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Experimental Modal Analysis (EMA, OMA, ODS)

Experimental Modal Analysis (EMA) is an effective instrument for describing, understanding and modelling the dynamic behaviour of a structure.
It can be carried out to determine the natural frequencies and mode shapes of a structure and to verify accuracy and calibrate a finite element model (FE).

Moreover, Experimental Modal Analysis, can be used in order to make a troubleshooting vibration problem.

An example of the analysis techniques that SINT Technology can use are:

  • Impulse excitation (instrumented hammer)
  • Controlled excitation (shaker)
  • Operational Modal Analysis (OMA)
  • Operational Deflection Shape (ODS)

How to describe the dynamic behaviour of a structure and measure modal data

SINT Technology can determine the main modal parameters:

  • Natural frequencies
  • Mode shapes
  • Damping

The validation of the modes was done using the following:

  • Modal Assurance Criterion (MAC)
  • Complexity tools
  • Modal Phase Collinearity (MPC)
  • Mean Phase Deviation (MPD)
  • Phase scatter
Brochure
Hammer test plant industrial

How to validate modal data

experimental modal anaylysis flow

Thanks to the best specialized software, SINT can carry out the PRE-TEST analysis (in order to choose the best set-up measurement) and the CORRELATION analysis (for the comparison of the Finite element model with the experimental model).

Experimental Modal Analysis: Data Acquisition Systems

SINT Technology uses multichannel data acquisition system up to 100 channels

  • SIEMENS LMS SCADAS SR02
  • SIEMENS LMS SCADAS SR05
  • SIEMENS LMS SCADAS SR09

NOTE: Available also for the installation for hazardous area

For more information you can visit www.experimentalmodalanalysis.com

  • Modal Analysis
  • Modal Analysis
  • Modal Analysis hammer

Mechanical Testing

  • Condition monitoring & diagnostics
  • Vibration measurement and analysis
  • Measurement and analysis of torque and torsional vibrations
  • Experimental Modal Analysis (EMA, OMA, ODS)
  • Reciprocating compressor diagnostics
  • Strain gauge measurements
  • Noise and Sound intensity measurements
© Copyright - SINT Technology s.r.l. | VAT n. IT04185870484 | Via delle Calandre, 63 50041 - Calenzano (FI) - ITALY | Tel: +39 055 8826302 | E-mail: info@sintechnology.com
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