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All Journal IPTEK The Journal of Engineering Jurnal Teknologi dan Riset Terapan (JATRA) International Journal of Marine Engineering Innovation and Research Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam INTERNATIONAL JOURNAL OF MECHANICAL COMPUTATIONAL AND MANUFACTURING RESEARCH Journal of Applied Mechanical Technology (JAMET)
Danang Cahyagi
Politeknik Negeri Batam
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

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Study of Shipboard Power Distribution System: Review on an Aplication of AC Zonal Distribution Danang Cahyagi; Eddy S. Koenhardono
IPTEK The Journal of Engineering Vol 4, No 1 (2018)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v4i1.a3734

Abstract

The shipboard power distribution system has been developed in order to make it more efficient. AC zonal distribution system is one of the options in order to achieve the objection. This study aims to observe the shipboard application with AC zonal distribution system. The distribution system is modeled, simulated, analyzed, and compared with conventional system. Based on simulation, the AC zonal distribution system provide higher reliability, better power continuity, and more stable power generation. Therefore, development of the zonal distribution system continues to bring succeed in every mission. However, the system has several challenges for future work such as more complex transmission system, higher voltage drops, and the tendency to have instability power distribution when one generator fails.
Stability Analysis of Double Axis Retractable Solar Panel Mechanism for Harbour Tug Application Danang Cahyagi; Sapto Wiratno Satoto; Ihsan Musyary; Haris Susmana; Ranjit Ranjit; Wanda Cantika Putri; Muhammad Regie
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.v8i2.16802

Abstract

Due to the use of fossil fuels in recent decades, maritime researchers and stakeholders have started to become concerned about energy efficiency and environmental protection. The larger social and economic facets of society may suffer as a result of these problems. In an effort to offer a remedy, this research created the B-Solar Wings, the double axis retractable solar panel mechanism design concept for harbor tug applications. B-Solar Wings was created using a variety of strategies to make the most of harbour tugs' constrained space for solar energy absorption while taking into account challenging ergonomic and safety concepts. B-Solar Wings can assemble 7 solar panel units for a total power of 3150 based on the design results. In order to assess the viability of stability brought on by the installation and use of solar panels, this study also offers a modeling analysis. The B-Solar Wings are stable in terms of stability, according to the results of the modeling and validation with the guidelines stated in IMO A. 749 (18). The minimum required value for one of the categories, code 3.1.2.1: Area 0 to 30, is 3.15 m.deg, and the harbour tug's stability value is 17.11 m.deg in the folded position and 17.10 m.deg in the full-open position. Solar energy produced by solar panels can be stored in a battery and integrated into the main distribution panel through multiple stages of voltage conversion and stabilization in the power system for B-Solar Wings.
Pelatihan Penggunaan Software Autocad sebagai Upaya Peningkatan Kompetensi Siswa SMK Kota Batam Cahyagi, Danang; Restu, Fedia; Yuniarsih, Nidia; Nova, Muhammad Andi; Saputra, Hendra; Satoto, Sapto Wiratno; Mutiarani, Mutiarani; Aryswan, Adhe; Fyona, Annisa; Havwini, Tian; Fadilah, Nurul; Rahman, Kholilur
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 24, No 2 (2024): Suluah Bendang: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.05790

