Stiffness and damping behavior of 3D printed specimens

Medel, Francisco; Abad, J.; Esteban, Victor

doi:10.1016/j.polymertesting.2022.107529

Cited by 23 publications

(9 citation statements)

References 63 publications

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“…Moreover, Francisco Medel et al assessed the damping ratios for 3D-printed polylactic acid (PLA) beam produced with various parameters (build orientation, nozzle temperature, layer height, print speed and raster angle). The research confirmed the association between high damping and poor inter-filament bonding [ 33 ].…”

Section: Introductionsupporting

confidence: 71%

“…Most of them followed the ASTM standards to measure the MEX structure’s tensile strength and concluded that a higher infill density yielded a higher strength. Meanwhile, only two studies [ 32 , 33 ] investigated the damping behaviours of the MEX structure. Only one study [ 33 ] tested the influence of the raster angle on the modal damping ratios.…”

Section: Resultsmentioning

confidence: 99%

“…Meanwhile, only two studies [ 32 , 33 ] investigated the damping behaviours of the MEX structure. Only one study [ 33 ] tested the influence of the raster angle on the modal damping ratios. Therefore, very few previous methods and conclusions are available for comparison.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…This study carried out the impact test for specimens with a cantilever beam structure, which was the same as the method in [ 33 ]. However, interestingly, the modal damping ratio exhibited an opposite tendency with different raster angles when comparing our results with [ 33 ]. This study suggested a reduced value with an increased raster angle, but an increasing trend was observed when increasing the raster angle in [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Effect of 3D Printing Process Parameters on Damping Characteristic of Cantilever Beams Fabricated Using Material Extrusion

Ning

Khan

2023

Polymers

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The present paper aims to investigate the process parameters and damping behaviour of the acrylonitrile butadiene styrene (ABS) cantilever beam manufactured using material extrusion (MEX). The research outcome could guide the manufacture of MEX structures to suit specific operating scenarios such as energy absorption and artificially controlled vibration responses. Our research used an experimental approach to examine the interdependencies between process parameters (nozzle size, infill density and pattern) and the damping behaviour (first-order modal damping ratio and loss factor). The impact test was carried out to obtain the damping ratio from the accelerometer. A dynamic mechanical analysis was performed for the loss factor measurement. The paper used statistical analysis to reveal significant dependencies between the process parameters and the damping behaviour. The regression models were also utilised to evaluate the mentioned statistical findings. The multiple third-order polynomials were developed to represent the relation between process parameters and modal damping ratio using stiffness as the mediation variable. The obtained results showed that the infill density affected the damping behaviour significantly. Higher infill density yielded a lower damping ratio. Nozzle size also showed a notable effect on damping. A high damping ratio was observed at a significantly low value of nozzle size. The results were confirmed using the theoretical analysis based on the underlying causes due to porosity in the MEX structure.

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Section: Introductionsupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Effect of 3D Printing Process Parameters on Damping Characteristic of Cantilever Beams Fabricated Using Material Extrusion

Ning

Khan

2023

Polymers

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Frequency and deflection responses of 3D‐printed carbon fiber reinforced polylactic acid composites: Theoretical and experimental verification

Kannan,

Manapaya,

Selvaraj

2023

Polymer Composites

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In the present study, the vibration and bending characteristics of carbon fiber reinforced 3D printed composites have been investigated using first order shear deformation theory (FSDT). The elastic properties of 3D printed carbon fiber reinforced polylactic acid (PLA) material were examined using the ASTM D638 standard test. From the tested specimens, the fractured surfaces were observed for bonding between layers, fiber‐matrix interfaces, and failures using a field emission scanning electron microscope. The experimental vibration analysis was performed on with and without carbon fiber reinforced 3D printed composites to predict natural frequencies under different boundary conditions. The experimental results is compared with finite element analysis in terms of natural frequencies, and it shows very good agreement for 3D printed composites. Furthermore, parametric analysis is performed to explore the influence of end conditions and aspect ratios on the vibration and bending characteristics of 3D printed carbon fiber reinforced composites.

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An experimental and numerical effort on the vibration behavior of additively manufactured recycled polyethylene terephthalate glycol components

Bolat,

Çebi,

Maraş

et al. 2024

Polymer Engineering & Sci

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The importance of recycling engineering components and thus obtaining low‐cost production solutions has become prominent in today's world. In this study, the mechanical and dynamic behaviors of three‐dimensional‐printed recycled polyethylene terephthalate glycol (RePET‐G) beams were investigated numerically and experimentally for the first time in the literature. Initially, the governing equations of the beams were determined according to the Bernoulli–Euler beam theory, and these equations were numerically solved using the differential quadrature method and ANSYS program. Subsequently, to validate the accuracy of the numerical models, the obtained natural frequencies were compared with experimental results. It was observed that the numerical results showed good agreement with the experimental results. Finally, the effects of beam length, infill rate, and building direction on the natural frequencies of RePET‐G beams were investigated. The outcomes showed that as the beam length changed, natural frequencies were significantly affected. Increasing the infill rate, especially for beams with vertical building direction, from 20% to 100% led to a slight decrease in the natural frequency values of the structure. Moreover, it was found that for beams with an infill rate of 100%, the natural frequency values obtained in the horizontal building direction were higher than those obtained in the vertical building direction.Highlights Printable recycled filaments have great potential for vibration applications. Sample length affects the first natural frequency value of RePETG parts. Differential quadrature and ANSYS methods can be utilized for the vibration. For the 3D‐printed samples, rising infill rate causes a natural frequency drop.

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Stiffness and damping behavior of 3D printed specimens

Cited by 23 publications

References 63 publications

Effect of 3D Printing Process Parameters on Damping Characteristic of Cantilever Beams Fabricated Using Material Extrusion

Effect of 3D Printing Process Parameters on Damping Characteristic of Cantilever Beams Fabricated Using Material Extrusion

Frequency and deflection responses of 3D‐printed carbon fiber reinforced polylactic acid composites: Theoretical and experimental verification

An experimental and numerical effort on the vibration behavior of additively manufactured recycled polyethylene terephthalate glycol components

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