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 Experiment Videos

Implementing guided wave mode control by use of a phased transducer array.

J Li1, J L Rose

  • 1Pennsylvania State University, Department of Engineering Science and Mechanics, University Park, PA 16802, USA.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|May 31, 2001
PubMed
Summary

A new multi-channel time-delay system enhances guided wave mode control in transducer arrays. This system significantly improves signal-to-noise ratio for better inspection capabilities.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Characterizing the relationship between gonadotropin releasing hormone (GnRH), kisspeptin, and RFamide related peptide 3 (RFRP-3) neurons in the equine hypothalamus across the estrous cycle and in the anovulatory seasons.

Theriogenology·2024
Same author

Sex differences in the expression of estrogen receptor alpha within noradrenergic neurons in the sheep brain stem.

Domestic animal endocrinology·2014
Same author

Mode perturbation method for optimal guided wave mode and frequency selection.

Ultrasonics·2014
Same author

Lamb wave generation and reception with time-delay periodic linear arrays: a BEM simulation and experimental study.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008
Same author

Guided wave nuances for ultrasonic nondestructive evaluation.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008
Same author

Mirizzi syndrome: A rare cause of obstructive jaundice.

Digestive diseases (Basel, Switzerland)·1999

Area of Science:

  • Non-destructive testing
  • Ultrasonic guided waves
  • Transducer array signal processing

Background:

  • Guided wave testing is crucial for structural health monitoring.
  • Controlling wave modes is essential for accurate defect detection.
  • Existing methods often lack precise control over wave generation.

Purpose of the Study:

  • To develop and evaluate a multi-channel time-delay system for guided wave mode control.
  • To investigate the impact of time delays on transducer array performance.
  • To introduce an automatic algorithm for guided wave mode selection.

Main Methods:

  • Implementation of an eight-channel time-delay system with adjustable delays (0-30 microseconds).
  • Utilizing dispersion curves and element spacing for time-delay value determination.

Related Experiment Videos

  • Development of a non-knowledge-based automatic time-delay searching algorithm.
  • Experimental validation using a phased comb transducer array on a carbon steel pipe.

    • Main Results:

    • Demonstrated significant improvement in signal-to-noise ratio (SNR).
    • Achieved controllable tone-burst signals with high energy output.
    • Verified the effectiveness of the automatic time-delay searching algorithm for mode selection.
    • Observed benefits of unidirection generation and mode control flexibility.

    Conclusions:

    • The multi-channel time-delay system effectively enhances guided wave mode control.
    • The system offers substantial improvements in SNR and inspection sensitivity.
    • The developed algorithm provides an efficient method for guided wave mode selection.