Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Magnetic Damping

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Development and characterization of monoclonal antibodies to spring viraemia of carp virus.

Veterinary immunology and immunopathology·2008

Same author

Electrophysiological characterization of a novel Kv channel blocker N,N'-[oxybis(2,1-ethanediyloxy-2,1-ethanediyl) ]bis(4-methyl)-benzenesulfonamide found in virtual screening.

Acta pharmacologica Sinica·2008

Same author

Cloning and characterization of an rRNA methyltransferase from Sorangium cellulosum.

Biochemical and biophysical research communications·2008

Same author

Reconstruction of anophthalmic orbits and contracted eye sockets with microvascular radial forearm free flaps.

Ophthalmic plastic and reconstructive surgery·2008

Same author

Using low intensity ultrasound to improve the efficiency of biological phosphorus removal.

Ultrasonics sonochemistry·2008

Same author

[Study on the spectrum of the flocculent conformation of polymer ferric sulfate flocculants].

Guang pu xue yu guang pu fen xi = Guang pu·2008

Search research articles

Related Experiment Video

Updated: Apr 15, 2026

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

In Situ Damage Detection Method for Metallic Shear Plate Dampers Based on the Active Sensing Method and Machine

Yunfei Li¹, Feng Xiong¹, Hong Liu²

¹College of Architecture and Environment, Sichuan University, Chengdu 610065, China.

Sensors (Basel, Switzerland)

|April 14, 2026

Summary

This summary is machine-generated.

This study introduces a new method for detecting damage in Metallic Shear Plate Dampers (MSPDs) using active sensing and the k-nearest neighbor (KNN) algorithm. The developed technique offers high accuracy and efficiency for critical infrastructure safety.

Keywords:

active sensing k-nearest neighbor (KNN)machine learning metallic shear plate dampers stress wave analysis structural health monitoring wavelet packet transform

More Related Videos

Data Acquisition Protocol for Determining Embedded Sensitivity Functions

Data Acquisition Protocol for Determining Embedded Sensitivity Functions

Published on: April 20, 2016

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

Published on: August 3, 2018

Related Experiment Videos

Last Updated: Apr 15, 2026

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

Data Acquisition Protocol for Determining Embedded Sensitivity Functions

Data Acquisition Protocol for Determining Embedded Sensitivity Functions

Published on: April 20, 2016

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

Published on: August 3, 2018

Area of Science:

Structural Engineering
Materials Science
Signal Processing

Background:

Metallic Shear Plate Dampers (MSPDs) are crucial for passive vibration control.
Current visual inspection methods for MSPDs are inefficient and cannot detect hidden damage.
Rapid post-earthquake assessment of MSPDs is vital for structural integrity.

Purpose of the Study:

To develop a novel, accurate, and efficient method for detecting damage in MSPDs.
To utilize active sensing and machine learning for automated damage assessment.
To overcome the limitations of traditional visual inspection techniques.

Main Methods:

Simulated various damage states in MSPDs through quasi-static tests.
Applied sweep-frequency excitation and used piezoelectric sensors to capture stress wave signals.
Processed signals using Wavelet Packet Transform (WPT) and energy spectrum analysis for feature extraction.
Trained and validated a k-nearest neighbor (KNN) algorithm with extracted time-frequency features.

Main Results:

The KNN model achieved a high validation accuracy of 98.9% with all data and 98.1% with a single channel.
The method demonstrated robustness, achieving 92.6% accuracy on a structurally varied MSPD.
The active sensing approach effectively identified different damage conditions in MSPDs.

Conclusions:

The proposed active sensing and KNN-based method provides a highly accurate and efficient solution for MSPD damage detection.
The technique shows significant practical potential for real-world post-earthquake inspections.
The method's robustness suggests applicability to MSPDs with minor structural variations.