Laser Directed Energy Deposition for Military Aircraft Repairs
An Australian research alliance aims to certify additive repairs for defense alloys without post-process heat treatment.
By Letizia Giugliano
2 min readHuman-Edited, AI-Assisted
Rosebank Engineering, RMIT Centre for Additive Manufacturing, and Swinburne University of Technology have launched an additive manufacturing initiative to repair worn military aircraft components. Supported by the Additive Manufacturing Cooperative Research Centre, the alliance focuses on qualifying laser directed energy deposition to bypass long-lead-time overseas parts replacements. This engineering innovation aims to meet stringent aerospace structural benchmarks directly on the factory floor.
Controlling alloy microstructure with laser rescanning
Traditional metal additive manufacturing often demands subsequent thermal furnace steps to relieve internal stresses and establish optimal mechanical characteristics. However, in aerospace and space component maintenance, high furnace temperatures frequently warp the underlying component geometry. To solve this, the research consortium is implementing an in-process laser rescanning innovation to tailor localized thermal input during metal addition, as reported by VoxelMatters. The methodology targets precipitation-hardening materials, specifically Inconel, titanium and 15-5PH stainless steel, manipulating phase transformations during build cycles so that parts attain desired material properties without post-process heat treatment.
“Certification is evidence-driven. Our role is to produce the data that proves the process is robust, repeatable and capable of meeting aerospace requirements.”
— Professor Suresh Palanisamy, Swinburne University of Technology
Validating the AMCLAD system against aerospace standards
Process validation is led by Rosebank Engineering using its proprietary intellectual property, the AMCLAD platform, short for Adaptive Monitoring and Control of Laser Additive Deposition. The team is gathering experimental data to demonstrate that repaired components can fulfill original equipment manufacturer specifications and NASA-STD-6030 requirements. While Rosebank directs the industrial deposition development, researchers at Swinburne University of Technology and RMIT University are characterizing fatigue life, tensile strength, residual stress, corrosion resistance, and wear behavior to compile a comprehensive Material Property Suite via this 3D printing technique, according to VoxelMatters.
Sovereign maintenance and future flight qualifications
The two-year collaboration is specifically oriented toward sustaining defense aviation assets, including planned investigations into F/A-18 engine component repairs. By enabling domestic, in-country restoration of mission-critical assemblies, defense operators seek to mitigate reliance on vulnerable global supply chains while cutting sustainment ownership expenses. Facilitated by the Additive Manufacturing Cooperative Research Centre to foster technology transfer between universities and industry, the project's next phase will focus on generating the statistical mechanical data required to prove process repeatability and achieve formal flight qualification, as detailed by VoxelMatters.
Read also on The Patent: Engineered Crystal Defects Strengthen Metal Alloys Without Chemical Tweaks · The first recyclable wind blade
