Article Dans Une Revue Additive Manufacturing Année : 2021

Vat photopolymerization of fly-like, complex micro-architectures with dissolvable supports

Résumé

Recent advances in additive manufacturing of complex geometries enabled the creation of mechanical metamaterials whose exotic properties are based on local control of complex cell geometries. Overhanging and free-hanging features that lack continuous support layers in the previous build volume cannot be directly manufactured, imposing a major design limitation. The resulting metamaterials are limited to single homogenous structural materials, and inherently selfsupporting geometries, resulting in constraints of achievable architectures. Realizing arbitrary features is compelling but is inherently limited by process and material support constraints. Here we present a novel light-based additive manufacturing approach capable of printing arbitrary micro-architectures comprising a large array of internally suspended features, large span overhang, and high aspect ratio struts. This method eliminates the need for manual removal of internal supports and enables a suite of multi-functional metamaterials with a range of designed properties, including wide bandgaps for elastic waves at low frequency, switchable wave transmissions, and products requiring no post support removal. We describe the synthesis and rapid printing of a variety of metamaterials comprising an extensive array of suspended features and demonstrate their metamaterial behaviors. The proposed approach removes scale and unit cell limitations and is capable of achieving embedded features across multiple materials.

Fichier principal
Vignette du fichier
Vat 210901_MD_V6_Final.pdf (3.55 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04981020 , version 1 (06-03-2025)

Licence

Identifiants

Citer

Zhenpeng Xu, Ryan Hensleigh, Nikhil Jrk Gerard, Huachen Cui, Mourad Oudich, et al.. Vat photopolymerization of fly-like, complex micro-architectures with dissolvable supports. Additive Manufacturing, 2021, 47, pp.102321. ⟨10.1016/j.addma.2021.102321⟩. ⟨hal-04981020⟩
47 Consultations
137 Téléchargements

Altmetric

Partager

  • More