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Jati, Unggul Satria
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Pengaruh Penambahan Ekstrak Kulit Buah Nipah sebagai Green Corrosion Inhibitor terhadap Laju Korosi pada Baja Karbon ST37 Ulikaryani, Ulikaryani; Fadlilah, Ilma; Jati, Unggul Satria
Jurnal Rekayasa Mesin Vol 17, No 3 (2022): Volume 17, Nomor 3, Desember 2022
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v17i3.4012

Abstract

Ekstrak limbah kulit buah nipah (Nypa Fruticans Wurmb) diteliti potensinya sebagai green corrosion inhibitor dalam menghambat laju korosi pada baja karbon ST37 melalui metode weight loss dan pengamatan morfologi permukaannya melalui Scanning Electron Microscopy. Daya hambat korosi baja karbon ST37 menggunakan ekstrak kulit buah nipah ditentukan pada berbagai persen berat campuran ekstrak pada inhibitor dan lama paparan dengan media korosifnya. Efisiensi inhibisi meningkat dengan meningkatnya persen berat ekstraknya. Efisiensi inhibisi tertinggi sebesar 81,63% dengan laju korosi 0,617 mpy yang diperoleh pada persentase ekstrak 30% dengan lama paparan 12 hari. Hasil yang diperoleh membuktikan bahwa ekstrak limbah kulit buah nipah dapat digunakan sebagai inhibitor yang efektif pada baja karbon ST37 dengan media korosif air laut.
Pelatihan Pengolahan Limbah Kayu Mahoni (Swietenia Mahagoni) Pada BUMDes Banjarwaru Ariawan, Radhi; Laksana, Nur Akhlis Sarihidaya; Jati, Unggul Satria; Tarigan, Roy Aries Permana; Girawan, Bayu Aji; Wanti, Linda Perdana; Prasetya, Nur Wachid Adi; Ikhtiagung, Ganjar Ndaru
Journal of Community Development Vol. 5 No. 2 (2024): December
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/comdev.v5i2.258

Abstract

Banjarwaru village is one of the villages in Cilacap district with the potential for wooden broom handle craft commodities. The processing of mahogany wood (Swietenia mahagoni) into broom handles produces wood waste that has not been utilized optimally. The accumulation of wood waste is caused by a lack of knowledge among the Banjarwaru village woodworking community regarding the potential dangers, benefits, and economic value of wood waste. Therefore, training in wood waste processing into value-added products such as particleboard is needed. The Community service team together with BUMDes Banjarwaru carried out mentoring activities as a solution method for utilizing wood waste. The mentoring activities carried out consist of educating the negative effects of wood waste on the environment, educating the potential and benefits of wood waste in another processed forms, and training in wood waste processing into particleboard. These series of activities succeeded in increasing the woodworking community understanding of wood waste by 81.6%. The success rate of mentoring reached 91,67% shown by 11 out of 12 mentoring participants understood the potential danger, benefits, and other processed forms of wood waste.
Wood Waste Crushing Machine Training at BUMDes Banjarwaru Sejahtera Wanti, Linda Perdana; Laksana, Nur Akhlis Sarihidaya; Jati, Unggul Satria; Tarigan, Roy Aries Permana; Girawan, Bayu Aji; Ariawan, Radhi; Prasetya, Nur Wachid Adi; Ikhtiagung, Ganjar Ndaru
Pengabdian: Jurnal Abdimas Vol. 2 No. 3 (2024)
Publisher : Yayasan Pendidikan Islam Daarut Thufulah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/abdimas.v2i3.847

Abstract

Background. BUMDes Banjarwaru Sejahtera is a business owned and managed by the people of Banjarwaru Village, Cilacap Regency. Some of the businesses that have been managed by BUMDes Banjarwaru Sejahtera include renting molen machines and making handicrafts such as broom handles and woven bamboo household crafts which produce an abundance of wood waste left over from the production process. So far, this wood waste has been sold to tofu craftsmen as fuel for the tofu production process. Purpose. People can use wood waste as added value by processing wood waste into handicrafts that have high economic value so that they can improve the welfare of the people of Banjarwaru village. Through this community service activity, training will be held on the use of wood waste chopping machines so that processed wood waste can be made into handicrafts such as particle boards or other handicrafts. Method. The method used is a lecture method where the community service team who are lecturers at the Cilacap State Polytechnic provide training on the use of wood waste chopping machines to members of BUMDes Banjarwaru Sejahtera and several wood craftsmen in Banjarwaru village. Results. The results of this community service activity have had a positive impact on business development at BUMDes Banjarwaru Sejahtera. Conclusion. Through this community service activity, it can be concluded that this activity has had a positive impact on the business development of BUMDes Banjarwaru Sejahtera. Apart from this, training in the use of wood waste chopping machines can also increase the competence of wood craftsmen in Banjarwaru village so they can produce more varied crafts made from wood waste.
Optimalisasi Persentase Berat Ekstrak Kulit Buah Nipah sebagai Green Corrosion Inhibitor dengan Variasi Suhu dan Lama Paparan Ulikaryani, Ulikaryani; Jati, Unggul Satria; Triwuri, Nurlinda Ayu
Jurnal Rekayasa Mesin Vol. 18 No. 3 (2023): Volume 18, Nomor 3, Desember 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i3.5063

