A multiscale topography analysis of ground stainless steel and titanium alloys
Fiche publication
Date publication
septembre 2007
Auteurs
Membres identifiés du Cancéropôle Est :
Dr ANSELME Karine
Tous les auteurs :
Giljean S, Bigerelle M, Anselme K
Lien Pubmed
Résumé
This study aims to perform a multiscale analysis of abraded surfaces of 316L austenitic stainless steel and titanium alloys (TiAl6V4) grinded at different paper grades. The authors propose to answer the following question: For a given distribution of silicon carbide grains of the paper, what is the best roughness parameter and at which scale must it be evaluated better to discriminate the effect of the mechanical properties of the materials? Paper grades from 80 to 4000 were used under identical pressure and erosion time. It can be concluded that the values of the amplitude roughness parameters depend on the observation scale. It is outlined that the abrasion process is very reproducible. A statistical analysis is then proposed, first, to define a classification of the relevance of the roughness parameters for each grain size distribution, and second, to determine at which scale the mechanical properties of the bulk are more influenced for all paper grades. Finally, at relevant scales, the Abbott amplitude parameters roughness kernel (RK) is the best parameter to discriminate the paper grade effect. The mean distance between asperities (SM) is the preferred method for determining the wear effect on materials and the linear mean normalizing auto-correlation (AMNLN) is the preferred method for determining the interaction between paper grade and materials.
Référence
Proc Inst Mech Eng Part B-j Eng Manuf. 2007 Sep;221(9):1407-20