Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait

Lukman Firmansyah; Rizky Chandra Ariesta; Dony Setyawan; Mohammad Nurul Misbah

doi:10.1109/OETIC67587.2025.11512834

Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait

Lukman Firmansyah^*
, Rizky Chandra Ariesta
, Dony Setyawan
, Mohammad Nurul Misbah

^*Corresponding author for this work

Department of Naval Architecture
Institut Teknologi Sepuluh Nopember

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Structural fatigue is a critical factor that influences a ship's operational lifespan and safety. As the vessel ages, its structural strength gradually deteriorates due to cyclic loads from cargo and ocean waves. If not properly addressed, these repeated loads can cause material cracking and eventually lead to structural failure. The ship analyzed in this study is over 20 years old, making a structural strength evaluation necessary to determine its remaining fatigue life. To estimate the ship’s fatigue life, a spectral-based fatigue method is employed using wave data from the past 10 years. The analysis is carried out under two loading conditions: full load and empty load, by considering eight wave heading directions. The frequency range used spans from 0.1 to 1.8 rad/s, in accordance with the recommendations of the American Bureau of Shipping (ABS). The wave heading angles range from -180° to 180°, with 45° intervals. The calculation results show that the total fatigue life of the ship in its current condition, under combined loading scenarios, is estimated to be 6 years.

Original language	English
Title of host publication	Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference
Subtitle of host publication	Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	9-15
Number of pages	7
ISBN (Electronic)	9798331587857
DOIs	https://doi.org/10.1109/OETIC67587.2025.11512834
Publication status	Published - 2025
Event	2025 IEEE Ocean Engineering Technology and Innovation Conference, OETIC 2025 - Hybid, Purwokerto, Indonesia Duration: 16 Dec 2025 → …

Publication series

Name	Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025

Conference

Conference	2025 IEEE Ocean Engineering Technology and Innovation Conference, OETIC 2025
Country/Territory	Indonesia
City	Hybid, Purwokerto
Period	16/12/25 → …

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

RoRo
fatigue life
ship structure
spectral-based fatigue
wave loads

Access to Document

10.1109/OETIC67587.2025.11512834

Cite this

Firmansyah, L., Ariesta, R. C., Setyawan, D., & Misbah, M. N. (2025). Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait. In Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025 (pp. 9-15). (Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/OETIC67587.2025.11512834

Firmansyah, Lukman ; Ariesta, Rizky Chandra ; Setyawan, Dony et al. / Spectral Based Fatigue Analysis of Roro Ship Structure : Case Study in the Madura Strait. Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. pp. 9-15 (Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025).

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abstract = "Structural fatigue is a critical factor that influences a ship's operational lifespan and safety. As the vessel ages, its structural strength gradually deteriorates due to cyclic loads from cargo and ocean waves. If not properly addressed, these repeated loads can cause material cracking and eventually lead to structural failure. The ship analyzed in this study is over 20 years old, making a structural strength evaluation necessary to determine its remaining fatigue life. To estimate the ship{\textquoteright}s fatigue life, a spectral-based fatigue method is employed using wave data from the past 10 years. The analysis is carried out under two loading conditions: full load and empty load, by considering eight wave heading directions. The frequency range used spans from 0.1 to 1.8 rad/s, in accordance with the recommendations of the American Bureau of Shipping (ABS). The wave heading angles range from -180° to 180°, with 45° intervals. The calculation results show that the total fatigue life of the ship in its current condition, under combined loading scenarios, is estimated to be 6 years.",

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author = "Lukman Firmansyah and Ariesta, \{Rizky Chandra\} and Dony Setyawan and Misbah, \{Mohammad Nurul\}",

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Firmansyah, L, Ariesta, RC , Setyawan, D & Misbah, MN 2025, Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait. in Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025. Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025, Institute of Electrical and Electronics Engineers Inc., pp. 9-15, 2025 IEEE Ocean Engineering Technology and Innovation Conference, OETIC 2025, Hybid, Purwokerto, Indonesia, 16/12/25. https://doi.org/10.1109/OETIC67587.2025.11512834

Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait. / Firmansyah, Lukman; Ariesta, Rizky Chandra ; Setyawan, Dony et al.
Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025. Institute of Electrical and Electronics Engineers Inc., 2025. p. 9-15 (Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Spectral Based Fatigue Analysis of Roro Ship Structure

T2 - 2025 IEEE Ocean Engineering Technology and Innovation Conference, OETIC 2025

AU - Firmansyah, Lukman

AU - Ariesta, Rizky Chandra

AU - Setyawan, Dony

AU - Misbah, Mohammad Nurul

PY - 2025

Y1 - 2025

N2 - Structural fatigue is a critical factor that influences a ship's operational lifespan and safety. As the vessel ages, its structural strength gradually deteriorates due to cyclic loads from cargo and ocean waves. If not properly addressed, these repeated loads can cause material cracking and eventually lead to structural failure. The ship analyzed in this study is over 20 years old, making a structural strength evaluation necessary to determine its remaining fatigue life. To estimate the ship’s fatigue life, a spectral-based fatigue method is employed using wave data from the past 10 years. The analysis is carried out under two loading conditions: full load and empty load, by considering eight wave heading directions. The frequency range used spans from 0.1 to 1.8 rad/s, in accordance with the recommendations of the American Bureau of Shipping (ABS). The wave heading angles range from -180° to 180°, with 45° intervals. The calculation results show that the total fatigue life of the ship in its current condition, under combined loading scenarios, is estimated to be 6 years.

AB - Structural fatigue is a critical factor that influences a ship's operational lifespan and safety. As the vessel ages, its structural strength gradually deteriorates due to cyclic loads from cargo and ocean waves. If not properly addressed, these repeated loads can cause material cracking and eventually lead to structural failure. The ship analyzed in this study is over 20 years old, making a structural strength evaluation necessary to determine its remaining fatigue life. To estimate the ship’s fatigue life, a spectral-based fatigue method is employed using wave data from the past 10 years. The analysis is carried out under two loading conditions: full load and empty load, by considering eight wave heading directions. The frequency range used spans from 0.1 to 1.8 rad/s, in accordance with the recommendations of the American Bureau of Shipping (ABS). The wave heading angles range from -180° to 180°, with 45° intervals. The calculation results show that the total fatigue life of the ship in its current condition, under combined loading scenarios, is estimated to be 6 years.

KW - RoRo

KW - fatigue life

KW - ship structure

KW - spectral-based fatigue

KW - wave loads

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DO - 10.1109/OETIC67587.2025.11512834

M3 - Conference contribution

AN - SCOPUS:105041868261

T3 - Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025

SP - 9

EP - 15

BT - Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference

PB - Institute of Electrical and Electronics Engineers Inc.

Y2 - 16 December 2025

ER -

Firmansyah L, Ariesta RC , Setyawan D , Misbah MN. Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait. In Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025. Institute of Electrical and Electronics Engineers Inc. 2025. p. 9-15. (Proceeding - 2025 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources, OETIC 2025). doi: 10.1109/OETIC67587.2025.11512834

Spectral Based Fatigue Analysis of Roro Ship Structure: Case Study in the Madura Strait

Abstract

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Keywords

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