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All Journal IPTEK The Journal for Technology and Science BERKALA SAINSTEK J-Dinamika: Jurnal Pengabdian Kepada Masyarakat International Journal of Marine Engineering Innovation and Research Jurnal Jaring SainTek Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Archipelago Engineering Jurnal Jalasena
Akhmad Basuki Widodo
Universitas Hang Tuah Surabaya
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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Pemanfaatan Limbah Serat dari Pelepah Pisang sebagai Inovasi Bahan Komposit Laminasi Kapal Kayu Mu'aazar Habibie, Ahmad; Basuki widodo, Akhmad
Jurnal Jaring SainTek Vol. 4 No. 1 (2022): April 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/m7pxw490

Abstract

Fishing boats are vessels that almost 90% ofthe building materials are made of wood. Thenature of wood that is easily weathered andattacked by wood destroying organisms causesfishing vessels with wood materials to be easilydamaged. Banana trees are plants that thrivein Indonesia. In addition to the fruit, bananatree leaves are the part that is often used forreprocessing. However, the midrib of the treecannot be utilized optimally and will becomeunused waste. Therefore, the author has aninnovation using banana midrib fiber as acomposite material as a wood ship laminationmaterial. Therefore, researchers need to do atest, namely by tensile test of variations in fiberthickness of 1 layer, 2 layers, 3 layers on abanana midrib fiber composite and polyesterresin to measure the tensile strength value ofthe composite which refers to the ASTM 63802astandard.
Kekuatan Bending Pada Balok Laminasi Jati Putih Sebagai Material Pembuatan Kapal Kayu Yoga Savalas, Tegar; Basuki widodo, Akhmad
Jurnal Jaring SainTek Vol. 4 No. 2 (2022): Oktober 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/xs1re173

Abstract

Fishing boats are generally made of wood, but over time the availability of wood for shipbuilding began to become difficult to obtain, considering the increasingly expensive price for the type and quality of wood, such as teak. So that other wood alternatives are needed to replace teak, such as laminated white teak. White teak wood can be an option because it grows fast and is widely planted and has a texture that is almost the same as teak. Therefore, it is necessary to conduct research to determine the strength value of white teak laminate through bending testing. The purpose of this study was to determine the value of the bending strength of laminated white teak (Gemelina arborea) and the comparison results with natural teak (Tectona grandis). This study uses five types of variations with the same size 2x2x36cm, namely KJ (Teak Wood), KJP (White Teak Wood), LKJP (White Teak Lamination) two, three, and five layers referring to the Japanese Industrial Standard (JIS Z 2113). , 1963) to determine the value of the bending strength, then an analysis of the average value of the bending test results was carried out and compared with the bending value of teak (Tectona grandis). From the results of the tests carried out, the average value for KJ is 215.53 kg/cm2, KJP 173.35kg/cm2, LKJP 2 layers 176.75 kg/cm2, LKJP 3 180.15 kg/cm2, LKJP 5 149.56 kg/cm2. Based on this average value, Laminate white teak is still lower than the average value of natural teak.
Studi Kekuatan Impact Laminasi Sistem Sisip (Sandwich) Fiberglass dan Polyurethane Foam Heys Saputro, Okvani; Basuki widodo, Akhmad
Jurnal Jaring SainTek Vol. 4 No. 2 (2022): Oktober 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/maksv533

