Experimental Modal Analysis (EMA)
Fast and Accurate Evaluations
Our unique approach to pump and pumping system modal analysis promises the fastest and most accurate evaluation available today of pump structural, rotordynamic, natural frequency and resonance related problems.
EMA is also used to help validate many of our design software systems and is almost always used when preforming major pump or systems revamps.
On pumps, because of forces such as Lomakin effect, fluid mass and damping, wear ring induced stiffness and damping as well as bearing induced stiffness and damping, it is critical to gather the Modal data while the equipment is running. However, older conventional methods of gathering Modal data are not efficient in acquiring running data, especially on noisy machinery.
To solve this problem, Zoellner Technical Services has developed several advanced proprietary data gathering techniques that allow us to gather accurate, meaningful data on equipment that is online and running.