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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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Fatigue Analysis of 5000 GT Ferry Ro-Ro’s Car Deck Using Finite Element Method Wulandari, Amalia Ika; Rahmasari, Nindy widia Devi; Adnyani, Luh Putri; ,, Alamsyah; Ikhwani, Rodlian Jamal
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 3 (2021): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i3.39268

Abstract

Ro-Ro Passenger Ship type crossing ship is a ship that is operated to connect 2 (two) ports. On the Ro-Ro ship there is a car deck as one of the vital construction structures, because it is used to support the vehicle load on it. This study aims to determine the value of fatigue life in car deck construction by reviewing hot spot stress areas that are prone to cracking. The value of the fatigue analysis is taken from the greatest stress value and the shortest cycle is taken at each plate thickness variation. The method used is the finite element method (FEM) by varying the thickness of the car deck plate assisted by using finite element based software. The results showed the highest maximum stress was found on car deck 1 with a thickness of 80% (9.6 mm) which was 241.16 Mpa, while the lowest minimum stress was found on car deck 2 with a thickness of 110% (13 mm) which was 103.07 Mpa. The highest value of fatigue life is found in car deck 2 with a plate thickness of 110% (13 mm) of 74.23 years with a stress cycle of 1350000 times, while the lowest fatigue life value is found in car deck 1 with a plate thickness of 80% (9.6 mm) of 7.63 years with a voltage cycle of 220000 times
KEKUATAN FIBERGLASS REINFORCED PLASTIC (FRP) SEBAGAI BAHAN GADING KAPAL KAYU Alamsyah Alam; Rodlian Jamal Ikhwani; Taufik Hidayat; Suardi
Wave: Jurnal Ilmiah Teknologi Maritim Vol. 15 No. 1 (2021)
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jurnalwave.v15i1.4719

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.
Perencanaan Sistem Refrigerasi Pada Ruang-ruang Penyimpanan Kapal Tipe Refrigerated Cargo Ship Sebagai Pendukung Ekspor Buah-Buahan Tropis Indonesia Rodlian Jamal Ikhwani Jamal Rodlian
INOVTEK POLBENG Vol 9, No 2 (2019): INOVTEK VOL.9 NO 2 - 2019
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.71 KB) | DOI: 10.35314/ip.v9i2.1142

Abstract

Buah tropis yang paling penting secara komersial di pasar internasional adalah pisang, nanas, mangga, dan pepaya. Indonesia memiliki kemampuan untuk menghasilkan semua buah-buahan tersebut karena beriklim tropis. Penelitian ini bertujuan untuk merancang sistem refrigasi pada kapal yang dapat digunakan untuk menyimpan buah-buahan tropis dalam jangka panjang. Metode yang digunakan adalah metode pembanding dan parent ship method. Proses desainnya meliputi pengaturan umum kapal kargo berpendingin, dimensi ruang penyimpanan buah-buahan dan konfigurasi (spesifikasi dan jumlah) evaporator untuk semua ruang penyimpanan di kapal yang masing-masing dapat digunakan untuk penyimpanan pisang, nanas, mangga, dan pepaya serta perhitungan beban pendinginan untuk ruangan. Hasil peneltian didapatkan yakni dengan volume ruang penyimpanan yang sama, nilai beban pendinginan, kebutuhan daya listrik, dan jumlah evaporator yang dibutuhkan secara berurut dengan nilai tertinggi yaitu buah pisang, pepaya, nenas, dan mangga. Informasi ini bisa digunakan dalam pengambilan keputusan tentang manakah jenis buah yang akan diangkut oleh kapal ini jika suatu saat keempat jenis buah tersebut tersedia untuk keperluan ekspor. Sehingga apabila suatu saat harga-harga di pasar internasional dari keempat jenis buah tersebut adalah sama atau tidak terpaut jauh, maka urutan prioritas buah untuk diekspor tersebut secara berturut-turut adalah buah mangga, nenas, pepaya, dan pisang. Dengan urutan prioritas ini, bisa diharapkan bahwa daya listrik yang dibutuhkan adalah lebih rendah, sehingga kebutuhan biaya operasi juga akan menjadi lebih rendah. 
Collision Analysis Of A Self Propelled Oil Barge (SPOB) Using Finite Element Method Amalia Ika Wulandari; Rodlian Jamal Ikhwani; Suardi suardi suardi; Ratna Septati Yani; Andi Nadia Himaya; alamsyah alamsyah
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 19, No 2 (2022): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v19i2.45417

