Germak, Experimental analysis on the influence quantities in the Rockwell C hardness test
, Proceedings of International Symposium on Advances in Hardness Measurement, HARDMEKO '98, Beijing, China (1998).
The effects of the lubricant are not evident in the results of normal indentation hardness tests
(Rockwell and Shore D Hardness tests
) as shown in Fig.
Modern dynamic hardness tests
include high strain rate apparatus such as split Hopkinson pressure bar devices (8,9,10), or balls or indenters fired by gas guns (11,12,13).
The indentation hardness tests
are static and the results obtained by these test methods should not be considered as a measure of the abrasion or wear resistance of the plastic materials in question.
Currently one of the most efficient and rapid methods for characterizing advanced materials in terms of important characteristics is the Martens hardness test
Mechanical properties determined following universal hardness tests
performed on dual-phase steel samples with 0.
Results of hardness test
HV0,2 Area measured Values determined, HV0,2 Average value Center (C) 252, 257, 249, 258, 256 254 Area 7 264, 257, 259, 259, 263 260 Area 5 255, 271, 262, 264, 265 263 Area 2 265, 260, 261, 273, 262 264 Areal 262, 264, 261, 265, 262 263 Area 300 281, 278, 263, 285, 267 275 Area 150 255, 251, 260, 252, 257 255 Tab.
This is caused by non-ideal conditions of the hardness test
(Mendes et al.
Figure 1 presents schematically the geometric characteristics of Martens hardness test
and in figure 1b a trace of test on cadmium telluride after indenter removal is shown.
b) For impact load tests the port penetrator 9 together with the spherical tungsten carbide penetrator 10 corresponding to the test type is tapped to the guiding rod 6, then the hardness test
type is electronically set, and the switches [K.
The principles is similar to the Brinell hardness test
There is no one hardness test
method used across this broad range of materials; so the numbers are calculated and extrapolated from what one might expect from a Brinell hardness test