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Article
Automation & Control Systems
Irina Bute et al.
Summary: This research evaluates, systematises, and analyses the four thermal characteristics of 3D printed products from the fourteen most common filaments. Thermomechanical analysis, differential scanning calorimetry, and thermal conductivity measurement methods were used. The results show that semi-crystalline polymers have a higher coefficient of thermal expansion than amorphous polymers. DSC study reveals that rapidly cooled semi-crystalline PLA materials have a non-equilibrium structure and low crystallinity, while annealing significantly increases their crystallinity degree.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Characterization & Testing
Lukasz Pejkowski et al.
Summary: Reinforcing materials in 3D printing is a common method to enhance mechanical properties. However, there is limited data on the rate-dependent behavior of 3D printed materials. This study provides information on the mechanical behavior of PA12 polyamide and its composites manufactured by filament deposition technology. The results show that strain rate has a significant effect, and reinforced materials exhibit improved mechanical properties, especially carbon fiber reinforced materials.
Article
Polymer Science
Feiyang He et al.
Summary: The present paper investigates the process parameters and damping behaviour of ABS cantilever beam manufactured using MEX. It uses an experimental approach to examine the interdependencies between process parameters and damping behavior. Statistical analysis and regression models are used to reveal significant dependencies and evaluate the findings. The obtained results show that infill density and nozzle size have a notable effect on damping behavior.
Article
Engineering, Mechanical
Tibor Barsi Palmic et al.
Summary: Fully 3D-printed smart structures have attracted a lot of research interest, with new technologies, materials, and methods being researched for functional structures such as sensors, actuators, generators, and batteries. This research introduces an analytical, electromechanical model for 3D-printed actuators, aiding in the identification of design principles and customization for specific dynamic applications.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Characterization & Testing
Antonella Sola et al.
Summary: 3D printing is becoming a key part of the Industry 4.0 revolution, but the lack of appropriate standards for polymer parts is hindering its widespread use in industry.
Article
Materials Science, Characterization & Testing
Ibrahim M. Alarifi
Summary: This research proposes a new method to simulate the failure of a 3D-printed engineering design. Fused deposition modeling (FDM) of PETG/CF material was used to develop and build the structure's topology, and the mechanical characteristics of the material were quantitatively linked to experimental results. The study demonstrates the use of FEA in 3D printing to evaluate the performance of a helmet chinstrap design under different production conditions, potentially reducing product design and development time.
Article
Engineering, Mechanical
Tamara Hanuhov et al.
Summary: The study investigates the thermo-mechanical response of multi-layered polymeric struts at different temperatures using moderate rotations theory, discussing the relationship between material properties and geometry, as well as analyzing the behavior of struts under different boundary conditions. Results show that temperature changes can cause bending in the struts, with the glass transition temperature influencing the direction of bending.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Chemistry, Physical
Bartosz Pszczolkowski et al.
Summary: This study compares three methods for determining the Young's modulus of PLA and ABS samples. The samples were manufactured using the FFF/FDM 3D printing technique and measurements were performed using the IET and US methods. The results were compared with those obtained from STT and showed similar changes in Young's modulus in response to processing temperatures. The US method generated values closer to STT results, but still had considerable divergence and errors exceeding 10% in all cases.
Article
Polymer Science
Daniela Fico et al.
Summary: Fused Filament Fabrication (FFF) is a promising additive manufacturing technique, but there are challenges in converting FFF-printed prototypes into functional objects for industrial applications. Scientists are focusing on developing biodegradable green materials to address the issue of waste disposal from non-biodegradable materials.
Article
Materials Science, Multidisciplinary
Matic Arh et al.
Summary: This research introduces a three axial piezoresistive accelerometer where the whole sensor, including highly conductive electrical paths, is printed in the same process of thermoplastic material extrusion. The design and manufacturing solutions researched for the triaxial accelerometer can be applied to other 3D-printed sensors, for example, force sensors and opens up the possibility of a single-process 3D-printed smart structure.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Mechanical
Roberto Torre et al.
Summary: Components fabricated via Fused Filament Fabrication (FFF) exhibit anisotropic response and mechanical property variation. This paper presents a method for characterizing and analyzing the mechanical behavior of linear infill FFF parts, filling the gap in standardized assessment of these components.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Alvaro Diaz-Garcia et al.
