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Analysis of the Load Dependence of Indentation Experiments

✍ Scribed by Prof. Dr. rer. nat. habil. Dr.-Ing. B. Berg; Dr. rer. nat. habil. P. Grau


Book ID
102133071
Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
246 KB
Volume
28
Category
Article
ISSN
0232-1300

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✦ Synopsis


Analysis of the Load Dependence of Indentation Experiments

In most cases of microhardness Kick's law of similarity is unvalid. Therefore different equations were supposed to describe the real dependence of load and diagonal length of an indentation. These equations are independent from one another and it is not allowed to combine these. It is shown by means of experimental values from JOSHI and PANDYA that in a limited range of load different types of these equations can be used without a possibility to decide which gives a better description.

Bei Mikrohartemessungen ist in den meisten Fallen das Kick'sche Ahnlichkeitsgesetz nicht erfiillt. Deshalb wird mit verschiedenen Ansatzen versucht, die reale Abhangigkeit zwischen Indenterbelastung und Lange der Diagonalen des Eindrucks zu beschreiben. Diese Ansatze sind voneinander unabhangig und diirfen nicht miteinander kombiniert werden. Mit experimentellen Ergebnissen von JOSHI und PANDYA wird gezeigt, daI3 in begrenzten Lastbereichen verschiedenartige Ansatze giiltig sind, ohne entscheiden zu konnen, welcher der Ansatze die bessere Beschreibung liefert.

This can be confirmed with sufficient accuracy for macrohardness. But several authors (SCHULZ, HANEMANN; see also BUCKLE; MOTT) have detected experimentally that this simple law is invalid in most of the cases of microhardness. So there exist a lot of equations


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