Comparison of flexural strength of parts fabricated by vacuum casting with different fillers and fused deposition modeling with different printing angles

2022 ◽  
Author(s):  
Chil-Chyuan Kuo ◽  
Hsueh-An Liu ◽  
Zhi-Ming Chang ◽  
Cheng-You Yu ◽  
Hong-Yi Lian
Keyword(s):  
Flexural Strength ◽  
Fused Deposition Modeling ◽  
Vacuum Casting ◽  
Fused Deposition ◽  
Deposition Modeling

Effect of process parameters on flexural strength and surface roughness in fused deposition modeling of PC-ABS material

2021 ◽  
pp. 251659842110311
Author(s):  
Shrikrishna Pawar ◽  
Dhananjay Dolas1
Keyword(s):  
Surface Roughness ◽  
Flexural Strength ◽  
Response Surface ◽  
Layer Thickness ◽  
Process Parameters ◽  
Surface Finish ◽  
Fused Deposition Modeling ◽  
Build Orientation ◽  
Fused Deposition ◽  
Deposition Modeling

Fused deposition modeling (FDM) is one of the most commonly used additive manufacturing (AM) technologies, which has found application in industries to meet the challenges of design modifications without significant cost increase and time delays. Process parameters largely affect the quality characteristics of AM parts, such as mechanical strength and surface finish. This article aims to optimize the parameters for enhancing flexural strength and surface finish of FDM parts. A total of 18 test specimens of polycarbonate (PC)-ABS (acrylonitrile–butadiene–styrene) material are printed to analyze the effect of process parameters, viz. layer thickness, build orientation, and infill density on flexural strength and surface finish. Empirical models relating process parameters with responses have been developed by using response surface regression and further analyzed by analysis of variance. Main effect plots and interaction plots are drawn to study the individual and combined effect of process parameters on output variables. Response surface methodology was employed to predict the results of flexural strength 48.2910 MPa and surface roughness 3.5826 µm with an optimal setting of parameters of 0.14-mm layer thickness and 100% infill density along with horizontal build orientation. Experimental results confirm infill density and build orientation as highly significant parameters for impacting flexural strength and surface roughness, respectively.

Effect of layer thickness on irreversible thermal expansion and interlayer strength in fused deposition modeling

2017 ◽  
Vol 23 (5) ◽  
pp. 943-953 ◽  
Author(s):  
Anthony A. D’Amico ◽  
Analise Debaie ◽  
Amy M. Peterson
Keyword(s):  
Mechanical Properties ◽  
Thermal Expansion ◽  
Flexural Strength ◽  
Layer Thickness ◽  
Fused Deposition Modeling ◽  
Thermal Strain ◽  
Content Type ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
The Impact

Purpose The aim of this paper is to examine the impact of layer thickness on irreversible thermal expansion, residual stress and mechanical properties of additively manufactured parts. Design/methodology/approach Samples were printed at several layer thicknesses, and their irreversible thermal expansion, tensile strength and flexural strength were determined. Findings Irreversible thermal strain increases with decreasing layer thickness, up to 22 per cent strain. Tensile and flexural strengths exhibited a peak at a layer thickness of 200 μm although the maximum was not statistically significant at a 95 per cent confidence interval. Tensile strength was 54 to 97 per cent of reported values for injection molded acrylonitrile butadiene styrene (ABS) and 29 to 73 per cent of those reported for bulk ABS. Flexural strength was 18 to 41 per cent of reported flexural strength for bulk ABS. Practical implications The large irreversible thermal strain exhibited that corresponding residual stresses could lead to failure of additively manufactured parts over time. Additionally, the observed irreversible thermal strains could enable thermally responsive shape in additively manufactured parts. Variation in mechanical properties with layer thickness will also affect manufactured parts. Originality/value Tailorable irreversible thermal strain of this magnitude has not been previously reported for additively manufactured parts. This strain occurs in parts made with both high-end and consumer grade fused deposition modeling machines. Additionally, the impact of layer thickness on tensile and flexural properties of additively manufactured parts has received limited attention in the literature.

scholarly journals Influence of Fill Gap on Flexural Strength of Parts Fabricated by Curved Layer Fused Deposition Modeling

