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Investigation of additive manufactured micro-lattice structures for defence applications Cover

Investigation of additive manufactured micro-lattice structures for defence applications

Open Access
|Nov 2023

Abstract

This study investigates the blast mitigation capabilities of A286 steel micro-lattice structures produced through additive manufacturing. The research explores the effects of different manufacturing conditions, such as stress relief and heat treatment, on the mechanical properties and blast resistance of honeycomb and gyroid lattice structures in correlation with armour steel structures. Comprehensive evaluations, including surface morphology, corrosion resistance, and compressive residual stress analysis, reveal notable findings for micro-lattice structures. Micro-lattice structures demonstrated 57.23% higher corrosion resistance compared to conventional materials, presently available in the form of rolled homogeneous armour, medium hardness armour, and high-nitrogen steel. Additionally, honeycomb lattice structures exhibit compressive residual stresses of up to 581.90 MPa, providing significant advantages in blast mitigation potential. These results underscore the significance of lattice geometry, material microstructure, and residual stress in enhancing blast resistance. The research offers valuable insights into optimizing additive manufactured structures as an alternative modular solution for defence applications.

DOI: https://doi.org/10.2478/msp-2023-0023 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 383 - 400
Submitted on: Aug 4, 2023
Accepted on: Sep 13, 2023
Published on: Nov 29, 2023
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2023 Ameer Malik Shaik, Bobbili Veera Siva Reddy, C. Chandrasekhara Sastry, J. Krishnaiah, B. Ramakrishna, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.