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Analisa Pengaruh Perubahan Pitch Ratio dan Jumlah Blade Terhadap Kavitasi Pada Controllable Pitch Propeller (CPP) Muhammad Danil Arifin; Danny Faturachman; Fanny Octaviani
Jurnal Sains & Teknologi Fakultas Teknik Universitas Darma Persada Vol. 9 No. 2 (2019): Jurnal Sains & Teknologi
Publisher : Fakultas Teknik Universitas Darma Persada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70746/jstunsada.v9i2.71

Dalam bidang rekayasa kavitasi didefinisikan sebagai proses pembentukan fase uap dari suatu cairan ketika cairan tersebut mengalami penurunan tekanan pada suhu sekeliling (ambient temperature) yang tetap. Kavitasi merupakan fenomena yang merugikan dalam operasinal kapal, karena menyebabkan banyak kerugian. Pengaruh yang merugikan tersebut berupa menurunnya efisiensi propeller, merusak material propeller, kecepatan kapal menjadi lebih rendah dan menyebabkan getaran dan kebisingan. Oleh karena itu dalam penelitian ini dilakukan analisa kavitasi pada Controllable Pitch Propeller (CPP) dengan melakukan variasi jumlah daun yaitu 3 , 4 dan 5 daun, variasi diameter yaitu 30, 40 dan 50 cm, serta variasi pitch yaitu 0.4, 0.6, dan 0.8. Metode yang digunakan dalam penelitian ini adalah metode simulasi. Hasil simulasi menunjukkan bahwa perbedaan putaran propeller memiliki pengaruh terhadap besarnya nilai perbedaan tekanan. Semakin meningkat putaran propeller maka nilai dari perbedaan tekanannya akan semakin meningkat pula. Perbedaan design propeller memiliki pengaruh terhadap area kavitasi yang terjadi pada propeller. Prosentase area kavitasi yang terjadi pada propeller memiki kecenderungan naik pada jumlah blade, putaran serta pitch yang semakin meningkat pula.

STUDI LITERATUR TINJAUAN PENGGUNAAN GENERATOR PACKAGE SET DARURAT PADA SEBUAH KAPAL Danny Faturachman; Shahrin Febrian
Jurnal Sains & Teknologi Fakultas Teknik Universitas Darma Persada Vol. 10 No. 1 (2020): Jurnal Sains & Teknologi
Publisher : Fakultas Teknik Universitas Darma Persada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70746/jstunsada.v10i1.80

Landing Craft Tank (LCT) is a type of attack landing craft to ship tanks on the waterfront. In general, LCT 415 Gross Tonnage (GT) ships are not ready to sail using emergency generators. According to Biro Klasoifikasi Indonesia (BKI) rules, only ships with more than 500 GT are required to have an emergency generator package. However, for the LCT 415 GT to gained higher level of safety, the ship is equipped with an emergency generator package installation. This generator is used as an electric power source which is used by the ship's compass in off condition. The purpose of this study wants to learned the electrical power requirements on the LCT 415 GT to determine the required emergency generator package specifications and provide an overview of the generator's placement on the main deck. Emergency generator packages are arranged to improve ship safety, crew and cargo. In an emergency, LCT 415 GT ships required a total power of 29,9408 kW. The basic package of emergency generator set selection is based on the total emergency power following BKI regulations as well as the generator safety engine package set when extreme weather conditions.

Pelatihan Bahasa Inggris: Desain Template Belajar Seru dengan Canva untuk Anak SD dan SMP di Komunitas Yatim Kampung Bojong Indah Pratama, Yoga; Fridolini, Fridolini; Faturachman, Danny; Hariyana, Agustinus; Dasmo, Dasmo
Jurnal PKM: Pengabdian Kepada Masyarakat Vol 7, No 6 (2024): Jurnal PkM: Pengabdian kepada Masyarakat
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/jurnalpkm.v7i6.25408

