What is it about?
Structural health monitoring requires a damage detection or damage identification method to determine the presence, size & location of the damage. The database on the presence of damage, size of damage and / or location of damage is obtained from the natural frequency difference of an intact material / structure and damaged material / structure. The natural frequency variable is obtained through the Experimental Modal Analysis or through the Finite Element Method. In this paper, natural frequency is obtained through the Finite Element Method / Finite Element Analysis.
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Why is it important?
The needs of ships to operate more efficiently have been investigated by engineers. One of the most interest is to use lightweight material for the ship hull structures. By using this lightweight material, the overall ship weight can be reduced and eventually increases the ship payload. In this paper, the lightweight material being investigated is the sandwich plate. The use of a sandwich plate on ships structures should be accompanied by the damage identification system to ensure structural integrity, reliability, and safety to be used safely.
Perspectives
I hope this paper can become a knowledge base for carrying out damage identification / damage detection / structural health monitoring on ship structures / marine structures, where researchers rarely pay attention to this.
Abdi Ismail
Institut Teknologi Sepuluh Nopember
Read the Original
This page is a summary of: Vibration-based damage identification for ship sandwich plate using finite element method, Open Engineering, August 2020, De Gruyter,
DOI: 10.1515/eng-2020-0086.
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