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All Journal Rotasi GEMA TEKNOLOGI Abdimas Rekayasa Mesin J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Pengabdian Vokasi Journal of Vocational Studies on Applied Research
Seno Darmanto
Program Diploma III Teknik Mesin Fakultas Teknik Universitas Diponegoro
Aerospace Engineering Arts Humanities Automotive Engineering Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences

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REVITALISASI TUNGKU API SEDERHANA UNTUK PENGERJAAN DAN PEMBENTUKAN LOGAM DI INDUSTRI PANDE BESI Darmanto, Seno; Purwadi, Didik; Hartono, Hartono; Ridwan, Mohd.
Jurnal Abdimas Vol 22, No 1 (2018): Juni 2018
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M), Universitas Negeri Semarang

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Abstract

Kegiatan pengabdian bagi Kelompok Industri Pande Besi dilakukan untuk meningkatkan kualitas produk pande besi. Ada puluhan industri pande besi baik skala menengah dan kecil di Rejosari Pakis Magelang Jawa Tengah dan salah satunya tergabung di kelompok Mijil Karya. Pengembangan kelengkapan sarana anggota industri pande besi pada pelaksanaan kegiatan diarahkan pada peningkatan kapasitas/produktitas dan kualitas produk pande besi. Dan untuk mencapai tujuan tersebut, tim pengabdian menyusun langkah kerja atau kegiatan pengabdian meliputi desain tungku, perbaikan tungku, pelaksanaan di industri mitra. Industri pande besi mempunyai beberapa produksi rutin (selain pesanan) yakni perabot rumah tangga (dandang, panci, tempat lampu, hiasan dinding panci bermotif), senjata (sangkur, pedang, keris, tombak), alat pertanian (pacul, alat bajak), alat industri (pisau masak, sabit, parang dan alat potong lain), kerajinan (lampu, kapal, lambu hias, dan hiasan dinding). Pengerjaan tungku di industri pande besi diawali dengan identifikasi tungku perapian dan renovasi (modifikasi) untuk meningkatkan efisiensi dan keselamatan kerja pegawai. Realisasi renovasi tungku dikerjakan dengan satu lubang nyala api, perbaikan dinding luar dan perbaikan cerobong. Selanjutnya realisasi peralatan tangan untuk pengerjaan di pande besi dilengkapi beberapa peralatan meliputi klem  bangku /catok  /ragum, penggores, penitik, mata bor dan mesin bor, gergaji tangan, gunting plat, kikir, palu, mistar baja, tang dan alat solder. Selanjutnya beberapa peralatan digerakkan dengan tenaga mesin meliputi gergaji, bor baik bor tangan dan bor duduk, gerinda potong, gerinda penghalus.
PENINGKATAN KUALITAS SERAT DAUN PELEPAH KELAPA MELALUI PERLAKUAN ALKALI Darmanto, Seno; Umardani, Yusuf
ROTASI Volume 11, Nomor 4, Oktober 2009
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.433 KB) | DOI: 10.14710/rotasi.11.4.21-25

