October 28, 2019

In general we perform bump/impact test  to find natural frequency as rough test to prove if resonance problem exists. But however if we would like to see mode shape, several measurement points of transfer function/frequency response function between input force and vib...

November 26, 2018

High vibration was observed at pipes installed inside the furnace in a refinery and this results in a concern of fatigue failure. This can cause plant unplanned shutdown, hence, production lost. Customer would like to do fatigue failure assessment based on vibration da...

July 25, 2018

One of the reasons we invested in Iris M Motion Amplification (MA) camera is for piping including its associated structures and tower/stripper vibration measurement and analysis. Conventional vibration measurement might not be accessible or feasible in many cases due t...

June 2, 2018

An agitator installed in petrochemical plant is reported excessive vibration amplitudes measured at motor, gearbox and associated structures when operating speed is increased from 42 to 84 rpm due to process requirement. Motor running speed is about 1488 rpm (or around...

February 18, 2018

From our experience piping vibration problem is increasing demand for analysis and field troubleshooting which can be due to increasing productivity (power density, flow rate, etc.), reducing manufacturing cost (thin wall pipe is used), and/or dynamic behaviors are not...

January 29, 2018

We were requested to witness field balancing on a primary air fan being performed by third party. They were using handheld vibration data collector. Our engineer installed temporary vibration sensors at both drive end (DE) and non-drive end (NDE) bearings of the fan pl...

January 26, 2018

Cooling oil pipe of 700 MW transformer revealed excessive vibration amplitude measured at cooling oil pump at more than 200 microns, pp but acceptable level suggested from manufacturer is below 100 microns, pp. This can lead to pipe fatigue failure and crack, hence, un...

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