Definition
Ultrasound inspection detects high-frequency sound (beyond the range of human hearing) produced by specific physical phenomena such as air or gas leaks, bearing friction with inadequate lubrication, or electrical partial discharge, converting that ultrasonic signal into an audible or visual output a technician can interpret.
Key facts
- Detects sound frequencies above the audible range, converted to a range humans can hear or visualize.
- Common applications include compressed-air leak detection, early-stage bearing friction, and electrical partial-discharge detection.
- Often effective at detecting a developing problem earlier than vibration analysis for certain fault types, since friction-generated ultrasound can appear before amplitude changes are detectable.
- Requires directional pointing at a suspected source, unlike some broader-area sensing techniques.
How does Ultrasound inspection work in maintenance?
Ultrasound inspection detects high-frequency sound generated by specific physical events (turbulent flow through a leak, friction from inadequate lubrication at a bearing, or electrical discharge) that occur above the range of human hearing, converting the signal into an audible tone or visual reading a technician can interpret and locate.
What does Ultrasound inspection require?
Common applications include finding compressed-air or gas leaks that would otherwise go unnoticed, detecting early bearing friction before it develops into a more advanced vibration-detectable fault, and identifying electrical partial discharge in switchgear or connections before it progresses toward failure.
FAQ
Frequently asked questions
What condition information does an ultrasound inspection provide?
It provides information about specific phenomena (leaks, bearing friction, electrical discharge) by detecting the high-frequency sound they produce, inaudible to the human ear, and converting it to an interpretable signal.
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