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All Journal Rotasi Rekayasa Mesin JURNAL ELEKTRO Jurnal Rekayasa Mesin Panrita Abdi - Jurnal Pengabdian pada Masyarakat Journal of Science and Applicative Technology CARADDE: Jurnal Pengabdian Kepada Masyarakat J-Dinamika: Jurnal Pengabdian Kepada Masyarakat G-Tech : Jurnal Teknologi Terapan Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Abdimas Bina Bangsa Jurnal Pengabdian Masyarakat Charitas Cylinder : Jurnal Ilmiah Teknik Mesin
Marten Darmawan
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Analisis Kemampuan Hisap Gas Removal System (GRS) Pada Pembangkit Listrik Tenaga Panas Bumi Ariel Andrew; Marten Darmawan
Cylinder : Jurnal Ilmiah Teknik Mesin Vol. 4 No. 1 (2018): OKTOBER 2018
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

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

Abstract

Energi panas bumi merupakan sumber energi yang dapat dikonversikan menjadi energi listrik dalam unit pembangkit listrik tenaga panas bumi (PLTPB). Fluida kerja yang mengalir dari sumur produksi tidak hanya mengadung air, tetapi juga mengandung gas-gas lain yang tidak dapat terkondensasi pada suhu ruangan atau disebut juga non-condensable gas (NCG). NCG ikut dialirkan dari sumur hingga memasuki turbin kondensor. Karena sifatnya yang tidak dapat terkondensasi, maka diperlukan sebuah sistem yang mampu menghisap keluar seluruh NCG agar tidak menumpuk di dalam kondensor. Oleh karena itu, diperlukan suatu Gas Removal System (GRS) yang berfungsi untuk menghisap keluar seluruh gas-gas yang tidak dapat terkondensasi pada kondensor. Pada suatu unit pembangkit PLTPB, beban hisap yang harus bisa ditanggung oleh GRS ketika pengoperasian normal adalah sebesar 2,2 kgNCG/s. Hasilperhitungan yang diperoleh dari penelitian ini menunjukkan bahwa GRS Steam Jet Ejector (SJE) yang digunakan sebagai pompa preventif memiliki potensi untuk digunakan sebagai pompa GRS dalam pengoperasian normal. Hal ini ditunjukan melalui perhitungan GRS tersebut dalam kondisi Dry Air Equivalent (DAE) maksimum. GRS SJE memiliki kemampuan hisap maksimal pada tahap pertama sebesar 2,97 kgNCG/s dan pada tahap kedua sebesar 2,71 kgNCG/s.
Rancang Bangun Kursi Roda Bermotor Elektrik Dengan Sistem Pengendalian Gestur Untuk Penyandang Tetraplegic Marten Darmawan; Joseph Fernando Budi Prasetyo; Arka Dwinanda Soewono
Journal of Science and Applicative Technology Vol 7 No 2 (2023): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v7i2.1447

Abstract

Improving medical services is continuously prioritized for the sake of achieving the welfare of all people in the world, and by providing good services in the medical field, people's needs will be increasingly fulfilled. Limitations of movement in someone with a disability, such as persons with disabilities tetraplegic in terms of mobility, are often obstacles. Therefore, a media-assisting movement is needed. This study designed an electric wheelchair that can help users with disabilities tetraplegic in moving without the need for too much force as in a standard wheelchair. This electric wheelchair uses automation by utilizing Accelerometer, which can detect vectors or so-called gyroscopes and connect with Arduino as the processor is continued to the DC motor as the driving force. Based on the test data, it was found that the design of this wheelchair moves as desired. This can be seen from the change in speed of the driving motor to changes in the tilt of the accelerometer mounted on the head. In the forward motion test, the maximum motor speed is 35 RPM when the accelerometer angle is at a slope of 64.7o positive axes. Meanwhile, the backward movement of the wheelchair occurs when the accelerometer is at a slope of -21.1o and produces a speed of 11.2 RPM on wheels. The rider's maximum load is designed to be 50 Kg.
Perbandingan Algoritma Machine Learning menggunakan Orange Data Mining untuk Klasifikasi Jenis Kendaraan pada Sistem Tilang Digital Pranadjaya, Egipta; Pangestu, Evan Sudira; Octaviani, Sandra; Darmawan, Marten; Sereati, Catherine Olivia
Jurnal Elektro Vol 17 No 1 (2024): Jurnal Elektro: April 2024
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v17i1.5429

