Transducer inertia and stinger stiffness effects on FRF measurements

K. G. McConnell, P. Cappa

Research output: Contribution to journalArticle

Abstract

Test techniques were evaluated to determine the best test to study methods for measuring the complete driving point frequency response function characteristics of forces and moments. It was found that impulse testing has consistency problems with input magnitudes and gives poor damping estimates. Chirp testing has excellent signal-to-noise ratios and the best coherence, but in the test case it exhibited a shift in the third natural frequency. Stinger testing showed measurement complications for the test structure's highest natural frequency. It is concluded that a better test method is required to achieve the quality of data required.

Original languageEnglish
Pages (from-to)57
Number of pages1
JournalShock and Vibration Digest
Volume32
Issue number1
Publication statusPublished - Jan 2000

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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