|
|
|
|
Tribology
is the
science and technology of interacting surfaces in relative motion, including
the study of friction, lubrication and wear. In tribometry, a
flat, a pin or a sphere is loaded onto the test sample with a precisely known
force. The pin is mounted on a stiff lever, designed as a frictionless force
transducer. The friction coefficient is determined during the test
by measuring the deflection of the elastic arm. Wear coefficient for the pin
and disk materials are calculated from the volume of material lost during the
test. This simple method facilitates the study of friction and wear behavior
of almost every solid state material combination with or without lubricant.
Furthermore, the control of the test parameters such as speed, frequency,
contact pressure, time and the environmental parameters (temperature, humidity
and lubricant) allows simulation of the real life conditions of a practical
wear situation.
|
|
|
 |
|
| Besides
rotation also a linear motion is possible, it reproduces the reciprocating
motion typical of many real world mechanisms.
The instrument measures a friction coefficient
for both the forward and backward displacement of the stroke and
the software can generate data on Hertzian pressure, static partner and sample
wear rates. The reciprocating technique is also very useful for studying the
variation over time of the static coefficient of friction - as opposed to the
kinetic coefficient measured with the Pin-on-Disk geometry. |
|
 |
 top
|
|