Abstract

Penelitian sebelumnya telah diketahui bahwa ekstrak limbah kulit buah nipah (Nypa Fruticans Wurmb) memiliki potensi sebagai penghambat laju korosi pada logam. Oleh karena itu, penelitian ini dilakukan untuk mengetahui persentase berat ekstrak yang optimal sebagai green corrosion inhibitor dalam menghambat laju korosi pada baja karbon ASTM A36 melalui metode weight loss dan uji polarisasi potensiodinamik. Daya hambat korosi baja karbon ASTM A36 menggunakan ekstrak kulit buah nipah ditentukan pada berbagai persen berat ekstrak pada inhibitor terhadap variasi suhu dan lama paparan dengan media korosifnya. Efisiensi inhibisi meningkat dengan meningkatnya persen berat ekstraknya. Efisiensi inhibisi tertinggi berdasarkan uji weight loss sebesar 97,87% dengan laju korosi 0,00002 mpy yang diperoleh pada persentase ekstrak 15% dengan lama paparan 4 hari. Sedangkan, berdasarkan uji polarisasi potensiodinamik diperoleh laju korosi terendah terdapat pada sampel dengan persentase ekstrak 12%b/v inhibitor sebesar 1,6747 mmpy dengan efisiensi inhibisi sebesar 76,13% pada suhu 30oC. Berdasarkan hasil uji dapat pula disimpulkan bahwa semakin tinggi suhu paparan maka akan semakin meningkatkan laju korosi. Sedangkan, lama waktu paparan tidak selalu meningkatkan laju korosi pada sampel dengan inhibitor. Hal ini dimungkinkan dipengaruhi oleh efek jenuh dari adsorpsi inhibitor terhadap logam itu sendiri. Sedangkan pada sampel tanpa inhibitor selalu menunjukkan peningkatan laju korosi seiring dengan bertambahnya lama waktu paparan
Pengaruh Variasi Pendinginan Terhadap Kekasaran Permukaan Hasil Proses Milling Pada Material Stainless Steel AISI 304 Jati, Unggul Satria; Prabowo, Dian; Hastuti, Hety Dwi
Infotekmesin Vol 15 No 2 (2024): Infotekmesin, Juli 2024
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v15i2.2371

Abstract

Machining processes in current developments are required to be more environmentally friendly, the use of coolant has a big impact on the environment. So air cooling media is an alternative that can be used to reduce production costs and implement environmentally friendly machining processes. This research aims to determine the level of surface roughness on AISI 304 Stainless Steel at depth of feed and cooling medium. There are two independent variables and a dependent variable. The dependent variable is cutting speed 63 mm/min and feed speed 950 mm/min, while the independent variable is variation. cooling media (room air, dromus, and cooled air) and variations in feeding depth (0.5, 0.75 and 1 mm. The results obtained from this test show the influence of variations in cooling media and depth of feed on the surface roughness of Stainless Steel AISI 304. The tools and materials used are Stainless Steel AISI 304, milling machine, dromus, cold air cooler, thermometer, pressure gauge, and tools. surface roughness tester. Tests obtained the greatest roughness results in the cooling medium using room air which showed a roughness level of 0.974 μm with a cutting speed of 63 mm per min and a feed speed of 950 mm per min. Then the smallest level of roughness is in the cooling media using cold air, namely 0.296 μm with a cutting speed of 63 mm per min and a feed speed of 950 mm per min.
Pengaruh Suhu Pemanas Pada Mesin Pengering Cocopeat Tipe Rotary Dryer Jati, Unggul Satria; Nur Akhlis Sarihidaya Laksana; Prabowo, Dian; Wardani, Nur Indah; Kurniyanto, Prastiyo; Fauzi, Bryan Dwi
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2833

Abstract

The rotary dryer is a machine designed to simplify the cocopeat drying process. The current process still relies on sunlight; this drying process has the drawback of longer drying times and uncontrolled moisture content. The maximum moisture content of the cocopeat must be 15%. This research method is an experiment using several parameters: a drum speed of 6 rpm, heating temperatures of 600°C, 900°C, and 1300°C, with varying drying times of 120 and 150 minutes. The drying process at a temperature of 600 °C resulted in a decrease in humidity efficiency of up to 56.7% with a water content value of 23.8% in 150 minutes and a mass of 3.7 kg. Meanwhile, for drying at a temperature of 1300 °C, the best reduction in efficiency was obtained compared to the previous temperature, a decrease in water content of up to 84% with a water content value of 8.55 and a mass of 2.7 kg using a time of 150 minutes.
Co-Authors Dian Prabowo Fadlilah, Ilma Fauzi, Bryan Dwi Girawan, Bayu Aji Hastuti, Hety Dwi Ikhtiagung, Ganjar Ndaru Kurniyanto, Prastiyo Nur Akhlis Sarihidaya Laksana Nur Akhlis Sarihidaya Laksana, Nur Akhlis Sarihidaya Nur Wachid Adi Prasetya Radhi Ariawan Roy Aries Permana Tarigan Triwuri, Nurlinda Ayu Ulikaryani, Ulikaryani Wanti, Linda Perdana Wardani, Nur Indah