Tribology 101

Tribology is a study on friction, wear, adhesion and scratch resistance of moving interferences in contact. In other words, it is a study on movement of surface in contact with one another and the surroundings. The study also involve dissipation of energy (friction induces heat energy and etc.). Wear, being one of the sub-content of tribology is a study of useful life of a material or a part component of a machine. It is given by the equation:


Usp = Vloss / (FxD)

Usp = wear rate
Vloss = volumetric loss
F = force applied
D = total sliding distance

There are 4 types of wear, namely:
a)Abrasive wear
-Due to presence of hard/sharp particles between contacting surface (moving)

b)Adhesive wear
-Due to unsuitable lubrication or lubricant ran dry between moving surfaces in contact

c)Surface fatigue
-Due to repeated mechanical stress

d)Tribo-oxidation
-Tribological sliding causes chemical reaction, increase of temperature of contacting surfaces and oxidation

From the 4 types of wear mentioned above, wear is a study of useful life of components. The useful life of components here are components of a machine that experiences friction during operation. Friction causes loss of solid material on the contacting surface and this will reduces the integrity of the material. Thus, this is why friction and wear are mentioned concurrently since all 4 types of wear are caused by frictional problems.

Oh kecian my blog..

Kasihan kan my blog..kena abandon since February..bad blogger..bad blogger.. But then, I've been very busy in my final stage as a student.. My final semester, finall I'm getting my degree in engineering.. Hopefully it'll go well... Right now I'm looking for job here and there, but there are 2 places I have in mind..later la..if I get the job baru I mention..keep fingers crossed..

Well...yesterday was my final year project presentation..I think it went well eventhough the last few minutes I felt the itch on my throat, prompting me to coungh.. In the end my examiner said good job and interesting research, that is good enough for me.... Oh ya..lupa..I'm nursing my left ankle at the moment...yeah, something happened but it's more of injury due to last time punya activities... In the end, over exerting yourself in sports is not good eh.. my bones at my ankle area.the socket area or something...dah corrode...so the ..erm..duno how to story..cut story short... I need a surgery..just a small one..don't worry... It's been a while, so I'll stop here first...it's a very hot day....so malas type panjang story..till end..Cheers...