Abstract

Many ship accidents at sea cause oil spills that can pollute the sea especially ships carrying crude oil that experiences a collision, for example SPOB ship. SPOB is a ship that transports crude palm oil in Indonesia. Basically, the ship is collided with a jetty due to ocean waves hitting the hull as consequently the ship hull experienced a deformation. This research will be carried out on SPOB ships that experienced a collision with a jetty using two variations of the model, namely the jetty with fenders and without fenders with variation of speed. This study aims to determine the stress and deformation that occurs in the hull when experiencing a collision with a jetty. The method used in this study is a nonlinear method using Ansys. The results reveal that increasing speed of the ship is in line with stress and deformation values.
A Finite Element Analysis of Structural Strength of Ferry Ro-Ro’s Car Deck M. Uswah Pawara; Alamsyah Alamsyah; Rodlian Jamal Ikhwani; Ade Ray Siahaan; Andi Mursyid Nugraha Arifuddin
invotek Vol 22 No 1 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i1.959

Abstract

Ferry Ro-Ro is a type of ship used to carry passengers and vehicles. This ship has several decks such as navigation decks, passenger decks, and car decks. The car deck is subject to a heavy load as it should accommodate vehicle loads. This study aims to conduct a finite element analysis to determine the stress and deformation experienced on the car deck of the Ferry Ro-Ro and determine the safety factor based on BKI (Indonesian Classification Bureau). The method used in this study is the Finite Element Method (FEM) which has been applied in the finite element based-applications namely Ansys Workhbench. The simulations are carried out using the software by varying the thickness of the car deck’s plate, the plate is subjected to pressure loads which are car loads accommodated by the car deck. Moreover, the fixed support is applied in the deck during the simulation. Based on the simulation results of variations of 90, 100, and 110% plate thickness. It is obtained that the smallest plate experienced maximum stress and the obtained safety factor of all plate thickness variations was satisfied the BKI Standard.
Hull Strength Investigation of Traditional Boat “Sandeq” Using Numerical Experiment: English Andi Mursid Nugraha Arifuddin; Alamsyah; Muhammad Uswah Pawara; Rodlian Jamal Ikhwani; Agus Budianto; Irfan Fadillah
SPECTA Journal of Technology Vol. 6 No. 2 (2022): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (823.13 KB) | DOI: 10.35718/specta.v6i2.492

Abstract

Sandeq is an Indonesian traditional boat that is built instead of applying principal spiral design and technical calculation in its design and construction. Its construction relies on the inherited skills of the builders. This study aims to investigate the structural strength of the boat with numerical experiments by computer software that applying the finite element method (FEM). Longitudinal and transversal hull strength will be examined for four Sandeg models. The computational model of the boat hull has been designed and run with varieties of hull lengths using the software. The simulation results showed that the obtained longitudinal and transversal stresses were less than the allowable stress of the material based on the classification rules. In the transversal strength analysis, the ratio of working stress to material stress was 6,37%, 7,20%, and 5,98% on the sandeq A, B, and C respectively. As for longitudinal stress in hogging condition, the ratio was 2,77% 3,35%, 0,93%, and 0,72% on the sandeq A, B, C, and D respectively. for sagging condition, the ratio was 2,11%, 2,49%, 0,52%, and 0,69%.
Numerical Investigation of the Laying of Airbag Arrangements on Launching Barges Alamsyah bin Muhammad Saleh; Christian Hendra Gonawan; Rodlian Jamal Ikhwani; Taufik Hidayat; Habibi Habibi; Wardina Suwedy
International Journal of Marine Engineering Innovation and Research Vol 8, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.16737

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.
PENYULUHAN PRINSIP K3 PADA PEMBANGUNAN KAPAL KAYU TRADISIONAL KUB. PANRITA LOPI KABUPATEN PENAJAM PASER UTARA Andi Mursid Nugraha Arifuddin; Rodlian Jamal Ikhwani; Amalia Ika Wulandari; Taufik Hidayat
Jurnal Pengabdian Kepada Masyarakat ITK (PIKAT) Vol. 4 No. 1 (2023): PIKAT : Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Institut Teknologi Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/pikat.v4i1.729

