Tribological measurements benefit directly from in-situ techniques which shed light on deformation processes occurring at the sliding interface. In addition to enabling direct observation of wear evolution, in-situ tribology can also be used for studies of friction, tribochemical reactions, interfacial adhesion, abrasion resistance, and nanoparticle rolling.
Applications of in-situ tribology testing can include quantifying (among others):
Despite being applicable across a wide range of sample types and industries, until recently, in-situ nanoscale mechanical testing has been limited to the application of purely normal forces. That is, quantitative nanoindentation, compression, bending, and tensile loading coupled with direct SEM observation are accomplished by varying the tip and sample geometry. Often, however, testing in more than one dimension is required to fully understand the performance of a material system, especially when dealing with the tribological properties of a material.
In support of engineers' and researchers' growing need for increased multi-directional functionality, the nanoTribology module for Bruker's Hysitron PI 95 TEM PicoIndenter and Hysitron PI 89 SEM PicoIndenter instruments enables high-resolution measurements with simultaneous normal and lateral force/displacement sensing.
Sanjit Bhowmick, Ph.D.
Senior Staff Scientist, Bruker
Min Zou, Ph.D., Professor, Mechanical Engineering, University of Arkansas
Tevis Jacobs, Ph.D., Professor, Swanson School of Engineering, University of Pittsburgh