检索结果-内蒙古大学图书馆

Effects of rCF attributes and FDM-3D printing parameters on the mechanical properties of rCFRP

COMPOSITES PART B-ENGINEERING 2024年 270卷

作者： Cheng, Huanbo Tang, Mingxi Zhang, Jie Wang, Huafeng Zhou, Jinhu Wang, Qingze Qian, Zhengchun Nanjing Inst Technol Sch Mech Engn Nanjing 211167 Jiangsu Peoples R China

In order to realize high-quality and environment-friendly recycling of carbon fiber reinforced composite (CFRP) waste and high-value reuse of recycled carbon fiber (rCF), this paper proposes an additive remanufacturing process of recycled carbon fiber reinforced composite (rCFRP). The material attribute of rCF recycled by the thermally activated oxide semiconductor was analyzed and the effect of fused deposition modeling-3D (FDM-3D) printing parameters on mechanical properties of rCFRP was investigated, and FDM-3D printed rCFRP products for automotive were prepared. The results illustrate that rCF possesses the same excellent material attribute as the virgin carbon fiber, and optimizing FDM-3D printing parameters can effectively improve the mechanical properties of rCFRP. FDM-3D printed rCFRP products are of promising application in the field of automotive lightweighting due to its characteristics of personalized customization and low cost, which verifies the feasibility of the additive remanufacturing process mentioned above.

关键词： Recycled carbon fiber Composite Additive manufacturing printing parameters Mechanical property

来源：评论

学校读者我要写书评

暂无评论

Effect of printing parameters on mechanical properties of extrusion-based additively manufactured ceramic parts

引用

CERAMICS INTERNATIONAL 2021年第9期47卷 12189-12198页

作者： Rane, Kedarnath Farid, Muhammad Asad Hassan, Waqar Strano, Matteo Politecn Milan Dipartimento Meccan Via La Masa 1 Milan Italy

The purpose of this study is to investigate the effect of printing parameters on the physical and mechanical properties of additively manufactured ceramics (alumina and zirconia). Sample parts were obtained by extrusion-based additive manufacturing of a ceramic-binder mixture and subsequent post-processing (debinding and sintering). Their mechanical properties (microhardness, flexural strength, toughness) were measured and correlated with the printing parameters. Part orientation is the most significant factor for microhardness and flexural strength in both ceramic materials. Parts with vertical orientation show higher hardness while horizontal samples show higher flexural strength compared to their respective counterparts. Extrusion velocity was found to be insignificant for hardness and flexural strength. However, a marginal increase in fracture toughness with the increase in the extrusion velocity was observed. The fracture toughness of additively manufactured ceramics shows an increasing trend with elastic modulus and flexural strength and a decreasing trend with hardness and sintered density.

关键词： Alumina Zirconia printing parameters Sintering Fracture toughness

来源：评论

学校读者我要写书评

暂无评论

Influence of printing parameters on the thermal properties of 3D-printed construction structures

引用

ENERGY 2024年 305卷

作者： Sovetova, Meruyert Calautit, John Kaiser Univ Nottingham Fac Engn Nottingham England

3D printing in the construction sector is a promising, sustainable approach with the potential to build energyefficient buildings. However, there is a lack of studies on the thermal properties of 3D-printed structures, which are fundamental to their energy efficiency. This study investigates the impact of printing parameters on thermal conductivity and defect development in 3D-printed concrete structures. Heat flow meter, scanning electron microscope and infrared imaging techniques were employed to assess the thermal properties and microstructure of 3D-printed samples. The results demonstrate that printing parameters significantly influence the porosity, void formation, and microstructural characteristics of 3D-printed concrete, ultimately affecting thermal properties. An increase in extrusion rate leads to higher thermal conductivity, whereas an increase in speed and standoff distance reduces thermal conductivity. Excessive spacing between printed lines can induce voids and gaps, contributing to lower thermal conductivity, while minimal spacing can promote higher porosity and larger pores. Infrared imaging revealed nonuniform thermal distribution in 3D-printed structures caused by the layered structure and voids in interlayer gaps. This study provides valuable insights for designing and constructing energy-efficient 3D-printed buildings, contributing to the development of sustainable building practices and the advancement of additive manufacturing in construction.

