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All Journal Jurnal Kesehatan Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan EKONOBIS (JURNAL EKONOMI DAN BISNIS) JURNAL LENTERA : Kajian Keagamaan, Keilmuan dan Teknologi INTEK: Jurnal Penelitian Jurnal Teknik Mesin Indonesia Jurnal Ilmiah Maju Indian Journal of Forensic Medicine & Toxicology Jurnal Abdimas Sangkabira Jurnal Teknik Mesin Sinergi Socio-Economic and Humanistic Aspects for Township and Industry Journal of Law, Environmental and Justice El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Sipakainge: Inovasi Penelitian, Karya Ilmiah, dan Pengembangan Journal of Ekonomics, Finance, and Management Studies
Muhammad Irwan
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Journal : Jurnal Teknik Mesin Indonesia

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Rancang Bangun Mesin Penyangrai Biji Kopi Dengan Sistem Kontrol Suhu Otomatis Muhammad irwan; Panggabean, Hasbullah
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v19i02.615

Abstract

This research aims to enhance the quality of coffee bean roasting in Indonesia by designing an automated control-based roasting machine. The machine serves as a solution to the constraints of traditional roasting processes, particularly prevalent in rural areas. In the context of Indonesia's substantial coffee production, being one of the world's largest producers, the coffee bean roasting machine is anticipated to improve efficiency and consistency in the final product. The research methodology employs a design approach, utilizing tools such as lathes, grinders, and welding machines. Materials include a power window motor, hollow iron, angle iron, and other components. The design process comprises several stages, including the construction of the machine frame, agitator design, and the implementation of an automatic control system. Machine testing results indicate roasting levels within standard parameters for light, medium, and dark roasts. The temperature-time comparison graph illustrates consistent temperature changes throughout the roasting process. In conclusion, the coffee bean roasting machine exhibits significant potential to enhance the quality and efficiency of coffee roasting in Indonesia. By incorporating post-harvest technology, it is expected to contribute significantly to increasing the value of agricultural commodities and the overall economic well-being of communities
Analisis kekuatan impak komposit serat batang pohon waru (Hisbiscus tiliaceus) Muhammad irwan; Aras, Neny Rasnyanti M
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.439

Abstract

Environmental conscious technology, or green technology, has become a significant focus for countries worldwide. The development of environmentally friendly materials is a top priority, and it is a major concern for researchers who continue to conduct studies to support the advancement of green technology. Research on the Hibiscus tiliaceus tree bark fiber (known as 'waru' in Indonesian) has become relevant in this context. These fibers have undergone treatment with NaOH and turmeric and are utilized as reinforcements in composites or combined with epoxy resin. This study aims to empirically assess their mechanical properties and is expected to provide valuable insights into the application of green and environmentally friendly technology. The objective of this research is to identify the effects of various treatments. These treatments include immersing the fibers in a NaOH 5% solution for 2 hours, heating the turmeric in a 20% solution to a temperature of 70-80°C, followed by a 2-hour incubation, as well as immersing the fibers in a NaOH 5% solution for 2 hours, followed by heating the turmeric in a 20% solution to 70-80°C for another 2-hour period, with respect to the bending strength of the waru tree bark fiber composites. Impact testing is conducted using ASTM 256, and the results show that the best impact energy, with the highest fracture energy, is achieved with the specimen that underwent the NaOH 5% solution treatment for 2 hours, reaching 2.142 Joules. The best impact strength was observed in specimens without any treatment, with a value of 1.529 Joule/mm².
Co-Authors A. Adriana Amal Abdul Rahman Andi Sundari Aras, Neny Rasnyanti M Barakatul Qamila Dedi Suprianto Deny Satriawan Eka Agustiani EMI SALMAH Evawaty Evawaty Ibnu Nur Hidayat Idawati Idawati Iin Karita Sakharina Imam Maulana Malik Ibrahim Inamovich, Rasulov Ilkhom Irwansyah Irwansyah Jonny Zain Junaedi Yunding Kaharuddin Lewi Lewi Luluk Fadliyanti Maria Ulfah Azhar Massaguni, Massriyady Meilinda Nur Khafifa Musdalifah Muthaharah Najmawati Nur Hidayah Nur Isriani Najamuddin Panggabean, Hasbullah Putu Santika Rina Andriani Rismon Hasiholan Sianipar Risnah Risnah Risnah Risnah Risnah St. Maryam Syamsiah Rauf Titiek Herwanti Titiek Herwanti Usman ' Yul Emri Yulis