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

Interference and Superposition of Waves01:07

Interference and Superposition of Waves

6.2K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
6.2K
Sound Waves: Interference00:53

Sound Waves: Interference

4.4K
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
4.4K
Interference and Diffraction02:18

Interference and Diffraction

51.1K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
51.1K
Interference: Path Lengths01:10

Interference: Path Lengths

1.8K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
1.8K
Doppler Effect - II01:05

Doppler Effect - II

4.2K
The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
4.2K
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

246
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
246

You might also read

Related Articles

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

Sort by
Same author

Analytical and numerical study of Friedrich-Wintgen bound states in the continuum in a compact acoustic cavity.

The Journal of the Acoustical Society of America·2026
Same author

Pump-probe localization technique of varying solid contacts.

The Journal of the Acoustical Society of America·2021
Same author

A micro-transducer matrix design for the detection of flexural guided waves.

Ultrasonics·2021
Same author

Localized Nanoresonator Mode in Plasmonic Microcavities.

Physical review letters·2020
Same author

An autonomous low-power management system for energy harvesting from a miniaturized spherical piezoelectric transducer.

The Review of scientific instruments·2019
Same author

Electrical Tuning of Nonlinearities in Exciton-Polariton Condensates.

Physical review letters·2018

Related Experiment Video

Updated: Dec 14, 2025

Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method
08:42

Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method

Published on: September 3, 2021

3.4K

Local damage detection by nonlinear coda wave interferometry combined with time reversal.

N Smagin1, A Trifonov1, O Bou Matar1

  • 1Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, LIA LICS/LEMAC, F-59000 Lille, France.

Ultrasonics
|July 24, 2020
PubMed
Summary

This study combines coda wave interferometry (CWI) with time-reversal (TR) to detect flaws. Pulsed TR focusing enhances nonlinear interactions, enabling sensitive defect detection in complex media.

Keywords:
Coda wave interferometryNondestructive testingPump–probe experimentTime reversal

More Related Videos

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

1.3K
Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

8.1K

Related Experiment Videos

Last Updated: Dec 14, 2025

Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method
08:42

Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method

Published on: September 3, 2021

3.4K
Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

1.3K
Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

8.1K

Area of Science:

  • Nonlinear acoustics
  • Ultrasonic testing
  • Materials science

Background:

  • Coda wave interferometry (CWI) is a sensitive ultrasound technique for detecting subtle changes in complex media.
  • Current CWI methods are primarily used for global inspection of structures like concrete.

Purpose of the Study:

  • To enhance CWI by integrating time-reversal (TR) techniques for localized flaw detection.
  • To investigate nonlinear pump-probe interactions for improved defect localization and characterization.

Main Methods:

  • A nonlinear modification of CWI using a high-frequency probe coda and a low-frequency pump wave.
  • Combining CWI with time-reversal (TR) to focus the pump wave onto specific areas.
  • Analyzing coda wave mixing in both continuous and pulsed pump modes, with a focus on pulsed TR.

Main Results:

  • Experimental observation of nonlinear interaction between pulsed pump and probe waves sufficient for defect detection using TR.
  • Demonstrated that TR focusing, even with a single transducer, provides sufficient contrast to differentiate intact and damaged zones.
  • Successful localization of flaws through nonlinear CWI enhanced by TR focusing.

Conclusions:

  • The integration of TR with nonlinear CWI offers a significant advancement for localized defect detection.
  • Pulsed TR is crucial for achieving the necessary spatio-temporal wave compression for effective pump focusing.
  • Nonlinear CWI combined with TR is a promising technique for sensitive and localized inspection of damaged zones in complex structures.