Re‐entrant auxetic structures fabricated by fused deposition modeling: An experimental study of influence of process parameters under compressive loading

2020 ◽  
Vol 60 (12) ◽  
pp. 3183-3196
Author(s):  
Swapnil Vyavahare ◽  
Shailendra Kumar
Keyword(s):  
Experimental Study ◽  
Process Parameters ◽  
Fused Deposition Modeling ◽  
Compressive Loading ◽  
Influence Of Process Parameters ◽  
Fused Deposition ◽  
Auxetic Structures ◽  
Deposition Modeling

scholarly journals Optimization of Truss Collinear Lattice Fabricated using Fused Deposition Modeling Technique

2019 ◽  
Vol 9 (2) ◽  
pp. 3133-3139
Keyword(s):  
Process Parameters ◽  
Fused Deposition Modeling ◽  
Lattice Structure ◽  
Surface Finishing ◽  
Influence Of Process Parameters ◽  
Fused Deposition ◽  
Printing Quality ◽  
Structural Applications ◽  
Deposition Modeling ◽  
Analytic Design

manufacturing (AM) enables the production of lattice structure architecture due to its capability to produce complex geometries. Lattice structure is a design that contains a space-filling unit cell that can be tessellated among any axis. It is an analytic design to reduce mass and weight of the object. However, many challenges arise in the AM- printed lattice such as warping, shrinkage, elephant foot, first layer problem, surface finishing and mechanical properties especially when fabricated using fused deposition modeling (FDM) technique. Hence, this study aims to optimize the influence of process parameters of collinear lattice FDM printed part using Taguchi. Meanwhile, S/N ratio was used to find the optimal process parameters in improving the printing quality. Other than that, the analysis of variance (ANOVA) was used to provide the significance ranking of various factors analyzed. From the results, it was found that the layer thickness is the most significant factors that affect the maximum force (N) of collinear lattice structures. In addition, this study was conducted to assist the fabrication of printed part for the structural applications.

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.

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