Abstract

Kota Batam merupakan daerah dengan julukan kota industri. Sejak setelah bertranformasi menjadi kawasan industri kota Batam memiliki berbagai macam indutri yang dibangun, sehingga terbuka banyak peluang kerja yang tersedia. Salah satu keberlanjutan yang perlu didukung yaitu ketersediaan tenaga kerja terampil yang memiliki kompetensi dibidang keteknikan. Gambar dan penggunaan software CAD menjadi salah satu kompetensi yang perlu dipenuhi oleh masyarakat. Upaya menyediakan tenaga kerja terampil dapat dilihat dari tersedianya sekolah menengah kejuruan. Meskipun demikian, keterbatasan fasilitas praktik menjadi salah satu kendala yang dihadapi sebagian sekolah dalam melaksanakan layanan pendidikannya. Kegiatan Pelatihan Penggunaan Software AutoCAD kepada siswa/i SMK Kota Batam Tahun 2024 kemudian hadir menjadi salah satu solusi untuk dapat membantu sekolah dalam meningkat mutu pendidikan vokasi di Kota Batam. Pelatihan ini didanai secara internal oleh Politeknik Negeri Batam dan telah dilaksanakan di Politeknik Negeri Batam pada 23 – 26 Juli 2024. Adapun mitra peserta pengabdian ini adalah dari siswa dan guru SMK S Aljabar Batam, SMK S Kartini, SMK N 9 Batam. Beberapa luaran yang telah diselesaikan pada kegiatan pengabdian ini adalah terselenggaranya kegiatan dan penyusunan modul pelatihan. pemberitaan pada media masa, HKI modul, poster dan video kegiatan.
RANCANG BANGUN BRACKET PLATFORM PADA MESIN WELD MANIPULATOR Irawan, Benny Haddli; Cahyagi, Danang; Alwi, Abdullah; Hakim, Rahman
Jurnal Teknologi dan Riset Terapan (JATRA) Vol. 7 No. 1 (2025): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v7i1.8917

Abstract

A welding manipulator is a specialist apparatus engineered for welding extensive and elongated pipe plates on both interior and exterior surfaces, as well as in vertical and horizontal positions. During the assembly process, a challenge occurs when the platform is excessively distanced from the nozzle, complicating the operator's task with the welding manipulator. Brackets are an effective option to mitigate hazards and address issues throughout the cutting process. The aim of this research is to design and evaluate the safety of the bracket utilized for the platform component of the welding manipulator. The research utilizes Finite Element Analysis (FEA) to assess the simulated values of the safety factor and stress distribution. The findings demonstrate that the bracket design satisfies strength criteria, producing a maximum stress value of 98,327,504.00 N/m². The recorded maximum displacement is 1.094 mm, and the maximum strain is 0.00022. The computed safety factor is 2.1, indicating that the design parameters surpass established safety criteria.
Solid block to assembly block conversion on a welding Marbun, Abri Andry Saresa; Purba, Adi Syahputra; Ramadhan, M. Noviriandi; Andaresta, Windy; Cahyagi, Danang
International Journal of Mechanical Computational and Manufacturing Research Vol. 14 No. 2 (2025): August: Mechanical Computational And Manufacturing Research
Publisher : Trigin Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/computational.v14i2.267

Abstract

Block damage often occurs due to the pressing process and the presence of residual welding dirt on the slug so that a repair process is needed by means of grinding. If there is damage to the solid block, repairs are carried out on all sides of the block so that this is less effective and efficient in repair time. This research was conducted by changing the design of solid blocks into assembly blocks which aims to make the process of repairing blocks effective and efficient. To find out the results of the differences between solid blocks and assembly blocks, a trial was carried out by calculating the repair process time using a grinding machine with a depth of 0.04 mm. The results of the solid block repair process trials obtained an average of 397 seconds while the assembly blocks obtained an average of 248 seconds. Thus cutting the repair process time by 149 seconds. With this design change, the effectiveness and efficiency of block repair time is obtained.
​​Pengaruh G96 dan G97 terhadap Kekasaran Permukaan ST 37 dan S45C pada Pembubutan CNC​ pujo leksonowati, nur fitria; Pamungkas, Nurman; Baharudin, Budi; Cahyagi, Danang; Van Gunawan, Leo; Adimas, Adimas
Journal of Applied Mechanical Technology Vol 4 No 1 (2025): JOURNAL OF APPLIED MECHANICAL TECHNOLOGY (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/journalofappliedmechanicaltechnology.v4i1.308

