Low-velocity impact response of 3D-printed lattice structure with foam reinforcement

Kao, Yi-Tang; Amin, Anish Ravindra; Payne, Nolan; Wang, Jyhwen; Tai, Bruce L.

doi:10.1016/j.compstruct.2018.02.042

Cited by 57 publications

(16 citation statements)

References 23 publications

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“…This means that they needed more energy to break and these energy absorptions of the samples were high compared to the others. This confirmed that the foam reinforcements with good viscoelastic properties can aid more energy dissipation and crack stabilization [35].…”

Section: Effect Of Print Parameters On Impact Propertiessupporting

confidence: 56%

“…The impact behaviour is also explored on foam reinforced 3D printed plastics. Kao et al [35] tested foam reinforced 3D printed lattice structures to explore the effects on PLA material by evaluating the toughness, stiffness, jerk, displacement, energy absorption and the maximum acceleration in the structure. This type of material is called Bi-material structure (BMS) in which a 3D printed lattice was filled with a reinforcement material like foam.…”

Section: Effect Of Print Parameters On Impact Propertiesmentioning

confidence: 99%

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Extperimental Characterization of 3D Printed Thermoplastic Plates Subjected To Low Velocity Impact

Desu¹

2021

Preprint

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Poly Lactic Acid (PLA) is a biodegradable material which is being extensively used in industrial applications. Due to its low glass transition temperature and cost, PLA is ideal as a feed stock in 3D printing applications. However, it has a brittle nature which makes it vulnerable to impact loads. In this paper, PLA is used to make 3D printed plates that are impact tested using an in-house low velocity impact test apparatus. A high-speed camera and an infrared thermography system are used to investigate the impact damage properties of the material. The plates manufactured with 0° orientation are used to conduct two different experiments; one with varying energies and the other with varying thickness at two different impact locations, namely at plate’s centre and close to a clamped edge. At 1 J impact energy, the plates showed a tensile crack behaviour (cracks between extrudates) and for 3 J energy it showed a mixed crack behaviour of tensile and shear (cracks along and across extrudates) with more energy dissipations than the 1 J impact. For the 1 J impact, more energy is dissipated at the centre of the plate (42.3%) than the impact close to a clamped edge (32.8%), whereas for the 3 J impact more energy is dissipated near clamped edges (97.1%) compared to the centre of the plate (54.9%). Subsequently, the 3 J impact is used for the second experiment due to the higher energy dissipation. Finally, an experimental study is conducted on plates with varied layer thickness from 0.10 mm to 0.18 mm. Results show that the increase in layer thickness (decrease in number of layers) increases the impact absorption for plates impacted at their centre. For plates impacted near their clamped edge, a zig-zag impact damage pattern of increasing and decreasing magnitudes is observed, but the energy dissipation values are higher than the centre impacted plates.

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Section: Effect Of Print Parameters On Impact Propertiessupporting

confidence: 56%

Section: Effect Of Print Parameters On Impact Propertiesmentioning

confidence: 99%

Extperimental Characterization of 3D Printed Thermoplastic Plates Subjected To Low Velocity Impact

Desu¹

2021

Preprint

View full text Add to dashboard Cite

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“…With the quick development of 3D printing and additive manufacturing techniques [46], new technological solutions which were not possible a few years ago can now be considered, like on-demand geometries of multi-materials structures and microstructures. More specifically, 3D printed bi-materials [7,[30][31][32]63] offer new exciting possibilities such as designing composites with non-trivial periodic microstructures and ad-hoc functionalities. Among them, particle-matrix or skeleton-filled matrix composites able to increase the fracture resistance as compared to existing composites is of industrial and technological critical importance, for applications in aircraft, automotive or biomechanics, among many others.…”

Section: Introductionmentioning

confidence: 99%

A SIMP-phase field topology optimization framework to maximize quasi-brittle fracture resistance of 2D and 3D composites

Yvonnet

2021

Theoretical and Applied Fracture Mechanics

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We investigate the use of combining SIMP topology optimization and phase field method to fracture for maximizing the fracture resistance of a structure composed of two materials. The optimization problem is formulated with respect to maximizing the external work under the constraint of inclusion volume fraction. The performance and convergence of the proposed algorithm are investigated. It is shown that the fracture resistance can be improved as compared to several guess designs with the same volume fraction of reinforcement (inclusion material). A comparison between the present SIMP and BESO methods is performed, showing a better convergence of the SIMP method, more specifically when a homogeneous initial guess design is used. Applications to 2D and 3D composite structure are presented to show the potential and robustness of the approach.

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“…Studies by Yazdani Sarvestani et al (2018) have proven that metasandwich isomax structures have a high quasi-static and dynamic ability to absorb impact energy. Kao et al (2018) determined the impact strength of a lattice beam filled with foam made of biocomposites (polylactide PLA). The foam has a positive effect on the structure's mechanical properties by increasing the system's absorption energy.…”

Section: Introductionmentioning

confidence: 99%

Compression and low velocity impact response of wood-based sandwich panels with auxetic lattice core

2021

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The research determined the resistance to compression and low velocity impact of wood-based sandwich panels, the face sheet made of high-density fiber board, and high pressure laminate, while its auxetic lattice core was made by 3D printing using LayWood bio-composite filament. The core's auxetic property (i.e. exhibiting negative Poisson's ratio) was observed within the planes parallel to the facings. The ability of particular types of multilayer panels to absorb the energy was also determined. Based on the analysis of the obtained test results, it was proven that the core denoted as B, with inclination angle of the cell ribs $${{\varphi }_{x}=\varphi }_{y}=65^\circ$$ φ x = φ y = 65 ∘ , shows the highest compressive strength. It was determined that the dynamic load causes a very high overload in high-density fiber board face sheets. This results in damage to the sandwich panel surface and core structure. Cells of type B favorably minimize the differences in absorbed energy when using different face sheets and the energy value for low velocity impact. Taking into account the amount of absorbed energy, the most attractive is the panel with the D-type orthotropic core characterized by an inclination angle of the cell ribs $${\varphi }_{x}= 30^\circ , {\varphi }_{y}=60^\circ$$ φ x = 30 ∘ , φ y = 60 ∘ . The amount of energy absorbed by samples with high-density fiberboard face sheets increases significantly depending on the impactor's energy. For panels with face sheets manufactured from high-pressure laminate, the amount of energy absorbed decreases.

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Low-velocity impact response of 3D-printed lattice structure with foam reinforcement

Cited by 57 publications

References 23 publications

Extperimental Characterization of 3D Printed Thermoplastic Plates Subjected To Low Velocity Impact

Extperimental Characterization of 3D Printed Thermoplastic Plates Subjected To Low Velocity Impact

A SIMP-phase field topology optimization framework to maximize quasi-brittle fracture resistance of 2D and 3D composites

Compression and low velocity impact response of wood-based sandwich panels with auxetic lattice core

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