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All Journal International Journal of Electrical and Computer Engineering International Journal of Applied Power Engineering (IJAPE) TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Science and Technology Indonesia JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Journal of Applied Engineering and Technological Science (JAETS) Indonesian Journal of Electrical Engineering and Computer Science Prioritas : Jurnal Pengabdian Kepada Masyarakat Journal of Sustainability Perspectives Jurnal Akselerasi Merdeka Belajar dalam Pengabdian Orientasi Masyarakat (Jurnal AMPOEN) RESLAJ: Religion Education Social Laa Roiba Journal Jurnal Ilmiah Teknik Informatika & Elektro (JITEK) Jurnal Ilmiah Teknik Mesin & Industri (JITMI)
Dadan Ramdan
Univeristas Medan Area
Religion Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Analisis Kualitas Produk Botol 30ml Dengan Parameter Temperatur Pada Mesin Injection Molding Model Blow Elapri, Bima Yoel; Ramdan, Dadan; Umroh, Bobby
Jurnal Ilmiah Teknik Mesin & Industri (JITMI) Vol 2, No 2 (2023): Jurnal Ilmiah Teknik Mesin & Industri (JITMI), November
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jitmi.v2i2.3424

Abstract

Injection molding is one method that is widely used because of the lower cost required. The resulting plastic product is inseparable from the problem of product defects. This research uses quantitative methods and data collection or field on the subject of research, after that analyzing each parameter. The results of this study the occurrence of several defects in the product, namely short molding product defects have the most defects, namely 3, while over mold, sink mark and weldmark or flow product defects are 2 and the least is the hole product defect, namely 1. The setting at temperature determines the quality, especially in terms of appearance, at a temperature of 190 0C gives a much better product quality compared to temperatures of 180 and 200 0C. Analyze the optimal screw speed of 8 Rpm so that the resulting product can become a desired bottle product. Analysis of product defects that occur are Sink Mark, Weldmark or flow mark, Shrinkage and Over Mold which occurs at temperatures of 180 - 200 0C. The defects that most often arise because the mold has uneven lines so that defects occur in bottle products.
Rancang Bangun Cetakan Botol Ukuran 30 ml Model Blow Pada Mesin Injection Molding Siagian, Martua Sangap; Ramdan, Dadan; Umroh, Bobby
Jurnal Ilmiah Teknik Mesin & Industri (JITMI) Vol 2, No 1 (2023): Jurnal Ilmiah Teknik Mesin & Industri (JITMI), May
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jitmi.v2i1.2009

Abstract

At present, the need to use plastics and the advancement of manufacturing technology for the material itself drive people's demand for plastics, and the development of technology has further increased competition in all fields of industry. Therefore, the plastics industry needs to increase production in terms of quality and quantity. In this way, plastic can slowly replace iron and steel due to its good moldability and light weight. In this research, as a research method, we use quantitative methods by conducting surveys, data collection and field research related to the research theme. After the data is collected, the next step is the fabrication of the test equipment. From the mold fabrication results, the mold is in the shape of a 30 ml bottle with dimensions of 105 mm x 40 mm, inlet ø 6 mm, outlet 3 mm, and the mold is made of aluminum. This mold is called the 3 plate system and the mold consists of 3 main parts which are divided into 3 parts. Good and ideal molding results were obtained with HDPE (High Density Polyethylene) material with injection speed parameters of 8 rpm and temperature of 190°C.
Sosialisasi Pembuatan Pakan Fermentasi untuk Ternak Sapi di Dusun I Bukit Gantung Desa Sumber Mulyo Rahman, Sayuti; Khahfi Zuhanda, Muhammad; Ramdan, Dadan; Hartono, Hartono; Syah, Rahmad; Sembiring, Arnes; Astuti Kuswardani, Retna; Suswati, Suswati; Ady Pratama, Ramadhan; Martini, Dewi
Prioritas: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 02 (2025): EDISI SEPTEMBER 2025
Publisher : Universitas Harapan Medan

