PSI - Issue 34

ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

Procedia Structural Integrity 34 (2021) 20–25

© 2021 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 the scientific committee of the Esiam organisers The seaworthiness or FFS of a Ni Al bronze (NAB) marine propeller constructed by Wire Arc Additive Manufacturing (WAAM) has been scrutinized by a novel approach of combining conventional material qualification procedures with identification and data acquisition (DAQ) of essential WAAM process parameters. A 520 kg heavy marine propeller, with a diameter of 2 m, was manufactured by the South Korean company SY Metal under strict observation of DNV South Korea. In this report the authors are presenting essential WAAM process parameters and authentic mechanical properties of the Ni Al bronze WAAM marine propeller; benchmarked toward authentic NAB cast propeller data. The seaworthiness or FFS of Ni Al bronze (NAB) marin propeller constructed by Wire Arc Ad itive Manufacturing (WAAM) has b e scrutinized by a novel approach of combining conventional material qualification procedures with identification and data acquisition (DAQ) of essential WAAM process parameters. A 520 kg heavy marine propeller, with a diameter of 2 m, was manufactur d by the S uth Korea compa y SY Metal under str t observation of DNV South Korea. In is report the authors re presenting ssential WAAM p ocess par meters and uthentic mechanical properties of the Ni Al bronze WAAM marine propeller; benchmarked toward authentic NAB cast propeller data. Keywords: WAAM, propeller, CU3 propeller, ship propeller, NAB Abstract Seaworthiness, also known as Fitness For Service (FFS), assessment of marine structures and machinery components is performed in accordance with the actual ship classification so ciety’s Rules and/or Standards. The maritime industry is for the time being taking an interest into Additive Manufacturing (AM) for the sake of design and manufacturing cost optimization. Components of particular interest appear to be valves, heat exchangers and propellers. For conventional manufactured materials, for example cast, forged, rolled, and extruded copper alloys there are well established marine classification rules and standards. Recently, Ship Classification Rules and Standards for AM materials has been published. Abstract Seaworthiness, also known as Fitness For Service (FFS), assessment of marine structures and machinery components is performed in accordance with the actual ship classification so ciety’s Rules and/or Standards. The marit me industry is for the time being taking an intere t into Additive Manufacturing (AM) for th sake of design and manufacturing cost optimization. Component of particular interest appear to be valve , heat exchangers and propellers. For conventional manufactured materials, for example c st, forged, rolled, and ex rud d copper alloys there are well established marine classification rules and standards. Recently, Ship Classification Rules and Standards for AM materials has been published. The second European Conference on the Structural Integrity of Additively Manufactured Materials Additive manufactured marine component – Ni Al bronze propeller Ramesh Babu, Govindaraj 1,4 , Dr. Eva Junghans 2 ,Dr. Isak Andersen 1 , Young ki Lim 3 , Dr. Per Lindström 4 1 DNV, Norway; 2 DNV Germany; 3 Retired from DNV,South Korea; 4 Linnaeus University, Faculty of Technology, Sweden The second European Conference on the Structural Integrity of Additively Manufactured Materials Additive manufactured marine component – Ni Al bronze propeller Ramesh Babu, Govindaraj 1,4 , Dr. Eva Junghans 2 ,Dr. Isak Andersen 1 , Young ki Lim 3 , Dr. Per Lindström 4 1 DNV, Norway; 2 DNV Germany; 3 Retired from DNV,South Korea; 4 Linnaeus University, Faculty of Technology, Sweden

Keywords: WAAM, propeller, CU3 propeller, ship propeller, NAB

2452-3216 © 2021 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 the scientific committee of the Esiam organisers 10.1016/j.prostr.2021.12.039 2452 3216 © 2020 The Authors. Publis ed 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 the scientific committee of the Esiam organisers 2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the - - license (https://creativeco ons.org/licenses/by-nc-nd/4.0) eer-review under responsibility of the scientific committee of the Esiam organisers