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The challenge of controlling proper bonding during the manufacturing of a sandwichSandwich for ship structuresShip structure is a significant problem. A common type of damageDamage that frequently occurs is debondingDebonding, which happens due to the insufficient adhesive bond. To address these issues, this study aims to propose a method for localizing damageDamage on rectangular sandwichSandwich plates, representing ship hull plates, using the mode shape curvature square approach. This study investigates several damageDamage parameters, including five damageDamage locations and three multiple damagesDamage, through numerical free vibrationFree vibration analysis. The normalized displacement curvature along the length is extracted, and the changes in displacement curvature will be quantified using the central difference approximation to measure the damageDamage location at two measurementMeasurement patches. The objective is to examine the effect of these parameters on the accuracy level of damageDamage localization. The obtained result indicates that the proposed method demonstrates a high level of accuracy in locating the damageDamage. However, it is less accurate in detecting multiple instances of damageDamage.

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Debonding Localization Assessment on Rectangular Sandwich Plates Using the Mode Shape Curvature Square Method

  • 章节

  • 发表日期：

    2026年

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  • Tuswan Tuswan,
  • Achmad Zubaydi,
  • Bambang Piscesa,
  • Abdi Ismail,
  • Muhammad Luqman Hakim,
  • Rizky Chandra Ariesta,
  • Aditya Rio Prabowo

摘要

The challenge of controlling proper bonding during the manufacturing of a sandwichSandwich for ship structuresShip structure is a significant problem. A common type of damageDamage that frequently occurs is debondingDebonding, which happens due to the insufficient adhesive bond. To address these issues, this study aims to propose a method for localizing damageDamage on rectangular sandwichSandwich plates, representing ship hull plates, using the mode shape curvature square approach. This study investigates several damageDamage parameters, including five damageDamage locations and three multiple damagesDamage, through numerical free vibrationFree vibration analysis. The normalized displacement curvature along the length is extracted, and the changes in displacement curvature will be quantified using the central difference approximation to measure the damageDamage location at two measurementMeasurement patches. The objective is to examine the effect of these parameters on the accuracy level of damageDamage localization. The obtained result indicates that the proposed method demonstrates a high level of accuracy in locating the damageDamage. However, it is less accurate in detecting multiple instances of damageDamage.