Qais A. Habash, Noor Ali Sadek, Ahmed Faeq Hussein, Abbas K. AlZubaidi
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引用次数: 0
摘要
三维打印(3DP)越来越多地用于实现各种几何设计和原型的快速周转,是快速成型制造技术(AMT)的重要组成部分。3DP 技术能有效改善复杂模型的生产,成本低,生产耗时短,材料用量少。使用 3DP 技术优化结果的关键在于几何形状的准备。以下技术可有效缩短复杂和非线性 CAD 文件的 3D 打印过程所需的时间。熔融沉积建模/制造(FDM/FFF)技术已成为包括生物医学在内的许多应用领域的首选。然而,在几何粗糙度和质量区方面仍存在一些障碍。本文针对生物医学设备和仪器中使用的三维打印形状提出了一种优化方法,即使用 FDM 技术最大限度地减少附着在模型上的支撑结构。在这项研究中,我们提出了一种方法,利用前向平面学习(FPL)算法对受重力影响的部件进行动态补偿,从主物体的几何形状中延伸出来,以最大限度地降低三维打印物体的尖角高度。经过切片阶段后,结果证明质量良好,优化了物体表面,并将打印时间缩短了 32%-38%。建议的方法有望为 FDM 3D 打印定义更好的切片和工具路径设置。不过,该方法没有在其他 3DP 方法(立体光刻(SLA)、选择性激光烧结(SLS)和数字光处理(DLP))上进行测试,因为需要对这些 3D 打印工艺进行更多的验证工作。
Mesh Optimisation for General 3D Printed Objects with Cusp-Height Triangulation Approach
3D printing (3DP) is increasingly utilized to achieve quick turnaround on various geometric designs and prototypes, being the growing part of additive manufacturing technology (AMT). The 3DP technique effectively improves the production of complex models in terms of low-cost, time-consuming production, and with less material volume. The key to results optimisation with 3DP is the preparation of the geometry. The following techniques can effectively reduce the required time of the 3D printing process for complex and non-linear CAD files. The fused deposition modelling/fabrication (FDM/FFF) techniques become the first choice in many applications, including biomedical ones. Still, some obstacles exist in the geometry roughness and quality zones. This paper proposes an optimisation method for 3D printed shapes used in biomedical devices and instrumentation by minimising the support structure attached to the model using the FDM technique. In this research, we proposed a method for dynamic compensation against gravity-affected parts extended from the main object’s geometry using a forward planar learning (FPL) algorithm to minimise cusp height in 3D printed objects. After the slicing stage, the outcomes proved to be of good quality, optimised the object’s surfaces, and minimised the printing time by 32%–38%. The proposed method is promising in defining a better setting for slicing and toolpath for FDM 3D printing. However, this method was not tested on other 3DP methods (Stereolithography (SLA), Selective laser sintering (SLS), and Digital Light Processing (DLP)), as more verification efforts need to be done on these 3D printing processes.
期刊介绍:
Pertanika Journal of Science and Technology aims to provide a forum for high quality research related to science and engineering research. Areas relevant to the scope of the journal include: bioinformatics, bioscience, biotechnology and bio-molecular sciences, chemistry, computer science, ecology, engineering, engineering design, environmental control and management, mathematics and statistics, medicine and health sciences, nanotechnology, physics, safety and emergency management, and related fields of study.