Quantification of the Severity of Ridging in Ferritic Stainless Steel Sheets Using a Profilometric Technique

Suresh Kodukula, Thomas Ohligschläger, David Porter

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

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.
Original languageEnglish
Article numberISIJINT-2020-137
Pages (from-to)380-386
Number of pages7
JournalISIJ International
Volume61
Issue number1
Early online date11 Sep 2020
DOIs
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • ferritic stainless steels
  • ridging
  • ridging index
  • surface profile
  • spline filtering

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