关键词： 3D printed concrete Thermal properties printing parameters Pore structure Energy-efficient structure Material extrusion Heat flow meter SEM Infrared thermal imaging

来源：评论

学校读者我要写书评

暂无评论

An overview of the latest research on the impact of 3D printing parameters on shape memory polymers

引用

EUROPEAN POLYMER JOURNAL 2023年第1期194卷

作者： Ameen, Ahmed A. Takhakh, Ayad M. Abdal-hay, Abdalla Al Nahrain Univ Coll Engn Dept Mech Engn Dept Baghdad Iraq New Cairo Technol Univ Fac Ind & Energy Technol Mechatron Technol Program New Cairo Fifth Settlemen New Cairo 11835 Egypt South Valley Univ Fac Engn Dept Engn Mat & Mech Design Qena 83523 Egypt Univ Queensland Oral Hlth Ctr Herston Sch Dent 288 Herston Rd Herston Qld 4006 Australia

During the last few years, smart materials like shape-memory polymers (SMPs) have attracted great attention from manufacturers and researchers due to their ease of formability and functionality. One of the most recent advanced techniques for manufacturing SMPs to create recoverable objects is additive manufacturing (3D printing). The factors that should be considered when printing 3D SMPs include the type of 3D printer being used, the temperature and humidity of the printing environment, and the properties of the shape memory polymer material. Other important parameters include the speed of the printing, the layer thickness, and the size and shape of the object being printed. Another aspect is the infill structure design, which could be regulated to agree with application requirements and achieve feasibility of these polymers. The most famous shapes are honeycomb, gyroid, and triangles. By carefully controlling these parameters, it is possible to achieve high-quality results when 3D printing with SMPs. Infill structure design, such as honeycomb, gyroid, and triangles, can also affect the mechanical characteristics of SMPs, including tensile, bending, and compression strength, as well as shape memory properties such as shape recovery and fixity ratios, and recovery time. Our review comprehensively discusses the influence of printing parameters on the mechanical properties of different SMPs. Future scope for research in this area includes exploring the use of new infill structures, developing techniques for printing multi-material SMPs, and investigating the use of SMPs in novel applications, such as biomedical devices and soft robotics. Overall, by summarizing and quantifying the factors that influence the properties of 3D-printed SMPs, our review provides a valuable resource for researchers and manufacturers looking to improve the production of these materials for various fields. Therefore, summarizing these factors can improve the production of such materials for v

关键词： Additive manufacturing Infill structure printing parameters Reinforcement Shape Memory Polymers (SMPs)

来源：评论

学校读者我要写书评

暂无评论

Enhancing the adhesion strength of ink-jet printed indium tin oxide films: The role of printing parameters

引用

MATERIALS & DESIGN 2023年第1期232卷

作者： Song, Jianan Huang, Jia Qiu, Lu Cent South Univ Sch Mech & Elect Engn Changsha 410083 Peoples R China Cent South Univ State Key Lab Precis Mfg Extreme Servece Performan Changsha 410083 Peoples R China Cent South Univ Res Inst Aerosp Technol Changsha 410083 Peoples R China Beihang Univ Sch Energy & Power Engn Natl Key Lab Sci & Technol Aerothermodynam Beijing 100083 Peoples R China

This study investigates the impact of printing parameters on the adhesion strength of ink-jet films, focusing on indium tin oxide (ITO) and indium oxide (In2O3) films deposited on ceramic substrates with varying printing speed and stack layers. The surface morphology of films with different printing parameters is characterized, and microscratch tests are conducted to calculate the adhesion energy of the films. The relationships between printing parameters, microstructures, and adhesion strength are emphasized, which could provide innovative insights into the mechanical properties of ink-jet printing films dependent on printing parameters. The results are also contributed to a new perspective on the design and repair of ink-jet printed indium tin oxide films.

