scholarly journals Characterization and Optimization of Mechanical Properties of ABS Parts Manufactured by the Fused Deposition Modelling Process

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Godfrey C. Onwubolu ◽  
Farzad Rayegani
Keyword(s):  
Tensile Strength ◽  
Additive Manufacturing ◽  
Process Parameters ◽  
Group Method ◽  
Fused Deposition Modelling ◽  
Process Conditions ◽  
Research Issues ◽  
Practical Applications ◽  
Fused Deposition ◽  
Study Results

While fused deposition modelling (FDM) is one of the most used additive manufacturing (AM) techniques today due to its ability to manufacture very complex geometries, the major research issues have been to balance ability to produce aesthetically appealing looking products with functionality. In this study, five important process parameters such as layer thickness, part orientation, raster angle, raster width, and air gap have been considered to study their effects on tensile strength of test specimen, using design of experiment (DOE). Using group method of data handling (GMDH), mathematical models relating the response with the process parameters have been developed. Using differential evolution (DE), optimal process parameters have been found to achieve good strength simultaneously for the response. The optimization of the mathematical model realized results in maximized tensile strength. Consequently, the additive manufacturing part produced is improved by optimizing the process parameters. The predicted models obtained show good correlation with the measured values and can be used to generalize prediction for process conditions outside the current study. Results obtained are very promising and hence the approach presented in this paper has practical applications for design and manufacture of parts using additive manufacturing technologies.

Optimising the FDM additive manufacturing process to achieve maximum tensile strength: a state-of-the-art review

2019 ◽  
Vol 25 (6) ◽  
pp. 953-971 ◽  
Author(s):  
Tessa Jane Gordelier ◽  
Philipp Rudolf Thies ◽  
Louis Turner ◽  
Lars Johanning
Keyword(s):  
Tensile Strength ◽  
Additive Manufacturing ◽  
Material Selection ◽  
Single Point ◽  
Air Gap ◽  
Fused Deposition Modelling ◽  
Content Type ◽  
Maximum Tensile Strength ◽  
Fused Deposition ◽  
Raster Angle

Purpose Additive manufacturing or “3D printing” is a rapidly expanding sector and is moving from a prototyping service to a manufacturing service in its own right. With a significant increase in sales, fused deposition modelling (FDM) printers are now the most prevalent 3D printer on the market. The increase in commercial manufacturing necessitates an improved understanding of how to optimise the FDM printing process for various product mechanical properties. This paper aims to identify optimum print parameters for the FDM process to achieve maximum tensile strength through a review of recent studies in this field. Design/methodology/approach The effect of the governing printing parameters on the tensile strength of printed samples will be considered, including material selection, print orientation, raster angle, air gap and layer height. Findings The key findings include material recommendations, such as the use of emerging print materials like polyether-ether-ketone (PEEK), to produce samples with tensile strength over 200 per cent that of conventional materials such as acrylonitrile butadiene styrene (ABS). Amongst other parameters, it is shown that printing in the “upright” orientation should be avoided (samples can be up to 50 per cent weaker in this orientation) and air gap and raster width should be concurrently optimised to ensure good “inter-raster” bonding. The optimal choice of raster angle depends on print material; in ABS for example, selecting a 0° raster angle over a 90° angle can increase tensile strength by up to 100 per cent. Originality/value The paper conclusions provide researchers and practitioners with an up-to-date, single point reference, highlighting a series of robust recommendations to optimise the tensile strength of FDM-printed samples. Improving the mechanical performance of FDM-printed samples will support the continued growth of this technology as a viable production technique.

Effect of process parameters on tensile strength of FDM printed PLA part

2018 ◽  
Vol 24 (8) ◽  
pp. 1317-1324 ◽  
Author(s):  
Shilpesh R. Rajpurohit ◽  
Harshit K. Dave
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Process Parameters ◽  
Fused Deposition Modelling ◽  
Type I ◽  
Content Type ◽  
Layer Height ◽  
Fused Deposition ◽  
Anisotropic Mechanical Properties ◽  
Raster Angle

PurposeThe purpose of this paper to study the tensile strength of the fused deposition modelling (FDM) printed PLA part. In recent times, FDM has been evolving from rapid prototyping to rapid manufacturing where parts fabricated by FDM process can be directly used for application. However, application of FDM fabricated part is significantly affected by poor and anisotropic mechanical properties. Mechanical properties of FDM part can be improved by proper selection of process parameters.Design/methodology/approachIn the present study, three process parameter, namely, raster angle, layer height and raster width, have been selected to study their effect on tensile properties. Parts are fabricated as per ASTM D638 Type I standard.FindingsIt has been observed that the highest tensile strength obtained at 0° raster angle. Lower value of layer height is observed to be good for higher tensile strength because of higher bonding area between the layers. At higher value of raster width, tensile strength is improved up to certain extent after which presence of void reduces the tensile strength.Originality/valueIn the present investigation, layer height and raster width have been also varied along with raster angle to study their effect on the tensile strength of FDM printed PLA part.

