PSI - Issue 47

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 133–141

© 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 IGF27 chairpersons Abstract Energy needs in Indonesia are always growing with the development of the population. 80% of Indonesia’s plants are still fossil fueled, with the increasing price of fuel oil, alternative energy that is new and renewable energy (NRE) is needed. OTEC is one of the NRE groups that is very suitable in Indonesia because it utilizes the difference in sea depth temperature with sea surface temperature. The geographical location of Indonesia is important in this factor. Therefore, further research is needed to realize OTEC plants in Indonesia. The pipe that serves to deliver water from a depth of 1000 m to the surface is called a Cold Water Pipe (CWP). At great depths, hydrostatic pressure occurs, thus. In this paper, the author will discuss carbon fiber sandwich material Nomex honeycomb against hydrostatic pressure in cold water pipes in ocean thermal energy conversion with three-point bending testing. The method used is testing in the laboratory testing followed by benchmarking with numerical simulation using ABAQUS software. After all tests and numerical simulations were carried out, numerical simulation results were obtained with a difference below 10% with laboratory test results with a mesh configuration of 2.25 mm for cores and 1 mm for facing. © 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 IGF27 chairpersons Keywords: OTEC; CWP; sandwich materials; numerical analysis; laboratory testing 27th International Conference on Fracture and Structural Integrity (IGF27) Three-point bending assessment of cold water pipe (CWP) sandwich material for ocean thermal energy conversion (OTEC) Andreal Muhammad Naufal a , Aditya Rio Prabowo a, *, Teguh Muttaqie b , Arif Hidayat c Ristiyanto Adiputra b , Nurul Muhayat a , Syamsul Hadi a , Indri Yaningsih a a Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta 57126, Indonesia b Research Center for Hydrodynamics Technology, National Research and Innovation Agency (BRIN), Surabaya 60117, Indonesia c Research Center for Advanced Material, Research Organization for Nanotechnology and Materials, BRIN, Banten, 15314, Indonesia

* Corresponding author. Tel.: +62-271-632-163; fax: +62-271-632-163. E-mail address: aditya@ft.uns.ac.id (A.R.P.)

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 IGF27 chairpersons

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 IGF27 chairpersons 10.1016/j.prostr.2023.07.004