Summary: The design of functional composite filaments for fused filament fabrication requires appropriate polymer composition, functionality of particles, uniform distribution of fillers, and adequate printability. This study achieved uniform distribution by designing polymeric capsules as feedstock for extrusion. The functionality and concentration of fillers significantly affected the printing conditions, reducing the transition temperatures of the polymer and viscosity of the composites.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Characterization & Testing
Nectarios Vidakis et al.
Summary: In this study, three-dimensional printed polypropylene reinforced with aluminum oxide nanoparticles was developed and characterized. The addition of alumina nanoparticles significantly improved the mechanical properties of the composite, including tensile, flexural, and thermomechanical properties. This material shows great potential for various engineering applications where enhanced static and dynamic mechanical properties are required.
Article
Materials Science, Characterization & Testing
Francisco Medel et al.
Summary: This study analyzed various metrics derived from LDV characterization of 3D printed rectangular prisms and found that printing process parameters have a significant impact on the mechanical performance and interfilament bonding. LDV is a powerful technique in characterizing additively manufactured products and the derived metrics are attractive tools for research and industrial applications.
Article
Engineering, Manufacturing
Giulia Morettini et al.
Summary: The industrial interest in additive manufacturing techniques is increasing, and it is important to simulate the structural behavior of parts made using this technology. This study aims to determine the mechanical and physical properties of a specific material for the development of reliable finite element models for static and dynamic analysis.
PROGRESS IN ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Composites
Yuan Chen et al.
Summary: This study demonstrates the use of 3D printing via fused filament fabrication (FFF) to manufacture a dual-composite, planar-lattice base-platform structure for high precision optical or mechanical devices. The results show that using carbon-fiber reinforced polyamide materials with FFF technology can achieve a very good dimensional stability.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Daniel Moreno-Sanchez et al.
Summary: This study reports on a composite material based on ASA and BF, which, after surface modification of BF, can obtain materials with better mechanical properties and low CTE values, suitable for FFF technology to manufacture large objects.
Article
Engineering, Mechanical
Tibor Barsi Palmic et al.
Summary: This research demonstrates the first monolithic 3D-printed stacked dielectric actuators (SDEAs) using a commercially accessible extrusion 3D printer and thermoplastic filaments. The challenges of single-process fabrication of the dielectric layer and electrodes, repeatability and reliability of the 3D-printed thin dielectric layer, and layer stacking were successfully addressed. Four actuators with different active areas and stacked active layers were 3D printed and their functionality was demonstrated through dynamic electromechanical characterization. These actuators show promise for applications requiring high-frequency resonators or high controllability in the sub-resonance region.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Characterization & Testing
Sumodh Kumar et al.
Summary: This paper presents the development of polymer nanocomposite blends using multi-walled carbon nanotubes and highdensity polyethylene. The thermal stability and mechanical properties of the nanocomposite were tested, showing that the addition of carbon nanotubes improves the decomposition temperature and strength.
Article
Engineering, Multidisciplinary
Ali Zolfagharian et al.
Summary: This paper investigates the integration of non-assembly 3D-printed joints and soft robotic muscles to create a tendon-driven robotic finger. The study introduces a finger-type structure actuated by an electro-thermal soft actuator mechanism, which includes a bio-inspired 3D-printed compliant joint. The analysis uses the Euler-Lagrangian method and a transfer function based on an electro-thermo-mechanical model to examine the finger joints and their behavior. The simulation analysis provides insight into the influence of the electro-thermal muscle and spiral spring joint properties on finger motion. The suggested method has potential applications in various fields, including medicine and industry.
RESULTS IN ENGINEERING
(2022)
Review
Engineering, Environmental
Kirstie R. Ryan et al.
Summary: 4D printing is a developing field in additive manufacturing that utilizes time responsive programmable materials to create dynamic structures for a variety of applications. The use of multifunctional materials in 4D printing offers solutions for challenging environments where human intervention is not possible, such as outer space and extreme weather conditions. This technology has the potential to advance health monitoring, electrical devices, deployable structures, soft robotics, and tuneable metamaterials.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Robotics
Ye Tian et al.
Summary: This article provides a comprehensive review on recent progress of soft electrothermal actuators through five sections: device design, materials, properties, fabrication methods, applications, and prospects. It emphasizes the development towards increasing electrothermal efficiency and response speed, encouraging achievement of higher performance and broader applications in the future.
