The International Association of Classification Societies (IACS) has introduced a new recommendation, Rec.186, aimed at establishing a standardized approach for the integration of Additive Manufacturing (AM), also known as 3D printing, within marine and offshore sectors. With advancements in manufacturing technologies, the maritime industry is increasingly leveraging these innovations to improve efficiency and sustainability in shipbuilding and offshore operations. Additive Manufacturing serves as a modern alternative to traditional manufacturing methods, such as casting and welding.
It functions by fusing materials from a digital 3D model into physical prints, creating complex objects layer by layer. This method offers distinct advantages, including enhanced design flexibility, reduced material waste, and the ability for on-demand production. These characteristics enable localized manufacturing and customization, catering to the specific needs of marine and offshore applications.
Rec. 186: Additively Manufactured Metallic Parts for Marine and Offshore Applications outlines a comprehensive framework for the qualification, approval, and certification of metallic parts produced through AM processes. This recommendation encompasses various key components of AM, such as part design, material selection, and inspection/testing.
By incorporating established international standards, it ensures alignment with existing Unified Requirements, particularly concerning materials and welding, thereby prioritizing reliability and safety. The recommendation details essential areas of focus, including various AM processes (like Powder Bed Fusion and Directed Energy Deposition), tiered testing levels based on application criticality, qualification criteria for feedstocks, and best practices in part design and qualification. The guide also addresses inspection methodologies to detect potential imperfections.
As IACS advances the application of AM within the marine sector, it aims to enhance safety and innovation in shipbuilding and offshore engineering. Alexandre Astruc, Chair of IACS’ Expert Group on Materials & Welding, emphasizes the transformative potential of additive manufacturing in addressing complex maritime challenges while underscoring the importance of a reliable verification framework.