Abstract

This paper discusses the application of the Orange Data Mining application to compare several machine learning algorithms for classifying vehicle types in digital ticket systems. This research compares and analyzes the logistic regression algorithm, Support Vector Machine (SVM) and Neural Network (NN) to solve vehicle classification problems in digital traffic tickets. The research results show that in the training process and based on the dataset used, the algorithms that have the highest level of accuracy are Logistic Regression, Neural Network and Support Vector Machine. Meanwhile, during the testing process, all algorithms in the model were able to carry out classification with 100% accuracy
Sosialisasi dan Pemasangan Sistem Penerangan Berbasis Tenaga Surya Di Panti Asuhan Mekar Sari Darmawan, Marten; Soewono, Arka Dwinanda; Hutagalung, Rory Anthony; Christiand, Christiand; Fanlau, Dylan Ryo
Jurnal Pengabdian Masyarakat Charitas Vol. 2 No. 01 (2022): Jurnal Pengabdian Masyarakat Charitas Juni 2022
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v2i01.3600

Abstract

Solar energy is one of the sustainable and environmentally friendly energy sources. However, this renewable energy is still not widely utilized by the people of Indonesia even though Indonesia, as a tropical country, has vast solar energy potential. Hence, It is essential to introduce and socialize solar energy potential to the general public. The partner of this community outreach program is Mekar Lestari Orphanage in South Tangerang. The orphanage care for children aged 3-16 years from various backgrounds. As a younger generation, it is hopeful that they can develop a mindset of solar energy as one of the renewable energy sources that can replace fossil fuels. In addition, the Mekar Lestari Orphanage in its social role requires a facility with adequate lighting. However, there was a lack of lighting in the front yard of the orphanage, making access to the facility difficult, especially at night. Therefore, a solar energy-based lighting system has been built and installed on the front gate of the orphanage. After installing the lighting system, socialization about the basic theory of solar energy and how the solar-powered lighting system works was conducted. The evaluation of the event, attended by representatives of staff and children living in the orphanage, showed that all participants gained new knowledge and a deeper understanding of solar energy. In addition, they learned new skills to operate and maintain solar lighting systems. From the positive feedback during the socialization, it is hopeful that this activity can provide education on the actual application of solar energy and help to improve lighting conditions in the orphanage.
Rancang Bangun Sistem Pembersih Akuarium Untuk Penjual Ikan Hias Jakarta Aquatics Darmawan, Marten; Soewono, Arka Dwinanda; Hutagalung, Rory Anthony; Christiand, Christiand; Hermansyah, Fabian David
Jurnal Pengabdian Masyarakat Charitas Vol. 2 No. 02 (2022): Jurnal Pengabdian Masyarakat Charitas Desember 2022
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v2i02.3706

Abstract

Aquarium cleaning is routine maintenance that must be done to maintain dissolved oxygen levels in the water to ensure the survival of aquatic biota. Maintaining cleanliness and water quality is key to preventing the water in the aquarium from becoming cloudy and emitting a foul odor due to increased ammonia levels in the water. However, aquarium cleaning is quite time-consuming and laborious, which becomes a problem for Jakarta Aquatics, which is engaged in selling and purchasing ornamental fish. As a solution, a prototype cleaning equipment that can simplify the process of maintaining the cleanliness of the water in the aquarium was designed and built. In general, the cleaning equipment designed consists of an acrylic screen that acts as a pseudo-base that collects fish waste at the bottom of the aquarium tank. Pumps are then used to remove water and waste from the aquarium easily, so there is no need to remove aquarium inhabitants during the cleaning process, thereby minimizing the possibility of fish death due to stress. The method used during the outreach program includes conducting a survey, performing a design process, and demonstrating on how to use and maintain the cleaning equipment. To assess the success of this program, Jakarta Aquatics owners and employees were asked to fill out a questionnaire. The questionnaire results showed that partners were more than satisfied with the equipment performance and the demonstration event. It is hoped that using this cleaning equipment in their aquariums can help improve the productivity of Jakarta Aquatics employees.
Rancang Bangun Wastafel Multifungsi Untuk Tempat Perlindungan Hewan Fie Fie Jo Soewono, Arka Dwinanda; Darmawan, Marten; Hutagalung, Rory Anthony; Gunawan, Harjadi; Fernandi; Yuwana, Vincent
Jurnal Pengabdian Masyarakat Charitas Vol. 3 No. 01 (2023): Jurnal Pengabdian Masyarakat Charitas Juni 2023
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v3i01.4604

