ABSTRACT
During the twentieth century, there has been an increasing interest in the friction
and wear characteristics of materials. The science of friction and wear of materials
has been named Tribology (the science of rubbing). A lot of research has been
conducted that resulted in significant progress in the understanding of the
fundamental principles of friction and wear of various materials. Several journals
are dedicated to the publication of original research in this subject, and many
reference books have been published where the research findings are presented.
The most important objective of the research in tribology is to reduce friction and
wear as well as other failure modes in bearings. On the other hand, there are many
important applications where it is desirable to maximize friction, such as in
brakes and in the friction between tires and road.
