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圧子球材質の相違が硬さに及ぼす影響
圧子球材質の相違が硬さに及ぼす影響
The Influence of Different Mechanical Properties of the Spherical Indenters on Hardness
石橋, 達弥
下田, 茂
日本機械学会
Material Testing
Mechanical Property
Hardness
Mean Contact Pressure
Elastic-Plastic Transient Area
Profile Coefficient of Indentation
Spherical Indenter
Brinell Hardness
Deformation of Indenter
Hardness is influenced by the different mechanical properties of the spherical indenter in the elastic-plastic transient indenting process. To clarify that point, we indented steel and tungsten-carbide spherical indenters in the several standard blocks for hardness. In order to establish the relations of the elastic-plastic transient indenting process experimentally we related the hardness P_m(mean contact pressure) with a true profile coefficient of the permanent indentation : (d/D_p), not with an apparent profile coefficient : (d/D) used traditionally, and formulated as follows ; P_m=P_<up>(d/D_p)^<xp>. We can calculate the hardness affected by the different mechanical properties of the spherical indenter using this formula for arbitrary conditions. Further, we compared the Brinell hardness obtained by Yoshizawa with our calculated values, and we obtained a good coincidence between them.
日本機械学会
1986-08
jpn
journal article
http://hdl.handle.net/10191/1769
https://niigata-u.repo.nii.ac.jp/records/3702
AN0018742X
03875008
日本機械学会論文集. A編
日本機械学会論文集. A編
52
480
1958
1965
https://niigata-u.repo.nii.ac.jp/record/3702/files/3_0006.pdf
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2019-07-30