Tujuan kegiatan pengabdian kepada masyarakat (PKM) ini adalah memberikan pelatihan kepada mitra yaitu anak yatim komunitas kampung bojong Indah tentang bagaimana meningkatkan kompetensi dengan memberikan pelatihan belajar menulis dan mendesain dalam bahasa Inggris menggunakan teknologi artificial intelegence (AI) Canva. Canva mempermudah pembuatan materi yang menarik dengan mengurangi kompleksitas desain grafis, sehingga penggunaan Canva dalam pendidikan dapat meningkatkan keterlibatan siswa dengan menyajikan informasi secara visual yang lebih menarik dan mudah dipahami. Dengan pendekatan praktis ini diharapkan dapat memperkaya pengalaman belajar bahasa Inggris anak-anak di Kampung Bojong Indah dan mendukung perkembangan holistik anak-anak. Kegiatan ini dilaksanakan di Universitas Darma Persada dan diikuti oleh 20 siswa, terdiri dari 10 siswa SD dan 10 siswa SMP yang berdomisili di Kampung Bojong Indah dan tergabung dalam Gerakan Masyarakat Peduli Kampung Bojong (LSGMP). Kegiatan ini berlangsung di Laboratorium Bahasa Multimedia Universitas Darma Persada dengan menggunakan metode pembelajaran interaktif,berbasis project. Hasil dari pelatihan ini adalah peningkatan kompetensi bahasa Inggris siswa yang signifikan. Respons positif terhadap materi yang disajikan terlihat jelas melalui peningkatan partisipasi dan hasil latihan serta uji coba yang dilakukan selama pelatihan. Hal ini berdampak positif pada kualitas pembelajaran yang diterima oleh siswa, karena program Canva mampu meningkatkan kemampuan belajar menulis bahasa Inggris siswa dan belajar menjadi lebih efektif.

Utilization of Environmentally Friendly Energy in Organic Fertilizer Processing Machine Yendi Esye; Husen Asbanu; Danny Faturachman; Yefri Chan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1285-1294

Agriculture is the primary livelihood for most of Indonesia's population, which has vast agricultural land. However, there remains a dependency on chemical fertilizers, which degrade soil quality compared to organic farming that can optimize plant health and productivity. The energy needs in the agricultural sector, including mechanization and fertilizer production, are critical but still heavily reliant on fossil fuels. It is, therefore, essential to reduce this dependency by utilizing environmentally friendly alternative energy sources. This study examines the use of solar energy to power machines in the process of producing organic fertilizer. The tools used in the study include a 100 Wp solar panel, solar energy conversion components, a 12 Volt 33 Ah battery, a ¼ Hp electric motor, a voltage and current meter, a temperature gauge, a sunlight intensity meter, and an organic fertilizer processing machine. The research method analyzes several variables, including sunlight intensity, power, voltage, current, charging time, and battery usage. The study found that the solar panel used was insufficient to power the ¼ HP motor, requiring the addition of three more solar panels and batteries to meet the motor's power requirement of 233 watts. Battery charging tests required 3 hours, and battery usage for machine operation without solar panel installation lasted 1 hour and 40 minutes, while battery usage for machine operation with solar panel installation lasted 6-7 hours. Keywords: Environmentally friendly energy, Fertilizer crushing machine, Organic fertilizer, Solar energy.

Pengabdian Masyarakat Internasional Cross-cultural Event Antara Kanto Gakuin University dan Universitas Darma Persada Pratama, Yoga; Hidayat, Syarif; Suranto; Juliansyah; Fitriani, Nurul; Yuniar Ernawati, Eka; Fridolini; Afiyati, Alia; Hariyana, Agustinus; Faturachman, Danny
Educivilia: Jurnal Pengabdian pada Masyarakat Vol. 6 No. 2 (2025): Educivilia: Jurnal Pengabdian pada Masyarakat
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ejpm.v6i2.18531

