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Experimental Study of the Behaviour of Sla Sandwich Panels with Different Micro Lattice Structures under Repeated Loading

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Abstract:

Sandwich panels are widely used in engineering applications due to their advantageous combination of lightweight and high strength. However, their long-term mechanical performance under repeated loading highly depends on the internal lattice structure. This study experimentally investigates the behavior of SLA-manufactured sandwich panels with different lattice geometries under cyclic loading conditions. Various lattice configurations were designed and subjected to repeated compressive loads while monitoring stress relaxation and mechanical deformation over time. The results demonstrate that lattice geometry significantly affects load-bearing capacity and energy dissipation. Notably, structures incorporating vertical support members exhibited higher energy absorption, whereas those without vertical supports, such as M4 and M5, showed improved resistance to stress relaxation over multiple cycles. Furthermore, while all specimens experienced load reductions after 25 cycles, the magnitude of these reductions varied based on the lattice configuration, with M3 exhibiting the highest load decay. These findings contribute to optimizing lattice-based sandwich structures for enhanced durability and mechanical efficiency in engineering applications.

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Periodical:

Advances in Science and Technology (Volume 171)

Pages:

51-57

DOI:

https://doi.org/10.4028/p-BnvV6Y

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Online since:

December 2025

Authors:

Kubilay Aslantas, Waleed Ahmed*

Keywords:

Lattice Structure, Repeated Loading, Sandwich Panel, SLA, Stress Relaxation

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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