Experimental assessment of the robustness in fire of lightweight ship bulkheads

Thomas Hulin*, Vasileios Karatzas, Pierrick Mindykowski, Grunde Jomaas, Christian Berggreen, Dan Lauridsen, Anders Dragsted

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Full-scale tests of A-60 steel and FRD-60 aluminium and FRP bulkheads exposed to fire were carried out in order to compare their respective behaviours in terms of their ultimate load-carrying capacity beyond the prescribed 60 min threshold under thermomechanical loadings. These three materials were chosen as implementation within the SOLAS framework requires documenting a level of robustness equivalent to that of steel. This is a complex process since robustness is not clearly defined and no procedure exists to quantify it. It was found that robustness can be quantified as a time-to-mechanical-failure and is highly dependent on the fire scenario (load, fire exposure, and boundary conditions). Regulatory codes and design practices were found to disregard specific properties of alternative materials, and only consider one default scenario, which is not representative of a real-life situation. It was concluded that specific properties of alternative materials should be used and equivalence in terms of safety should be documented through performance-based design, for instance risk analyses, instead of forcing requirements originally developed for steel structures on their lightweight counterparts.
Original languageEnglish
JournalMarine Structures
Volume64
Pages (from-to)161-173
ISSN0951-8339
DOIs
Publication statusPublished - 2019

Keywords

  • FRP bulkheads
  • Lightweight bulkheads
  • Robustness
  • SOLAS vessels
  • Fire
  • Alternative design

Cite this

Hulin, T., Karatzas, V., Mindykowski, P., Jomaas, G., Berggreen, C., Lauridsen, D., & Dragsted, A. (2019). Experimental assessment of the robustness in fire of lightweight ship bulkheads. Marine Structures, 64, 161-173. https://doi.org/10.1016/j.marstruc.2018.11.005
Hulin, Thomas ; Karatzas, Vasileios ; Mindykowski, Pierrick ; Jomaas, Grunde ; Berggreen, Christian ; Lauridsen, Dan ; Dragsted, Anders. / Experimental assessment of the robustness in fire of lightweight ship bulkheads. In: Marine Structures. 2019 ; Vol. 64. pp. 161-173.
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abstract = "Full-scale tests of A-60 steel and FRD-60 aluminium and FRP bulkheads exposed to fire were carried out in order to compare their respective behaviours in terms of their ultimate load-carrying capacity beyond the prescribed 60 min threshold under thermomechanical loadings. These three materials were chosen as implementation within the SOLAS framework requires documenting a level of robustness equivalent to that of steel. This is a complex process since robustness is not clearly defined and no procedure exists to quantify it. It was found that robustness can be quantified as a time-to-mechanical-failure and is highly dependent on the fire scenario (load, fire exposure, and boundary conditions). Regulatory codes and design practices were found to disregard specific properties of alternative materials, and only consider one default scenario, which is not representative of a real-life situation. It was concluded that specific properties of alternative materials should be used and equivalence in terms of safety should be documented through performance-based design, for instance risk analyses, instead of forcing requirements originally developed for steel structures on their lightweight counterparts.",
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Hulin, T, Karatzas, V, Mindykowski, P, Jomaas, G, Berggreen, C, Lauridsen, D & Dragsted, A 2019, 'Experimental assessment of the robustness in fire of lightweight ship bulkheads', Marine Structures, vol. 64, pp. 161-173. https://doi.org/10.1016/j.marstruc.2018.11.005

Experimental assessment of the robustness in fire of lightweight ship bulkheads. / Hulin, Thomas; Karatzas, Vasileios; Mindykowski, Pierrick; Jomaas, Grunde; Berggreen, Christian; Lauridsen, Dan; Dragsted, Anders.

In: Marine Structures, Vol. 64, 2019, p. 161-173.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Experimental assessment of the robustness in fire of lightweight ship bulkheads

AU - Hulin, Thomas

AU - Karatzas, Vasileios

AU - Mindykowski, Pierrick

AU - Jomaas, Grunde

AU - Berggreen, Christian

AU - Lauridsen, Dan

AU - Dragsted, Anders

PY - 2019

Y1 - 2019

N2 - Full-scale tests of A-60 steel and FRD-60 aluminium and FRP bulkheads exposed to fire were carried out in order to compare their respective behaviours in terms of their ultimate load-carrying capacity beyond the prescribed 60 min threshold under thermomechanical loadings. These three materials were chosen as implementation within the SOLAS framework requires documenting a level of robustness equivalent to that of steel. This is a complex process since robustness is not clearly defined and no procedure exists to quantify it. It was found that robustness can be quantified as a time-to-mechanical-failure and is highly dependent on the fire scenario (load, fire exposure, and boundary conditions). Regulatory codes and design practices were found to disregard specific properties of alternative materials, and only consider one default scenario, which is not representative of a real-life situation. It was concluded that specific properties of alternative materials should be used and equivalence in terms of safety should be documented through performance-based design, for instance risk analyses, instead of forcing requirements originally developed for steel structures on their lightweight counterparts.

AB - Full-scale tests of A-60 steel and FRD-60 aluminium and FRP bulkheads exposed to fire were carried out in order to compare their respective behaviours in terms of their ultimate load-carrying capacity beyond the prescribed 60 min threshold under thermomechanical loadings. These three materials were chosen as implementation within the SOLAS framework requires documenting a level of robustness equivalent to that of steel. This is a complex process since robustness is not clearly defined and no procedure exists to quantify it. It was found that robustness can be quantified as a time-to-mechanical-failure and is highly dependent on the fire scenario (load, fire exposure, and boundary conditions). Regulatory codes and design practices were found to disregard specific properties of alternative materials, and only consider one default scenario, which is not representative of a real-life situation. It was concluded that specific properties of alternative materials should be used and equivalence in terms of safety should be documented through performance-based design, for instance risk analyses, instead of forcing requirements originally developed for steel structures on their lightweight counterparts.

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KW - Fire

KW - Alternative design

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