Study On Single Strut Formation Using Additive Layer Manufacturing

Chee, Ying Chen (2018) Study On Single Strut Formation Using Additive Layer Manufacturing. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The lattice-structure materials are suitable for lightweight structural applications as they have the properties of flexible and high stiffness. In a lattice-structure material, its basic unit is single strut which is a member that connects two nodes. Hence, understanding the single strut properties is important in lattice-structure material study. This study is conducted to analyse layer by layer formation of fabricated single strut using a 3D printer with several parameters. The chosen diameters of single struts are 1.2mm, 1.4mm and 1.6mm while the build angles are set as 0o, 20o, 35.26o, 45o, 60o, 80o and 90o from a vertical line. All single struts are needed to be designed with suitable supports before proceed to fabrication stage. After three sets of 21 specimens are fabricated using CubePro 3D printer successfully, all single struts are analysed on their diameter using Dino-Lite Pro. The difference between measured diameter and designed diameter for each single strut is recorded. Next, the selected single struts with 35.26o build angle are analysed on their surface roughness using Dino-Lite Pro and 3D non-contact profilometer. A graph of surface roughness versus strut diameter is constructed for both equipment used. Thus, the results show that all single struts have the accuracy of more than 86% when comparing the readings of measured diameter and designed diameters. The single strut with 1.2mm diameter for 35.26o build angles has the lowest Ra (Roughness Average) value. The comparison between individual strut and struts arranged in lattice structure in physical test is recommended to be conducted for future study.

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