Experimental Modal Measurement and Analysis Seminar - Seattle, Washington (October 8-9, 2019)

Crystal Instruments is excited to offer an upcoming Modal Measurement Seminar in Seattle, WA with lead instructor Dr. Pete Avitabile. From October 8-9, 2019, attendees of our special modal seminar will receive the use of a complete lab kit for the entire duration of the training seminar. Each lab kit includes a Spider-20 wireless analyzer, laptop, and modal hammer.

Agenda for October 8, 2019:

  • 8:15 - 9:50: Overview of Experimental Modal Analysis and Measurements Required

  • 10:00 -10:30: Impact Basics - Hammer, Tips, Force, Accelerometers

  • 10:30 -11:00: Shaker Basics - Shaker, Amplifier, Force, Impedance

  • 11:00 -11:50: Perform a basic experimental modal test - overview the process: make measurements

  • (Lunch break)

  • 1:00 - 2:00: Modal Primer - A Brief Overview of the Process

  • 2:00 - 2:50: Hammer - Tips; Force/Exponential Window; Coherence - example measurements

  • 3:00 - 3:50: Hammer - Double Impact; Over/Underload/Saturation - example measurements

  • 4:00 - 5:00: Hammer - Multiple Impacts; Roving/Stationary Hammer - example measurements

Agenda for October 9, 2019:

  • 8:15 - 9:50: Shaker Excitation Signals for modal testing - example measurements (random, burst random, pseudo-random, chirp, digital stepped sine)

  • 10:00 -11:00: MIMO-FRF, Multiple Coherence - example measurements (or previous data) (Shaker independence/PCA, shaker anomalies, number of shakers)

  • 11:00 -12:00: Measurement Inconsistencies from Poor Testing - Implications for Modal Test

  • (Lunch break)

  • 1:00 - 2:00: Impact Testing - Additional Items for consideration Frequency Range - Multi-bands; Skewed Inputs, ICP Low Frequency;

  • 2:00 - 3:00: Shaker Testing - Additional Items for Consideration Stinger types, stinger effects, impedance heads, general shaker set up SLSO/MIIVIO, mass loading, effect on modal analysis (stability, modes extracted)

  • 3:00 - 4:30: Closing Remarks - Q&A

Attendees are also invited to an optional dinner with Crystal Instruments. Please register here to join us for the seminar.

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