Abstract

Fie Fie Joe animal shelter employees and visitors often physically contact animals while feeding, playing with, or cleaning animals and their cages. In order to prevent virus and bacteria transmission, animal shelters require everyone to wash their hands after visiting the outdoor area. The Fie Fie Jo shelter, however, faced two main problems. First, only one hand-washing station is available in their facility, allowing possible viruses or bacteria to be transmitted through physical contact with other people or objects before entering the indoor facility. Second, their staff took a long time to bathe the animals in their enclosures since there was no washing station in the outdoor area. Therefore, this outreach program aims to design and build a multi-purpose washing station for the outdoor area that can be operated by a foot pedal so that users do not need to touch the faucet physically. The washing station has additional features such as a large tub that can also be used for bathing animals, a tissue holder, and a garbage disposal to help make it easier and faster to bathe several animals simultaneously. The method used during the outreach program includes conducting a survey, performing a design process, and demonstrating how to use and maintain the multi-purpose washing station. To assess the success of this program, the Fie Fie Jo owner and employees were asked to fill out a questionnaire. The results showed that they were more than satisfied with the demonstration and performance of the washing station. The presence of the multi-purpose washing station can improve productivity and reduce the risk of viruses and bacterial contamination of the Fie Fie Joe animal shelter employees and visitors.
Rancang Bangun Fasilitas Cuci Tangan Pintar Untuk Lembaga Bimbingan Belajar Hikari Darmawan, Marten; Soewono, Arka Dwinanda; Hutagalung, Rory Anthony; Bachri, Karel Octavianus; Anthony , Jean; Setiawan, Axel Gilbert
Jurnal Pengabdian Masyarakat Charitas Vol. 3 No. 02 (2023): Jurnal Pengabdian Masyarakat Charitas Desember 2023
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v3i02.4965

Abstract

Indonesia is one of the countries affected by the COVID-19 pandemic. One of the most effective ways to prevent the spread of the COVID-19 virus is by regularly washing hands with soap for 20 seconds. With the pandemic conditions improving and the government lifting COVID restrictions, learning institutions can continue learning activities with the requirement that they obey strict health protocols. One of the private tutoring institutions in Tangerang that has resumed operations is Hikari Private Tutoring. With many people using the same facilities for educational activities, Hikari Private Tutoring is required to provide facilities for washing hands. Based on the inputs from Hikari Private Tutoring management, a touchless hand-washing facility was designed to minimize COVID-19 transmission. The hand washing facility also has an LCD to play videos of correct hand washing procedures and show how long the user has washed their hands. At the end of this activity, the manager and staff of Hikari Private Tutoring were asked to fill out a questionnaire. The results showed that they were satisfied with the functionality of the touchless hand-washing facilities. This hand-washing facility can hopefully help educate the public, particularly the staff and students of Private Tutoring, on the correct technique to wash their hands and prevent the spread of COVID-19.
ANALISIS LAJU ALIRAN PADA NOZZLE PRINTER TIGA DIMENSI UNTUK MATERIAL THERMOPLASTIC POLYURETHANE Dylan, Mateus; Soewono, Arka; Darmawan, Marten
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 8 No 1 (2022): APRIL 2022
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v8i1.3907

Abstract

Penggunaan Printer 3D saat ini sudah semakin luas dan banyak macam bentuk yang dapat dibuat karena sistem layer-by-layer. Pada penelitian ini dilakukan pengukuran laju aliran volumetrik (debit) menggunakan material Thermoplastic Polyurethane (TPU) sebagai filamen printer 3D. TPU memiliki karakteristik material yang elastis. Pada eksperimen, dapat dibuktikan bahwa fluida TPU memiliki sifat non-newtonian, yaitu shear-thinning karena semakin besar temperatur dan kecepatan input yang diberikan pada fluida menyebabkan peningkatan debit outlet. Pengukuran laju aliran volumetrik (debit) fluida ditujukan agar dapat diketahui pengaruh viskositas fluida terhadap kestabilan debit aliran. Data hasil eksperimen dibandingkan dengan data hasil simulasi menggunakan perangkat lunak ANSYS Fluent 17.2. Data hasil simulasi belum dapat menunjukkan pengaruh viskositas terhadap debit aliran diakibatkan data yang dimasukkan pada perangkat lunak hanya berdasarkan dari jurnal dan lembaran data spesifikasi produk pabrik tertentu.
Rancang Bangun Alat Tamping Kopi Berbasis Sistem Pneumatik menggunakan Solenoid Valve Darmawan, Marten; Raharjo, Ignatius Felix; Andreas, Lucky; Viriya, Nanda; Asmoro, Naomi Laras; Pradipa, Rafael Evan; Soewono, Arka
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 8 No 2 (2022): OKTOBER 2022
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v8i2.4866