Article
Engineering, Mechanical
Yunzhi Huang et al.
Summary: The electromechanical coupling characteristics of a double-layer piezoelectric quasicrystal micro/nano-actuator were studied, with a focus on the effects of van der Waals force and Casimir force on phonon stress and displacement. The study also revealed that the phonon-phason coupling elastic coefficient and nonlocal scale parameter have positive and negative effects on static responses.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Gareth Chapman et al.
Summary: This research focuses on improving the printability of nylon 6 through modification and optimization, resulting in the successful printing of complex-shaped and high-strength nylon 6-based blends. The modified nylon shows significantly increased complex viscosity and impact strength, with voids observed on the fractured surface contributing to the production of lightweight 3D printed specimens.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Polymer Science
Jessica L. Faust et al.
Summary: The study explored the effects of environmental factors on the dimensional accuracy of 3D printed parts, focusing on the thermal expansion coefficients of nylon materials and the impact of moisture uptake. It found that nylon reinforced with discontinuous carbon fiber exhibited high anisotropy, while continuous fiber reinforcement throughout the part significantly reduced the effects of moisture.
Article
Nanoscience & Nanotechnology
Xufeng Cao et al.
Summary: A 3D printing strategy based on magneto-active materials was developed to manufacture various biomimetic magnetic actuators, demonstrating continuous shape transformations imitating motion characteristics of creatures. The biomimetic actuator based on soft magneto-active materials has programmable integrated structure, rapid prototyping, remote noncontact actuation, and rapid magnetic response advantages, showing broad application prospects in soft robotics and other fields.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Materials Science, Composites
M. Ahmadifar et al.
Summary: This review paper provides recent developments in the Fused Filament Fabrication (FFF) approach for composite materials, focusing on influencing parameters and their impact on the strength/bonding or physicochemical characterizations of FFF-fabricated parts. An overview of the mechanical properties of printed parts for different composite material systems is presented and discussed. The study considers three types of reinforced polymers in FFF process: filled reinforced polymers, continuous fiber-reinforced polymers, and short fiber reinforced polymers.
APPLIED COMPOSITE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Francisco Medel et al.
Summary: In this study, laser-scanning vibrometry (LSV) was explored for evaluating the mechanical behavior of 3D printed parts. LSV proved to be effective in discriminating the mechanical behavior of specimens fabricated with different process parameters. Multivariate regression models identified significant influences of raster angle, build orientation, and nozzle temperature on the equivalent elastic modulus.
MATERIALS & DESIGN
(2021)
Review
Automation & Control Systems
Yuyang Ji et al.
Summary: This article provides a comprehensive overview of the latest progress in smart structures, emphasizing the importance of 3D printing methods in this field and outlining the direction of future development, including temperature- and electromagnetic-responsive smart structures as well as self-healing and smart-sensing devices.
ADVANCED INTELLIGENT SYSTEMS
(2021)
Article
Materials Science, Multidisciplinary
Mohamed Amine Aouraghe et al.
Summary: In this study, a low-voltage activating, fast responding electro-thermal actuator (ETA) was constructed using carbon nanotube film (CNTF) and polydimethylsiloxane (PDMS), with the influences of PDMS thickness and driving voltage on performance systematically investigated. The CNTF/PDMS composite ETA showed potential in soft robotics with its capability to lift 5.1 times and crab 1.3 times of its weight.
ADVANCED FIBER MATERIALS
(2021)
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Review
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(2020)
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(2020)
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
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Enrique Cuan-Urquizo et al.
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Gholamhossein Sodeifian et al.
RESULTS IN PHYSICS
(2019)
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Charoula Kousiatza et al.
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(2019)
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ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
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Zhaobing Liu et al.
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(2019)
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SENSORS AND ACTUATORS A-PHYSICAL
(2019)
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Yu-Chen Sun et al.
SCIENTIFIC REPORTS
(2019)
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(2019)
Review
Nanoscience & Nanotechnology
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NATURE REVIEWS MATERIALS
(2019)
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BIOINSPIRATION & BIOMIMETICS
(2019)
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(2015)
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EXPERIMENTAL MECHANICS
(2011)
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Nick McCormick et al.
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A. Labuschagne et al.
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(2009)
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