Experimental Modal Measurement and Analysis Seminar

Crystal Instruments will be hosting an “Experimental Modal Measurement and Analysis Seminar” from February 26 - 27, 2019, at the Biltmore Hotel in Santa Clara, CA. All are invited to attend. Registration cost is $199, click here to register.


Modal analysis is an essential technology behind solving today’s noise and vibration problems. Dr. Peter Avitabile, Professor Emeritus at University of Massachusetts Lowell, will discuss taking measurements – along with the pitfalls, difficulties, and common misconceptions related to modal testing. This seminar will focus on the practical aspects of impact and shaker measurements, the most common methods used to acquire data for experimental modal analysis.

Who Should Attend
Engineers and technicians who currently practice or need to learn how to make proper measurements for experimental modal tests.

The cost of the training is $199.  This fee covers course, training materials, and meals.

If you would like to register multiple people with one credit card or if you need an invoice or have questions, please contact Darren Fraser at dfraser@go-ci.com. Thank you for your interest.

February 26, 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
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

February 27, 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
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