40 of about 27,292 (164)

New High Efficiency and Strength Bending Strain Sensor Based on Piezoelectric Stacks

Buildings
This article is devoted to a mathematical model of a new piezoelectric sensor used for measuring bending strains. The first simple model of a piezoelectric sensor of bending deformations (we will call it a classical sensor) was presented in our previous ...
Vladimir Sidorov, Nelly Rogacheva, Yulia Zheglova   +2 more
doaj   +1 more source

Direct and Extended Piezoresistive and Piezoelectric Strain Fusion for a Wide Band PVDF/MWCNT-Based 3D Force Sensor

IEEE Access, 2021
This paper presents a novel 3D force sensor design based on in-situ nanocomposite strain sensors. The polymer matrix of the polyvinylidene fluoride (PVDF) and multi-walled carbon nanotubes (MWCNT) conductive filler nanocomposite film have been chosen as ...
Ahmed Alotaibi, Sohel Anwar
doaj   +1 more source

Design and Experimental Evaluation of a Dual-Cantilever Piezoelectric Film Sensor with a Broadband Response and High Sensitivity

Micromachines, 2023
Cantilever-beam-type PVDF (Polyvinylidene Fluoride) piezoelectric film sensors are commonly utilized for vibration signal detection due to their simple structures and ease of processing.
Wei Xin, Zhaoyang He, Chaocheng Zhao
doaj   +1 more source

Three-Dimensional Axisymmetric Analysis of Annular One-Dimensional Hexagonal Piezoelectric Quasicrystal Actuator/Sensor with Different Configurations

Crystals
The presented article is about the axisymmetric deformation of an annular one-dimensional hexagonal piezoelectric quasicrystal actuator/sensor with different configurations, analyzed by the three-dimensional theory of piezoelectricity coupled with phonon
Yang Li, Yang Gao
doaj   +1 more source

Research on Loosening Identification of High-Strength Bolts Based on Relaxor Piezoelectric Sensor

Buildings
Bridges play a key and controlling role in transportation systems. Steel bridges are favored for their high strength, good seismic performance, and convenient construction.
Ruisheng Feng, Chao Wu, Youjia Zhang, Zijian Pan, Haiming Liu   +4 more
doaj   +1 more source

An Energy Supply System for Wireless Sensor Network Nodes

International Journal of Distributed Sensor Networks, 2012
The power source is a critical obstacle for wireless sensor network nodes. In order to prolong the lifetime of wireless sensor networks, this paper presents an energy supply system that uses a specially designed broadband piezoelectric energy harvesting ...
Guoqiang Zheng, Liwei Zhang, Jishun Li
doaj   +1 more source

Piezoelectric strain sensor with high sensitivity and high stretchability based on kirigami design cutting

npj Flexible Electronics, 2022
Wearable technology requires high-performance sensors with properties such as small size, flexibility, and wireless communication. Stretchability, sensitivity, and tunability are crucial sensor properties; stretchability and sensitivity ensure user ...
Young-Gyun Kim, Ji-Hyeon Song, Seongheon Hong, Sung-Hoon Ahn   +3 more
doaj   +1 more source

Impact Monitoring for Aircraft Smart Composite Skins Based on a Lightweight Sensor Network and Characteristic Digital Sequences

Sensors, 2018
Due to the growing use of composite materials in aircraft structures, Aircraft Smart Composite Skins (ASCSs) which have the capability of impact monitoring for large-scale composite structures need to be developed.
Lei Qiu, Xiaolei Deng, Shenfang Yuan, YongAn Huang, Yuanqiang Ren   +4 more
doaj   +1 more source

Highly sensitive and stretchable piezoelectric strain sensor enabled wearable devices for real-time monitoring of respiratory and heartbeat simultaneously

Nanotechnology and Precision Engineering, 2022
The World Health Organization has declared COVID-19 a pandemic. The demand for devices or systems to diagnose and track COVID-19 infections noninvasively not only in hospitals but also in home settings has led to increased interest in consumer-grade ...
Zhenjie Ji, Menglun Zhang
doaj   +1 more source

A Self-Powered Wearable Motion Sensor for Monitoring Volleyball Skill and Building Big Sports Data

Biosensors, 2022
A novel self-powered wearable motion sensor for monitoring the spiking gesture of volleyball athletes has been manufactured from piezoelectric PVDF film.
Weijie Liu, Zhihe Long, Guangyou Yang, Lili Xing   +3 more
doaj   +1 more source