Wear Particle Analysis


Normal spectrometric oil analysis (SOA) provides useful data about the wear rates and what metal elements (alloys) are involved.  Wear particle morphology can often add to this information.  The wear particle shape, aspect ratio, thickness, edge detail, surface texture and fracture details provide an indication of the type of wear mode occurring. The following wear processes produce particles with a specific morphology that can be identified and classified. 

Surface Fatigue.

Rubbing Wear.



Sliding and Cutting wear.



Analytical Ferrography is a technique for extracting wear particles from the oil and depositing them onto a thin glass microscope slide (Ferrogram) where they can be examined under a microscope. A Ferrogram can have particles varying from 0.1Ám to up to several hundreds of microns.

DR Ferrography is a technique where the wear particles can be extracted from an oil sample and the wear particle size distribution estimated.  From the size distribution the severity of wear index can be calculated.  DR Ferrography is often useful for monitoring gearboxes.

The Thumbnail gallery shown below illustrates some of the more interesting items associated with our wear debris analysis work. 

BRGSPAL2.jpg (32899 bytes)BRGSPALL.jpg (16746 bytes)BROKBALL.jpg (22712 bytes)cagewear Hollow.jpg (17534 bytes)FERRO.jpg (14695 bytes)ferrohig.gif (166725 bytes)ferrsn2.jpg (26776 bytes)fersn1.jpg (23705 bytes)rcfball.jpg (23458 bytes)rcfrolle.jpg (19503 bytes)scuffiin.jpg (23599 bytes)spall.jpg (14642 bytes)SPHERE2.jpg (7747 bytes)

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