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All Journal Jurnal Teknologi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN DINAMIKA Jurnal Ilmiah Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering JTERA (Jurnal Teknologi Rekayasa) JMM (Jurnal Masyarakat Mandiri) Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin JURNAL CRANKSHAFT Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Journal of Applied Sciences and Advanced Technology Mechanical Engineering for Society and Industry SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)
Zariatin, D.L
Universitas Pancasila
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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Analisis Water Turbine Vortex Terhadap Daya dan putaran Optimum Yang Dihasilkan Pada Pembangkit Listrik Tenaga Piko Hidro muryanto, muhammad; Zariatin, Dede Lia
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2022)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v8i2.5406

Abstract

Turbin pusaran air (vortex) adalah salah satu jenis turbin yang memanfaatkan pusaran air di sekeliling sumbu vertikal sebagai media perantara energi sehingga terjadi perbedaan tekanan yang menyebabkan turbin berputar. Turbin vortex ini dapat dimanfaatkan sebagai pembangkit listrik tenaga piko hidro, tujuan penelitian yaitu untuk mengetahui putaran dan daya yang  paling optimum yang dihasilkan dari water turbin vortex dengan ketinggian sudu  20cm kemiringan 25°, ketinggian sudu 40cm kemiringan 25° dan bentuk kurvatur. Hasil analisis penelitian Perubahan water vortex Turbine dengan ketinggian sudu  20cm kemiringan 25° pada bukaan katup 900 debit 3,2 l/det menghasilkan kecepatan putar sudu 114,4 rpm dan daya yang dihasilkan sebesar 3,72 Watt dan pada variasi ketinggian sudu 40cm kemiringan 25° pada bukaan katup 900 debit 3,2 l/det menghasilkan kecepatan putar sudu 112 rpm dan daya yang dihasilkan sebesar 3,248 Watt, untuk bentuk kurvatur pada bukaan katup 900 debit 3,2 l/det menghasilkan kecepatan putar sudu 117,7 rpm dan daya yang dihasilkan sebesar 4,34 Watt. Hasil yang diperoleh daribentuk sudu wter turbin vortax yang menghasilkan putaran dan daya listrik paling optimal terdapat pada bentuk kurvatur, menghasilkan daya listrik terbesar pada bukaan katup 900 debit 3,2 l/det dengan kecepatan putar turbin mencapai 117,7 rpm dan daya yang dihasilkan sebesar 4,34 WattKata Kunci: water turbin vortex, daya listrik, putaran turbin
Modifikasi Pitot Tube Static Dengan Dilengkapi Sensor Suhu Kelembaban, Anemometer Dan Alat Kemiringan Sudut Digital Pada Low Speed Tunnel Wt-400 Widyarto, Adefersa; Zariatin, Dede Lia
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 1 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.v15i1.8551

Abstract

Perkembangan revolusi di dunia industri tidak lepas dari perkembangan ilmu pengetahuan dan teknologi, Pengembangan ilmu pengetahuan dan teknologi yang berawal dari pengembangan laboratorium inilah menjadi dasar pemikiran dalam penelitian ini salah satunya adalah terowongan angin (wind tunnel) Suryadarma Low Speed Tunnel (SLST WT-400) yang ada di Universitas Dirgantara Marsekal Suryadarma. Wind tunnel yang digunakan oleh siswa belum dilengkapi alat ukur suhu dan kelembaban yang kemudian dalam perancangannya dikembangkan dengan menggunakan perangkat sistem baru untuk pembacaan otomatis sesuai dengan revolusi industri 4.0 dengan dilengkapi alat anemometer, dimana dilengkapi juga alat Pitot Tube Statis yang ada di dalam bagian Test Section Wind Tunnel yang berbasis digital untuk mengetahui Angle of Attack pada benda uji, sehingga mensimulasikan eksperimen yang lebih cepat dan akurat dari masalah karakteristik aerodinamis suatu benda uji.
Exploratory Factor Analysis for Developing Wheelchairs for Children with Cerebral Palsy Dwi Rahmalina; Desinta Rahayu Ningtyas; Nur Yulianti Hidayah; Agri Suwandi; Dede Lia Zariatin; I Gede Eka Lesmana; Dhidik Mahandika; Susanto Sudiro
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 7 Number 1 (2025)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v7i1.7769

Abstract

A wheelchair is an essential mobility tool for individuals with limitations, including children with Cerebral Palsy (CP). Cerebral palsy affects children under five and causes stiffness in various body parts. The design of wheelchairs for children with CP differs significantly from standard wheelchairs, prompting this research to identify the key factors that should be considered in designing such wheelchairs. This study used exploratory factor analysis, data was gathered from children with CP and their caregivers in Java. The findings revealed six fundamental factors to consider when designing wheelchairs for children with CP: Main features, Ultimate comfort, standard compliance, robust durability, thoughtful ergonomics, unique special features, user-friendly design, and aesthetic appeal. In summary, while the main features are crucial in the design of wheelchairs for children with CP, it is equally important that these wheelchairs comply with applicable standards and incorporate special features tailored specifically for these young users.
Potential of Bamboo as Car Roof Material D. L. Zariatin; Josep Krisdiandi Sibarani; Dahmir Dahlan; Ralf Förster; Ziani Adriant
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3644

