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All Journal TEKNIK Rotasi GEMA TEKNOLOGI Abdimas J-Dinamika: Jurnal Pengabdian Kepada Masyarakat
Seno Darmanto
Program Diploma III Teknik Mesin Fakultas Teknik Universitas Diponegoro
Arts Humanities Computer Science & IT Education Engineering 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.
MENGANALISA UNJUK KERJA PENGERINGAN IKAN TERI DENGAN SISTEM SIRKULASI UDARA PAKSA Darmanto, Seno; Setyoko, Bambang
TEKNIK Volume 28, Nomor 2, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.459 KB) | DOI: 10.14710/teknik.v28i2.2137

Abstract

Experiment is done to know the performance of “teri/stolephorus” fish drying with forced air flow system. Theperformance of fish drying is based on moisture of fish, fan/fan velocity, operation temperature and time. Theresearch is done at laboratory by using drying machine with forced air flow system. Based on data analysis itshows that the moisture of fish achieves 20% on fan velocity maximum 2,8 m/s and times operation 3 hours
KAJIAN PELEPAH KELAPA SEBAGAI SERAT KOMPOSIT (STUDY OF COCONUT BRANCH AS COMPOSITE FIBER) Darmanto, Seno; Sediono, Windu; Setyoko, Bambang; Murni, Murni
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (188.107 KB) | DOI: 10.14710/teknik.v28i1.2075

Abstract

Research is done to analyze coconut branch fiber as car body composite. Analyzing is based onmaterial, composition, and strength of material. Research was done in laboratory. Coconut branchfiber is obtained by natural drying process and cutting to become fiber with ±0,5 mm of length.Reinforcement and binder is determined polyester resin. Coir (coconut fiber) have 1.15 kg/m3 ofdensity, 1.15 MPa of strength dan modulus elastisitas 4 – 6 GPa. And based on specimen and studyof literatures can show that increase of cellulose of natural fiber will increase modulus of elasticity.The Increasing of modulus of elasticity will be maximal with cellulose more than 60%. Color ofspecimen is transparent yellow.
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
Co-Authors Adi Nugroho Bambang Setyoko Eko Julianto Sasono Firdaus, Ghifa Hartono Hartono Margaretha Tuti Susanti Murni Murni Nina Mardiana (F01108057) Ridwan, Mohd. Sarwoko Sarwoko Sri Utami Handayani Sriyana Sriyana Sunarso Sugeng Triyatno Triyatno Windu Sediono Yoga Yuniadi Yusuf Umardani