Abstract

ABSTRACT – This study aims to compare the effects of Constant Cutting Speed (G96) and Constant Spindle Speed (G97) modes on the surface roughness of ST 37 and S45C materials in step-turning processes using a CNC lathe. A comparative experimental method was employed, measuring surface roughness (( R_a )) at stepped diameters (16 mm, 24 mm, 32 mm, and 35 mm) with a Mitutoyo Surface Tester SJ-210. Results indicate that G96 mode produces lower surface roughness, with average ( R_a ) values of 2.22 µm (S45C) and 2.27 µm (ST 37) in the N6 class, compared to G97 mode with ( R_a ) values of 3.08 µm (S45C) and 3.03 µm (ST 37) in the N7 class. G96 mode is superior due to its ability to automatically adjust rotational speed based on diameter, whereas in G97 mode, small diameters with high rotation (1273 rpm) increase roughness due to vibration or heat. This study recommends using G96 mode for optimal surface smoothness in step-turning of similar materials. rning of similar materials.
Pemberdayaan Pendidikan Vokasional: Pelatihan Mesin Laser cutting untuk Keterampilan Desain dan Fabrikasi di SMKN 9 Batam Leksonowati, Nur Fitria Pujo; Batubara, Ninda Hardina; Purba, Adi Syahputra; Cahyagi, Danang; Butar, Hendra Butar; Wijayanti, Ita; Manurung, Meilani Mandalena; Dzulfikar, Mohamad Alif; Stefani, Windy; Ulfah, Nurul; Aryswan, Adhe; Pamungkas, Nurman; Khollilurrahman, Kholillurrahman
Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Vol. 6 No. 2 (2024): Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/abdimaspolibatam.v6i2.7016

Abstract

This community service initiative aims to enhance the skills of vocational school students in utilizing Laser cutting machines, serving as a platform for students in the Design and Visual Communication department of SMKN 9 Batam to fabricate products based on their own designs in preparation for the professional world. The participants involved in this initiative consist of 78 students from the aforementioned department. The community service program is structured through various stages, encompassing initiation, preparation, execution, activity review, and the compilation of a final report. Enthusiastically engaged, the participants, primarily from the Design and Visual Communication department, had previously focused their learning solely on the design phase. However, through this community service project, they actively participated in the fabrication process of designs they had created. Utilizing CAD applications, the designs were transformed into tangible products using acrylic as the raw material, ensuring that the resulting products align with the envisioned design. This initiative provides a valuable avenue for students to bridge the gap between design and fabrication, fostering practical skills crucial for their future endeavors in the workforce.
Simulation of Solar Energy Harvesting on a 25-Meter Electric Passenger Ferry Cahyagi, Danang; Prasetyo, Naufal Abdurrahman; Siregar, Jansen Anugrah; Ferdinand, Floribertus Rio
International Journal of Marine Engineering Innovation and Research Vol 10, No 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i2.22860

Abstract

This study investigates the integration of a solar photovoltaic system on the passenger ferry E.V. Calestia operating along Manila’s Pasig River. The ferry, equipped with dual 400 kW electric motors and a battery bank of 1848 kWh, is supplemented by 20 solar panels installed on its top deck. Using a Simulink-based simulation model, the research estimates the power output and cumulative energy generation based on panel specifications, solar irradiance, and system efficiency. Results show a maximum instantaneous power output of approximately 3 kW during peak sunlight and a total weekly energy generation of around 150 kWh. These findings demonstrate the potential of solar power to enhance the ferry’s energy sustainability by reducing reliance on conventional charging and lowering emissions, thus promoting greener maritime transport solutions in urban river environments.
Design and Fabrication of 6 Meter Fiberglass Boat for Coastal Water Tourism in Batam Saputra, Hendra; Cahyagi, Danang; Perkasa, Veryawan Nanda; Purnama, Dedi; Nurmannsyah, Oxa; Saputra, Rangga; Ferari, Regita; Al Fauzy, Faaza Ibnu; Fadillah, Muhammad
International Journal of Marine Engineering Innovation and Research Vol 9, No 2 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.20342

