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EFFECTS OF INFILL SHAPES ON MECHANICAL BEHAVIORS OF 3D PRINTED PLASTICS

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Title: EFFECTS OF INFILL SHAPES ON MECHANICAL BEHAVIORS OF 3D PRINTED PLASTICS  

 

Abstract:  3D printing technology has made great progress in the product and development sectors.  The ability to quickly go from an idea to a tangible product is the dream of any engineer.  The potential for the types of parts that can be created using 3D printing is truly limitless.  One major reason for this is the large number of customizable inputs that the user can define before the printing process begins.  One of the most important considerations, especially when dealing with structural components, is the type and percentage of part infill, which can dominate the strength and overall weight of the manufactured parts. This study takes a look at how the geometrical shapes of the infills affect the tensile properties of 3D printed parts.  Specimen of rectangular, diamond, and hexagonal infill patterns were printed on an open source desktop printer using the fused filament fabrication (FFF) 3D printing method.  A sampling of solid specimen was also printed in order to provide a baseline for comparison.  These specimen were then subjected to tensile testing in accordance with the ASTM D638 standard. Through the combined use of these diagrams and a few basic formulas, mechanical properties such as modulus, yield stress, ultimate tensile stress, and percent elongation were able to be determined for each geometrical infill configuration.  The test results for each shape were then compared and contrasted using both visual and tabulated means for future product designs.  
  

 

Authors: Tanner D. Harpool, Mohammed Alamir, and Ramazan Asmatulu 

 

Conference: CAMX 2017 –Orlando

 

SKU/Code: TP17-0278

 

Pages: 8


 

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