A new method to quantify the ridging phenomenon in ferritic stainless steels has been developed based on the evaluation of surface profiles after the tensile elongation of 100 mm wide sheet specimens. The ridging components of the surface profiles are extracted by a tailored spline filtering procedure. A ridging index is proposed to quantify the severity of the surface defect based on surface profile height and spac-ing parameters. The procedure is independent of the type of profilometer used as long as unfiltered raw profiles can be recorded. The reproducibility of the measurement method and its correlation with the visual assessment of strained specimens is discussed.
|Number of pages||7|
|Publication status||E-pub ahead of print - 11 Sep 2020|
|MoE publication type||A1 Journal article-refereed|
- ferritic stainless steels
- ridging index
- surface profile
- spline filtering