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

Abstract

Ketersediaan pakan berkualitas menjadi tantangan utama bagi peternak sapi di Dusun I Bukit Gantung, Desa Sumber Mulyo, terutama pada musim kemarau ketika hijauan terbatas dan harga pakan komersial meningkat. Ketergantungan pada rumput dan jerami tanpa pengolahan menyebabkan rendahnya nilai nutrisi serta pertumbuhan ternak yang tidak optimal. Kegiatan Pengabdian kepada Masyarakat (PkM) ini bertujuan memberikan edukasi dan pelatihan kepada peternak mengenai pembuatan pakan fermentasi sebagai solusi aplikatif, murah, dan berkelanjutan. Metode pelaksanaan mencakup sosialisasi konsep fermentasi, demonstrasi teknis, dan hands-on training mulai dari pemilihan bahan, pencacahan, pencampuran dengan EM4, pengaturan kadar air, hingga pengemasan anaerob dan proses inkubasi. Evaluasi dilakukan melalui pre-test dan post-test untuk mengukur peningkatan pengetahuan dan keterampilan peserta. Hasil kegiatan menunjukkan peningkatan signifikan antara 40% hingga 54% pada aspek pemahaman konsep dasar, teknik pengolahan, serta kemampuan menganalisis kesalahan fermentasi. Pelatihan ini terbukti efektif dalam membangun kapasitas peternak untuk memproduksi pakan fermentasi secara mandiri, memanfaatkan limbah pertanian, dan mengurangi ketergantungan pada pakan komersial. Penerapan teknologi fermentasi diharapkan mampu meningkatkan produktivitas ternak serta mendukung praktik peternakan yang lebih efisien dan berkelanjutan.
Frequency response-based optimization of PID controllers for enhanced fluid control system performance Frianto, Herri Trisna; Humaidi, Syahrul; Tarigan, Kerista; Ramdan, Dadan; Bonardo, Doli
International Journal of Applied Power Engineering (IJAPE) Vol 14, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v14.i4.pp1058-1070

Abstract

Temperature and viscosity variations are known to affect the performance of proportional-integral-derivative (PID) controllers in fluid systems. However, there exist gaps in research relative to the thermal effects on the performance of PID based fluid systems. PID controllers are also utilized for fluid control to maintain stability and improve performance. This study aims to explore the influence of temperature and viscosity variations through frequency response analysis for the first time in this regard. Utilizing a controlled experimental setup, gain and phase values were measured across different temperature points. Bode and Nyquist plots were generated to observe system behavior, stability, and response to changes in temperature and fluid viscosity. The results show a clear inverse relationship between temperature and gain, with a notable phase lag increase as temperature rises. At 25 °C, the gain was measured at 15.83 dB with a phase of -52.63°, which gradually reduced to a gain of 13 dB and a phase of -61.53° at 80 °C. The Nyquist analysis revealed stable operation within this temperature range, but the shift in response indicates increased system vulnerability as viscosity decreases with rising temperature. The derived linear equations effectively model the gain-phase relationship, with an R² of 0.9985, suggesting a highly accurate fit. Overall, the study concludes that temperature-induced viscosity changes significantly impact PID-controlled fluid systems, emphasizing the need for adaptive control strategies in fluctuating environments.
Pembuatan dan Uji Impact Plat dari Serat Karbon Kevlar Lewi Gonzales Marpaung; Dadan Ramdan
Reslaj: Religion Education Social Laa Roiba Journal Vol. 7 No. 12 (2025): RESLAJ: Religion Education Social Laa Roiba Journal
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/reslaj.v7i12.10060

Abstract

Carbon fiber has been widely used in various fields thanks to its superior properties in terms of stiffness, lightness, strength and corrosion resistance. This study uses an experimental method using a mold and a vacuum machine and tested using a charpy impact. This test aims to determine the strength properties of a plate made of carbon fiber type Kevlar blue reflective metallic plain 200 gm formed into a plate. The results of the plate test using 3 layers of carbon fiber have an impact strength of 327 (Joules), a 7-layer plate has an impact strength of 654 (Joules), and an 11-layer plate has an impact strength of 752 (Joules). The process of making the plate by infusion, so that it can affect the density of each layer, and can be formed into a plate. The impact test was carried out to determine the impact strength value of the designed plate. From the results of the impact test, the 11-layer plate can be applied to the car body
Co-Authors Abdul Karim Ady Pratama, Ramadhan Alia, Salsabila Rahma Aliakbar, Muhammad Almoataz Youssef Abdelaziz Andi Rubiantara ASNAWI Auliana, Sigit Bobby Umroh Bonardo, Doli Chu Yee Khor Dina Maizana Elapri, Bima Yoel Erna Frida Erwin Perdamaian Telaumbanua Habib Satria Habib Satria Harahap, Usman Hartono Hartono Herri Trisna Frianto, Herri Trisna Ida Fauziah, Ida Ifvochy, Jammes Indri Dayana Ivandar Tambunan Jaka Windarta Juliaster Marbun Khahfi Zuhanda, Muhammad Khor Chu Yee Lewi Gonzales Marpaung Marlan Swandana, Marlan Martha Rianna Martini, Dewi Maulana Ns, Farhan Mohd Zulkifly Abdullah Moranain Mungkin Muhammad Ali Akbar, Muhammad Ali Muhammad Fadlan Siregar Muhammad Ghaffaar Ramadhan Muhammad Khahfi Zuhanda Ningsih, Ratu Septia Petrus, Simon Rahmad B.Y Syah Rahmad Syah, Rahmad Rahman, Sayuti Retna Astuti Kuswardani Rimbawati Sembiring, Arnes Siagian, Martua Sangap Siti Utari Rahayu suhada, mukhlis suswati suswati Syafii . Syahrul Humaidi, Syahrul Syarifah Muthia Putri Tambunan, Ivandar Tarigan, Kerista Usman Harahap Yulianta Siregar Zulfitra Zulfitra