Overcoming VFD CM Challenges with Ultrasound

Ultrasound testing is a powerful solution for assessing the condition of our assets. The technology hears defects in the ultrasonic range and transfers these inaudible faults to low frequency sounds we can hear. Ultrasound signals from failing assets are measured, trended, and analyzed so we can execute an action plan that minimizes the impact.  

Reliable plants need FIT assets.  

Most defects that threaten uptime produce Friction, Impacting, and Turbulence (FIT). These conditions exist silently in the ultrasound region. Find one – or any combination – of these and you now have data to monitor the asset condition at an advanced level.  

Why is Ultrasound Useful? 

Ultrasound Owns the Apex of the P-F Curve. Newly formed defects present themselves ultrasonically first, and only become audible once they’ve advanced closer to the moment of failure. Ultrasound testing is considered one of the earliest indicators that an asset will soon be in need of attention.  

Ultrasound instruments are particularly effective in high noise situations. Inspections can be carried out any time of day, regardless of background noise.  

Ultrasound is introverted. It prefers to remain isolated to its source. This unique characteristic makes ultrasound extremely effective for distinguishing specific anomalies occurring in close proximity to each other; like finding that one needle, in a haystack full of needles.  


Ultrasound’s versatility is unlike any other condition monitoring technology. SDT identified eight application pillars and within each pillar there are virtually hundreds of ways to increase safety, eliminate unplanned downtime, and reduce energy waste. Ultrasound is the first line of defense for industries seeking higher profits and a sustainable future.  

Overcoming VFD CM Challenges with Ultrasound

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