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    Item type:Publication,
    Effects of crevice corrosion induced by biofouling on the mechanical response of engineered plate designs as an idealization of naval and marine structures
    (Elsevier, 2025-08-08)
    Islami, Daffa Putra
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    This study investigates the reduction in the mechanical strength of stainless-steel plates resulting from crevice corrosion induced by biofouling. A hole model based on the geometric characteristics of damage from 6-, 12-, and 36-month immersion data was developed and applied in ABAQUS CAE using the analytical mapped field feature. Finite element method (FEM) simulations were conducted using two types of loading—concentrated and uniform—with 15 random hole configurations each. The results were validated using Kirchhoff-Love plate theory. The results showed that corrosion reduces plate strength, as evidenced by increased deflection, strain, and von Mises stress with immersion duration. Under concentrated loading for 36 months, deflection increased by 10.65 %, strain by 17.22 %, and von Mises stress by 8.87 %. Under uniform loading, the increases were greater: 14.38 %, 43.26 %, and 22.03 %, respectively. A concentrated stress pattern emerged at the center of the plate under concentrated loading and spread diagonally under uniform loading. These findings provide a basis for predicting residual strength and designing biofouling-resistant marine structures.
    Publicationtype: Journal Article
      32
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    Item type:Publication, Access status: with files ,
    Structural design parameters of laminated composites for marine applications : milestone study and extended review on current technology and engineering
    (Elsevier, 2024-12-01)
    Islami, Daffa Putra
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    Muzaqih, Aldi Fahli
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    The demand for the application of laminated composite materials is getting significant in the marine industry due to the advantages of use and life, maintenance, and efficiency of requirements and design over conventional materials. However, these materials are known to be highly susceptible to impact damage mainly due to out-of-plane impact events involving multiple interacting failure modes. The novel characteristics of the marine environment, such as extreme environments and long-term seawater influence, pose unique challenges to the resilience of these composites. Considering the expanding use of composite in complex marine structures and challenging marine environment conditions, this paper comprehensively reviews the composite research and development in marine applications to enable predictive models that can be safely used to achieve sustainable, efficient, robust, and safe design of marine engineering structures. The reviews cover the composite applications in the marine industry, novel marine characteristics for composite material, layering mechanism, material characterization, and damage mechanisms in composites due to various loading conditions in four different categories (delamination, matrix cracking, fiber breakage, and complete perforation), parametric joint method (vacuum and adhesive), and the failure criteria (debonding and interfacial delamination). This research brings valuable contributions in enriching the understanding and design of laminated composite structures by adopting the latest research trends. Applying advanced materials and numerical simulation has brought efficiency and effectiveness to analyzing laminated composite characteristics. Thus, this research opens new opportunities for further innovation and development in composite materials.
    Publicationtype: Review Article
      16  503