Which is NOT considered when analyzing wear particles in oil samples?

When analyzing wear particles in oil samples, the focus is primarily on the nature and origin of the particles themselves, as this information can provide insights into the wear processes occurring within equipment. The presence of wear particles from auxiliary components offers valuable information regarding the overall health and functioning of the machinery. Understanding normal rubbing wear is essential for distinguishing typical wear patterns from abnormal or excessive wear, which can indicate underlying issues.

Nonmetallic materials, such as those originating from seals or gaskets, can also play a significant role in wear particle analysis, as they can affect the performance and reliability of the lubrication system.

On the other hand, lubrication properties, while critical to the overall functioning and longevity of machinery, do not directly relate to the analysis of wear particles themselves. Lubrication properties are more about how well a lubricant performs in reducing friction and wear, which can indirectly influence wear particle generation but are not part of the analysis of the wear particles already present in the oil samples. Therefore, lubrication properties are not considered in the direct analysis of wear particles in oil samples, making this the outlier in the context of wear particle analysis.