Improvement and Evaluation of the Interlaminar Bonding Strength of FDM Parts by Atmospheric-Pressure Plasma

Narahara, Hiroyuki; Shirahama, Yota; Koresawa, Hiroshi

doi:10.1016/j.procir.2016.02.314

Cited by 23 publications

(7 citation statements)

References 2 publications

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“…More importantly, the improvement effect on product quality is limited due to the small allowed range of these values. Narahara et al (2016) used the atmospheric pressure plasma to carry out the hydrophilic treatment to the FFF 3D printing layer, the results showed that it can effectively improve the inter-layer bonding strength of the built parts (nearly by 15 per cent), and thereby improve the mechanical properties. However, this method is too costly and energy-consuming, as well as increasing the parts’ surface roughness.…”

Section: Introductionmentioning

confidence: 99%

Improving the forming quality of fused filament fabrication parts by applied vibration

Jiang

Siyajeu

Shi

et al. 2020

RPJ

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Purpose The purpose of this study is to investigate the efficiency of applied vibration in improving the forming quality (mechanical property and dynamics characteristics) of fused filament fabrication (FFF) parts. Design/methodology/approach A vibrating FFF three-dimensional printer was set up, with which the samples fabricated in different directions were manufactured separately without and with vibration applied. A series of experimental tests, including tensile tests, dynamics tests and scanning electron microscopy (SEM) tests, were performed on these samples to experimentally quantify the effect of applied vibration on their forming quality. Findings It has been found that the applied vibration can significantly increase the tensile strength and plasticity of the samples built in Z-direction, and obviously decrease the orthogonal anisotropy. It can also significantly change the sample’s natural frequency, decrease the resonant response and increase the modal damping ratio, thus improve the anti-vibration capability of FFF samples. In addition, the SEM analysis confirmed that applying vibration into FFF process could improve the forming quality of the fabricated part. Research limitations/implications Future research may be focused on investigating the efficiency of applied vibration in improving the forming quality of parts fabricated by the other additive manufacturing techniques. Practical implications This study helps to improve the reliability of FFF parts and extend the application range of FFF technology. Originality/value A novel method to improve the forming quality of FFF parts is provided and the available information about the performance of dynamics characteristics.

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Section: Introductionmentioning

confidence: 99%

Improving the forming quality of fused filament fabrication parts by applied vibration

Jiang

Siyajeu

Shi

et al. 2020

RPJ

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“…This work seeks to quantify the intra-layer structural and thermal performance of the deposited bead. The inter-layer performance is another significant consideration, and there are a variety of authors who have presented methods to improve the inter-layer bonding strength such as tamping (see e.g., [2,3]), infrared preheating (see e.g., [4]), and plasma treating (see e.g., [5]). …”

Section: Introductionmentioning

confidence: 99%

Prediction of the Fiber Orientation State and the Resulting Structural and Thermal Properties of Fiber Reinforced Additive Manufactured Composites Fabricated Using the Big Area Additive Manufacturing Process

et al. 2018

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Recent advances in Fused Filament Fabrication (FFF) include large material deposition rates and the addition of chopped carbon fibers to the filament feedstock. During processing, the flow field within the polymer melt orients the fiber suspension, which is important to quantify as the underlying fiber orientation influences the mechanical and thermal properties. This paper investigates the correlation between processing conditions and the resulting locally varying thermal-structural properties that dictate both the final part performance and part dimensionality. The flow domain includes both the confined and unconfined flow indicative of the extruder nozzle within the FFF deposition process. The resulting orientation is obtained through two different isotropic rotary diffusion models, the model by Folgar and Tucker and that of Wang et al., and a comparison is made to demonstrate the sensitivity of the deposited bead's spatially varying orientation as well as the final processed part's thermal-structural performance. The results indicate the sensitivity of the final part behavior is quite sensitive to the choice of the slowness parameter in the Wang et al. model. Results also show the need, albeit less than that of the choice of fiber interaction model, to include the extrudate swell and deposition within the flow domain.

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“…During the past few years, extensive research has been carried out in studying various quality characteristics of ME products, such as mechanical property (Hwang et al , 2015; Torres et al , 2015; Maleksaeedi et al , 2014; Es-Said et al , 2000; Tsouknidas et al , 2016), surface roughness (Durgun and Ertan, 2014; Boschetto et al , 2016; Lalehpour and Barari, 2018; Turner and Gold, 2015), build quality (Gordeev et al , 2018; Mengqi and Bourell, 2016; Caminero et al , 2018; Narahara et al , 2016) and dimensional quality (Boschetto and Bottini, 2016; Pruc and Vietor, 2015; Han and Yaoyao Fiona, 2016). However, there has been no systematic study in the literature on understanding and characterization of dynamic performances for ME parts.…”

Section: Introductionmentioning

confidence: 99%

A dynamic model of laminated material extrusion additive manufacturing plate with the property of orthogonal anisotropy

Jiang

Sun

Zhan³

et al. 2021

RPJ

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Purpose The purpose of this study is to set up a dynamic model of material extrusion (ME) additive manufacturing plates for the prediction of their dynamic behavior (i.e. dynamic inherent characteristic, resonant response and damping) and also carry out its experimental validation and sensitivity analysis. Design/methodology/approach Based on the classical laminated plate theory, a dynamic model is established using the orthogonal polynomials method, taking into account the effect of lamination and orthogonal anisotropy. The dynamic inherent characteristics of the ME plate are worked out by Ritz method. The frequency-domain dynamic equations are then derived to solve the plates’ resonant responses, with which the damping ratio is figured out according to the half-power bandwidth method. Subsequently, a series of experimental tests are performed on the ME samples to obtain the measured data. Findings It is shown that the predictions and measurements in terms of dynamic behavior are in good agreement, validating the accuracy of the developed model. In addition, sensitivity analysis shows that increasing the elastic modulus or Poisson’s ratio will increase the corresponding natural frequency of the ME plate but decrease the resonant response. When the density is increased, both the natural frequency and resonant response will be decreased. Research limitations/implications Future research can be focused on using the proposed model to investigate the effect of processing parameters on the ME parts’ dynamic behavior. Practical implications This study shows theoretical basis and technical insight into improving the forming quality and reliability of the ME parts. Originality/value A novel reliable dynamic model is set up to provide theoretical basis and principle to reveal the physical phenomena and mechanism of ME parts.

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Improvement and Evaluation of the Interlaminar Bonding Strength of FDM Parts by Atmospheric-Pressure Plasma

Cited by 23 publications

References 2 publications

Improving the forming quality of fused filament fabrication parts by applied vibration

Improving the forming quality of fused filament fabrication parts by applied vibration

Prediction of the Fiber Orientation State and the Resulting Structural and Thermal Properties of Fiber Reinforced Additive Manufactured Composites Fabricated Using the Big Area Additive Manufacturing Process

A dynamic model of laminated material extrusion additive manufacturing plate with the property of orthogonal anisotropy

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