This project represents a straight continuation of the research activities of the LTI and
which helped to simulate and understand the electrical response of multi-contact systems.
In order to make further progress in the electrical modeling, the electrical transfer
model is applied to the case of bearing operation. The 2D modeling by discrete elements
reproduces the dynamic bearing. The method proposes to take measurements of electrical
resistance on bearings to detect defects. This is an original method that stems from work
published in MSSP. Indeed, while many studies have been conducted on monitoring bearing
defects by analyzing vibration signals, the use of localized electrical measurements on
bearings is a promising approach, not yet exploited. The introduction of the first
defects, as a local breaking of mechanical contact causes periodic disturbances in the
calculation of the electrical resistance. One of our objectives is to characterize the
defects position and the size of the defects, by analyzing disturbances in the electrical
measurement.