Bias - Modal Test Services
We can determine resonance frequencies and natural frequency shapes with modal testing. Modal test is also useful for finite element model correlation studies.
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Modal Test by Using Impulse Hammer
Impulse hammer provides fast results for modal test. Although structures sometimes cannot excited enough, so results cannot reach higher resolution, it is very satisfactory in some situations.
Modal test by using modal shakers
Modal shakers are much more difficult to apply compared to impulse hammer, it provides high resolution data.
Natural modes frequencies, mode shapes and damping
Natural mode frequencies and mode shapes can be determined from modal test results. Damping characteristics are also calculated.
FE Model Correlation and Model Updating
Finite element models can be updated to get closer results to experimental modal analysis measurements.
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