Open Access

Table 2

Representative surface roughness parameters [30,31].

Parameter Designation
Spc Arithmetic mean value of peak curvature
Sa Mean arithmetic height of the scale-limited surface area
RSm Mean spacing of the profile elements
Ra Arithmetic mean value of the height
Sdr Developed transition area ratio of a scale-limited surface
Str Aspect ratio of the surface texture
Sz Maximum height of the scale-limited surface
Rz Maximum height

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