Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Vibrating Concrete01:19

Vibrating Concrete

254
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...
254
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.3K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.3K
Modes of Standing Waves - I01:03

Modes of Standing Waves - I

3.5K
A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
3.5K
Discrete Fourier Transform01:15

Discrete Fourier Transform

622
The Discrete Fourier Transform (DFT) is a fundamental tool in signal processing, extending the discrete-time Fourier transform by evaluating discrete signals at uniformly spaced frequency intervals. This transformation converts a finite sequence of time-domain samples into frequency components, each representing complex sinusoids ordered by frequency. The DFT translates these sequences into the frequency domain, effectively indicating the magnitude and phase of each frequency component present...
622
Forced Oscillations01:06

Forced Oscillations

7.3K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
7.3K
Damped Oscillations01:07

Damped Oscillations

6.5K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
6.5K

You might also read

Related Articles

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

Sort by
Same author

The Influence of Accreditation on the Sustainability of Organizations with the Brazilian Accreditation Methodology.

Journal of healthcare engineering·2018
Same author

Experimental Design and Data collection of a finishing end milling operation of AISI 1045 steel.

Data in brief·2016
See all related articles

Related Experiment Video

Updated: Nov 27, 2025

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

9.0K

Vibrations in CDFW.

Daniel Soares de Alcantara1, Pedro Paulo Balestrassi1, José Henrique Freitas Gomes1

  • 1Institute of industrial Engineering, Federal University of Itajubá (UNIFEI), Itajubá 37500-903, Brazil.

Entropy (Basel, Switzerland)
|December 8, 2020
PubMed
Summary
This summary is machine-generated.

Vibration signals during continuous drive friction welding reveal process dynamics. Analyzing these signals, especially low-frequency ones, helps identify the impact of manipulated variables on weld quality.

Keywords:
crest factorempirical mode decompositionfrictionkurtosismean square rootpeakwelding

More Related Videos

Calcium Imaging in Freely Behaving Caenorhabditis elegans with Well-Controlled, Nonlocalized Vibration
06:50

Calcium Imaging in Freely Behaving Caenorhabditis elegans with Well-Controlled, Nonlocalized Vibration

Published on: April 29, 2021

3.0K
Whole Body Vibration Methods with Survivors of Polio
04:16

Whole Body Vibration Methods with Survivors of Polio

Published on: October 17, 2018

9.0K

Related Experiment Videos

Last Updated: Nov 27, 2025

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

9.0K
Calcium Imaging in Freely Behaving Caenorhabditis elegans with Well-Controlled, Nonlocalized Vibration
06:50

Calcium Imaging in Freely Behaving Caenorhabditis elegans with Well-Controlled, Nonlocalized Vibration

Published on: April 29, 2021

3.0K
Whole Body Vibration Methods with Survivors of Polio
04:16

Whole Body Vibration Methods with Survivors of Polio

Published on: October 17, 2018

9.0K

Area of Science:

  • Materials Science and Engineering
  • Manufacturing Processes
  • Mechanical Engineering

Background:

  • Continuous drive friction welding (CDFW) is an efficient solid-state joining technique.
  • Material viscosity changes during welding affect friction and vibration dynamics.
  • Vibration signal analysis offers insights into the complex CDFW process.

Purpose of the Study:

  • To investigate the influence of manipulated variables on vibration signals during CDFW.
  • To correlate time-domain and frequency-domain features of vibration signals with process parameters.
  • To establish a method for monitoring and controlling CDFW using vibration analysis.

Main Methods:

  • Vibration signals were measured on the stationary component during friction and forging stages.
  • Time-domain statistical features (RMS, peak, crest factor, kurtosis) were calculated.
  • Empirical Mode Decomposition (EMD) was employed for frequency-domain analysis.

Main Results:

  • Manipulated variables significantly influence the statistical characteristics of vibration signals.
  • Low-frequency signal components are most affected by changes in manipulated variables.
  • Distinct vibration patterns correlate with specific process conditions.

Conclusions:

  • Vibration monitoring is a viable method for assessing CDFW process stability and quality.
  • Analysis of low-frequency vibrations provides key information about process parameter effects.
  • This approach enables better control and optimization of the continuous drive friction welding process.