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A sandwichSandwich plate with a polyurethane coreCore is a lightweight materialSandwich material potentially used in marine applications. However, its application to complex ship structuresShip structure still has limitations. The lower-strength core material, compared to the faceplate can cause some problems. Potential damageDamage behavior must be studied to optimize the design and guarantee the long-term reliability of the sandwichSandwich structure. An experimentalExperiment study was conducted using the three-point flexuralThree-point flexural test method to predict the damageDamage behavior of sandwich plates. End Notch FlexuralEnd notch flexural (ENF) specimens with several variations of polyurethane coreCore thickness was tested to evaluate the damage characteristics. The experimentExperiment provides reliable bending displacement data correlating with the applied loadLoads. The results of this mechanical test explain the characteristic of damageDamage on sandwich plates with polyurethane coresCore due to the mode IIMode II loading.

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Three-Point Flexural Test Method to Investigate Damage Behavior of Polyurethane-Core Sandwich Ship Structures

  • 章节

  • 发表日期：

    2026年

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  • Heni Siswanti,
  • Achmad Zubaydi,
  • Bambang Piscesa,
  • Husein Syahab,
  • Rizky Chandra Ariesta,
  • Fiqi Qofi Azary

摘要

A sandwichSandwich plate with a polyurethane coreCore is a lightweight materialSandwich material potentially used in marine applications. However, its application to complex ship structuresShip structure still has limitations. The lower-strength core material, compared to the faceplate can cause some problems. Potential damageDamage behavior must be studied to optimize the design and guarantee the long-term reliability of the sandwichSandwich structure. An experimentalExperiment study was conducted using the three-point flexuralThree-point flexural test method to predict the damageDamage behavior of sandwich plates. End Notch FlexuralEnd notch flexural (ENF) specimens with several variations of polyurethane coreCore thickness was tested to evaluate the damage characteristics. The experimentExperiment provides reliable bending displacement data correlating with the applied loadLoads. The results of this mechanical test explain the characteristic of damageDamage on sandwich plates with polyurethane coresCore due to the mode IIMode II loading.