2015 ◽  
Vol 20 ◽  
pp. 243-248 ◽  
Author(s):  
Hua Wei Guan ◽  
Monica Mahesh Savalani ◽  
Ian Gibson ◽  
Olaf Diegel
Keyword(s):  
Flexural Strength ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Deposition Modeling

scholarly journals Experimental investigation on flexural properties of FDM-processed PET-G specimen using response surface methodology

2021 ◽  
Vol 349 ◽  
pp. 01008
Author(s):  
Nikolaos A. Fountas ◽  
Ioannis Papantoniou ◽  
John D. Kechagias ◽  
Dimitrios E. Manolakos ◽  
Nikolaos M. Vaxevanidis
Keyword(s):  
Flexural Strength ◽  
Response Surface ◽  
Fused Deposition Modeling ◽  
Performance Metrics ◽  
Optimal Parameter ◽  
Strong Dependence ◽  
Control Parameters ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
3D Printed

The properties of fused deposition modeling (FDM) products exhibit strong dependence on process parameters which may be improved by setting suitable levels for parameters related to FDM. Anisotropic and brittle nature of 3D-printed components makes it essential to investigate the effect of FDM control parameters to different performance metrics related to resistance for improving strength of functional parts. In this work the flexural strength of polyethylene terephthalate glycol (PET-G) is examined under by altering the levels of different 3D-printing parameters such as layer height, infill density, deposition angle, printing speed and printing temperature. A response surface experiment was established having 27 experimental runs to obtain the results for flexural strength (MPa) and to further investigate the effect of each control parameter on the response by studying the results using statistical analysis. The experiments were conducted as per the ASTM D790 standard. The regression model generated for flexural strength adequately explains the variation of FDM control parameters on flexural strength and thus, it can be implemented to find optimal parameter settings with the use of either an intelligent algorithm, or neural network.

Sustainable Natural Bio Composite for FDM Feedstocks

2014 ◽  
Vol 607 ◽  
pp. 65-69 ◽  
Author(s):  
M. Ibrahim ◽  
N.S. Badrishah ◽  
Nasuha Sa'ude ◽  
Mohd Halim Irwan Ibrahim
Keyword(s):  
Flexural Strength ◽  
Injection Molding ◽  
Fused Deposition Modeling ◽  
Wood Flour ◽  
Injection Molding Process ◽  
Molding Process ◽  
Weight Percentage ◽  
Fused Deposition ◽  
Plastic Composite ◽  
Deposition Modeling

This paper presents the development of a new Wood Plastic Composite (WPC) material for Fused Deposition Modeling (FDM) feedstocks. In this study, a biodegradable polymer matrix (POLYACTIDE, PLA) was mixed with natural wood flour (WF) by Brabender mixer, and the samples produced by injection molding machine. The effect of wood was investigated as a filler material in composite FDM feedstock and the detailed formulations of compounding ratio by weight percentage. Based on results obtained, it was found that, compounding ratio of PLA80%:WF20% has a goods result on the tensile strength and PLA60% : WF40% gave a higher value of flexural strength. An increment of 20% to 40% WF filler affected the flexural strength, and hardness results. The highly filled WF content in PLA composites increases the mechanical properties of PMC material through the injection molding process. The potential of development of a sustainable composite material will be explored as the FDM feedstocks in the rapid prototyping process.

Flexural Properties of FDM Prototypes Made with Honeycomb and Sparse Structure

2014 ◽  
Vol 635 ◽  
pp. 169-173 ◽  
Author(s):  
Ivan Gajdoš ◽  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Ján Slota
Keyword(s):  
Flexural Strength ◽  
Fused Deposition Modeling ◽  
Processing Parameters ◽  
Bending Test ◽  
Geometrical Shape ◽  
Fused Deposition ◽  
Rp Process ◽  
Build Time ◽  
Deposition Modeling ◽  
Complicated Geometry

