We've all heard of ultrasound being used at the doctor's office, but can you use it to monitor and troublshoot your plant floor equipment?
The answer is a resounding Yes. In fact, no predictive maintenance program should be without ultrasonic capabilities.
How Does Ultrasound Testing Work?
The term ultrasound describes sound waves that are high frequency and beyond the range of human hearing. Ultrasound equipment detects sounds within these ranges and allows you to tune out other sounds that you aren't interested in. Because sound is directional, ultrasound also allows you to pinpoint where the sound is coming from.
As you get closer to the source of a particular sound, the intensity (measured in dB) increases. The output can be a plot showing how the intensity of sound varies over different frequencies. Ultrasound testing equipment can also modify the sound so that it is something you can learn to recognize through a pair of headphones. For example, an open valve has a rushing sound.