https://scholars.lib.ntu.edu.tw/handle/123456789/474219
標題: | Optimization of laser processing in the fabrication of stents | 作者: | Chen C.-S. Lin S.-Y. NAI-KUAN CHOU YIH-SHARNG CHEN Ma S.-F. |
公開日期: | 2012 | 卷: | 53 | 期: | 11 | 起(迄)頁: | 2023-2027 | 來源出版物: | Materials Transactions | 摘要: | Stents are commonly inserted into coronary arteries for treating cardiovascular diseases. Nonetheless, the process of manufacturing metal stents is challenging owing to the geometric design, the optimization of machining methods and the materials involved. Fiber lasers were used as the laser cutting technology for cutting stents. The experiment revealed the importance of precise technical parameters, including the lens' focal length, focus position, pulse frequency, cutting speed and pulse width. These parameters strongly influence the kerfs width and the quality of the cutting seam surface. Our results indicate that the width of the kerfs increases with an increase in the pulse frequency and pulse width, whereas it decreases or shows minimal change at higher cutting speeds. The surface roughness for stent laser cutting was Ra 43.5 nm, which essentially meets the design requirement for further performance evaluation. Finally, high-quality cutting of a 316LVM stainless steel vascular stent was achieved. ? 2012 The Japan Institute of Metals. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868099054&doi=10.2320%2fmatertrans.M2012188&partnerID=40&md5=c9c5fa55644d3e770e53581dfb0f1e92 https://scholars.lib.ntu.edu.tw/handle/123456789/474219 |
ISSN: | 1345-9678 | DOI: | 10.2320/matertrans.M2012188 | SDG/關鍵字: | Cardio-vascular disease; Coronary arteries; Cutting speed; Design requirements; Focal lengths; Focus positions; Geometric design; High quality; Laser cutting; Laser process; Machining methods; Metal stents; Performance evaluation; Pulse frequencies; Pulsewidths; Stent; Vascular stents; Automobile manufacture; Fiber lasers; Laser applications; Laser beams; Optimization; Stents; Surface roughness; Cutting |
顯示於: | 醫學系 |
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