Abstract

Konsumsi minuman kopi oleh masyarakat Indonesia semakin meningkat dari tahun ke tahun. Meningkatnya konsumsi menuntut penyajian kopi yang cepat dan juga konsisten dalam segi rasa. Beberapa jenis minuman kopi yang populer berbahan dasar espresso, proses pembuatan espresso dilakukan dengan memadatkan bubuk kopi (tamping) pada portafilter. Hal tersebut biasanya dilakukan secara manual menggunakan tangan. Alat Tamping Kopi Pneumatik ini bertujuan untuk mempersingkat waktu tamping dan hasil yang lebih konsisten. Berdasarkan hasil pengujian, waktu ekstraksi espresso dengan proses tamping menggunakan alat berada pada rentang waktu ideal yaitu 25 - 35 detik.
PENGEMBANGAN ALAT PERAGA PANEL SURYA SEBAGAI MEDIA PEMBELAJARAN DI SMA TARAKANITA GADING SERPONG Darmawan, Marten; Gunawan, Harjadi; Pranawa, Kertarta; Mustika, Donny; Soewono, Arka
Jurnal Abdimas Bina Bangsa Vol. 5 No. 2 (2024): Jurnal Abdimas Bina Bangsa
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jabb.v5i2.1246

Abstract

Tarakanita Gading Serpong Senior High School aims to be an educational institution as well as a research center that adheres to the concept of education for sustainable development. Therefore, the staff of Tarakanita Gading Serpong High School wanted a teaching module that could serve as a learning tool for students, as well as a research instrument for the staff to study the use of renewable energy sources in the form of solar power. To meet their needs, a prototype of a small solar module that can simulate how a solar panel works and measure its output voltage, current, and electrical power was designed and built. The module is equipped with a 50 Wp polycrystalline solar panel, a solar charge controller to regulate the distribution of electric current, an 18 Ah battery to store energy, and an electrical load in the form of an 18-Watt light bulb.  The solar module is designed to be easily moved and operated indoors or outdoors. When the module is indoors, a 75 W Halogen UV lamp is used as a proxy for sunlight. Hopefully, this solar module can serve as an effective learning medium to introduce the use of solar power as a renewable energy source for Tarakanita Gading Serpong High School students.
Co-Authors Achmad Junaedi Aditya, Damian Matthew Aldily, Kevin Alferio, Gavin Andreas, Lucky Anthony , Jean Ariel Andrew Ariel Andrew Arka Dwinanda Soewono Asmoro, Naomi Laras Beavis, Louis Eric Cahyadi, Felix Arnold Casey Ediana Goestiandi Casey Ediana Goestiandi Catherine Olivia Sereati Charisma Bathara Dewa Christiand Dewa, Charisma Bathara Djoko Setyanto Dylan, Mateus Fanlau, Dylan Ryo Felix Arnold Cahyadi Fernandi Filian Arbiyani Frederikus Wenehenubun Grady, Michael Gunawan, Ezra Raditya Hadi Sutanto Halim, Bennettdei Shajila Shane Harjadi Gunawan Hermansyah, Fabian David Irwan, Zephaniah Jehoshaphat, Andrew Chrisanto Jehoshaphat, Filbert Josep Halim Joseph Fernando Budi Prasetyo Joseph, Eugene Junaedi, Stefanus Julius Karel Octavianus Bachri Kornelia Agnes Juliati Krisnandi, Johanes Vianny Liutomo, Jeremy Luky Andreas Luky Andreas Mario Mateus Dylan Mustika, Donny Nahak, Demetrio Nanda Viriya Pachalis, Sebastian Michael Pangestu, Evan Sudira Pote, Juan William Pradipa, Rafael Evan Pranadjaya, Egipta Pranawa, Kertarta Prita Dewi Basoeki Raharjo, Ignatius Felix Ricky, Benediktus Rory Anthony Hutagalung Samsi, Irvan Sandra Octaviani B. Widiarto Satryanatha, Josaphat Febrian Septhio Trifosa Persisco Setiawan, Axel Gilbert Shandyanto, Valencia Angelica Soewono, Arka Soewono, Arka D. Steven Tobing, Sheila Turnip, Juan Karell Fitzgerald Viriya, Nanda Widharto, Widharto Wijaya, Nickolas Dario Yosef Teddy Budianto Yuwana, Vincent