In indentation testing of material, the hardness is a function of force and size of the impression.(a) True(b) FalseThe question was asked in unit test.Query is from Testing of Mechanical Properties topic in section Inspection Testing in Foundries of Casting-Forming-Welding I

In indentation testing of material, the hardness is a function of forc

1.	In indentation testing of material, the hardness is a function of force and size of the impression.(a) True(b) FalseThe question was asked in unit test.Query is from Testing of Mechanical Properties topic in section Inspection Testing in Foundries of Casting-Forming-Welding I
Answer» Right ANSWER is (a) True For explanation: Indentation test ACTUALLY CREATES a permanent IMPRESSION on the surface of material. And the hardness is a function of FORCE and size of the impression, so the force and size of the impression can be related to the hardness which can be objectively related to the resistance of material to the permanent penetration.

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