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Related Concept Videos

Vibrating Concrete01:19

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Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
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Updated: Sep 29, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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Self-Powered Self-Contained Wireless Vibration Synchronous Sensor for Fault Detection.

Ghufran Aldawood1, Hamzeh Bardaweel1,2,3

  • 1Institute for Micromanufacturing, College of Engineering and Science, Louisiana Tech University, Ruston, LA 71272, USA.

Sensors (Basel, Switzerland)
|March 26, 2022
PubMed
Summary

This study presents a vibration-powered sensor system for fault detection, eliminating battery maintenance. The system uses harvested energy for RF transmission, enabling precise vibration analysis and early structural failure warnings.

Keywords:
IoT support technologyclean technologyself-powered sensorvibration energy harvestingvibration sensorwireless vibration sensor

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Area of Science:

  • Structural Health Monitoring
  • Energy Harvesting Technologies
  • Wireless Sensor Networks

Background:

  • Dynamic structure failures necessitate advanced fault detection.
  • Wireless Sensor Networks (WSN) offer monitoring solutions but face battery maintenance challenges and environmental concerns.
  • Battery replacement in WSNs incurs significant labor costs and ecological impact.

Purpose of the Study:

  • To introduce an integrated vibration-powered energy harvester sensor system for fault detection.
  • To develop a custom application for high-precision vibration analysis and structural fault identification.
  • To eliminate the need for battery maintenance in sensor nodes, reducing costs and environmental impact.

Main Methods:

  • A vibration-powered energy harvester integrated with a radio frequency (RF) transmitter and a vibration sensor subunit.
  • A harvester-sensor unit utilizing dual moving magnets and coil windings for simultaneous power and signal generation.
  • A custom fault detection application employing the Fast Fourier Transform (FFT) algorithm for vibration frequency analysis.

Main Results:

  • The system successfully powers an RF transmitter using harvested vibration energy.
  • The fault detection app achieves 1% error in detecting vibration frequencies.
  • The system operates at 0.7 g acceleration across a 5-10.6 Hz frequency range, with the transmitter consuming 0.894 µJ at 3 V.

Conclusions:

  • The developed vibration-powered sensor system offers a sustainable and cost-effective solution for fault detection in dynamic structures.
  • The integrated system enhances structural health monitoring by providing real-time, precise vibration analysis.
  • This approach mitigates environmental concerns associated with traditional battery-powered sensors.