Rashid, Muhammad Fahad  <br/><br/>
Investigation of 3D Printed Honeycomb Cores by Varying Printing Parameters for Different Loading Conditions / 
Muhammad Fahad Rashid 
 - 69p.  Soft Copy  30cm 
<br/><br/> Light weight components having greater strength and lower manufacturing cost are the need<br/>of the hour especially for aerospace industries. For this, honeycomb sandwich structures of<br/>various materials and parameters are developed by Additive Manufacturing (AM) to meet the<br/>desired output of sufficient strength to withstand compression and flexural loading. In this<br/>paper, the honeycomb structures are fabricated using a fused filament fabrication (FDM)<br/>technique. The effect of different printing conditions on the compressive and flexural properties<br/>of the 3D-printed honeycomb structures made of PLA, ABS and PLA+ polymeric laminates<br/>are investigated experimentally and analyzed by Taguchi and ANOVA (Analysis of Variance).<br/>Three build orientations, i.e., 0, 45 and 90 degrees, with layer heights of 0.1, 0.2 and 0.3 mm<br/>are considered for the 3D printing. Moreover, Multi-objective optimization is performed to<br/>optimize the strength and printing time (cost) of L27 array samples. Results show that 90ᵒ and<br/>0ᵒ build orientations with 0.3 mm layer height being PLA and PLA+ the best materials are the<br/>optimum conditions for compressive and flexural mode of testing, respectively. The results<br/>deduced that compressive and flexural samples could withstand maximum load of 69,000N<br/>and 120 N with minimum printing time. Thus. it would be fruitful in harnessing energy for the<br/>development of sustainable printing of durable components. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MS Design and Manufacturing Engineering  
<br/><br/><label>Dewey Class. No.: </label>670