Thanks Walter!

@DrBExplains

10 ай бұрын

; )

Very good explanation! Thanks, Dr. B!

@DrBExplains

3 жыл бұрын

I am glad you found it useful. Thank you for your comment : )

Much needed topic

Good explanation Sir

Veyr nicely explained Dr. Thank you

@DrBExplains

2 жыл бұрын

Thanks and welcome

Is hardness in Pascals or Mega Pascals? If its megapascals why is it normal to bake them into wear coefficients?

Excellent Sir..

@DrBExplains

2 жыл бұрын

So nice of you

thank you so much

@DrBExplains

10 ай бұрын

thank you!

Can you make a video on effect of plotting graph to stud the effect o parameter on each other

How do you calculate the load, speed and travel for the test?

@DrBExplains

2 жыл бұрын

Load and speed are testing parameters. The load is usually achieve by applying a dead weight and speed may come from fixed speed motor or specified via motor controller. The travel is calculated by multiplying the number of rotations of the disk (instruments usually have a counter) by the circumference of the disk where the pin makes contact with the disk.

Sir kindly explain how can we use Archard's equation for the calculation of wear coefficient of pin sliding on plate? If sliding distance is not known, only known thing is the frequency, applied load and volume loss.

@DrBExplains

7 ай бұрын

it should be possible but you would need to know the duration of the test

Hardness is a number then how you convert it in to megapascal. Can you please clear?

@DrBExplains

2 жыл бұрын

The hardness number is calculated by taking the force applied by the indenter divided by the area of the impression. While testing the load is usually specified in units of kgf and the area is measured in mm^2, however the hardness number is usually reported without these units. Nonetheless this "force by area" is similar to pressure so the units can be converted to MPa or GPa.

@udayagnihotri2702

2 жыл бұрын

Thank you, Sir.

Which hardness value should be taken? In one case you have taken HB and in the other case you have taken HV, so numerically there is too much difference!!!

@devilsKrEEd

2 жыл бұрын

You can convert both to mpa

@DrBExplains

Жыл бұрын

Yes, and then use the value for material/part you are concerned with.