Abstract

Research is done to analyze treatment (physical and chemical) in increasing quality of coconut leaves fiber. Plot of coconut leaves fiber research is done with determining characteristic of physically coconut leaves, method of making single fiber, treatment technical and testing of strength. Determining of physically coconut leaves characteristic is done by observing and measuring dimension directly and testing water content. Then making of single fiber is done by selecting of coconut leaves, washing, drying and brushing/shaving. Treatment of physically coconut leaves is begun from coconut leaves in sheet shape to single fiber shape. Kind of physically treatment consists of washing, soaking, natural drying and supervised drying. Washing and soaking use water. Natural drying of coconut leaves is done when coconut leaves is sheet. Supervised drying is done with hot air in ±45oC of temperature. Generation of hot air is done with heat transfer from hot water ±60oC of temperature to air in drying pan. The next, washing, soaking and supervised drying is done to prepare coconut leaves that will be used to chemical treatment. Chemical treatment is done with methode alkali. Alkali treatment to single coconut leaves fiber is done with using NaOH solution. The alkali solution is arranged with concentration variation 5%, 10% and 15%. Alkali treatment uses water as solvent. Testing of single coconut leaves fiber is done to refer JIS number R7601 for single fiber. Observing and measuring shows that coconut leave stem has ±230 of coconut leaves. Measuring dimension shows that coconut leaves width have ±1 cm in coconut leaves tip, ±4 cm in coconut leaves center and ±2 cm in coconut leaves stem tip. Water content of coconut leaves can reach ± 50%. Method of making single fiber show that brushing or shaving will be effective when coconut leave is rather dry. Then testing of tensile shows that alkali treatment is trend to increase strength and elongation. The increasing of coconut leaves quality (strength and elongation) will be optimum in concentration 10% of NaOH.
ANALISA PEMADATAN TANAH LIAT DENGAN MESIN EXTRUDER Darmanto, Seno
ROTASI Volume 8, Nomor 3, Juli 2006
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.714 KB) | DOI: 10.14710/rotasi.8.3.20-23

Abstract

Research is done to analyze work performance of extruder machine to compress clay for red brick. Theanalyzing work performance of extruder machine is based on dry density of clay and water content. Research is done inindustry and laboratory with doing observation and taking specimen of clay that had been given treatment in extrudermachine. And based on analyzing data it shows that dry density of clay in extruder machine is in range 1.45 gram/cm3 –1.55 gram/cm3 and water content can be range 27% -31%.
ANALISA KARAKTERISTIK BIODIESEL NYAMPLUNG Darmanto, Seno; Sediono, Windu; Sarwoko, Sarwoko; Triyatno, Triyatno
Gema Teknologi Vol 16, No 4 (2012): October 2011 - April 2012
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (36.37 KB) | DOI: 10.14710/gt.v16i4.4784

Abstract

Seno Darmanto, Windu Sediono, Sarwoko, Triyatno, in this paper explain that making of callophylum inophylum biodiesel fuel is done alkaly transesterification methode. Alkaly transesterification methode use methanol and basa (NaOH) of catalist. Procedur and setting of research that is consisted in material selection, treatment and setting of composition of methanol and catalist, operational temperature, reaction time, speed and mixer technical will effect quality and conversion level of callophylum inophylum biodiesel. And based data analyzer show that conversion of callophylum inophylum biodiesel can reach 90%. Properties of callophylum inophylum biodiesel show viscosity and flash point of callophylum inophylum biodiesel is ligthly higher than diesel fuel. And caloric value of callophylum inophylum biodiesel is slightly lower than diesel fuel. Key words: callophylum inophylum, biodiesel, properties, transesterification.
Modifikasi Mesin Potong Rumput Model Gendong untuk Pemotong Pelepah Sawit Darmanto, Seno; Firdaus, Ghifa; Suryana, Yusuf
ROTASI Vol 22, No 4 (2020): VOLUME 22, NOMOR 4, OKTOBER 2020
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.22.4.242-245

Abstract

The process of modifying a lawn mower into a frond and fruit cutting machine is carried out through several stages including design drawings, component modification, assembly, and testing. Modification of components is done by making adapters from cylindrical iron, the connection of the handle and the holder of the handle. Cutting machine testing uses 2 types of cutting blades namely circular saw blade and chainsaw blades and is applied to cut the frond palm fruit. Based on the processing of test data, the circular saw blade saws one frond with an average time of 20.5 seconds, and cutting 175 palm fronds per hour and consumes 1.09 l/hour of fuel, while for chainsaw blades takes an average of 17.75 seconds, and trims 202 fronds/hour and consumes 1.26 l/hour of fuel
Aplikasi Drum Terbuka dan Pipa Galvanis Untuk Meningkatkan Kinerja Distilator Darmanto, Seno; Sugeng, Sunarso; Nugroho, Adi
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 5 No 1 (2020): Juni
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/j-dinamika.v5i1.1236

