Comparative Analysis of Mechanical Properties in 3D Printed PLA Dog Bone and Sandwich Structures via Additive Manufacturing

https://doi.org/10.5281/zenodo.17470784

Authors

  • Ikhrad Khan Department of Mechanical Engineering, University of Engineering and Technology Peshawar Pakistan Author
  • M.Faizan Khan Department of Mechanical Engineering, University of Engineering and Technology Peshawar Pakistan Author

Abstract

For comparative testing of ultimate tensile strength, flexural strength, hardness, and modulus of elasticity, dog-bone and sandwich structure specimens were 3D-printed using an entry-level MakerBot Replicator Mini+ and standard polylactic acid (PLA) material. Printing was performed under consistent parameters, including internal, external, and bed temperatures. The results showed that the sandwich structure's strength and modulus of elasticity were higher than the dog-bone's. Specifically, the flexural strength of the sandwich specimens (43–73 MPa) was greater than the tensile strength of the dog-bone specimens (38–55 MPa). Furthermore, the modulus of elasticity for the sandwich structures ranged from 1,800 to 3,600 MPa, a marked increase over the dog-bone specimens, which ranged from 950 to 1,250 MPa. In contrast, the dog-bone specimens showed greater hardness, with values of 50–165 HV, compared to the 70–100 HV range of the sandwich structures.

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Published

2025-09-11

Issue

Vol. 3 No. 9 (2025): Annual Methodological Archive Research Review

Section

Applied Sciences

How to Cite

Comparative Analysis of Mechanical Properties in 3D Printed PLA Dog Bone and Sandwich Structures via Additive Manufacturing: https://doi.org/10.5281/zenodo.17470784. (2025). Annual Methodological Archive Research Review, 3(9), 299-307. https://www.amresearchjournal.com/index.php/Journal/article/view/758