Abstract

Fiberglass boats are one of the options that are often used as an alternative to wooden boats. However, leaks on fiberglass boats are very difficult to handle at sea, so laminate using a sandwich system on fiberglass material and Polyurethane Foam can be a solution to deal with leaks on fiberglass boats at sea, where Polyurethane Foam can be a solution to prevent the entry of water when the fiberglass material experiences leaks or cracks in fiberglass boats. In this study, tests will be carried out on the laminated system of fiberglass inserts and polyurethane foam with variations of three types of polyol and isocyanate mixture compositions to form polyurethane foam materials, namely 1:1, 1:1.5, 1:2 using the charpy type impact test method with reference to on ASTM D256 93a to determine the impact value, then an analysis of the average value of the test results was carried out and compared with the impact value of fiberglass sandwich composites reinforced with palm fiber and epoxy. From the results of the impact test, the average 1:1 variance is 0.033j/cm3, and the 1:1.5 variance is 0.038j/cm3, 1:2 variance is 0.034j/cm3. From the test results, it was found that the average value of the variance of 1:1.5 was able to exceed the value of fiber composites reinforced with fibers and epoxy which had the same thickness on the skin
A Peningkatan Ketrampilan Pengrajin Kapal Kayu Tradisional di Desa Blimbing, Kecamatan Paciran, Kabupaten Lamongan, Jawa Timur Basuki Widodo, Akhmad; Subagio, Hari; Sugianto, Erik; Arifianto, M Fajar; Rahayu Dwi Hentanti Ningrum, Pramita
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 9 No 1 (2024): April
Publisher : Politeknik Negeri Jember

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

Abstract

Seiring dengan perkembangan teknologi dalam proses pembangunan kapal kayu, galangan kapal kayu tradisional selalu tertinggal dengan galangan kapal kayu modern. Pengrajin kapal kayu tradisional mengalami kesulitan memperoleh bahan baku yang baik dalam membangun sebuah kapal karena kebijakan pemerintah menekan kegiatan pembalakan liar. Kebanyakan kapal yang dibuat menggunakan bahan baku yang tidak memenuhi persyaratan Biro Klasifikasi, sehingga performa kapal tidak sesuai standar. Selain itu, para pengarajin tersebut biasanya memperoleh keahliannya secara turun temurun. Adanya kendala yang dihadapi tersebut, secara segi ekonomi galangan kapal rakyat ini tidak masuk kedalam kategori usaha yang sehat walaupun produktif. Padahal mereka memiliki peran besar dalam memenuhi kebutuhan kapal penangkap ikan dalam berbagai ukuran dan tidak menutut kemungkinan juga ternyata masih bayak pemuda lokal yang berpotensial. Oleh karena itu, galangan kapal kayu tradisional khususnya didaerah Paciran Lamongan perlu adanya sebuah program untuk menangani masalah ini. Salah satunya dengan cara memberikan pelatihan menganai proses pembangunan kapal kayu yang lebih ekonomis dan efisien ditinjau dari bahan baku yang digunakan. Program ini diharapkan akan mampu meningkatkan kemampuan sumber daya manusia (SDM) para pengrajin kapal kayu di wilayah tersebut menjadi lebih berkompeten dan professional, sehingga dapat memanfaatankan peluang material alternatif yang akan membantu usaha mereka lebih bernilai ekonomi tinggi.
Bending Strength of Apus Bamboo Fiber Reinforced Asphalt Composite Materials as Small Ship Susanto, Eko; Maheswara, Yulian; Widodo, Akhmad Basuki
BERKALA SAINSTEK Vol 10 No 4 (2022)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v10i4.32604

Abstract

Bamboo is generally widely used as a material or construction material in homes. However, the use of bamboo as a raw material for shipbuilding is not yet available. To make bamboo as a material in shipbuilding, the bamboo is assembled or made into a composite to meet class standards as a material for shipbuilding. In this study, the composites used were apus bamboo fiber and asphalt. The method of making the composite uses the hand lay-up method with variations of 1 layer of reinforcement, 3 layers of reinforcement, and 5 layers of reinforcement. The dimensions of the test specimen size refer to ASTM D 790-3 which is then carried out by bending tests to determine the strength of the material due to loading and the elasticity of the material. Furthermore, the results of the bending test will be analyzed using the Anova method and compared with the standard material class in ship construction. Results Asphalt composite material with apus bamboo fiber has the highest bending test value of 27,068 Mpa and the lowest bending test value of 25,998 Mpa. Based on these results, it is stated that the Bamboo reinforced asphalt (BRA) material has not been able to match and even exceed the Bamboo reinforced plastic (BRP) material in the woven, non-woven and random fiber variants. It is influenced by the diameter, and the strength of the shape between the fiber and the matrix.
Kekuatan Laminasi Bambu Betung Dan Kayu Akasia Sebagai Komponen Kapal Kayu Basuki Widodo, Akhmad; Purnomo, Revanda Indra
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.36456