Penelitian ini menjabarkan pengalaman mahasiswa yang berpartisipasi dalam program pertukaran budaya antara Universitas Darma Persada (UNSADA) dan Kanto Gakuin University (KGU) pada tahun 2025. Dengan menggunakan pendekatan partisipatif, penelitian ini mengeksplorasi manfaat, tantangan, dan hasil dari interaksi lintas budaya dalam konteks akademik. Data dikumpulkan melalui diskusi kelompok terfokus (FGD), observasi partisipatif, dan catatan reflektif dari 20 mahasiswa UNSADA dan 5 mahasiswa KGU. Temuan penelitian menunjukkan bahwa program ini secara signifikan meningkatkan keterampilan komunikasi lintas budaya, kesadaran global, dan wawasan akademik mahasiswa. Tantangan seperti kecemasan budaya (culture shock) dan hambatan bahasa diidentifikasi, namun berhasil diatasi melalui dukungan institusi dan kolaborasi antar mahasiswa. Program ini berhasil menciptakan lingkungan yang inklusif, mempromosikan saling pengertian dan toleransi di antara peserta. Penelitian ini menegaskan pentingnya program pertukaran budaya dalam pendidikan tinggi sebagai sarana untuk mempersiapkan mahasiswa menghadapi dunia yang semakin global dan menyarankan bahwa inisiatif semacam ini dapat menjadi model untuk kerja sama internasional di masa depan.

Review of Automatic Identification System: Application, Challenge and Limitations Arifin, Mohammad Danil; Muslim, Muswar; Octaviani, Fanny; Faturachman, Danny
International Journal of Marine Engineering Innovation and Research Vol 9, No 3 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i3.21561

The Automatic Identification System (AIS) has become a crucial technology in maritime operations, significantly enhancing navigational safety, maritime surveillance, environmental monitoring, and search and rescue (SAR) efforts. This paper aims to review the diverse applications, challenges, and limitations of AIS within these fields. By analyzing existing literature and case studies, the paper highlights the effectiveness of AIS in improving maritime safety and security while also identifying its shortcomings, such as signal manipulation, coverage gaps, and data overload. The methods include a comprehensive review of AIS applications across various maritime sectors such as navigational safety and collision avoidance, maritime surveillance and security, environmental protection, and search and rescue (SAR) operations by examining both the benefits and the technical challenges. The results indicate that while AIS has revolutionized maritime operations by providing real-time tracking and enhanced situational awareness, ongoing issues such as data reliability and system vulnerabilities require further attention. This review concludes that continued advancements in AIS technology and its integration with other systems are essential to overcoming these challenges and maximizing the potential of AIS in global maritime practices.

Utilization of Environmentally Friendly Energy in Organic Fertilizer Processing Machine Esye, Yendi; Asbanu, Husen; Faturachman, Danny; Chan, Yefri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1285-1294

Agriculture is the primary livelihood for most of Indonesia's population, which has vast agricultural land. However, there remains a dependency on chemical fertilizers, which degrade soil quality compared to organic farming that can optimize plant health and productivity. The energy needs in the agricultural sector, including mechanization and fertilizer production, are critical but still heavily reliant on fossil fuels. It is, therefore, essential to reduce this dependency by utilizing environmentally friendly alternative energy sources. This study examines the use of solar energy to power machines in the process of producing organic fertilizer. The tools used in the study include a 100 Wp solar panel, solar energy conversion components, a 12 Volt 33 Ah battery, a ¼ Hp electric motor, a voltage and current meter, a temperature gauge, a sunlight intensity meter, and an organic fertilizer processing machine. The research method analyzes several variables, including sunlight intensity, power, voltage, current, charging time, and battery usage. The study found that the solar panel used was insufficient to power the ¼ HP motor, requiring the addition of three more solar panels and batteries to meet the motor's power requirement of 233 watts. Battery charging tests required 3 hours, and battery usage for machine operation without solar panel installation lasted 1 hour and 40 minutes, while battery usage for machine operation with solar panel installation lasted 6-7 hours. Keywords: Environmentally friendly energy, Fertilizer crushing machine, Organic fertilizer, Solar energy.

