Hardness Test

Replies

• 

  gohm

  What substrate/material are you wanting to test, that will effect the answer.
• 

  Tkelly

  What hardness you would like to test.
  For rubber, different tester is used. i.e. for measuring Shore "A" hardness.
  For metal Rockwell or brinell hardness tester is used.
  
  Tom
  CAD Outsourcing Services India | Indovance Inc
• 

  ShrinkDWorld

  I want in overall materials.
• 

  g_rakesh2

  I think Vickers Hardness test is the best method.
  
  As it is the most easiest method to use than other hardness testing methods.
  and also calculations are made irrespective of size of the material and material hardness.
  The basic principle, as with all common measures of hardness, is to observe the questioned material's ability to resist plastic deformation from a standard source. The Vickers test can be used for all metals and has one of the widest scales among hardness tests.
  The hardness number is determined by the load over the surface area of the indentation and not the area normal to the force, and is therefore not a pressure.
  The hardness number is not really a true property of the material and is an empirical value that should be seen in conjunction with the experimental methods and hardness scale used. When doing the hardness tests the distance between indentations must be more than 2.5 indentation diameters apart to avoid interaction between the work-hardened regions.
  The hardness number is determined by the load over the surface area of the indentation and not the area normal to the force, and is therefore not a pressure.
  
  The hardness number is not really a true property of the material and is an empirical value that should be seen in conjunction with the experimental methods and hardness scale used. When doing the hardness tests the distance between indentations must be more than 2.5 indentation diameters apart to avoid interaction between the work-hardened regions.
• 

  gohm

  That is a good test, however it is designed for metals. Each specific media will require a different testing meathod. If you want an all incompassing test as the OP seems to want, you will be limited to things like the Mohs scale.
• 

  ShrinkDWorld

  Thanks for comment on k Vickers Hardness test .
  What is you think about "Shore Scleroscope Hardness Test"?
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  gohm

  It tests elasticity or rebound effect of the material. It too is designed for metal, not overall which you are after.
• 

  ShrinkDWorld

  gohm=>
  It tests elasticity or rebound effect of the material. It too is designed for metal, not overall which you are after.

  Yes you are write it just test rebound effect.But you know that rebouned effect is due to conversion of applied fore.In renbound process specialy for Shore Scleroscope Hardness Test there is a rod which is kep on certain height and allow to fall on metal pice. When it strice on metal some KE is used for making mark & remaing gives to rod as KE in opposite direction.
• 

  gohm

  True, no dissagreement from me. Just wanted to make sure it was known that it is not quite a universal material test as you are searching for.