مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

پرینت سه‌بعدی ساختارهای مبتنی بر وکسل با ایجاد فایل اس‌تی‌ال به ‌صورت مستقیم

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشجوی کارشناسی ارشد، گروه مهندسی مکانیک، دانشگاه بیرجند، بیرجند، ایران
2 استادیار، گروه مهندسی مکانیک، دانشگاه بیرجند، بیرجند، ایران
3 دانشیار، گروه مهندسی مکانیک، دانشگاه بیرجند، بیرجند، ایران
چکیده
ساختار‌های مبتنی بر وکسل از روی‌ هم قرارگرفتن بلوک‌های مکعبی کوچک به نام وکسل ایجاد می‌شوند. کاربرد‌های رایج این نوع ساختارها در نمایش حجمی تصاویر پزشکی و گرافیک رایانه‌ای است. در ساختارهای مبتنی بر وکسل، به‌هم‌پیوستگی ساختار مهم است و تقریباً تمام خواص ساختار را تحت تأثیر قرار می‌دهد. همچنین اتصال، موضوع مهمی برای قابلیت ساخت ساختار مبتنی بر وکسل به روش چاپ سه‌بعدی است. این نوع ساختارها غالباً به علت پیچیدگی، قابلیت ساخت به روش‌های سنتی را ندارند. در این مقاله از تصاویر دوبعدی برای ایجاد یک ساختار سه‎بعدی مبتنی بر وکسل استفاده شده است و با توجه به این ‌که یک جسم فیزیکی واقعی باید یک ناحیه به‌هم‌پیوسته باشد یک الگوریتم کارآمد برای شناسایی نواحی به‌هم‌پیوسته که خوشه نامیده می‌شوند، ارائه می‌شود. برای چاپ سه‌بعدی جسم که در واقع بزرگ‌ترین خوشه خواهد بود، به فایلی نیاز است که توسط نرم‌افزارهای اسلایسر دستگاه چاپ سه‌بعدی قابل خواندن باشد. فرمت فایل اس‌تی‌ال رایج‌ترین فرمت در این زمینه است. بنابراین الگوریتمی برای ایجاد فایل اس‌تی‌ال ساختار به‌صورت مستقیم ارائه شده و فایل اس‌تی‌ال ساختار با استفاده از کدگذاری ASCII ایجاد می‌شود. نهایتاً به‌منظور صحه‌گذاری و ارزیابی الگوریتم ارائه‌شده، فایل اس‌تی‌ال خروجی الگوریتم پیشنهادی به روش رسوب ذوب فیلامنت پرینت گرفته شد.
کلیدواژه‌ها

عنوان مقاله English

3D printing of voxel-based structures by direct creation of STL file format

نویسندگان English

Ali Ehsani Nezhad 1
Ali Hasanabadi 2
Mojtaba Sheikhi Azqandi 3
1 MSc Student, Mechanical Engineering Department, University of Birjand, Birjand, Iran
2 Assistant Professor, Mechanical Engineering Department, University of Birjand, Birjand, Iran
3 Associate Professor, Mechanical Engineering Department, University of Birjand, Birjand, Iran
چکیده English

Voxel-based structures are composed of tiny cubic building blocks called voxels. These structures have found widespread applications in volumetric visualization of medical images and computer graphics. In voxel-based structures, connectivity plays a crucial role, influencing almost all properties of the structure. Moreover, connectivity is essential for the manufacturability of voxel-based structures using 3D printing techniques. Due to their inherent complexity, traditional fabrication methods are not suitable for constructing these structures. In this research, two-dimensional images are used to create a voxel-based three-dimensional structure, and considering that a real physical object must be a connected region, an efficient algorithm for identifying connected regions called clusters is presented. For the 3D printing of the object, which will actually be the largest cluster, a file that can be read by the slicer software of the 3D printing machine is needed. The STL file format is the most common format in this domain. Therefore, an algorithm was proposed to directly generate the STL file of the structure, and the STL file was produced. ASCII encoding was employed for file generation. The STL file generated by the algorithm was printed using the fused deposition modeling method.

کلیدواژه‌ها English

3D Printing
Voxel-Based Structures
STL File Format Creation
Structure Continuity
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