PSI - Issue 79

Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 79 (2026) 81–87

28th International Conference on Fracture and Structural Integrity - 3rd Mediterranean Conference on Fracture and Structural Integrity Additive Manufacturing Applied to Maintenance Management

Suzana Lampreia a *, Teresa Morgado b , João Alves c a CINAV – Portuguese Naval Academy, Base Naval de Lisboa, Alfeite-Almada, Portugal; b Instituto Superior de Engenharia de Lisboa, Lisboa, Portugal; c UNIDEMI, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Monte da Caparica, Portugal

Abstract When an organization decides to still use assets with many years of operation, for example ships or equipment’s, some challenges in supply chain of spare parts and systems preservation may become high level of challenge, not only because it isn´t available, but also the access to components if ships are on sea. In the area of spare parts nowadays we have available 3D printers that enhance autonomous capacity and rapid responses to some anomaly on equipment´s. Even if it is resolved for a short-limited time, for a ship on sea, it may mean it can navigate safely to a shore and make a permanent repair restoring ship full performance. This article aims to explore the state of art of 3D metal printers, and the defects after printing spare part. Evaluating the development of technology and implementation on maintenance in industry and in ships, making an analysis and comparative study. By this research it is intended to analyze the appliance of this technology to components of electro-pumps that are implemented on ships.

© 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0)

Peer-review under responsibility of IGF28 - MedFract3 organizers Keywords: Addictive Manufacturing; Spare Parts; Ships; Defects

1. Introduction Nowadays, 3D printers for conception of ship models considering a modular construction (Choi et al., 2024), or equipment’s spare parts printing are a reality, also on research centers it is used to modulate and fabricate parts of systems or equipment to build prototypes to show research results. This may be a methodology that will reduce cost

* Corresponding author. Tel.: +351 21 0901 931 E-mail address: suzana.paula.lampreia@marinha.pt

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IGF28 - MedFract3 organizers 10.1016/j.prostr.2025.12.310