Open AccessAnalysis of the influence of surface roughness of various types of wood on the results of their hardness measured by the Leeb method
Author(s) -
Michał Bembenek,
Łukasz Kowalski,
Jan Pawlik
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1199/1/012071
Subject(s) - hardness , surface roughness , materials science , composite material , surface finish , young's modulus , vickers hardness test , elasticity (physics) , machining , metallurgy , microstructure
Determining the hardness in the Leeb scale consists in measuring the velocity of the impact mass before and after hitting the sample. The result is the speed of the impactor shall after the rebound divided by the speed before the rebound (multiplied by 1000). The measured hardness ranges from 0 to 1000 and is largely dependent on the Young's modulus of elasticity. The article presents the Leeb hardness measurement tests of six various species of wood. The samples were machining before testing in such a way that there were places with different surface roughness on its surface. The research showed the differentiation of the hardness test results for the same tree species depending on the roughness of the surface