Structural response of 3D-printed rubber lattice structures under compressive fatigue
Structural response of 3D-printed rubber lattice structures under compressive fatigue
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DOI：
10.1557/s43579-021-00012-4
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发表时间：
2021-02-17
影响因子：
1.9
通讯作者：
Voit, Walter
中科院分区：
文献类型：
--
作者：
Hatamleh, Mohammad I.;Barrios, Carlos A.;Voit, Walter
德州仪器公司的DLP(注册商标)光学系统通过光固化展示了一种新型的直接UV固化、类似聚氨酯、高度可伸缩的橡胶--弹性触摸式橡胶90(TM)(ETR 90)，可用于3D打印。从ETR 90 3D打印包括具有以主体为中心的立方晶格核心的三明治结构的测试样品阵列。这些试件的压缩行为的特征是高达10K和高达100K的疲劳加载循环。在载荷作用下，内部的、视觉上受阻的结构可使用原位X射线断层成像进行可视化。所有晶格结构保持完好，并观察到完全恢复，表明3D打印橡胶的循环耐久性。
A new direct UV curing, polyurethane-like, highly stretchable rubber, Elastic ToughRubber 90 (TM) (ETR 90), is demonstrated for 3D printing via photocuring with Texas Instruments DLP(R) optical systems. An array of test specimens, comprising a sandwich structure with a body-centered cubic lattice core, are 3D printed from ETR 90. The compressive behavior of these specimens is characterized up to 10 k and up to 100 k fatigue-loading cycles. The internal, visually obstructed, structures under loads are visualized using in situ X-ray tomography. All lattice structures remain intact and full recovery is observed, indicating the cyclic durability of the 3D-printed rubber.