Montag, 18. Oktober 2010



Now talking about measuring a surface coating's thickness using the so called "calotest".

With a ball of steel and diamond suspension as grinder, you grind a calotte into the surface.

Looking at that calotte with a microscope, you will gain a view like the scheme above indicates: two concentrical circles.

By measuring these circles diameters you can calculate the height "h" of the surface:

The total depth of the Calotte T is: 


the depth of the calotte in the substrate t is: 


thus, the height h of the surface is: 

as the radius R of the steel ball is much greater than the diameter of the calotte, this equation can be simplified to: 




If you want me to post more of this topic, feel free to comment on this post.

Kommentare:

  1. oh, i am sorry for the hardly readable equations.

    sorry!

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  2. damn dude you really are into some engineering

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  3. what in the fuck does this all mean, also, why does it matter?

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  4. sehr guht! :p Waiting for more posts. BTW the equations are hard to read. Could you make your background a lighter colour?

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  5. id like to see more of how all this relates to the acctual function of the machine that would be amazing

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