PSI - Issue 48

ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Structural Integrity Procedia 00 (2023) 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 48 (2023) 73–80

© 2023 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 IRAS 2023 organizers Abstract Ensuring a higher level of safety during the transportation and handling of LNG (liquefied natural gas) fuel is critical. At a cryogenic temperature that can reach -163°C, LNG is stored in specialized Type-C independent tanks, and any accidental gas leak may cause damage to the ship's structure. Prolonged exposure to LNG flow may cause steel to become more brittle, and an accidental load on the ship's structure may result in structural collapse due to brittle fracture, leading to significant losses. As a mitigation measure against the risk of accidental LNG release on LNG-fueled ships, the use of higher strength and cryogenic temperature-resistant steel is necessary. This paper presents a discussion on the use of steel for shipbuilding, with a focus on the potential risks associated with accidental LNG release during transportation and the performance of steels subjected to low temperatures. Based on existing research, the discussion is organized into three topics, namely experiments conducted at cryogenic temperatures, including tensile tests and Charpy V-notch impact tests, and material modeling using finite element analysis. The paper provides a procedure and method regarding to these topics. © 2023 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 the responsibility of the IRAS 2023 organizers Keywords: Brittle Fracture; DTBTT; Charpy V-Notch Test; Tensile Test; Cryogenic Temperature; Finite Element Analysis Abstract Ensuring a higher level of safety during the transportation and handling of LNG (liquefied natural gas) fuel is critical. At a cryogenic temperature that can reach -163°C, LNG is stored in specialized Type-C independent tanks, and any accidental gas leak may cause damage to the ship's structure. Prolonged exposure to LNG flow may cause steel to become more brittle, and an accidental load on the ship's structure may result in structural collapse due to brittle fracture, leading to significant losses. As a mitigation measure against the risk of accidental LNG release on LNG-fueled ships, the use of higher strength and cryogenic temperature-resistant steel is necessary. This paper presents a discussion on the use of steel for shipbuilding, with a focus on the potential risks associated with accidental LNG release during transportation and the performance of steels subjected to low temperatures. Based on existing research, the discussion is organized into three topics, namely experiments conducted at cryogenic temperatures, including tensile tests and Charpy V-notch impact tests, and material modeling using finite element analysis. The paper provides a procedure and method regarding to these topics. © 2023 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 the responsibility of the IRAS 2023 organizers Keywords: Brittle Fracture; DTBTT; Charpy V-Notch Test; Tensile Test; Cryogenic Temperature; Finite Element Analysis Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) A review on the hull structural steels for ships carrying liquefied gas: Materials performance subjected to low temperatures Haris Nubli a , Suryanto Suryanto b , Aprianur Fajri b , Jung Min Sohn a,c , Aditya Rio Prabowo b, * a Department of Marine Convergence Design Engineering, Pukyong National University, Busan, Republic of Korea b Department of Naval Architecture and Marine Systems Engineering, Pukyong National University, Busan, Republic of Korea c Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, Indonesia Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) A review on the hull structural steels for ships carrying liquefied gas: Materials performance subjected to low temperatures Haris Nubli a , Suryanto Suryanto b , Aprianur Fajri b , Jung Min Sohn a,c , Aditya Rio Prabowo b, * a Department of Marine Convergence Design Engineering, Pukyong National University, Busan, Republic of Korea b Department of Naval Architecture and Marine Systems Engineering, Pukyong National University, Busan, Republic of Korea c Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, Indonesia

* Corresponding author. Tel.: /; fax: /. E-mail address: aditya@ft.uns.ac.id 1. Introduction * Corresponding author. Tel.: /; fax: /. E-mail address: aditya@ft.uns.ac.id 1. Introduction

2452-3216 © 2023 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 IRAS 2023 organizers 2452-3216 © 2023 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 IRAS 2023 organizers The world fleet's current status indicates that the use of liquefied natural gas (LNG) as an alternative fuel remains dominant, with 923 out of 1,349 ships in operation and 534 out of 1,046 ships on order (DNV, 2021). However, the increasing number of LNG-fueled ships requires an adequate supporting structure and infrastructure, which shipping through harsh sea route will make the ship prone to structural damage (Cao et al., 2016; Prabowo et al., The world fleet's current status indicates that the use of liquefied natural gas (LNG) as an alternative fuel remains dominant, with 923 out of 1,349 ships in operation and 534 out of 1,046 ships on order (DNV, 2021). However, the increasing number of LNG-fueled ships requires an adequate supporting structure and infrastructure, which shipping through harsh sea route will make the ship prone to structural damage (Cao et al., 2016; Prabowo et al.,

2452-3216 © 2023 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 IRAS 2023 organizers 10.1016/j.prostr.2023.07.112