Ultrasound tuned to improve oil performance 26 June 2013

Engineers at the University of Sheffield have developed a novel test to measure the performance of oils, such as WD-40.

The technique, developed by researchers from the University of Leonardo Centre for Tribology, uses ultrasound to examine the interfaces between components, such as the penetrating oils and the threads on bolts.

Professor Rob Dwyer-Joyce, head of the Leonardo Centre for Tribology at the University of Sheffield, explains taht pulses of ultrasound pass through the bolted joint and are reflected by the interface of the threads, while the remaining energy is transmitted into the oil.

Reflections help build a picture of how oils are working and, in turn, reveal how to improve the lubricant to speed up the process, he says.

Scientists from WD-40 are now working with the Sheffield researchers to develop new lubricant products, as extension opportunities under the WD-40 brand.

"We can now give an insight into the performance of penetrating oils such as WD-40," states professor Dwyer-Joyce.

"This means improvements can be made to yield products that penetrate faster and release rusted bolts more effectively," he continues.

"Ultrasound measurement can be used on anything lubricated, such as artificial hip joints, piston rings, seals and bearings," he adds.

Brian Tinham

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