Effect of surface treatment and cutting orientation to the changes in stents surface roughness

被引：0

作者：

Syaifudin A. ^{[1
]}

Ariatedja J.B. ^{[1
]}

Sasaki K. ^{[2
]}

机构：

[1] Department of Mechanical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Surabaya

[2] Division of Human Mechanical Systems and Design, Faculty of Engineering, Hokkaido University, Sapporo

来源：

Key Engineering Materials | 2020年 / 867卷

关键词：

Balloon expandable stent; Cutting orientation; Surface roughness; Surface treatment;

D O I：

10.4028/www.scientific.net/KEM.867.125

中图分类号：

学科分类号：

摘要：

During the implantation process, an expandable balloon stent undergoes a change in mesh shape with a high strain rate. Permanent mesh shape changes to the stents indicate plastic deformation has occurred. On a micro-scale, plastic deformation has significant influence when interacting with the soft tissue of human blood vessels. This experimental study aims to investigate the effect of surface treatment and cutting orientation on the changes in surface roughness that definitely occurs when a stent deployed. To study the effect of surface treatment, two types of surface treatment were applied after surface polishing, i.e. etching and electropolishing. Surface polishing is carried out to enable microscopic observation. As for examining the effect of cutting orientation, the plate is cut in lateral and longitudinal orientation against the predicted-rolling direction of 316L sheet-type of stainless steel. An intermittent tensile test is conducted to obtain information about the changes in surface roughness. The surface observation is carried out three times on a similar surface of testpiece after reaching plastic deformation. The experimental study shows that the orientation of raw material has an insignificant effect on the changes in stent surface roughness. As for the surface treatments, electropolishing tended to decrease the tensile property of material. © 2020 Trans Tech Publications Ltd, Switzerland.

引用

页码：125 / 133

页数：8

共 27 条

[1]

Zhao H., Humbeeck J., Sohier J., de Scheerder I., Electrochemical Polishing of 316L Stainless Steel Slotted Tube Coronary Stents, (2002)

[2]

Hryniewicz T., Rokicki R., Rokosz K., Surface Characterization of AISI 316L Biomaterials Obtained by Electropolishing in a Magnetic Field, (2008)

[3]

Mizuno T., Mulki H., Changes in Surface Texture of Zinc-Coated Steel Sheets under Plastic Deformation, 198, pp. 176-184, (1996)

[4]

Syaifudin A., Takeda R., Sasaki K., Effect of balloon shape in treatment of eccentric plaque considering the changes in stent surface roughness, Proc. Mech. Eng. Congr., (2014)

[5]

Syaifudin A., Takeda R., Sasaki K., Effects of plaque lengths on stent surface roughness, Biomed. Mater. Eng., 25, pp. 189-202, (2015)

[6]

Syaifudin A., Sasaki K., FEM Analysis on Balloon Expandable Stent considering Viscoplasticity, (2018)

[7]

Syaifudin A., Takeda R., Sasaki K., Development of asymmetric stent for treatment of eccentric plaque, Biomed. Mater. Eng., 29, pp. 299-317, (2018)

[8]

Syaifudin A., Ariatedja J.B., Kaelani Y., Takeda R., Sasaki K., Vulnerability analysis on the interaction between Asymmetric stent and arterial layer, Biomed. Mater. Eng., 30, pp. 309-322, (2019)

[9]

Wichern C.M., de Cooman B.C., van Tyne C.J., Surface roughness changes on a hot-dipped galvanized sheet steel during deformation at low strain levels, Acta Mater, 52, pp. 1211-1222, (2004)

[10]

Al-Qureshi H.A., Klein A.N., Fredel M.C., Grain size and surface roughness effect on the instability strains in sheet metal stretching, J. Mater. Process. Technol., 170, pp. 204-210, (2005)

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