Application Notes

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Data Acquisition

• Impact Testing using the Acquisition Window
• Simulated Multiple Shaker Burst Random Modal Test

Operating Deflection Shapes

• Calculating ODS FRFs From Bridge Impact Data
• Order Tracked ODS's using VSI Rotate and ME'scopeVES

Modal Analysis

• Building and Analyzing a Mass-Spring-Damper System
• Curve Fitting Introduction
• Introduction to Modal Curve Fitting
• Multiple Reference Curve Fitting To Find Closely Coupled Modes
• Multiple Reference Curve Fitting To Find Repeated Roots
• Single Reference and Multiple Reference Curve Fitting
• Simulated Multiple Shaker Burst Random Modal Test
• Taking Impact Data using a Triaxial Accelerometer
• Using the Z-Polynomial Method with the Stability Diagram
• Choosing Reference DOFS for a Modal Test
• Choosing Response DOFs for a Modal Test

Structural Modifications

• Calculating the Modes of a Beam
• Mathematics of a Mass-Spring-Damper System
• Modeling a Rib Stiffener with Structural Modifications
• Modeling a Single Degree-of-Freedom Mass-Spring-Damper System
• Using a Tuned Absorber to Suppress Vibration
• Using Structural Modifications for Sub Structuring

Signal Processing

• Averaging Data
• Power Measurements
• The FFT, Windowing and Leakage
• Waveform Integration/Differentiation
• Integration and Differentiation of FRFs
• Calculating a 4-Pole Transfer Function Matrix

Advanced Signal Processing

• Calculating MIMO FRFs
• Calculating MIMO Responses
• Calculating Sinusoidal Responses
• Calculating MIMO Forces