Abstract

Industri galangan kapal kayu tradisional di Kabupaten Penajam Paser Utara merupakan salah satu usaha mandiri yang dilakukan oleh masyarakat setempat dengan memanfaatkan keterampilan membuat kapal kayu yang diperoleh secara turun temurun dari keluarganya. Masyarakat pengrajin kapal tersebut tergabung dalam sebuah kelompok usaha bersama (KUB) yaitu KUB Panrita Lopi. Produk yang dihasilkan oleh pengrajin kapal bahkan dapat menembus pasar nasional di Indonesia. Namun, dari observasi lapangan yang dilakukan terdapat satu faktor pendukung penting dalam usaha meningkatkan kegiatan produksi yaitu penerapan standar keselamatan dan kesehatan kerja (K3) di lokasi mitra yang masih rendah seperti tidak menggunakan alat perlindungan diri ketika melakukan aktivitas mekanik dan mobilisasi logistik. Sistem yang dibangun pada KUB masih sangat tradisional sehingga perlu didorong untuk terus meningkat. Salah satunya dengan peningkatan sistem keselamatan dan kesehatan kerja bagi para pengrajin. Melalui metode penyuluhan prinsip K3 yang dilakukan oleh Tim Pengabdian Masyarakat ITK, para pengrajin kapal kayu akan memiliki pengetahuan terkait keamanan dan keselamatan dalam membangun kapal kayu. Hasil penyuluhan memperlihatkan pemahaman para pengrajin terhadap K3 mengalami peningkatan sekitar 83% yang awalnya hanya 27%.
Fatigue Life Assessment of Deck Barge Construction Using Numerical Simulation Methods Alamsyah Alamsyah; Irvan Setiawan; Amalia Ika Wulandari; Rodlian Jamal Ikhwani; Suardi Suardi
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 4, Number 2, July 2023 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v4i2.26541

Abstract

Barges are used as the main means of transporting heavy goods such as nickel, wood, coal and other materials that are placed on the main deck and have implications for stress values ​​and construction fatigue life. This study uses a numerical simulation method with the help of ANSYS software. The load simulations given to the main deck construction of the barge are 50% load, 75% load, and 100% load (full load). The results of the numerical simulation detected that the largest stress occurred when the 100% load condition was 190.7 MPa. The stress with 75% load is 160.21 MPa and the stress for 50% load is 129.73 MPa. The fatigue life at 100% load is 10.66 years with a stress cycle of 170000 times, 75% load is 13.49 years with a stress cycle of 300000, and a 50% load is 21.16 years with the a stress cycle of 700000. -
Testing of Carbon Steel Pipe and Stainless Steel Duplex Pipes of Welding Joints : A Cost and Time Perspective Alamsyah Alamsyah; Ryo Herlambang; Rodlian Jamal Ikhwani; Taufik Hidayat; Wardina Suwedy
Collaborate Engineering Daily Book Series Vol. 1 No. 1 June (2023): Chapter Improve Competence To Complete The Requirements For International
Publisher : Collaborate

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In the welding process, it is not uncommon for a defect or discontinuity to occur in the welding results. Common defects on the surface are undercut, concavity, incomplete penetration, spatter, burn-through, and mismatch. While defects in internal welds that are often found during testing are porosity, worm holes, slag inclusions, incomplete fusion, and cracks, To obtain pipeline results that comply with the specifications set by the welding engineer and ASME or ASTM standards, it is necessary to test surface cracks and inside cracks using the non-destructive test (NDT) method, namely the dye penetrant test and radiography test, to determine the results of welding at pipe joints. In addition, it is also necessary to know the time and cost required for each method in the testing process. The results of the radiography test and penetrant test on carbon steel pipe welding joints showed porosity welding defects 1 mm long. Weld defects in duplex stainless steel pipes were not found. Then the results of the total testing time using the radiography test take 18% longer than testing using the penetrant test. Furthermore, the total costs that need to be incurred during the test are found to be 2~3 times more expensive than the cost of the penetrant test.
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