Low-Velocity Impact Behavior of Sandwich Structures with Additively Manufactured Polymer Lattice Cores

Turner, Andrew; Rifaie, Mohammed Al; Mian, Ahsan; Srinivasan, Raghavan

doi:10.1007/s11665-018-3322-x

Cited by 32 publications

(21 citation statements)

References 8 publications

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“…The polymer 3DP technologies such as the extrusion-based fused deposition modeling (FDM) are being used to develop and design cellular or lattice structures. [6][7][8] The most popular polymer model material is acrylonitrile butadiene styrene (ABS) and is used in many of the inexpensive printers available in the market. ABS is primarily used to create prototypes as proof-of-concept of structural designs as reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Layer-to-layer physical characteristics and compression behavior of 3D printed polymer metastructures fabricated using different process parameters

Patibandla

Mian

2020

Journal of Elastomers & Plastics

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The extrusion-based three-dimensional printing technology such as fused deposition modeling (FDM) is the widely used one owing to its low cost. The FDM method can be used to fabricate parts with different fill densities, fill patterns, and process parameters such as extrusion temperature and print speed. In this research, influence of process parameters such as extrusion temperature and print speed on the physical characteristics such as the shape and the size of printed fibers in each layer, the fiber distance, and the fiber-to-fiber interface are investigated. In addition, their effects on mechanical characteristics of the printed samples are examined and interpreted with respect to the layer physical characteristics. To accomplish this, metastructure specimens were fabricated using acrylonitrile butadiene styrene polymer on a MakerBot 2X Replicator 3D printer. Three different extrusion temperatures (210, 230, and 250°C) and print speeds (100, 125, and 150 mm/s) were considered with an infill density of 50%. Optical microscopy was performed for layer physical characterization while the compression tests were done to evaluate the mechanical properties such as the failure strength, yield strength, and compressive modulus. It is observed that the print speed has minimal effect on mechanical properties; however, an improvement in mechanical properties is observed at higher fabrication temperature. Also, the lower fabrication temperature results in more uniform features within the layers as compared to those printed at higher extrusion temperature.

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Section: Introductionmentioning

confidence: 99%

Layer-to-layer physical characteristics and compression behavior of 3D printed polymer metastructures fabricated using different process parameters

Patibandla

Mian

2020

Journal of Elastomers & Plastics

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“…The parts were found to be light in weight and had high load-bearing capacity [11,12]. Additively manufactured composite sandwich structures were also found to have reduced weight and had high stiffness and load-bearing capacities [13,14]. Manufacturing parts with complex designs using fibers is specially more difficult.…”

Section: Introductionmentioning

confidence: 99%

“…Inkjet printed structures have shown shape recovery effects and better energy-absorption characteristics. Apart from Inkjet printing, FFF technique has also been used for fabricating facesheet with multiple orientations [14,20]. A study on the mechanical properties of fibers printed using FRTP technique proved that additively manufactured fibers are light in weight and have better load-bearing properties [15].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, additive manufacturing techniques can be used to fabricate sandwich structures that are light in weight and have high load-bearing and energy-absorption characteristics. However, only very few studies are performed on failure modes and damage mechanisms of such complex designs fabricated using AM techniques [13,14]. Mostly the fracture surface morphology is studied under electron microscope and high-speed camera [21] to identify the failure mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Quasi-static indentation analysis on three-dimensional printed continuous-fiber sandwich composites

Dikshit

Nagalingam

Goh

et al. 2019

Jnl of Sandwich Structures & Materials

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Fiber reinforced sandwich structures are widely used as structural elements due to their lightweight and high load-bearing capacity. In this paper, effort is taken to fabricate fiber facesheet (0°/90° orientation) and corrugated cores (trapezoidal vertical pillared, core-1 and sinusoidal vertical pillared, core-2) of the sandwich structure using fused filament fabrication and Inkjet printing techniques, respectively. Firstly, the quasi-static indentation properties of the additively manufactured facesheet, cores, and sandwich structures were investigated. In addition, acoustic emission signals were monitored during quasi-static indentation testing and the resulting hits data were correlated with quasi-static indentation test results. The quasi-static indentation test results showed that sinusoidal sandwich structures have the highest load-bearing capacity of 1.79 kN until crack initiation and a total energy-absorption capacity of 20.05 J. Acoustic emission hits recorded in the range of 1–30, 30–100, and above 100 represented crack initiation, crack propagation, and specimen failure, respectively. Lastly, micro-computed tomography analysis was performed on the sandwich structures at intermediate indentation displacements, thus leading to the identification of hard to detect failure points and damage propagation. Fracture surface morphology of the sandwich structures showed that fiber pullout and core shear were the dominant damage mechanisms.

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“…Other studies focused on the manufacture of parts using a direct laser-forming technique for the blades of a turbine or to X-band a horn with 3D printing [28], and even the refurbishment of parts outlining the benefits of laser cladding technology for in situ marine crankshaft repairs [29]. There were also articles dealing with the improvement of the properties of manufactured parts, and the elasticity of naval steels [30] on corrosion [31], even going as far as redesigning them for application in additive manufacturing [32].…”

Section: Analysis Of the Key Enabling Technologiesmentioning

confidence: 99%

Assessing Sustainability in the Shipbuilding Supply Chain 4.0: A Systematic Review

Ramírez-Peña

Fraga²,

Salguero

et al. 2020

Sustainability

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The supply chain is currently taking on a very important role in organizations seeking to improve the competitiveness and profitability of the company. Its transversal character mainly places it in an unbeatable position to achieve this role. This article, through a study of each of the key enabling technologies of Industry 4.0, aims to obtain a general overview of the current state of the art in shipbuilding adapted to these technologies. To do so, a systematic review of what the scientific community says is carried out, dividing each of the technologies into different categories. In addition, the global vision of countries interested in each of the enabling technologies is also studied. Both studies present a general vision to the companies of the concerns of the scientific community, thus encouraging research on the subject that is focused on the sustainability of the shipbuilding supply chain.

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Low-Velocity Impact Behavior of Sandwich Structures with Additively Manufactured Polymer Lattice Cores

Cited by 32 publications

References 8 publications

Layer-to-layer physical characteristics and compression behavior of 3D printed polymer metastructures fabricated using different process parameters

Layer-to-layer physical characteristics and compression behavior of 3D printed polymer metastructures fabricated using different process parameters

Quasi-static indentation analysis on three-dimensional printed continuous-fiber sandwich composites

Assessing Sustainability in the Shipbuilding Supply Chain 4.0: A Systematic Review

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