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Precision Ultrasonic Wave Measurements With Simple Equipment.

S E Fick1, C H Palmer2

  • 1National Institute of Standards and Technology, Gaithersburg, MD 20899-8221.

Journal of Research of the National Institute of Standards and Technology
|August 9, 2016
PubMed
Summary
This summary is machine-generated.

A new, affordable laser interferometer accurately measures ultrasonic surface displacement. Single waveform analysis provides calibration and uncertainty estimates for precise measurements.

Keywords:
displacementinexpensiveinterferometerprecisionultrasonic wave

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Area of Science:

  • Acoustics
  • Optical Metrology
  • Materials Science

Background:

  • Accurate measurement of ultrasonic surface displacement is crucial for material characterization and non-destructive testing.
  • Existing methods can be complex, expensive, or limited in their environmental applicability.

Purpose of the Study:

  • To design and construct a simple, cost-effective laser interferometer system.
  • To enable accurate measurement of ultrasonic surface displacement waveforms.
  • To develop a method for self-calibration and uncertainty estimation using single waveform analysis.

Main Methods:

  • Development of a novel laser interferometer system utilizing optical principles.
  • Implementation of signal processing techniques for waveform analysis.
  • Experimental validation using a conical-element ultrasonic transducer.

Main Results:

  • The laser interferometer system was successfully designed and constructed.
  • The system demonstrated accurate measurement of ultrasonic surface displacement waveforms.
  • Single waveform analysis effectively provided calibration constants and uncertainty estimates.

Conclusions:

  • The developed laser interferometer offers a simple, inexpensive, and accurate solution for measuring ultrasonic surface displacement.
  • The self-calibration method enhances the reliability and applicability of the system for absolute measurements.
  • This technology has potential applications in various fields requiring precise ultrasonic analysis.