Journal ArticleDOI
Triply periodic minimal surfaces sandwich structures subjected to shock impact
Phuong Tran,Chenxi Peng +1 more
TLDR
Triply periodic minimal surfaces as discussed by the authors are cellular structures that naturally inspired continuous non-self-intersecting surfaces similar to bone microstructure with controllable mechanical properties, which are called 3-minimal surfaces.Abstract:
Triply periodic minimal surfaces are cellular structures that naturally inspired continuous non-self-intersecting surfaces similar to bone microstructure with controllable mechanical properties. In...read more
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Additive manufacturing
TL;DR: Marshall has unique expertise in leveraging new digital tools, 3D printing, and other advanced manufacturing technologies and applying them to propulsion systems design and other aerospace materials to meet NASA mission and industry needs.
Journal ArticleDOI
FDM-Based 3D Printing of Polymer and Associated Composite: A Review on Mechanical Properties, Defects and Treatments.
TL;DR: The most common defects on printed parts, in particular the void formation, surface roughness and poor bonding between fibre and matrix, are explored and an inclusive discussion on the effectiveness of chemical, laser, heat and ultrasound treatments to minimize these drawbacks is provided.
Journal ArticleDOI
Biomimicry for 3D concrete printing: A review and perspective
Anton du Plessis,Anton du Plessis,Adewumi John Babafemi,Suvash Chandra Paul,Biranchi Panda,Jonathan Phuong Tran,Chris Broeckhoven +6 more
TL;DR: In this article, a review of bio-inspired 3D printed concrete structures with unique properties is presented, and the latent potential of combining bio-inspiration with 3D concrete printing is demonstrated.
Journal ArticleDOI
3D printed sandwich beams with bioinspired cores: Mechanical performance and modelling
TL;DR: In this article, a 3D-printing technique, experiments, theoretical formulation and numerical simulation are combined to investigate a novel class of lightweight sandwich structures with TPMS cores, and a numerical model is developed to analyse the behaviours of the sandwich structures under bending loading.
Journal ArticleDOI
3D Printing of polymer composites with material jetting: Mechanical and fractographic analysis
TL;DR: In this article, the authors investigated the mechanical properties of 3D printed polymeric composites with different compositions and arrangements of reinforced particles and found that hard particles strengthen the part, but soft particles serve as a crack initiation site.
References
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Journal ArticleDOI
Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures
TL;DR: In this paper, a cumulative-damage fracture model is introduced which expresses the strain to fracture as a function of the strain rate, temperature and pressure, and the model is evaluated by comparing computed results with cylinder impact tests and biaxial (torsion-tension) tests.
Journal ArticleDOI
The properties of foams and lattices.
TL;DR: This paper summarizes a little of the way in which the mechanical properties of cellular solids are analysed and illustrates the range of properties offered by alternative configurations.
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Foam topology bending versus stretching dominated architectures
TL;DR: In this paper, the authors investigated the topological criteria that dictate the deformation mechanism of a cellular solid by analysing the rigidity (or otherwise) of pin-jointed frameworks comprising inextensional struts.
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The Resistance of Clamped Sandwich Beams to Shock Loading
Norman A. Fleck,Vikram Deshpande +1 more
TL;DR: In this article, the structural response of the sandwich beam is split into three sequential steps: stage I is the one-dimensional fluid-structure interaction problem during the blast loading event, and results in a uniform velocity of the outer face sheet; during stage II the core crushes and the velocities of the faces and core become equalized by momentum sharing; stage III is the retardation phase over which the beam is brought to rest by plastic bending and stretching.