Ultrasonic Testing Services can be used in any industry. Typical applications include:
Ultrasound leak detection covers a wide range of leaks: pressure or vacuum and any gas.
One of the more popular applications for ultrasound is compressed air leak surveys. Technicians are able to analyze and report on cost reduction due to wasted energy.
A major advantage to ultrasound leak inspection is that as a high frequency, short wave signal, ultrasound emissions tend to be localized around the leak site. By scanning an area with an ultrasound instrument, a Technician will follow the sound of the leak to the loudest point. Once identified, the leak amplitude can be noted and recorded for reporting a cost analysis and environmental impact.
How Ultrasonic Leak Detection Works.
During a leak, a fluid (liquid or gas) moves from a high pressure to a low pressure. As it passes through the leak site, a turbulent flow is generated. This turbulence has strong ultrasonic components which are heard through headphones and seen as intensity increments or decibels on the instrument’s display panel. It can be generally noted that the larger the leak, the greater the ultrasound level.
Ultrasonic inspection of mechanical equipment has many advantages. It provides early warning of bearing failure, detects lack of lubrication, prevents over lubrication and can be used on all bearing speeds (high, medium and low). In addition, since ultrasound is a high frequency, short wave signal, it is possible to filter out stray, confusing background noises and focus on the specific test point.
Ultrasonic Mechanical Inspection can be used to monitor bearing faults (all speeds), lack of lubrication, prevent over lubrication, compressors, pumps (cavitation), motors, gears/gear boxes, hydraulic systems, fans, couplings, and many others.
Ultrasonic condition analysis is straightforward. The technician can observe sound levels while simultaneously listening to the sound quality, perform data logging, data analysis, trending, trend reports, and spectral analysis through specialized software.
How Ultrasound Bearing and Mechanical Inspection Works
Mechanical movements produce a wide spectrum of sound. One of the major contributors to excessive stress in machinery is friction. Ultrasound instruments detect friction. By focusing on a narrow band of high frequencies, the instrument detects subtle changes in amplitude and sound quality produced by operating equipment. It then heterodynes these normally undetectable sounds down into the audible range where they are heard through headphones and observed on a display panel for trending, comparison, and analysis.
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