Photoelastic stress response of complex 3D-printed particle shapes
Photoelastic stress response of complex 3D-printed particle shapes
复制标题
复杂 3D 打印颗粒形状的光弹性应力响应
DOI：
10.1016/j.powtec.2022.117852
复制
发表时间：
2022
影响因子：
5.2
通讯作者：
Hapgood, Karen P.
中科院分区：
文献类型：
--
作者：
Amini, Negin;Tuohey, Josh;Long, John M.;Zhang, Jun;Morton, David A.V.;Daniels, Karen E.;Fazelpour, Farnaz;Hapgood, Karen P.
三维颗粒内的应力可视化可以为理解复杂颗粒的行为提供重要的见解。然而，传统的光弹性方法只能产生简单的颗粒形状。最近，3D打印为增强物理代表性颗粒的应力分析范围创造了新的可能性。我们报告了X射线计算机断层扫描和3D打印的结果，结合传统的光弹性分析，以可视化从简单的2D光盘到复杂的3D打印咖啡豆（包括内部空隙）的颗粒应变。印刷层的相对取向和加载力可以影响盘的光学响应而不影响机械性能。此外，提出了3D打印复杂颗粒内产生的应力的半定量测量。潜在的限制和未来感兴趣的三维颗粒的应力可视化领域也概述。
Stress visualization within 3-dimensional particles could provide significant insights for understanding of the behaviors of complex particles. However traditional photoelastic methods are only able to produce simple particle shapes. Recently, 3D-printing has created new possibilities for enhancing the scope of stress analysis of physically representative particles. We report the results of X-ray computed tomography and 3D-printing, combined with traditional photoelastic analysis, to visualize strain for particles ranging from simple 2D discs to complex 3D-printed coffee beans, including internal voids. The relative orientation of the print layers and the loading force can affect the optical response of the discs without affecting the mechanical properties. Furthermore, a semi-quantitative measurement of the generated stresses within 3D-printed complex particle is presented. Potential limitations and areas of future interest for stress visualization of 3-dimensional particles are also outlined.