Material science tests

Wikipedia describes hardness as: “a measure of how resistant solid matter is to various kinds of permanent shape change when a compressive force is applied. Some materials (e.g. metals) are harder than others (e.g. plastics). Macroscopic hardness is generally characterized by strong intermolecular bonds, but the behavior of solid materials under force is complex; therefore, there are different measurements of hardness: scratch hardness, indentation hardness, and rebound hardness.”

According to my sophomore undergrad year material sciences textbook there are three widely used hardness tests: Brinell, Vickers and Rockwell. Fortunately I found an excellent YouTube channel where we can see each of these tests performed. Enjoy:

The Brinell method

The Rockwell procedure

The Vickers method

External resources:

Guidelines to hardness testing by Hegewald & Peschke

Wikipedia links page of the three hardness tests above and many others

MaterialsScience2000 YouTube channel

Material hardness tests
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