Good question Mohd! Probably, the word 'rate' is not properly used in Wear topics. The reason for that is the testing time is implicit in the sliding distance, considering the Archard equation. So, I recommend to use the term 'wear rate' for your option 2, and 'wear volume per sliding distance' for the option 1. Both cases are correct to express wear results, you can choose one of them if you called it correctly. Regards.

Firstly, the formula for calculation of wear volume is very general in your case. I would suggest to take track width into account while calculating the wear volume (for exact formula see ASTM standard or literature).

Secondly, wear rate is expressed by the volume of material removed per sliding distance per applied normal load. The time factor has already been taken care by the sliding distance as simplifying sliding distance would land you to time.

Dear Mohd

Please check the contents of the attached file with regard to the Specific wear rate and Cumulative wear rate.

Regards

Mahesh Lohith K. S.

You have already got the right answers regarding your questions from the other colleagues.

I can just add that you can obtain the wear volume using a non contact profilometer. If you observe the wear track with this instrument the software usually associated to him can give you the exact volume of the removed material.

If the sliding distance is not given can we calculate the wear rate by using following formula??

Wear Rate= volume / load*time (mm3/ N-min)

where

time = total distance / speed

total distance (mm)

speed (mm/ min)

Yes, you should be able to use the formula to calculate the wear rate. it means you are expressing the wear rate as the amount of volume lost per load per minute

Dear Mohd

see the following link

http://webcache.googleusercontent.com/search?q=cache:http://home.ufam.edu.br/berti/nanomateriais/8403_PDF_CH07.pdf 

Dear Ibrahim

Could you please provide us the reference of this formula to calculate the wear rate.

Wear Rate= volume / load*time (mm3/ N-min)

Dear Ibrahim,

The book highlighted below can be used as a reference:

Zmitrowicz, A., 2006. Wear patterns and laws of wear–a review. Journal of theoretical and applied mechanics, 44(2), pp.219-253.

You might contact me if you are still confused.

Dear Sir

I conduct aexperiments on pin on disc wear testing but I got a values in microns  and how can I calculate the wear rate pllz send email [email protected]