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Ultrasonic Continuous-Wave Beam-Power Measurements; International Intercomparison
Carl E Tschiegg1, Martin Greenspan1, Donald G Eitzen1
1National Bureau of Standards, Washington, DC 20234.
Journal of Research of the National Bureau of Standards (1977)
|September 27, 2021
Summary
Stable quartz transducers for ultrasonic power measurement were evaluated in an international study. Results show these devices can serve as reliable standards for continuous-wave power, aiding global research consistency.
Area of Science:
- Materials Science
- Acoustics
- Metrology
Background:
- Quartz transducers are crucial for generating ultrasonic power.
- The need for stable and linear ultrasonic power transmitters as standards is recognized.
Purpose of the Study:
- To assess the suitability of quartz transducers as standards for ultrasonic power measurement.
- To conduct an international intercomparison of continuous-wave (cw) power measurements using these standards.
Main Methods:
- Seven international laboratories participated in the study.
- Each lab performed measurements using their standard practices.
- National Bureau of Standards served as the pilot laboratory for data collection.
Main Results:
- Results from the intercomparison were compiled and presented.
- Data indicates the potential of quartz transducers as reliable ultrasonic power standards.
- Observations on the stability of the transducers were also noted.
Conclusions:
- The intercomparison validates the use of specific quartz transducers as standards for ultrasonic power.
- Consistent measurement results across laboratories support their reliability.
- Further stability analysis provides additional confidence in their application.
