Applied Sciences (Nov 2021)

The Sonic Resonance Method and the Impulse Excitation Technique: A Comparison Study

  • Tomáš Húlan,
  • Filip Obert,
  • Ján Ondruška,
  • Igor Štubňa,
  • Anton Trník

DOI
https://doi.org/10.3390/app112210802
Journal volume & issue
Vol. 11, no. 22
p. 10802

Abstract

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In this study, resonant frequencies of flexurally vibrating samples were measured using the sonic resonant method (SRM) and the impulse excitation technique (IET) to assess the equivalency of these two methods. Samples were made from different materials and with two shapes (prism with rectangular cross-section and cylinder with circular cross-section). The mean values and standard deviations of the resonant frequencies were compared using the t-test and the F-test. The tests showed an equivalency of both methods in measuring resonant frequency. The differences between the values measured using SRM and IET were not significant. Graphically, the relationship between the resonant frequencies is a line with a slope of 0.9993 ≈ 1.

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