Studi Eksperimen Kekakuan Corrugated Core Steel Sandwich Panel Geladak Kapal Tunda Akibat Beban Lentur

Gymnastiar, Sani Ghali (2025) Studi Eksperimen Kekakuan Corrugated Core Steel Sandwich Panel Geladak Kapal Tunda Akibat Beban Lentur. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian numerik dan eksperimental serta pengembangan tentang mengenai sandwich panel masih dihadapkan pada isu keterbatasan kemampuan fabrikasi. Penelitian ini bermaksud untuk mengevaluasi kemampuan struktural desain sandwich panel dengan inti baja corrugated yang dinilai lebih mudah dan praktis dalam hal fabrikasi. Sandwich panel menggunakan variasi pada sudut corrugation yang terdiri dari variasi: 66 °, 72°, dan 88° dengan ketebalan pelat face dan core masing-masing 4 mm dan tinggi core 40 mm. Variabel yang diamati meliputi kekakuan lentur, modulus elastisitas lentur, tegangan lentur, dan rasio kekakuan terhadap berat struktur. Eksperimen three-point bending test memperlihatkan spesimen dengan respons yang berbeda dari spesimen lain, yaitu kejadian deformasi plastis yang lebih awal terjadi daripada spesimen lain dalam satu variasi, menyebabkan nilai tegangan luluh jauh lebih rendah. Perhitungan hasil data eksperimen menunjukkan bahwa kekakuan lentur tertinggi bernilai sebesar 15480,99 Nm2 dan rasio kekakuan terhadap berat tertinggi sebesar 3719,40 Nm2/kg, kekuatan bending 426.82 MPa dan tegangan crushing terbesar sebesar 340,20 MPa. Rasio stiffness-to-weight dapat menjadi acuan estimasi untuk perhitungan berat struktur untuk suatu nilai kekakuan yang dikehendaki. Penelitian lebih lanjut dapat dilakukan untuk meninjau nilai eknomis penerapannya pada beberapa jenis dan ukuran kapal.
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Numerical and experimental research and development on sandwich panels still faces the issue of limited fabrication capabilities. This study aims to evaluate the structural performance of a sandwich panel design with a corrugated steel core, which is considered more practical and more well-understood to fabricate. The sandwich panels used variations in corrugation angles, namely 66°, 72°, and 88°, with face and core plate thickness of 4 mm each and a core height of 40 mm. The observed variables include flexural stiffness, flexural modulus, flexural/bending stress, and the stiffness-to-weight ratio. The three-point bending test experiment showed some specimens behaving differently from others in the same variation group, with plastic deformation occurring earlier, resulting in significantly lower yield stress values. Experimental data calculations showed that the highest flexural stiffness was 15480,99 Nm², the highest stiffness-to-weight ratio was 3719,40 Nm²/kg, the highest bending strength was 426,82 MPa and the highest crushing stress was 340,20 MPa. The stiffness-to-weight ratio could serve as a parameter for estimating structural weight for a desired stiffness value. Further research can be conducted to evaluate the economic feasibility of its application on various types and sizes of ships.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	corrugated core steel sandwich panel, kekakuan lentur, three-point bending test, rasio stiffness-to-weight, flexural stiffness, stiffness-to-weight ratio
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture)
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Sani Ghali Gymnastiar
Date Deposited:	08 Aug 2025 01:42
Last Modified:	08 Aug 2025 01:48
URI:	http://repository.its.ac.id/id/eprint/127878

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