Abstract

As an area with geographical conditions consisting of many islands, marine tourism in Batam has become a special attraction which has been developed through hotel investment, and coastal water tourism and travel-related services. Even though the demand is quite high, the availability of tourism boats to support coastal water tourism has low participation of the domestic industry. Therefore, this study aims to develop a tourism boat prototype designed and fabricated for coastal water tourism and travel-related services in Batam. This study began by studying the characteristics of coastal water, characteristics of tourism needs, design and development, and fabrication activities. Fiberglass is the material in shipbuilding because of the ease of the manufacturing process, and produces less waste and emissions. Based on the study results, it was found that the tourism boat needed is a 5 person capacity tourism boat with a length of 6 meters which can require 1 x 45 HP of power to reach a speed of 25 knots.As an area with geographical conditions consisting of many islands, marine tourism in Batam has become a special attraction which has been developed through hotel investment, and coastal water tourism and travel-related services. Even though the demand is quite high, the availability of tourism boats to support coastal water tourism has low participation of the domestic industry. Therefore, this study aims to develop a tourism boat prototype designed and fabricated for coastal water tourism and travel-related services in Batam. This study began by studying the characteristics of coastal water, characteristics of tourism needs, design and development, and fabrication activities. Fiberglass is the material in shipbuilding because of the ease of the manufacturing process, and produces less waste and emissions. Based on the study results, it was found that the tourism boat needed is a 5 person capacity tourism boat with a length of 6 meters which can require 1 x 45 HP of power to reach a speed of 25 knots.
Design and Fabrication of 6 Meter Fiberglass Boat for Coastal Water Tourism in Batam Hendra Saputra; Danang Cahyagi; Veryawan Nanda Perkasa; Dedi Purnama; Oxa Nurmannsyah; Rangga Saputra; Regita Ferari; Faaza Ibnu Al Fauzy; Muhammad Fadillah
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.4997

Abstract

A tourist boat is one of the amenities frequently utilized in coastal water tourism activities in Batam. Boats used for tourism are frequently used for fishing or simply to take in the beauty of marine tourism. Thus, one of the requirements that must be developed for local tourism is the availability of boats for water tourism. The goal of this research is to create a design and prototype for a six-meter water tourism boat that can serve as a public reference within the same case study. Because of its advantages in terms of cost and readily available materials, fiberglass was selected as a material for design and fabrication. Because of its benefit of being a simple fabrication process, the fiber reinforced plastic method was also selected for use in the process. A six-meter fiberglass boat prototype was created through a multi-phase process that began with design, moved on to hydrostatic and power requirement prediction analyses, and ended with mold based fabrication. The study concludes that 40 horsepower (29.5 kW) is needed to power a 6-meter fiberglass boat that can accommodate five people and reach a maximum speed of 25 kN. Five to seven layers of fiberglass were used to successfully complete the ship fabrication process.
Co-Authors Adhe Aryswan Adi Syahputra Purba Adimas, Adimas Al Fauzy, Faaza Ibnu Alwi, Abdullah Andaresta, Windy Annisa Fyona Baharudin, Budi Batubara, Ninda Hardina Butar, Hendra Butar Dedi Purnama Dzulfikar, Mohamad Alif Eddy Setyo Koenhardono, Eddy Setyo Faaza Ibnu Al Fauzy Fadillah, Muhammad Fedia Restu Ferari, Regita Ferdinand, Floribertus Rio Floribertus Rio Ferdinand Haris Susmana Hendra Saputra Hendra Saputra Ihsan Musyary Irawan, Benny Haddli Ita Wijayanti Jansen Anugrah Siregar Kholilur Rahman, Kholilur Khollilurrahman, Kholillurrahman Leo Van Gunawan Manurung, Meilani Mandalena Marbun, Abri Andry Saresa Muhammad Andi Nova Muhammad Fadillah Muhammad Regie Naufal Abdurrahman Naufal Abdurrahman Prasetyo Nidia Yuniarsih Nur Fitria Pujo Leksonowati Nurman Pamungkas Nurmannsyah, Oxa Nurul Fadilah, Nurul Nurul Ulfah Oxa Nurmannsyah Perkasa, Veryawan Nanda Purnama, Dedi Rahman Hakim Ramadhan, M. Noviriandi Rangga Saputra Ranjit Ranjit Ranjit Regita Ferari Sapto Wiratno Satoto Saputra, Hendra Saputra, Rangga Siregar, Jansen Anugrah Sugeng Santoso Tian Havwini Veryawan Nanda Perkasa Wanda Cantika Putri Windy Stefani