طراحی و ویژگی‌شناسی فیلتر تنفسی متخلخل جایروئیدی از آلیاژ Ti‑6Al‑4V ساخته‌شده به روش SLM

نوع مقاله : مقاله پژوهشی

نویسندگان

1 مهندسی مکانیک ،دانشکده مکانیک ،داشگاه صنعتی اراک، شهر اراک، ایران

2 گروه مکانیک،دانشکده مکانیک ،دانشگاه صنعتی اراک،شهر اراک،ایران

3 گروه مکانیک ،دانشکده مکانیک،دانشگاه تربیت مدرس تهران،تهران،ایران

چکیده
ذرات معلق هوایی، مانند ریزگردها، تهدید جدی برای سلامت تنفسی ایجاد می‌کنند. فیلترهای پلیمری متداول محدودیت‌هایی در قابلیت استفاده مجدد و استریل‌سازی دارند. در این پژوهش، طراحی، ساخت به روش ذوب انتخابی لیزر (SLM) و ویژگی‌شناسی یک فیلتر استوانه‌ای متخلخل از آلیاژ Ti-6Al-4V با توپولوژی جایروئید کانفورمال گرادیان‌دار انجام شد. ساختار شامل شبکه‌های جایروئید با فواصل کانال گرادیان‌دار (دیواره داخلی ۲06 µm، مرکزی 396 µm، خارجی ۴63 µm؛ میانگین وزنی ۴۱۵ µm) و تخلخل مؤثر ~۶۵٪ است. طراحی با نرم‌افزار nTopology بهینه‌سازی شد تا همپوشانی سلول‌ها و رهگیری ذرات را افزایش و نفوذپذیری جریان را حفظ کند. نمونه (قطر خارجی ۱۵ mm، داخلی ۹ mm، ارتفاع ۱۰ mm) با پودر Ti-6Al-4V (۱۵–۴۵ µm) ساخته و پس از تنش‌زدایی (۶۰۰°C) مورد آنالیز قرار گرفت. نتایج شامل میکروسکوپ نوری (توزیع α سوزنی در زمینه β)، متالوگرافی (میانگین فاصله لایه‌ها ۴۱۵ µm)، سختی ویکرز (میانگین ۳۲۷ HV)، چگالی بدنه (۴.۱۸ g/cm³) و تخلخل بدنه (~۵.۵٪) بود.

کلیدواژه‌ها


عنوان مقاله English

Design and Characterization of SLM-Fabricated Graded Gyroid Ti-6Al-4V Porous Filters for Respiratory Applications

نویسندگان English

amir mohammad babaei 1
mahdi safari 2
mohammad reza karafi 3
1 Department of Mechanical Engineering, Faculty of Mechanical Engineering, Arak University of Technology, Arak, Iran.
2 Associate Professor, Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
3 Associate Professor, Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran
چکیده English

Airborne particulate matter, such as fine dust and aerosols, poses serious threats to respiratory health. Conventional polymer filters suffer from limited reusability and sterilization challenges. This study presents the design, fabrication via Selective Laser Melting (SLM), and characterization of a cylindrical porous filter made from Ti-6Al-4V alloy with a graded conformal Gyroid topology. The structure features graded channel spacings (inner wall: 206 µm, mid-region: 396 µm, outer wall: 463 µm; weighted mean: 415 µm) and an effective open porosity of ~65%. The design was optimized in nTopology software to enhance cell overlap and particle trapping while maintaining airflow permeability. The sample (OD=15 mm, ID=9 mm, H=10 mm) was fabricated from Ti-6Al-4V powder (15–45 µm) and characterized after stress-relief annealing at 600°C. Results include optical metallography (acicular α phase in β matrix), metallographic measurements (mean layer spacing of 415 µm), Vickers microhardness (mean 327 HV), bulk density (4.18 g/cm³), and bulk porosity (~5.5%).

کلیدواژه‌ها English

Respiratory Filter
Additive Manufacturing
Gyroid Topology
Density
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دوره 5، شماره 3
پاییز 1404
صفحه 383-402

  • تاریخ دریافت 01 مهر 1404
  • تاریخ بازنگری 30 مهر 1404
  • تاریخ پذیرش 02 آبان 1404