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Surface roughness evaluation via ultrasonic scanning.

S J Oh1, Y C Shin, E S Furgason

  • 1Dept. of Mech. Eng. and Electr. Eng., Purdue Univ., West Lafayette, IN.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|January 1, 1994
PubMed
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This study evaluates surface roughness measurement using focused ultrasonic beams. The ultrasonic system shows excellent correlation with profilometer measurements, demonstrating its potential for accurate surface analysis.

Area of Science:

  • Materials Science
  • Acoustics
  • Nondestructive Testing

Background:

  • Surface roughness significantly impacts material properties and performance.
  • Scattering of focused ultrasonic waves by surface roughness is not well understood.
  • Accurate surface roughness measurement is crucial for quality control.

Purpose of the Study:

  • To analytically and experimentally evaluate surface roughness measurement using focused ultrasonic beams.
  • To investigate the scattering characteristics of focused ultrasonic waves due to surface roughness.
  • To demonstrate the potential of ultrasonic sensing for surface roughness measurement.

Main Methods:

  • Impulse response method with a sine-modulated Gaussian pulse.
  • Numerical and experimental analysis of focused ultrasonic beam profiles.

Related Experiment Videos

  • Analytical generation and experimental validation of reflected waveforms from various surfaces.

    • Main Results:

    • Good agreement between analytical and experimental results for ultrasonic wave reflection.
    • Successful analysis of ultrasonic wave reflection from cusped surfaces.
    • Excellent correlation between ultrasonic measurements and profilometer data.

    Conclusions:

    • Focused ultrasonic beams can be effectively used for surface roughness measurement.
    • The proposed ultrasonic sensing system shows high potential for accurate surface analysis.
    • This method offers a promising alternative for nondestructive evaluation of surface topography.