Mula, Id Adha (2017) Analisis Statis Dan Dinamis Core Sandwich Panel Berbahan Material Limbah Cangkang Telur Pada Konstruksi Pelat Datar Kapal - Static And Dynamic Analysis Of Core Material Sandwich Panel Using Egg Shell Powder Aplication For Ship Construction. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kemajuan bidang perkapalan sejalan dengan perkembangan material pembuat kapal itu sendiri. Salah satu material maju yang memiliki karakteristik yang sesuai untuk konstruksi kapal adalah material Sandwich. Pengembangan material sandwich di Indonesia belum maksimal terutama pada bagian intinya (core). Pada penelitian ini material sandwich dikembangkan dengan material inti berbahan unsaturated polyester resyn dengan material limbah cangkang telur. Material Cangkang Telur sebagai campuran dijadikan serbuk dan disaring dengan ukuran mesh 50 kemudian dilakukan karbonisasi. Komposisi material inti yang diteliti menggunakan campuran serbuk cangkang telur dengan perbandingan 0%, 10%, 20%, 30%, 35% dan 40% dari berat total.
Identifikasi karakteristik material inti dilakukan dengan eksperimen yang meliputi pengujian komposisi kimia, densitas, kekuatan tarik, kekerasan, dan kekuatan tekan material. Komposisi campuran cangkang telur sebanyak 30% menghasilkan core material dengan sifat mekanik yang tertinggi dengan nilai kuat Tarik 28,132 Mpa, Modulus 300,3 Mpa dan elongation 22,6%.
Identifikasi material sandwich dilakukan dengan menggunakan 2 komposisi core dengan sifat mekanikal tertinggi yaitu 30% dan 20%. Karakteristik material dan sifat dinamis sandwich diperoleh dari pengujian densitas, lentur dan getaran. Dari pengujian lentur didapatkan tegangan tertinggi pada campuran 30% sebesar 95,063 N/mm2 dan Semakin banyak campuran serbuk cangkang telur semakin tinggi nilai massa jenis. Untuk mendapatkan sifat dinamis material sandwich dilakukan uji getaran pada kondisi material utuh dan cacat. Hasil dari pengujian didapatkan bahwa kondisi dalam utuh diperoleh frekuensi natural sebesar 487,5 Hz pada 20% campuran dan frekuensi natural 443,71 Hz pada 30% campuran sedangkan pada kondisi cacat diperoleh frekuensi natural sebesar 439,9 Hz dan 429,2 Hz
Material konstruksi Sandwich panel akan daplikasikan pada geladak utama kapal Kontainer dengan simulasi menggunakan software computer berbasis metode elemen hingga. Dari hasil simulasi didapatkan bahwa pengurangan berat konstruksi sandwich pada satu panel dibandingkan dengan konstruksi konvensional adalah sebesar 6,6 % sandwich untuk campuran 20% dan 4,8% untuk campuran 30%.
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Advances in shipping technology are in line with the development of the shipbuilding material itself. One of the advanced materials that have the appropriate technology for ship construction is Sandwich material. Sandwich material for ship industry in Indonesia need to be studied, especially in its core. In this research, sandwich material is developed by using core material made from unsaturated polyester resin with waste eggshell material as the filler. The eggshell material is processed into powder and filtered using mesh size of 50, and then the powder is carbonized. The core materials are composed of resin and the eggshell powder with the ratio of 0%, 10%, 20%, 30%, 35% and 40% of total weight.
The identification of core material characteristics is performed by experiments that include tests of chemical composition, density, tensile strength, hardness, and compressive strength of the material. The result of this study on the core shows that the more eggshell powder in the composition the higher the mass density. The composition of 30% eggshell mixture produced core material with the highest mechanical properties with tensile strength of 28.132 MPa, Modulus of Elasticity of 300.3 MPa and elongation of 22.6%.
Tests on sandwich plate with steel face sheets are conducted on the structure with 2 core compositions having the first and second highest mechanical properties, these are 30% and 20% eggshell compositions. The sandwich materials are characterized using density and bending tests. To obtain their dynamic properties, vibration tests on sandwich plate in non-defect and defect conditions are performed. The results of the bending test show that the highest stress of 95.063 N /mm2 is obtained in the structure with 30% eggshell composition. The vibration tests show that in the non-defect condition, the natural frequency of the sandwich structure with 20% eggshell powder composition is 487.5 Hz and that of 30% eggshell powder composition is 443.71 Hz. In the defect condition their natural frequency for 20% and 30% eggshell compositions are 439.9 Hz and 429.2 Hz respectively.
Simulation on the application of sandwich panels on the main deck of container ship is performed using computer software based on finite element method. It is found that the weight reduction of sandwich construction on one panel compared with conventional construction is 6,6% for 20% eggshell composition and 4.8% for 30% eggshell composition.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTKe 620.118 Mul a-1 3100018078670 |
| Uncontrolled Keywords: | Sandwich material, eggshell powder, core material, static test, vibration test, Material Sandwich, Serbuk Cangkang Telur, material inti |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC205 Harbors--Design and construction. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36101-(S2) Master Thesis |
| Depositing User: | Id Adha Mula |
| Date Deposited: | 04 Jan 2019 08:35 |
| Last Modified: | 19 Feb 2021 05:12 |
| URI: | http://repository.its.ac.id/id/eprint/58696 |
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