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All Journal Journal of Science and Engineering Patria Artha Technological Journal Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Inovasi Teknologi Terapan
Bambang Tjiroso, Bambang
Jurusan Teknik Mesin dan Industri, Fakultas Teknik Universitas Gadjah Mada Jl. Grafika No.2, Yogyakarta 55281
Religion Agriculture, Biological Sciences & Forestry Arts Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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Pembuatan Kompor Ramah Lingkungan Dengan Subtitusi Batuan Sebagai Media Penyimpan dan Penyalur Panas Amrun, Al Amar C.z; Tjiroso, Bambang; Usman, Ishak; Bahri LM, Syamsul; Umron, Amat
Patria Artha Technological Journal Vol 7, No 2 (2023): Patria Artha Technological Journal
Publisher : Department of Electrical Engineering, University of Patria Artha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33857/patj.v7i2.725

Abstract

Krisis energi bahan bakar minyak didunia yang berdampak pada naiknya harga jual bahan bakar minyak termasuk minyak tanah di Indonesia. Sebagai alternatif pembakaran batuan vulkanik yang mengsubtitusikan batuan sebagai media penyimpan panas diharapkan mempengaruhi pada proses memasak. Dalam proses penelitian ini peneliti mendesain, merancang, dan menguji kompor batuan vulkanik, Parameter yang dilakukan dengan metode pengamatan/pengukuran langsung. Kompor yang dibuat berbentuk persegi empat dengan dimensi lebar 34 cm, panjang 34 cm dan tinggi 26 cm. Jenis batuan yang digunakan sebagai media pembakaran adalah jenis batuan vulkanik andesit. Hasil laju perpindahan panas rata-rata pada kompor, dengan nilai terbesar laju perpindahan panas rata-rata yakni 1826,99 W dihasilkan pada tegangan listrik 225 V, sedangkan nilai paling rendah dengan nilai laju perpindahan panas rata-rata yakni 182,57 dihasilkan pada tegangan listrik 190 V. Waktu yang dibutuhkan api untuk mencapai temperatur konstan 1000℃ Waktu tercepat untuk mencapai temperatur konstan 1000℃ yakni 5,11menit dihasilkan pada tegangan listrik 225 V, sedangkan waktu paling lama untuk mencapai temperatur konstan 1000℃, yakni 6,35 menit dihasilkan pada tegangan listrik 190 V. dalam mendidihkan air lama waktu untuk mencapai temperatur 100°C (menit) dengan tegangan listrik 225V sudah dapat mendidihkan air sebanyak 2 liter. sedangkan waktu paling lama untuk mencapai temperatur 100°C yakni 55,04 menit baru dapat mendidihkan air sebanyak 2 liter pada tegangan 190 V.
Pengaruh Suhu Penuangan Terhadap Kualitas Dan Cacat Coran Aluminium Bekas Kaleng Minuman Dengan Metode Lost Foam Casting Tjiroso, Bambang; Umar, Kifli; Rais, Sandi; Rajak, Sahdar; Zulfikram, Zulfikram
Journal of Science and Engineering Vol 7, No 2 (2024): Journal of Science and Engineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/josae.v7i2.9322

Abstract

The purpose of this study is to determine the effect of pouring temperature on defect quality in aluminum castings for beverage cans, using the Lost Foam Casting method. The results indicate that pouring temperature significantly influences casting quality. Higher pouring temperatures improve casting quality by increasing fluidity, allowing the molten metal to better fill the mold cavities. Conversely, lower pouring temperatures reduce the aluminum's flowability. Observed defects primarily include cavities or small holes ranging in size from approximately 0.28000 µm to 0.6843 µm, suggesting porosity defects. Larger cavities (0.6843 µm) likely result from gas entrapment or shrinkage during cooling, while smaller cavities may be due to gas trapped on the surface of the castings.
Perlakuan Serat Sabut Kelapa Dengan Asap Cair Sebagai Bahan Penguat Komposit Penyerap Suara Mukhlis, Mukhlis; Seng, Ahmad; Tjiroso, Bambang; Muzni Harbelubun, Mohammad; Umar, Kifli
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 1 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i1.238

Abstract

This study aims to identify the potential use of coconut fiber (SSK) as an acoustic material composite that supports the development of environmentally friendly local material-based room partition infrastructure, so the study focuses on analyzing the acoustic properties of SSK composites. This study uses experiments with variations, namely fiber treatment with liquid smoke immersion for 1, 2, and 3 hours. Furthermore, it is heated at a temperature of 40ºC for 30 minutes. Furthermore, SSK-reinforced composite specimens are made by preparing resin and fibers with a fiber length of 10 mm, 70% SSK composition, and molded, then composite acoustic specimens are made. The results of this study obtained environmentally friendly composite materials for soundproof room partitions, where the acoustic properties of SSK-reinforced composites show that the treatment can increase the sound absorption coefficient. So, it can be concluded that SSK-reinforced composite acoustic materials can be used as environmentally friendly room partition materials.
Assistance in Establishing Microenterprises for Traditional Medicine (UMOT) and Implementing The Certification Procedure for Good Manufacturing Practices for Conventional Medicines (CPOTB) in The Dasa Wisma, West Tanah Tinggi Village, Ternate City Nur, Amran; Marwati, Eri; Tjiroso, Bambang; Fiskia, Ermalyanti
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 8 No. 1 (2025): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v8i1.5453

Abstract

The Moloku Kie Raha area in North Maluku is a remote region in the northern part of the Indonesian archipelago. It has great potential for natural resources, particularly in producing essential commodities such as cloves, nutmeg, and mace. However, a group of women from RW 4 Tanah Tinggi Barat Subdistrict needed to understand the procedures for establishing UMOT and implementing CPOTB and the necessary documentation. The goal of the community service was to assist the RW 4 Dasa Wisma Women group in Tanah Tinggi Barat Subdistrict to establish UMOT in Ternate City and fulfill the CPOTB requirements to obtain BPOM permission. The activities included socialization of UMOT establishment and CPOTB implementation, training in preparing CPOTB documents, assistance in CPOTB implementation and production layout, support with registration (e-Registration), product marketing, and overall activity evaluation. The community service, conducted with a community empowerment framework, proceeded smoothly. The implementing team assisted in establishing UMOT, training in preparing CPOTB documents, assisting in CPOTB implementation and production layouts, registration support, and creating social media and marketplace platforms. The team also assisted with production equipment to meet the required standards, facilitating the Dasa Wisma RW 04 Women's Group business in Tanah Tinggi Barat Sub-district. The service team addressed mothers' economic productivity issues, offering solutions to the Dasa Wisma RW 04 women's group. With the establishment of UMOT for essential oils production, the group can increase economic income through a cost-effective manufacturing process, ultimately boosting their profits.
Co-Authors Ahmad Seng Amran Nur Amrun, Al Amar C.z Bahri LM, Syamsul Ermalyanti Fiskia Ishak Usman Marwati, Eri Mukhlis Mukhlis Muzni Harbelubun, Mohammad Rais, Sandi Rajak, Sahdar Umar, Kifli Umron, Amat Zulfikram, Zulfikram