Vibration Analysis

“Vibration analysis” is the (generic) study of the oscillatory motion (vibration pattern) of objects. It involves analysis of the object surface displacement, with respect to time, using either full-field data and/or discrete points (or markers). The specific methods used for “vibration analysis” include;

• Operational Modal Analysis (OMA), whereby the object is loaded in its natural operational environment, for the determination of natural frequencies and mode shapes
• Experimental Modal Analysis (EMA), whereby the object is loaded in from external (measured) force inputs, for the determination of the natural frequencies from a Frequency Response Function (FRF) measurement
• Operational Deflection Shapes (OSD), whereby the object is loaded at some operational frequency, not the object’s natural frequency.