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Spot Weld Analysis With 2D Ultrasonic Arrays.

A A Denisov1, C M Shakarji2, B B Lawford2

  • 1University of Windsor, Windsor, Ontario N9B 3P4.

Journal of Research of the National Institute of Standards and Technology
|July 2, 2016
PubMed
Summary

This study validates an array-based ultrasonic tool for nondestructive testing of spot welds using calibrated samples, real welds, and NIST-verified software. The results confirm the tool

Keywords:
least-squaresnondestructive analysisspot weldtransducertwo-dimensionalultrasonic

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Non-Destructive Testing

Background:

  • Spot welds are critical in manufacturing, requiring reliable non-destructive testing (NDT) methods.
  • Existing NDT techniques for spot welds may have limitations in accuracy or efficiency.
  • Array-based ultrasonic testing offers potential advantages for spot weld inspection.

Purpose of the Study:

  • To introduce and evaluate a novel array-based ultrasonic tool for spot weld NDT.
  • To present a comprehensive threefold performance testing methodology for this ultrasonic tool.
  • To demonstrate the tool's capabilities and advantages compared to conventional methods.

Main Methods:

  • Developed a threefold performance testing protocol for the ultrasonic tool.
  • Utilized calibrated samples with known properties for initial validation.
  • Conducted comparative analyses using actual spot welds and reference fits from the National Institute of Standards and Technology (NIST).

Main Results:

  • The array-based ultrasonic tool demonstrated effective performance in evaluating spot welds.
  • Testing with calibrated samples provided baseline data for tool accuracy.
  • Comparison with actual spot welds and NIST reference fits validated the tool's reliability and the embedded software's precision.

Conclusions:

  • The presented threefold testing method provides a robust framework for assessing array-based ultrasonic tools for spot weld NDT.
  • The evaluated tool shows promise as an effective and reliable solution for industrial applications.
  • Further validation and application of this NDT technology are recommended for quality control in manufacturing.