Publication

3D-Printed Gyroid Core Sandwich Composites

2026

Abstract

This study presents the integration of Additive Manufacturing (AM) with cellular metamaterials in composite sandwich structures. Experimental and numerical investigations were conducted on gyroid-based triply periodic minimal surface (TPMS) cores combined with glass fiber-reinforced polymer (GFRP) face sheets to maximize mechanical performance. Findings reveal that integrating 3D-printed cores into sandwich composites results in a lightweight structure with high load-bearing capacity. The sandwich beam system achieves seven times the load-bearing capacity and four times the stiffness of the core-only specimen. The additive manufacturing of large-scale composite metamaterials offers significant potential due to their superior mechanical properties compared to traditional two-dimensional structures. However, further research is needed to investigate the effects of printing parameters on the final part.

Official source

https://infoscience.epfl.ch/entities/publication/5bed5c6e-df62-4919-b19a-a69f278a4e17

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5bed5c6e-df62-4919-b19a-a69f278a4e17

About this result

Related concepts (32)

Sandwich-structured composite

In materials science, a sandwich-structured composite is a special class of composite materials that is fabricated by attaching two thin-but-stiff skins to a lightweight but thick core. The core material is normally low strength, but its higher thickness provides the sandwich composite with high bending stiffness with overall low density. Open- and closed-cell-structured foams like polyethersulfone, polyvinylchloride, polyurethane, polyethylene or polystyrene foams, balsa wood, syntactic foams, and honeycombs are commonly used core materials.

Rolling-element bearing

In mechanical engineering, a rolling-element bearing, also known as a rolling bearing, is a bearing which carries a load by placing rolling elements (such as balls or rollers) between two concentric, grooved rings called races. The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding. One of the earliest and best-known rolling-element bearings are sets of logs laid on the ground with a large stone block on top.

Plain bearing

A plain bearing, or more commonly sliding contact bearing and slide bearing (in railroading sometimes called a solid bearing, journal bearing, or friction bearing), is the simplest type of bearing, comprising just a bearing surface and no rolling elements. Therefore, the journal (i.e., the part of the shaft in contact with the bearing) slides over the bearing surface. The simplest example of a plain bearing is a shaft rotating in a hole. A simple linear bearing can be a pair of flat surfaces designed to allow motion; e.

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3D-Printed Gyroid Core Sandwich Composites

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