Abstract

An effort to achieve SDGs 12# responsible for consumption and production is by optimizing the application of natural recycled materials, such as bamboo, in the automotive industry. Bamboo is a potential insulating material because it has low thermal conductivity. This study used Gigantochloa Atroviolacea as a thermal insulator projected as a car roof. Experiments were performed to identify the effective thermal conductivity. There were two shapes tested: slab and box. The first specimen is a laminated bamboo slab, and the second is a combined slab of laminated bamboo, glass wool, and aluminum foil. Based on the heat transfer calculation, the effective thermal conductivity is 0.21 W/mK and 0.14 W/mK for the laminated bamboo slab and combined slab, respectively. The thermal flow characteristic was analyzed in two box models with different material arrangements. The first box is laminated bamboo and fiber, and the second is laminated bamboo and glass wool. The results show that the first box can insulate heat better than the second. It was concluded that laminated bamboo and bamboo fiber can be used as a substitute for glass wool material. The bending test of laminated bamboo with three different layers was performed according to ASTM D 790. The maximum load was 616 kg for five layers. The bending test showed that laminated bamboo is insufficient as a car roof. Steel plates are still necessary to comply with the requirements of the FMVSS 216 standard.
Evaluasi Ergonomi pada Kursi Roda untuk Anak Cerebral Palsy Menggunakan Digital Human Modeling: Ergonomics Evaluation of Wheelchair for Children with Cerebral Palsy using Digital Human Modeling Dwi Rahmalina; Desinta Rahayu Ningtyas; Nur Yulianti Hidayah; Agri Suwandi; Dede Lia Zariatin; I Gede Eka Lesmana Lesmana; Dhidik Mahandika; Susanto Sudiro
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.4369

Abstract

Cerebral palsy is caused by brain damage that manifests as motor dysfunction. The most prevalent form of cerebral palsy is spastic diplegia, which causes walking difficulties. People with cerebral palsy, particularly children, require mobility aids, such as wheelchairs, to perform daily tasks. When designing wheelchairs for children with cerebral palsy, ergonomic evaluation is required to ensure that the resulting wheelchair is safe and will not pose a risk in the future. This paper investigates the use of digital human modeling to evaluate the ergonomics of wheelchairs for children with cerebral palsy. The method is used to collect samples from 5 to 18-year-old children with cerebral palsy. Digital human modeling is used to simulate and evaluate ergonomics using anthropometric data. The results obtained for the wheelchair dimensions are suitable for the 95th percentile value, while the seat length exceeds the popliteal length for the 50th percentile value. The ergonomic evaluation yielded satisfactory results for the lower back analysis parameter, and the comfort evaluation yielded satisfactory results for the 95th percentile value. In contrast, the 5th percentile value indicates knee discomfort in both the right and left knee.
Development of Data Acquisition System on an Arduino-Based Tensile Test Machine for Composite Materials: Pengembangan Sistem Akuisisi Data pada Mesin Uji Tarik berbasis Arduino untuk Material Komposit Dede Lia Zariatin; Yani Kurniawan; N.A Reza Afika
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 5 Nomor 2 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i2.4981

Abstract

A tensile testing machine with a lower load capacity is needed to identify the mechanical properties of composite materials. Tensile testing machines for composite materials are available in the market but at high prices. Previously, using a pneumatic system, a tensile testing machine for composite materials with a maximum load of 2000N was developed. However, this tensile test machine still needs improvement because the display of eventuating forces is only in numbers, not yet including a test graph. Therefore, this study developed a prototype data acquisition system for a tensile test machine to record the test results in more detail, both numbers and graphs. This data acquisition system uses the Arduino Uno Microcontroller, which processes data from the load cell through the HX711 module intermediary. A tensile test was carried out using a bamboo fiber composite material to validate the results of testing the prototype of this data acquisition system. Furthermore, the test results data are compared with the results on the indicators of the existing tensile test machine. The test was carried out nine times with an average tensile force of 1.66 N/mm2, while the average tensile force on the tool indicator was 2.02 N/mm2. There is a difference in the average test results equal to 12%. This difference is a systematic error because nine experiments have shown the same trend, with standard error and standard deviation of 0.3368 and 0.1123, respectively. The systematic error is compensated through calibration between the load cell of the tensile test machine and a series of data acquisition systems based on Arduino Uno.
Co-Authors Adik Hermanto Aditya Nugroho Adriant, Ziani Agri Suwandi Anggrainy, Rani Asep Suherlan Azid Rizqi Al Afghani Chairul Saleh Nasution Dahmir Dahlan Danies Seda Desinta Rahayu Ningtyas Dewanto, Yohanes Dhidik Mahandika Dwi Rahmalina, Dwi Fahmi Qudratullah Faisal Azhari Farid Setyo Raharjo Förster, Ralf Hakim, Moh Azizi I Gede Eka Lesmana I. G.E. Lesmana Indra Setiawan Ismail Ismail Ismail, Ismail Jaya, Misra Jemi Jamhur Josep Krisdiandi Sibarani Mahandika, Dhidik Misra Jaya Muryanto, Muhammad N.A Reza Afika Nur Yulianti Hidayah, Nur Yulianti R. C. Hartantrie Ralf Förster Ralf Förster Ramón A. Gilart Reinaldi Setyawan Rosidi Rosidi Rovida Camalia Hartantrie Saputra, Ryandi Daffa Sudiro, Susanto Sukmara, Sony Sulaksono, Bambang Susanto Sudiro Susilawati, Susilawati Taruna Taruna Thaer Syam Topo Susilo Wegie Ruslan Widyarto, Adefersa Yani Kurniawan Yulianto Yulianto Yulianto Yulianto Ziani Adriant Ziani Adriant