ABSTRACT
The total height and the mean value of the waviness profile measured with the laser profilometry are 1.3-4.3 times higher than the ones deduced from the mechanical method.
The results of surface geometry characterization with the four methods can be summarized as follow:
r=0.97
W a
s ,
W a
p [
µ m
]
r=0.94
W ap
[ µ
m ]
• in the case of the profilometry methods, the waviness parameters are about 5% (mechanical profilometry) and 9% (laser profilometry) smaller than the one corresponding to the total profile. This confirms that the global shape of the profile has been preserved through the waviness filtration;
• the mean roughness values are close to each other for the treatment types and the both profilometry methods (Rap = 17 ± 2 and Ras = 19 ± 7, respectively). However, the total height of the roughness profile determined with laser profilometry was 2.8 – 5.5 times exceeding the one obtained with mechanical profilometry with the same filtration method.
