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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Journal of Mechanical Engineering Science and Technology INVOTEK: Jurnal Inovasi Vokasional dan Teknologi INOVTEK POLBENG Wave: Jurnal Ilmiah Teknologi Maritim Specta Journal of Technology International Journal of Marine Engineering Innovation and Research Construction and Material Journal Jurnal Riset Teknologi Pencegahan Pencemaran Industri Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Maritime Park: Journal Of Maritime Technology and Socienty PIKAT Indonesian Journal of Maritime Technology or abbreviated (ISMATECH) Collaborate Daily Book Series WAVE: Jurnal Ilmiah Teknologi Maritim
Rodlian Jamal Ikhwani
Institut Teknologi Kalimantan
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

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KEKUATAN FIBERGLASS REINFORCED PLASTIC (FRP) SEBAGAI BAHAN GADING KAPAL KAYU Alamsyah Alam; Rodlian Jamal Ikhwani; Taufik Hidayat; Suardi Suardi
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 15 No. 1 (2021)
Publisher : National Research and Innovation Agency (BRIN Publishing)

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Abstract

Penggunaan baja untuk menggantikan kayu Bitti sebagai bahan konstruksi gading kapal kayu dinilai tidak praktis karena melalui proses pembentukan dan pemeliharaan, sehingga penggunaan bahan lain seperti FRP sangat penting. Penelitian ini bertujuan untuk mengetahui ukuran dan bentuk penampang bahan FRP yang sesuai sebagai pengganti gading kayu ditinjau dari segi kekuatan. Metode yang digunakan yaitu elemen hingga (FEM) dan dianalisis menggunakan metode eksperimen numerik pada software. Penelitian ini bersifat kualitatif dengan mengoptimalkan bahan FRP dengan bentuk penampang I beam, I beam+flange, box of hole beam, T beam, dan U beam+flange sebagai pengganti bahan kayu Bitti. Hasil penelitian menunjukkan gading kayu Bitti memiliki elastisitas (E) = 9534.02 MPa dan momen inersia penampang (I) = 2197x104 mm4 terjadi tegangan maksimum (?k) = 7.682 N/mm2 dan lendutan maksimum (?) = 0.1 mm, untuk faktor keamanan gading kayu Bitti (Sf) = 1.28, sedangkan bahan FRP pengganti gading kayu dengan nilai (E) = 69000 MPa dapat digunakan penampang I beam dengan nilai I = 316x104 mm4, I beam+flange dengan nilai I = 288x104 mm4, box of hole beam dengan nilai I = 317x104 mm4, T Beam dengan nilai I = 478 x104 mm4, serta U beam+flange dengan nilai I = 375x104 mm4, terjadi tegangan maksimum (?k) = 52.00 N/mm2 dengan lendutan maksimum (?) < 0.082 mm dan faktor keamanan (Sf) = 1.28. Bahan FRP pengganti kayu gading membutuhkan momen inersia penampang sebesar 1/7~1/5 kali lebih kecil dari momen inersia penampang kayu gading dengan elastisitas tujuh kali lebih besar dari kayu gading. Nilai ini dapat dijadikan patokan untuk ukuran kapal di atas ataupun di bawah 70 GT ketika akan menggunakan bahan FRP sebagai pengganti gading kayu.
Assessment of Coconut Petiole Fiber–Reinforced Hybrid Composites as Sustainable Materials for Ship Components Pawara, Muhammad Uswah; Alamsyah, Alamsyah; Arifuddin, Andi Mursid Nugraha; Ikhwani, Rodlian Jamal; Syam, Muhammad Anjas; Pratama, Fernanda Wahyu; Mas`ud M, Ahmad Azwar
Indonesian Journal of Maritime Technology Vol. 3 No. 2 (2025): Volume 3 Issue 2, December 2025
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v3i2.8481890

Abstract

The use of synthetic fibers in composite materials in the shipping industry provides mechanical advantages but produces non-biodegradable waste. This encourages the development of more environmentally friendly natural fiber-reinforced composite materials. This study examines the physical properties and tensile strength of composites made from a mixture of coconut petiole fibers and fiberglass, including the effect of immersion in seawater and freshwater for 30 days. The results show that the composites experience an average water absorption of 0.074% (freshwater) and 0.065% (seawater). Tensile tests show average tensile strength values ​​of 35.837 MPa (freshwater), 31.890 MPa (seawater), and 41.290 MPa (without immersion). Immersion in an aqueous medium reduces the tensile strength due to interfacial degradation between the fiber and the matrix. Coconut petiole fiber–fiberglass composites have the potential to be an alternative material for ship components with competitive and environmentally friendly mechanical characteristics
Numerical Investigation of the Laying of Airbag Arrangements on Launching Barges Alamsyah; Christian Hendra Gonawan; Rodlian Jamal Ikhwani; Taufik Hidayat; Habibi; Wardina Suwedy
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 2 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.5445

Abstract

Ship-launching technology is developing rapidly in an effort to reach a point of economic efficiency, time efficiency, security, and flexibility. On the one hand, risks to the process of launching ships using airbags are still present and can occur. Exploding airbags due to the inability to withstand the load has implications for structural damage. Excessive pressure on the airbags can cause structural deformation. This study aims to determine the effect of airbag pressure on the strength of the ship's structure. This study uses finite element-based software to analyze stresses and deformations in ship construction when interacting with airbags. From this study, it was found that the number of airbags used in the two-row layout and cross-over arrangement was 14, with the status of the airbags in terms of load distribution being safe (not broken). The maximum stress value obtained from the simulation on the two-row arrangement layout is 11.62 MPa when it is right in the frame and 9.83 MPa when it is between frames. As well as in the cross-over arrangement layout, the maximum stress is 20.24 MPa when in the frame and 13.84 MPa when in between frames. This phenomenon occurs because of the stress concentration in the frame.
Co-Authors ,, Alamsyah Abdul Mujib Syadzali Ade Ray Siahaan Agus Budianto Alamsyah Alamsyah - Alamsyah Alamsyah alamsyah alamsyah amalia ika wulandari Amalia Ika Wulandari Amalia Ika Wulandari Andi Mursid Nugraha Arifuddin Andi Mursyid Nugraha Arifuddin Andi Nadia Himaya Arifuddin, Andi Mursid Nugraha Arifuddin, Mursid Nugraha As’ad, Miftachus Surur Aulia, Ade Putri Rezki Chris Jeremy Verian Sitorus Christian Hendra Gonawan Faisal Mahmuddin Habibi Habibi Habibi Hariyono, Hariyono Irfan Fadillah Irvan Setiawan Kumandang, Niti Gede Kustiwansa, Harlian Kusuma, I Putu Arya Luh Putri Adnyani M. Uswah Pawara Manik, Aljoiden Mas`ud M, Ahmad Azwar Maulana, Mohammad Khafid Nugraha, Andi Mursid Pratama, Fernanda Wahyu Rahmasari, Nindy widia Devi Ratna Septati Yani Ryo Herlambang Samsu Dlukha N Saputra, Muhammad Rizky Siswahyudianto Suardi Suardi Syahab, Husein Syam, Muhammad Anjas Tasrief, Muhdar Taufik Hidayat Wardina Suwedy wulandari, amalia ika