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 spacing 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.

基于对100 mm宽钢板试样拉伸后的表面轮廓的评估，已开发出一种量化铁素体不锈钢中皱纹现象的新方法。表面轮廓的起伏部分通过定制的样条滤波程序提取。根据表面轮廓高度和间距参数，提出了一种皱纹指数来量化表面缺陷的严重程度。只要可以记录未过滤的原始配置文件，该过程就与所使用的轮廓仪的类型无关。讨论了测量方法的可重复性及其与应变样本的目测评估的相关性。