Slippery but tough - the rapid fracture of lubricated frictional interfaces (INVITED)

Abstract eng:
We study the onset of friction for contacting blocks whose rough, spatially extended interface is coated with a thin lubrication layer. High speed measurements of the real contact area and stress fields adjacent to the interface reveal that propagating shear cracks mediate lubricated frictional motion. While lubricants reduce interface strengths, surprisingly, they significantly increase the fracture energy (amount of dissipated energy) during rupture. Moreover, lubricant viscosity affects the onset of friction but has no effect on the fracture energy. These results suggest a new view of lubricated friction.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket