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DOE OSTI · 1797574

Structural response of 3D-printed rubber lattice structures under compressive fatigue

Hatamleh, Mohammad I.·Barrios, Carlos A.·Ren, Yao·Zhang, Runyu·Nambiar, Visakhan Vijayan·Williams, Austin·Shah, Pratik·Guyan, Alan·Lund, Benjamin·Lu, Hongbing·Voit, Walter
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Abstract

In this work, a new direct UV curing, polyurethane-like, highly stretchable rubber, Elastic ToughRubber 90™ (ETR 90), is demonstrated for 3D printing via photocuring with Texas Instruments DLP® 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.

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36 MATERIALS SCIENCE

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Hatamleh, Mohammad I., Barrios, Carlos A., Ren, Yao, Zhang, Runyu, Nambiar, Visakhan Vijayan, Williams, Austin, Shah, Pratik, Guyan, Alan, Lund, Benjamin, Lu, Hongbing, Voit, Walter. 2021-02-17. Structural response of 3D-printed rubber lattice structures under compressive fatigue. https://doi.org/10.1557/s43579-021-00012-4

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36 MATERIALS SCIENCE↗