Principle and Methods of Nanoindentation Test
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Indentation test is a simple and effective method in the assessment of mechanical properties of materials and has widely been adopted in the latest century. Indentation technique evaluates the mechanical properties of materials by driving an indenter into the material surface and subsequently imaging the impression. Indentation test was firstly used for the measurement of hardness. A hard object with certain shape and size is used as indenter and indented into the tested material under certain pressure keeping for a while before unloaded. Then the hardness of the tested material can be determined from the relationship between the total indentation load and displacement or area. Based on the principle above, there are many traditional methods of hardness testing, such as Vickers hardness method (Vickers), Knoop hardness method (Knoop), and Rockwell hardness method (Rockwell).
KeywordsNanoindentation Tests Vickers Hardness Method Wedge-shaped Indenter Indented Cylinder Super Thin Film
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