From the same paper as the previous image.
Fig. 5 Photographs of 3D composite lattice core sandwich structures.
(a) A panel;
(b) a shell;
(c) a cylinder;
(d) double layer panels
This Figure is from [28]:
28. Yan, S., Zeng, T., Fang, D.N., etal.: Shear behavior of carbon/epoxy pyramidal truss sandwich panels. In: The 1st International Conference on Advanced Polymer and Polymer Composites. 13–15 July 2010, Harbin, China (2010)
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