关键词： Ink-jet film printing parameters Adhesion strength Microscratch test ITO

来源：评论

学校读者我要写书评

暂无评论

Influence of printing parameters and short carbon fibre reinforcement on fatigue behaviour, dimensional accuracy and macrogeometrical deviations of polylactic acid in material extrusion

引用

COMPOSITES SCIENCE AND TECHNOLOGY 2023年 242卷

作者： Gamboa, Carolina Bermudo Martin-Bejar, Sergio Vilches, Javier Trujillo Hurtado, Lorenzo Sevilla Univ Malaga Dept Civil Mat & Mfg Engn EII Malaga 29071 Spain

This paper evaluates the potential of short carbon fibres as a reinforcement material in order to improve the fatigue resistance of PLA. The fatigue behaviour has been analysed through rotational bending fatigue tests. The influence of printing parameters, such as layer thickness, printing temperature and printing speed, on the me-chanical behaviour, dimensional accuracy and macrogeometrical deviations of printed parts have also been analysed as they can too interfere with the mechanical behaviour of the parts. The results show that there is no improvement on the mechanical behaviour of the printed parts with the incorporation of short carbon fibres. On the contrary, the fatigue behaviour worsens due to the poor adhesion between the short carbon fibres and the PLA matrix. Fatigue life is reduced by 6% compared to PLA. Focusing only on the printing parameters, it is shown that at the highest temperature allowed, the fatigue behaviour improves a 12%. The printing speed is the least influential variable, with the layer thickness having the greatest influence, increasing fatigue life by 15% comparing 0.1 mm and 0.3 mm. Therefore, the best combination would be to print with the highest temperature and the highest layer thickness, for this case study. Finally, a parametric relationship is presented in order to relate the layer thickness with the fatigue behaviour.

关键词： Additive manufacturing Polylactic acid Short carbon fibres Material extrusion printing parameters Fatigue behaviour Dimensional accuracy

来源：评论

学校读者我要写书评

暂无评论

The Effect of printing parameters on the Characteristics of PCL Scaffold in Tissue Engineering Application

The Effect of Printing Parameters on the Characteristics of ...

引用

AUN/SEED-Net Joint Regional Conference in Transportation, Energy, and Mechanical Manufacturing Engineering, RCTEMME 2021

作者： Quang Ta, Tuan Kien Nguyen, Trung Hoanh Truong, Son Xuan Phung, Lan National Research Institute of Mechanical Engineering Hanoi Viet Nam School of Mechanical Engineering Hanoi University of Science and Technology Hanoi Viet Nam

ISBN: (纸本)9789811919671

Three-dimensional (3D) printing is one of the most prospective techniques to fabricate scaffolds in tissue engineering because of its outstanding advantages in the ability to construct controllable and complex 3D structures. The scaffold should have a 3D porous structure and suitable mechanical properties to create a favorable environment for cell ingrowth. In this study, the effect of printing parameters for a 3D printer based on Fused Deposition Modelling (FDM) on the quality of Polycaprolactone (PCL) scaffold is investigated. The scaffold is fabricated and the main geometry characteristics of the scaffold in different printing conditions are evaluated. The results show that the filament width and pore size are significantly affected by printing parameters such as velocity, acceleration, and printing temperature of the 3D printing process. The result is the basis for further studies to optimize the accuracy of scaffolds. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： 3D printing PCL scaffold printing parameters Tissue engineering

来源：评论

学校读者我要写书评

暂无评论

Optimizing printing and rheological parameters for 3D printing with cementitious materials

引用

AUTOMATION IN CONSTRUCTION 2025年 169卷

作者： Wang, Qingwei Han, Song Yang, Junhao Li, Ziang An, Mingzhe Beijing Jiaotong Univ Sch Civil Engn Beijing 100044 Peoples R China Southeast Univ Sch Civil Engn Nanjing 211189 Peoples R China

In 3D printing, selecting appropriate printing parameters based on material rheology is critical for achieving compatible filaments with optimal performance. However, the process of aligning printing parameters with rheological properties lacks a robust theoretical foundation. This study investigates the influence of printing and rheological parameters on the relative printing length of molded filaments, categorizing them into three distinct printing conditions. Computational Fluid Dynamics (CFD) simulations model the slurry extrusion process, analyzing the cross-sectional shape, stress distributions, extruded profile changes, surface roughness, and pore structure under varying conditions. The optimal printing condition is identified based on filament characteristics, aiming to establish a theoretical basis for synchronizing rheological and printing parameters in practical applications.

