In Ireland, Dr. Kyriakos Kourousis is spearheading research on metal additive manufacturing within the Metal Plasticity and Additive Manufacturing Group at UL. His work emphasizes the behavior of metals under repeated loads, known as metal plasticity, enabling better predictions for the performance of components in real-world applications. The group employs experimental testing, microstructure analysis, and computer modeling to enhance the safety and efficiency of aeronautical parts, particularly focusing on how these materials respond to extreme conditions. This research is critical for ensuring that parts do not fail prematurely, which is vital for the aerospace industry. One of the significant advancements Kourousis notes is the integration of accessible metal 3D-printing technologies with sophisticated physics-based computational models. His team operates a metal 3D printer in collaboration with Croom Medical, which helps translate laboratory findings into practical guidelines for manufacturing. The group's focus on modeling metal plasticity complements their investigations into additive manufacturing techniques, leading to improved protocols for materials like titanium and steel. The research addresses key challenges in the field, such as the quality variations that arise during the recycling of powder used for 3D printing. Each usage cycle alters the powder's synthesis, potentially affecting the final product's properties, especially its plasticity behavior. Kourousis emphasizes the importance of understanding process signatures and managing residual stresses that can arise during printing. By refining scan strategies and considering the energy inputs in the printing process, the group aims to optimize metal additive manufacturing for better performance. Kourousis and his team's ongoing projects include developing yield prediction models for specific alloys, exploring process optimizations for laser powder bed fusion - the leading additive manufacturing method for metals - as well as investigating fatigue and corrosion behavior in aerospace-grade alloys. Their findings indicate that increasing the layer thickness in 3D printing can sustain or even enhance material strength without compromising ductility, suggesting opportunities for productivity gains in manufacturing. As the sector advances, the research undertaken by Kyriakos Kourousis will play an instrumental role in guiding the development of safe, light, and efficient materials essential for the future of aeronautical engineering.