Abstract

Revitalisasi instalasi distribusi air dan kondensasi melalui kegiatan pengabdian dilakukan untuk meningkatkan kinerja penyulingan minyak atsiri sirih dan sejenisnya. Skala prioritas pengembangan kelengkapan sarana anggota kelompok usaha bersama pada saat ini adalah menyempurnakan peralatan distribusi air dan instalasi distilasi (kondensasi). Dan untuk penyempurnaan penyulingan minyak adsiri, tim pelaksanan pengabdian menyusun langkah kerja atau kegiatan meliputi pemahaman dan pendalaman minyak atsiri, pengolahan dan perlakuan minyak atsiri, rancang bangun instalasi distribusi air untuk mendukung mekanisme kondensasi minyak adsiri, rancang bangun peralatan penukar kalor dan perlakuan (difokuskan pada mekanisme distilator), pelaksanaan di KUB Sumber Rejeki dan monitoring/evaluasi. Unit kondensor pada prinsipnya terdiri dari pipa minyak adsiri, bak penampung air dan instalasi distribusi air. Instalasi pendingin air pada prinsipnya terdiri dari bak sumur, pompa, pipa dan sambungan, tower penampung air. Modifikasi tungku permanen  dengan kontruksi bangunan (bata, pasir, semen dan bahan penguat lain) akan meningkatkan efisiensi pembakaran bahan bakar
ANALYSIS OF COCONUT FIBER REINFORCED COMPOSITES WITH HOT PRESS TECHNIQUES Darmanto, Seno; Nugroho, Alvin Dio; Fathurrohman , Nur Kholis; Saputra , Imam; Kusni, Muhammad; Muflikhun, Muhammad Akhsin
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1452

Abstract

Natural fibre waste is a material with high material resistance, including fibres derived from coconut fruit. Coconut fruit waste is frequently underutilised and can contribute to environmental pollution if not handled correctly. This study's objective is to convert waste from coconuts into fibres, incorporate them into composite mixtures, and produce robust materials. Using coconut fibre presents a significant advantage in that it is easily biodegradable, reducing environmental pollution. The aim of this research is to produce a composite board material using HDPE plastic and coconut fibre, which is resistant to corrosion, through the hot felting method. This method of producing composite materials results in minimal voids and high material density, effectively reducing the chances of material failure. The composite specimens were subjected to testing following the ASTM D 638-01 standard. Technical abbreviations used throughout the text will be explained upon first use. The study achieved an excellent average tensile strength, strain, and elastic modulus of 22.45 MPa, 7.15%, and 5.13 MPa, respectively. The manufacture of composite materials using coconut coir fibre combined with HDPE plastic through the hot felting method resulted in high material strength, corrosion resistance, and reprocessability.
Pengembangan Tanaman Hias Pucuk Merah dan Tanaman Buah di Areal Embung Darmanto, Seno; Nugroho, Adi; Yuniarto, Yuniarto; Sarwoko, Sarwoko
Jurnal Pengabdian Vokasi Vol 3, No 2 (2023): November 2023
Publisher : Sekolah Vokasi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpv.2023.21173

Abstract

Potensi, peluang dan keunggulan-keunggulan desa Banaran belum mampu menggerakkan ekonomi kerakyatan secara maksimal. Beberapa potensi dan keunggulan lain desa Banaran Cepogo Boyolali meliputi pertanian dataran tinggi, peninggalan sejarah, seni dan budaya, pemandangan alam, waduk/embung dan potensi jasa juga belum digarap secara terintegrasi. Realisasi kegiatan pengabdian di mitra Pokdarwis pada prinsipnya dilakukan dengan penguatan industri ukir tembaga dan wisata sekitar embung. Pengembangan wisata di sekitar embung diprioritaskan penanaman tanaman hias dan buah. Tanaman pucuk merah dan buah terutama mangga merupakan tanaman yang mudah ditanam dan berkhasiat cukup banyak di bidang kesehatan
Aplikasi Peralatan Tekuk Plat untuk Industri Berbasis Logam UMARDANI, YUSUF; DARMANTO, SENO
Jurnal Pengabdian Vokasi Vol 3, No 2 (2023): November 2023
Publisher : Sekolah Vokasi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpv.2023.21544

