Identifikasi Kerusakan Material Sandwich Pada Pelat Sisi Lambung Kapal Menggunakan Neural Network

Ariesta, Rizky Chandra (2021) Identifikasi Kerusakan Material Sandwich Pada Pelat Sisi Lambung Kapal Menggunakan Neural Network. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Material sandwich merupakan pengembangan inovasi di bidang material maju. Penggunaan material sandwich dapat diaplikasikan pada struktur kapal. Aplikasi material sandwich membutuhkan persyaratan untuk dapat diaplikasikan pada struktur kapal. Dalam pengembangannya penelitian material sandwich dilakukan pada skala laboratorium untuk mendapatkan komposisi material yang sesuai. Tentunya dalam proses pengembangan material ini dapat mengalami kerusakan. Kerusakan mayoritas terjadi pada material inti yang mengakibatkan kesulitan dalam proses identifikasinya. Penelitian ini mengkaji metode identifikasi kerusakan pada pelat sandwich sisi lambung kapal. Identifikasi berbasis kerusakan dilakukan untuk mengetahui respon dari getaran terhadap kerusakan yang terjadi. Metode yang digunakan adalah pendekatan numerik dan eksperimen pengukuran getaran dan diverifikasi menggunakan neural network. Pemodelan numerik digunakan untuk menentukan kondisi batas yang sesuai dan ditransfer di pengujian eksperimen. Pemodelan kerusakan diasumsikan material mengalami core failure dengan variasi besar kerusakan pada core. Besarnya kerusakan pada core memiliki korelasi penurunan frekuensi natural akibat menurunnya kekakuan material sandwich. Oleh karena itu, tujuan metode neural network adalah untuk menentukan besar kerusakan dengan pendekatan cara berpikir manusia untuk memprediksi nilai besar kerusakan yang terjadi pada material sandwich. ==================================================================================================== Sandwich material is an innovative development in the field of advanced materials. The use of sandwich material can be applied to ship structures. The sandwich material application requires requirements to be applied to ship construction. In its development, sandwich material research is carried out on a laboratory scale to obtain the appropriate material composition. Of course, in the development process, that causes damage to the material. The majority of damage that occurred in the core material resulted in difficulties in the identification process. This study examines the method of identifying damage to the hull side sandwich plate. Damage-based identification developed to determine the response of vibration to the damage that occurs. The steps used are a numerical approach and vibration measurement experiments and verified using a neural network. Numerical modeling executes to determine the appropriate boundary conditions and validate with the experimental test. Damage modeling assumes that the material experiences core failure with a large variety of damage to the cores. The quantity of damage to the core material has a decreased natural frequency due to caused of reducing the stiffness of the sandwich material. The purpose of the neural network method is to determine the amount of damage with a human thinking approach to predict the value of the damage caused to the sandwich material.

Item Type: Thesis (Masters)
Uncontrolled Keywords: material sandwich, eksperimen, elemen hingga, neural network, sandwich material, experiment, finite element, neural networks
Subjects: Q Science > Q Science (General) > Q325.78 Back propagation
Q Science > QA Mathematics > QA336 Artificial Intelligence
Q Science > QA Mathematics > QA76.87 Neural networks (Computer Science)
Q Science > QC Physics > QC100.5 Measuring instruments (General)
Q Science > QC Physics > QC173.4.C63 Composite materials
Q Science > QC Physics > QC20.7.F67 Fourier transformations
Q Science > QC Physics > QC271.8.C3 Calibration
T Technology > T Technology (General) > T385 Visualization--Technique
T Technology > T Technology (General) > T57.5 Data Processing
T Technology > T Technology (General) > T57.62 Simulation
T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis
T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
T Technology > TA Engineering (General). Civil engineering (General) > TA355 Vibration.
T Technology > TA Engineering (General). Civil engineering (General) > TA418.16 Materials--Testing.
T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials.
T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design
V Naval Science > V Naval Science (General) > V220 Naval ports, bases, reservations, docks, etc.
V Naval Science > VC Naval Maintenance > VC 270-279 Equipment of vessels, supplier,allowances,etc
V Naval Science > VK > VK200 Merchant marine--Safety measures
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture)
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM298.5 Shipbuilding industri. Shipyards
Divisions: Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36101-(S2) Master Thesis
Depositing User: Rizky Chandra Ariesta
Date Deposited: 09 Mar 2021 09:14
Last Modified: 09 Mar 2021 09:14
URI: https://repository.its.ac.id/id/eprint/83844

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