关键词： 3D printing Rheological parameters printing parameters printing conditions Computational fluid dynamics (CFD)

来源：评论

学校读者我要写书评

暂无评论

Investigation of printing parameters effects on mechanical and failure properties of 3D printed PLA

引用

ENGINEERING FAILURE ANALYSIS 2023年第1期148卷

作者： Benamira, Mohamed Benhassine, Naamane Ayad, Amar Dekhane, Azzeddine Univ BADJI Mokhtar Annaba Lab Mecan Ind LMI Annaba Algeria Ecole Natl Super Technol & Ingn Annaba Algeria

Predicting the mechanical properties or analyzing the failure mode of fused deposition modeling products is challenging due to the layer-by-layer structure and the manufacturing parameters that can interact and be potentially conflicting. Understanding the effects and potential interactions of printing parameters, such as layer thickness, printing (build) orientation, infill density, and infill pattern, is crucial to enhancing the performance of in-service parts. This study investigates the main and interaction effects of layer thickness and printing orientation on the mechanical and failure properties in the case of two levels of infill density (100% and 40%). Tensile tests on 3D Printed PLA samples were carried out for this purpose. An ANOVA analysis was performed based on the experimental results to examine these effects on the mechanical properties. The primary findings demonstrate that the selected parameters' main and interaction effects vary throughout the considered infill densities. With this variation, it is clearly stated that samples with a 100% infill density are more sensitive to interaction effects, and the ones with a 40% infill density are more sensitive to main effects. Examining the fracture surface also details the fractographic features linked to the printing parameters, such as the appearance of plastic deformation and inter-filament debonding.

关键词： Fused deposition modeling ANOVA analysis printing parameters parameters? effect Fractographic features

来源：评论

学校读者我要写书评

暂无评论

Study of the Mechanical Properties of 3D-printed Onyx Parts: Investigation on printing parameters and Effect of Humidity

引用

Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers) 2023年第2期2卷 35-42页

作者： Daouda Nikiema Pascale Balland Alain Sergent Laboratoire Systemes et Materiaux Pour la Mecatronique(SYMME) Universite Savoie Mont BlancAnnecyF-74000France

Recently,an increasing number of parts have been produced using additive manufacturing *** are no longer simply prototypes but structural parts whose mechanical characteristics must be known before *** of the weaknesses of 3D printing is the significant variability in the dimensions and geometrical and mechanical properties of the printed *** properties depend on specific printing parameters and environmental *** study aims to determine the influence of two printing parameters,namely,the orientation and positioning of the parts on the printing platform and the influence of humidity on the mechanical properties of the *** studied samples were fabricated with onyx using a Markforged X7 *** results showed that onyx could be considered an isotropic material to a certain extent because its mechanical properties do not vary sufficiently according to the orientation angle on the printing platform;a maximum deviation of 10%was observed between the different *** contrast to the orientation,the positioning(flat or XY,on-edge or XZ,and upright or ZX)of the workpieces significantly influenced the mechanical *** on the edge allowed the Young’s modulus to be up to 50% greater than that of flat and upright *** study of the sensitivity to humidity revealed that a specimen absorbs approximately 2%of the humidity and loses up to 65%of its Young’s modulus after 165 days of exposure,significantly influencing the mechanical properties of the *** should be given to this aging of onyx when using printed parts as structural parts.

关键词： 3D printing Onyx printing parameters Moisture content Mechanical properties

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：