Application of Solar Energy for Coconut Grating Machine in Rural Areas Asbanu, Husen; Esye, Yendi; Chan, Yefri; Faturachman, Danny
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1767-1777

Manual processing of coconut and the expensive gasoline force farmers to sell copra at low prices. This study explores the potential use of solar energy for operating coconut grating machines. The experiment utilized a 100 Wp solar panel to run a coconut grating machine driven using ¼ HP electric motor. The observation parameters included solar irradiance, power, voltage, current, battery charging duration, and energy efficiency. The results indicate that a 100 Wp solar panel is insufficient to meet the power requirements of the 186 W electric motor. Therefore, adding at least two solar panels and increasing the battery capacity must meet the machine's operational requirements. The battery charging time, until complete, is recorded at 16 h. Without the support of solar panels, the battery can operate the machine for 3 to 4 h. Meanwhile, when the battery is recharged while the machine operates with the solar panel system, the operating duration can reach 6 to 7 h. Therefore, solar energy demonstrates great potential as a renewable energy solution that can be utilized in the agricultural processing process in rural areas in a sustainable and environmentally friendly manner. Testing of the coconut grating machine powered by solar energy, supported by a 12V 100Ah battery and a 1/4 HP motor, showed that it can operate for approximately 3.8 h in a single work cycle. With a grating duration of 2.6 min per coconut, the system can grate up to approximately 87 coconuts per operational cycle.

The effect of quality control standard implementation for quality improvement of the casting process on the jewellery manufacturing industry Erwin; Chan, Yefri; Lenardo, Yovi; Supriatna, Ade; Faturachman, Danny
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1206

The high demand for jewellery products increases significantly every year, but the export requirements of the products demand high quality. So, efforts are needed to improve quality, support cost savings, reduce energy needs, and improve work safety, especially in the casting process of jewellery products. This study aims to analyze the implementation of practical quality control standards to improve the quality of jewellery product casting. This research method uses a Plan-Do-Check-Action process approach that refers to ISO 9001, 14001 and 45001 standards. Implementing the PDCA (Plan-Do-Check-Action) process approach adopted in developing quality control methods in the jewellery casting process proved effective, resulting in casting shrinkage of 0.2 kg below the established standard of 0.7 – 1 kg. Controlling temperature casting below the melting point can also provide energy savings and heat control of the casting process to reduce occupational safety and health hazards. PDCA quality control methods can improve the quality of casting jewellery products by reducing porosity defects and shrinkage, saving energy, and reducing occupational safety hazards. This research provides an effective quality control method for the jewellery casting production process regarding quality improvement, environmental management, and safety to achieve the Company's sustainability.

Enhancing Religious Tourism Through Sea Transportation: A Transnational Approach to Batam and Singapore Hartati, Celerina Dewi; Faturachman, Danny; Chandra, Yulie Neila; Wijayanti, Gustini
Khazanah Sosial Vol. 7 No. 3 (2025): Khazanah Sosial
Publisher : UIN Sunan Gunung Djati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ks.v7i3.44321

Batam City, which is part of the Riau Islands Province, serves as a connecting hub between Indonesia and Singapore. Batam is strategically located in a border area between countries, neighboring one of the world's business centers, Singapore. Therefore, maritime transportation plays a crucial role in a maritime nation like Indonesia. The high intensity of transportation between Batam and Singapore indicates that both cities are tourist destinations. Residents of both Batam and Singapore view these cities as tourist destinations. This study focuses on religious tourism. The high intensity of maritime transportation is particularly evident during weekends and holiday seasons, as many residents of both cities visit each other's locations, which shows the high intensity of social mobilization. This study aims to highlight maritime aspects and their relationship with society through the concept of transnationalism within the framework of tourism, particularly religious tourism. With globalization and the need to expand networks, maritime transportation is essential to support transnational processes. For this reason, maritime safety is vital, as it significantly influences efforts toward sustainable development, especially in maritime transportation activities that support tourism.

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