The rapid prototyping (RP) process is capable of building parts of any complicated geometry in least possible time without incurring extra cost due of absence of tooling. Fused deposition modeling (FDM) is a fast growing RP technology due to its ability to build functional parts having complex geometrical shape in reasonable time period. The quality of built parts depends on many process variables. The presented study focus on assessment of mechanical property flexural strength of part fabricated using fused deposition modeling (FDM) technology. The 3-point bending test was used, to determine flexural strength. Samples were made of polycarbonate on Fortus 400 mc machine from polycarbonate with slice height 0.127mm. The experiment was focused on influence of air-gap size between fibers and number of outline contours on selected mechanical properties of FDM prototypes determined 3-point bending test. The results show possibility to obtain weight reduction in printed parts with sparse structure with sufficient flexural strength and with reduced build time, compared to structure printed with default machine setting,. To obtain optimal processing parameters for 3D printing prototypes, it is necessary to execute further experiments, which could verify gathered results.

The Influence of an Infill Density, Percent on the Flexural Strength of the 3D

2020 ◽  
Vol 870 ◽  
pp. 73-80
Author(s):  
Nuha Hadi Jasim Al Hasan
Keyword(s):  
Tensile Strength ◽  
3D Printing ◽  
Flexural Strength ◽  
Layer Thickness ◽  
Polylactic Acid ◽  
Fused Deposition Modeling ◽  
Bending Test ◽  
Layer By Layer ◽  
Fused Deposition ◽  
Deposition Modeling

3D printing innovation, as a quick prototyping, utilize plastic or metal as the crude material to print the genuine parts layer by layer. In this way, it is likewise called added substance producing procedure. Contrasted and conventional assembling innovation, 3D printing innovation has evident points of interest in assembling items with complex shapes and structures. Fused deposition modeling (FDM) is one of the most broadly utilized 3D printing advances. Fibers of thermoplastic materials, for example, polylactic acid is for the most part utilized as crude materials. The present examination will concentrate on the effect of the infill density, percent on the flexural strength of polylactic acid. Bending test was performed on different infill density, percent of specimens. According to ASTM D638.14 standards, samples for testing are made in different infill density, percent (20, 30, 40, 50 and 60 %) by using a polylactic acid in 3D machine printing and their tensile tested and the parameters include different fill density, layer high of 0.1 mm , 0.2mm and 0.3 have an effect on the mechanical characterized while the time of printing the sample would be increased with increasing of fill density%. The tensile strength of polylactic acid samples was found at different fill density and a layer thickness. According to test measuring results that the tensile strength, maximum 47.1,47.4, and 48 MPa at 30%,40%,and 50% fill density respectively and 0.1mm height layer and the tensile strength minimum at 60% and 70 % fill density and 0.1 mm height layer thickness. The higher strength results as higher layer thickness 0.3 mm as compared with 0.1 and 0.2 at 30%fill density.

Woven Carbon Fiber Reinforced Laminate Matrix Composite Through Fused Deposition Modeling

2020 ◽  
Author(s):  
Rachit Ranjan ◽  
Piyush Raote ◽  
Vivek Bajpai
Keyword(s):  
Tensile Strength ◽  
Carbon Fiber ◽  
Flexural Strength ◽  
Fused Deposition Modeling ◽  
Optimization Technique ◽  
Testing Machine ◽  
Tensile Testing Machine ◽  
Fused Deposition ◽  
Bed Temperature ◽  
Deposition Modeling

Abstract A novel fused deposition modeling (FDM) based fabrication technique for Woven carbon fiber (WCF) reinforced PLA matrix laminated composite was proposed. The composite was fabricated by placing a layer of carbon fiber (CF) after every 5th layer of PLA matrix such that there was a total of 3 layers of CF in every tensile specimen fabricated. The parameter such as extrusion temperature, feed rate, and bed temperature was initially optimized by the Taguchi L9 optimization technique to get high-density low surface roughness specimens. Mechanical properties such as tensile strength and flexural strength of the specimen were measured in Hounsfield tensile testing machine. The composite has the yield and ultimate tensile strength of 43.378 MPa and 70.84 MPa which is 114.01% and 172.94% higher than the unreinforced specimen. The Flexural strength of the composite was found to be 117.88 MPa which is 17.91 % higher than the unreinforced 3D printed specimen. The proposed technique has offered a potential strategy to fabricate low-cost products with variable design for versatile applications such as aerospace and automobile industries.

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