4.8 Article

In silico quantification of 3D thermal gradients and voids during fused filament fabrication deposition to enhance mechanical and dimensional stability

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Manufacturing

Implementation of viscosity and density models for improved numerical analysis of melt flow dynamics in the nozzle during extrusion-based additive manufacturing

Ases Akas Mishra et al.

Summary: The study aims to improve the assessment of melt flow behavior inside the nozzle by implementing viscosity and density models, and numerical simulations are conducted for different combinations of important process parameters to observe their relationship with print quality. The best combination of printing parameters is proposed for ABS and PLA materials, and extended stable zones for polymer melt deposition in the nozzle are obtained at specific extrusion velocities and temperatures.

PROGRESS IN ADDITIVE MANUFACTURING (2022)

Article Materials Science, Composites

Fused filament fabrication of copolyesters by understanding the balance of inter- and intra-layer welding

Ellen Fernandez et al.

Summary: This study explores the relationship between nozzle temperature, layer thickness, and mechanical performance of (co)polyesters in fused filament fabrication (FFF), aiming to diversify commercial materials for FFF. The findings demonstrate that increasing the layer height is beneficial for product mechanical performance with limited polymer degradation, while a lower layer height and higher nozzle temperature are needed when significant polymer degradation occurs. The study provides optimal FFF parameters for three commercial copolyesters and highlights the competition between inter- and intra-welding as a key microscopic material design strategy.

PLASTICS RUBBER AND COMPOSITES (2022)

Article Engineering, Manufacturing

Melt exit flow modelling and experimental validation for fused filament fabrication: From Newtonian to non-Newtonian effects

T. Van Waeleghem et al.

Summary: Fused filament fabrication (FFF) is an important additive manufacturing technique for producing complex polymeric parts. This study focuses on the flow behavior of polypropylene (PP) in FFF, and investigates the impact of processing and machine parameters on the viscoelastic exit flow. The study validates the suitability of the used model and emphasizes the importance of rheological data for understanding swelling and accurately simulating the deposition stage.

JOURNAL OF MANUFACTURING PROCESSES (2022)

Article Polymer Science

Exploiting mono- and hybrid nanocomposite materials for fused filament fabrication with acrylonitrile butadiene styrene as polymer matrix

Daniel V. A. Ceretti et al.

Summary: Acrylonitrile butadiene styrene (ABS) based polymeric composites containing graphene nanoplatelets (GNP's), multi-walled carbon nanotubes (CNT's), and titanium dioxide (TiO2) were studied for fused filament fabrication (FFF). The addition of all three nanoparticles resulted in improved dispersion and increased tensile modulus and strength of 3D printed ABS. Decreasing the layer thickness improved the mechanical properties, while printing temperature had minimal effect on the properties.

JOURNAL OF APPLIED POLYMER SCIENCE (2022)

Review Automation & Control Systems

Gaining a better understanding of the extrusion process in fused filament fabrication 3D printing: a review

Bahaa Shaqour et al.

Summary: Fused filament fabrication 3D printing technology shows great potential but the processability of materials may be a limiting factor. Recent research has focused on optimizing the process to ensure product quality and properties.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2021)

Article Engineering, Manufacturing

Modeling of bonding strength for Fused Filament Fabrication considering bonding interface evolution and molecular diffusion

Mengyuan Zhou et al.

Summary: Fused Filament Fabrication (FFF) is a widely used additive manufacturing technique, but suffers from poor mechanical properties due to weak bonding interface between strands. This study presents a theoretical model considering the evolution of bonding interface and molecular diffusion for predicting bonding strength, providing insights into the FFF bonding process. The model accurately establishes the relationship between process parameters and bonding strength parallel/perpendicular to deposition direction, with predictions agreeing well with experimental results and a low average root mean square error (RMS) of 5.52%.

JOURNAL OF MANUFACTURING PROCESSES (2021)

Article Computer Science, Interdisciplinary Applications

The Effect of a Phase Change on the Temperature Evolution during the Deposition Stage in Fused Filament Fabrication

Sidonie F. Costa et al.

Summary: The study aims to investigate the influence of phase change on heat transfer during the deposition stage of semi-crystalline polymers in FFF, and to assess the cooling differences between amorphous and semi-crystalline polymers.

COMPUTERS (2021)

Review Engineering, Manufacturing

Current status and future directions of fused filament fabrication

Sunpreet Singh et al.

JOURNAL OF MANUFACTURING PROCESSES (2020)

Article Engineering, Multidisciplinary

A numerical study of the effect of viscoelastic stresses in fused filament fabrication

Huanxiong Xia et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2019)

Article Thermodynamics

Simulations of fused filament fabrication using a front tracking method

Huanxiong Xia et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2019)

Proceedings Paper Engineering, Mechanical

Optimization of process parameters in fused filament fabrication (FFF) utilizing poly lactic acid (PLA)

H. Zakaria et al.

6TH INTERNATIONAL CONFERENCE ON APPLICATIONS AND DESIGN IN MECHANICAL ENGINEERING (2019)

Article Automation & Control Systems

Single print optimisation of fused filament fabrication parameters

Gabriel Pieter Greeff et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2018)

Article Engineering, Industrial

Estimation of filament temperature and adhesion development in fused deposition techniques

S. F. Costa et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2017)

Review Engineering, Mechanical

A review of melt extrusion additive manufacturing processes: I. Process design and modeling

Brian N. Turner et al.

RAPID PROTOTYPING JOURNAL (2014)

Article Materials Science, Characterization & Testing

Thermal conductivity behaviour of polymers around glass transition and crystalline melting temperatures

W. N. dos Santos et al.

POLYMER TESTING (2013)

Article Engineering, Multidisciplinary

Arbitrary Lagrangian Eulerian finite element analysis of free surface flow

H Braess et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2000)