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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Prosiding Semnastek Frontiers Jurnal Mesin Nusantara GEARBOX Jurnal Pendidikan Teknik Mesin Salaga Journal
Jenly D.I. Manongko
Pendidikan Teknik Mesin Fakultas Teknik Universitas Negeri Manado
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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Pengaruh Variasi Fraksi Volume Dan Lama Perendaman Naoh Terhadap Kekuatan Tarik Dan Struktur Mikro Komposit Serat Eceng Gondok (Eichornia Crassipes) Randalongi, Jemmy Purwanto; Manongko, Jenly Dyliep Isria; Mansjur, Zuldesmi
Jurnal Mesin Nusantara Vol 7 No 2 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i2.22240

Abstract

Komposit terdiri dari dua bahan utama, serat sebagai penguat dan matriks sebagai pengikat. Bahan penguat komposit dapat berupa serat alam salah satunya yaitu eceng gondok. Penggunaan komposit sebagai bahan konstruksi dapat diandalkan sebagai material alternatif dari logam. Dikarenakan sifatnya yang ramah lingkungan dan ekonomis dibanding material logam. Penelitian ini bertujuan untuk  mengetahui  pengaruh  dari  fraksi volume dan perlakuan NaOH serat terhadap sifat mekanik dari komposit. Dalam penelitian ini  menggunakan serat eceng gondok, resin polyester BQTN-157, katalis MEKPO dan larutan NaOH (Natrium Hidroksida). Dengan memvariasikan fraksi volume 25:75%, 35:65% dan 40:60% dan perlakuan perendaman NaOH 3% selama 1 jam, 2 jam dan 3 jam. Metode pembuatan menggunakan hand lay up dengan ukuran 180 mm x 80 mm x 05 mm dan dipotong membentuk ASTM D638-01. Parameter pengujian yang digunakan uji tarik dan struktur mikro. Hasil menunjukan nilai kekuatan tarik maximum didapatkan pada fraksi volume 35:65% sebesar 17,537 MPa, dengan waktu perendaman 3 jam sedangkan nilai kekuatan tarik minimum didapatkan pada fraksi volume 40:60% sebesar 13,186 MPa dengan waktu perendaman 1 jam. Hasil pengujian struktur mikro, rata-rata patahan yang dihasilkan patah getas dan terdapat crack deflation, debonding, void, overload dan  pullout.
Economical Used-Oil Stove for Post-Harvest Energy in Agriculture Mamangkai, Muhamad Khuldi; Sumual, Hendro Maxwell; Manongko, Jenly Dyliep Isria
Salaga Journal Volume 03, No. 2, December 2025
Publisher : Program Studi Teknik Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70124/salaga.v3i2.1851

Abstract

This study aims to develop and test the performance of energy-efficient stoves fueled by used oil as a renewable alternative energy solution for small-scale farmers. The stoves are designed to reduce dependence on subsidized Liquefied Petroleum Gas (LPG) while utilizing the increasing amount of oil waste in rural areas. The method used is Research and Development (R&D) with performance testing through the Water Boiling Test (WBT) and Fuel Consumption Rate (FCR) calculations. The main findings show that used oil stoves have an average thermal efficiency of 32.28%, meeting the SNI 7926:2013 standard (>30%), although slightly below the efficiency of LPG stoves (37.45%). These stoves are able to boil water 3-5 minutes faster than LPG stoves after reaching stable combustion conditions. From an economic perspective, the daily operating cost of used oil stoves is only Rp1,986, or 69.45% cheaper than LPG, and only consumes 4.9% of farmers' monthly income—far lower than LPG, which reaches 16%. With a production cost of IDR 363,000 per unit, this stove is not only affordable but also has the potential to reduce environmental impact through the utilization of waste oil. The research results indicate that used oil stoves are suitable for implementation as appropriate technology that supports energy security and the household economy of farmers.
Co-Authors Abd rizal Suluta Davidsen Oktafianus Mapaliey Denny Maukar frando runtunuwu Hasan, Sumama Hasan hendri panadjo Hendrik J.R. Sumarauw Hendro Maxwell Sumual Herdy Liow Johanis Rampo Mamangkai, Muhamad Khuldi Opit, H. V. Owen Rumajar panadjo, hendri parabelem tinno dolf rompas Randalongi, Jemmy Purwanto Ratag, Lenie Robert Munaiseche Rumajar, Owen runtunuwu, frando Sandy Walintukan Suluta, Abd rizal Sumama Hasan Hasan Takaredase, A. Walintukan, Sandy Yohanes Taduu Zuldesmi