Research on the Effect of Technical Attributes on the Tensile Strength of FDM Products

2020 ◽  
Vol 863 ◽  
pp. 33-50
Author(s):  
Huu Nghi Huynh ◽  
Trong Hieu Bui ◽  
Thi Thu Ha Thai ◽  
Huu Tho Nguyen
Keyword(s):  
Tensile Strength ◽  
Process Parameters ◽  
Absolute Error ◽  
Fused Deposition Modelling ◽  
Layer By Layer ◽  
Ann Model ◽  
Fused Deposition ◽  
Artificial Neural Network Ann ◽  
The Relationship ◽  
Subsequent Layer

Nowadays, Fused Deposition Modelling (FDM) method has been growing rapidly, which can be used to fabricate complex parts within a reasonable time. The fabrication principle of FDM method is “layer by layer” so that the previous layer and subsequent layer don’t deposit each other to create the interface between two adjacent layers. Thus, the tensile strength of FDM product along building direction depends on various process parameters. In this study, five important process parameters such as layer thickness, build orientation, build style, infill density, and print temperature are considered. The effect on tensile strength is evaluated based on the tensile test of Polylactic Acid (PLA) part. The Design of experiment (DOE) based on the Central Composite Design (CCD) to consider the relationship between the process parameters and their response through the experimental data are gathered. The suitability of model is validated by Analysis of Variance (ANOVA) and t-test. Moreover, Artificial Neural Network (ANN) is also applied to predict the response for experimental model and compared with regression equation obtained from Response surface analysis (FCCCD). The results show that the predict value of ANN model is approximate to experiment value (R2 = 0.964), and the mean absolute error (MAE) of ANN model is smaller than those of FCCCD model. It is proved that ANN model is applicable to predict accurately the relationship between the process parameters and their response.

Effect of fused deposition modelling process parameters on mechanical properties of 3D printed parts

2019 ◽  
Vol 16 (4) ◽  
pp. 550-559 ◽  
Author(s):  
Abhinav Chadha ◽  
Mir Irfan Ul Haq ◽  
Ankush Raina ◽  
Rana Ratna Singh ◽  
Narendra Babu Penumarti ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Layer Thickness ◽  
Process Parameters ◽  
Fused Deposition Modelling ◽  
Content Type ◽  
Fused Deposition ◽  
Primary Layer ◽  
Bed Temperature ◽  
3D Printed

Purpose This paper aims to explore the effect of bed temperature, primary layer thickness and infill pattern (rectilinear, honeycomb, triangular) on the mechanical properties of tensile strength and bending strength of 3D printed parts. Design/methodology/approach Samples in accordance to various ASTM standards were printed by fused deposition modelling (FDM) method by varying the various input paramaters such as bed temperature, primary layer thickness and infill pattern (rectilinear, honeycomb, triangular). Tensile and bending testing was carried out on the printed parts, and post to the testing, fractography has been carried out using scanning electron microscope. Findings With increase in bed temperature tensile strength and flexural strength first increases then decreases. With the increase in primary layer thickness, tensile strength and flexural strength increase. With regard to infill patterns, triangular and honeycomb exhibit better tensile strength and better flexural strength. Practical implications The 3D printing is increasingly becoming important for manufacturing of engineering parts, determining the process parameters which could result in better mechanical and physical properties shall certainly help designers and manufacturers globally. Originality/value This work elucidates the effect of various process parameters of FDM on tensile and flexural properties of the samples.

Tensile Properties of Processed FDM Polycarbonate Material

2010 ◽  
Vol 654-656 ◽  
pp. 2556-2559 ◽  
Author(s):  
Syed H. Masood ◽  
Kalpeshkumar Mau ◽  
W.Q. Song
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Rapid Prototyping ◽  
Mechanical Strength ◽  
Tensile Properties ◽  
Process Parameters ◽  
Experimental Work ◽  
Fused Deposition Modelling ◽  
Fused Deposition ◽  
Raster Angle

Knowledge of the mechanical properties of parts processed by Fused Deposition Modelling (FDM) rapid prototyping process is essential for engineering applications of such parts as the mechanical strength of parts depends heavily on the FDM process parameters selected during part fabrication. Little knowledge is available for the Polycarbonate (PC) material used in the FDM systems. This paper presents results of the experimental work on the effect of the FDM process parameters such as air gap, raster width, and raster angle on the tensile properties of PC. Results show that FDM made parts have tensile strength in the range of 70 to 75 % of the moulded and extruded PC parts. The results will be valuable for different functional applications of FDM produced parts and assemblies.

scholarly journals Line Width Mathematical Model in Fused Deposition Modelling for Precision Manufacturing

2021 ◽  
Vol 231 ◽  
pp. 03003
Author(s):  
JC Jiang ◽  
Xinghua Xu ◽  
Wanzhi Rui ◽  
Zhengrong Jia ◽  
Zuowei Ping
Keyword(s):  
Mathematical Model ◽  
Additive Manufacturing ◽  
Line Width ◽  
Process Parameters ◽  
3D Models ◽  
Fused Deposition Modelling ◽  
Precision Manufacturing ◽  
Printing Process ◽  
Fused Deposition ◽  
The Future

Additive manufacturing is becoming increasingly popular because of its unique advantages, especially fused deposition modelling (FDM) which has been widely used due to its simplicity and comparatively low price. However, in current FDM processes, it is difficult to fabricate parts with highly accurate dimensions. One of the reasons is due to the slicing process of 3D models. Current slicing software divides the parts into layers and then lines (paths) based on a fixed value. However, in a real printing process, the printed line width will change when the process parameters are set in different values. The various printed widths may result in inaccuracy of printed dimensions of parts if using a fixed value for slicing. In this paper, a mathematical model is proposed to predict the printed line width in different layer heights. Based on this model, a method is proposed for calculating the optimal width value for slicing 3D parts. In the future, the proposed mathematical model can be integrated into slicing software to slice 3D models for precision additive manufacturing.

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