Abstract

The potential, opportunities and advantages of the metal industry in Mliwis Cepogo have not been able to drive the people's economy optimally. This condition will be even more complicated because the metal industry, especially in production units, is constrained by equipment for workmanship. The realization of service activities at Zazen Art Galeria partners is principally carried out by strengthening the copper engraving industry, especially production units with the application of plate bending machines. The application of plate bending machines can improve product quality and quantity and increase productivity in production units. The plate bending machine's performance can be improved by applying hydraulics as a plate driver/presser
ANALISIS KINERJA MOTOR BAKAR PENGGERAK GENERATOR SET DENGAN CAMPURAN BAHAN BAKAR PERTAMAX DAN ETANOL Wibisono, Anggit; Handayani, Sri Utami; Darmanto, Seno
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7467

Abstract

Energi merupakan salah satu kebutuhan utama penunjang kehidupan manusia modern. Salah satu bentuk energi yang digunakan oleh manusia adalah energi listrik. Energi listrik dihasilkan oleh peralatan pembangkit listrik yaitu generator. Penggerak mula generator skala kecil menggunakan motor pembakaran dalam (motor bakar) dengan bahan bakar minyak. Tingginya emisi pada pembakaran di generator set dikarenakan rendahnya efisiensi motor bakar yang salah satunya berasal dari rendahnya kualitas dari bahan bakar yang digunakan. Salah satu cara untuk menanggulanginya dengan meningkatkan efisiensi motor bakar yaitu menambahkan etanol pada campuran bahan bakar pertamax. Pembuatan tugas akhir ini dilakukan dengan tujuan untuk mengetahui kinerja motor bakar sebagai penggerak generator set dengan bahan bakar campuran pertamax dan etanol. Kinerja motor bakar yang dimaksud menghitung daya mesin, konsumsi bahan bakar spesifik, efisiensi thermal, dan emisi gas buang dari pengujian alat generator set skala laboratorium. Variabel pengujian adalah campuran bahan bakar pertamax dengan etanol 5%, 10%, 15%, dan beban generator (Watt). Alat uji yang digunakan dalam proyek akhir adalah genenerator set yang dikopel dengan mesin 4 tak 1 silinder General ET-3200L. Hasil pengujian menunjukkan bahwa kinerja mesin dengan bahan bakar campuran pertamax dengan etanol 10% lebih tinggi dibandingkan bahan bakar pertamax murni, campuran etanol 5% dan campuran etanol 15%.Kata kunci : generator set, bahan bakar, pertamax, etanol, kinerja motor bakar
Co-Authors Abdurohman, Hasan Adi Nugroho Al Ayubbi, Irfan Baehaqi Budiharja, Yuniar Anis Daryono, Mohammad Didik Ariwibowo Eko Julianto Sasono Fathurrohman , Nur Kholis Ferdiyanto, Riky Firdaus, Ghifa Haqni, Firdaus Kurniawan Hardyanto, Arief Prakoso Hartono Hartono Ireng Sigit Atmanto Juli Mrihardjono Kusni, Muhammad Margaretha Tuti Susanti Muhammad Akhsin Muflikhun Mukhamad, Alaya Fadlu Hadi Murni Murni Nina Mardiana (F01108057) Nugroho, Alvin Dio Nugroho, Galih Satrio Permana, Bagus Hendra Pohan, Herman Abidin Putra, Sulthonul Ridwan, Mohd. Saputra , Imam Saputra, Galih Satria Hendri Sarwoko Sarwoko Siswahyudianto Sri Utami Handayani Sriyana Sriyana Sunarso Sugeng Susastro, Susastro Sutrisno, Sutrisno Triyatno Triyatno Wibisono, Anggit Wiji Mangestiyono Windu Sediono Yuniarto Yuniarto, Yuniarto Yusuf Umardani Yusuf, Bakharuddin