Abstract

Wood is one type of basic material that is often used as the main material for conventional shipbuilding in Indonesia. However, the use of wood as a material for making wooden ships is more often than trees that are proven to be sturdy but are not yet at harvest age. Bamboo is a material that is quite flexible and strong as a basic material for making wooden boats in Indonesia. Bamboo laminate combined with wood material can affect the normal bending strength of wood. This research aims to determine the effect of the ratio of bamboo laminate as a stress barrier in wood on the bending strength of the combined laminate. The method used in this research is an experimental method of the number of ratios of betung bamboo laminate constituents to acacia wood using a bending machine test, from a ratio of 40% betung bamboo to 60% acacia wood, 50% betung bamboo to 50% acacia wood, and 60% betung bamboo. % with 40% acacia wood using JIS Z-2113 standards. In this research, the results obtained were that laminates with a ratio of 40% betung bamboo to 60% acacia wood had an average bending strength value of 321.04 kg/cm2 and an average elastic modulus of 22.32 kg/cm2. The bending strength of betung bamboo laminate with acacia wood increased at a ratio of 40% betung bamboo 60% wood and decreased at a ratio of 60% betung bamboo 40% wood. The highest bending strength value is in the laminate with a ratio of 40% betung bamboo 60% acacia wood.
The The effect of soaking coconut fiber in an alkaline solution on the tensile strength of composites Arisetya, Danny Arisetya Saputra; Widodo, Akhmad Basuki; Azhar, Ali; Baroroh, Intan; Kristiyono , Tri Agung
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 3, November 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

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

Abstract

Over time, the world's composite materials industry is increasingly developing. Generally, fiberglass-reinforced composite materials are developed. However, fiberglass fibers are expensive and not environtmentally friendly. The aim of this research was to determine the effect of composites reinforced with coconut fibers soaked in alkali. Specimen making using coconut fiber reinforcement that is pre-soaked using an alkaline chemical compound (Na) with a concentration of 5%. This study carried out tensile testing with variations of coconut fiber and soaked it in alkaline chemical compounds for 1-4 days. The measurement of the tensile strength value in the composite refers to the ASTM D638-02 standard and the tensile strength value will be analyzed using the ANOVA method to determine the significant effect on the soaking treatment of NaOH. The results of the tensile strength test in this study are far from the standard results that have been set by the Indonesian Classification Bureau (BKI) in 2021. So, coconut fiber with alkaline soaking for 1-4 days cannot be used as a substitute for fiberglass as a composite material reinforcement to be applied as the main material of the ship.
Co-Authors ahmad mu'aazar habibie habibie Ali Azhar Arifianto, M Fajar Arisetya, Danny Arisetya Saputra Bagiyo Suwasono Bagus Setiawan Permana Dwisetiono, Dwisetiono Eko Susanto Frisko Yulian Maheswara Frisko Yulian Maheswara Heys Saputro, Okvani Intan Baroroh Januar Putra Umba Kusairiawan Januar Putra Umba Kusairiawan Kristiyono , Tri Agung M. Rasyid, Daniel Maheswara, Yulian Mochamad Arief Sofijanto Mochammad Arief Sofijanto Mu'aazar Habibie, Ahmad Okvani heys saputro Panunggal, Eko Purnomo, Revanda Indra Rahayu Dwi Hentanti Ningrum, Pramita Ryan Andicha Firmansyah Sjarief Widjaja Soegiono, Soegiono Subagio, Hari Sugianto, Erik Yoga Savalas, Tegar