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INDONESIA
Jurnal Gamma
Published by Universitas Muhammadiyah Malang
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 5, No 2 (2010): Maret" : 6 Documents clear
VARIASI JUMLAH TUMBUKAN PADA CAMPURAN BETON ASPALTERHADAP NILAI DENSITY DAN VOID IN THE MIX ( VITM ) Syaiful Amal, Andi
Jurnal Gamma Vol 5, No 2 (2010): Maret
Publisher : Jurnal Gamma

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Abstract

TAsphalt concrete mix is one type of flexible pavement layer. Asphalt concrete mixture consistsessentially of coarse aggregate, fine aggregate, filler and binder. Aggregate used may be natural orthe result of processing and can also be the artificial aggregate. While grading for asphalt concretemix is Continuously graded. This study aimed to assess the absolute density, ie density of a pavementlayer maximum value. Absolute density is needed in order to predict the quality of road pavementlayers in accordance with the variation of the number of collisions 2x75, 2x150, 2x200, 2x300 and2x400 blows. Then studied the effect of variations in the collision of the Marshall test parameters,which include density, stability, voids of mineral aggregate (VMA), voids filled with asphalt (VFWA),voids in the mix (VITM), flow and marshall qoutient. The results showed a variation of the effect ofcollisions on the value of VITM. specially for heavy traffic comparison of values obtained onvariation of the collision VITM 2x150, 2x200, 2x300 and 2x400 to VITM standard is between 50-60% (collision 2x75). These results indicate that all kinds of variations of the collision above thestandard collision will result in fatigue of materials, pavement materials become damaged as aresult. From the results of this study also obtained the optimum asphalt content for heavy traffic,moderate and mild, respectively, are 6.44%, 6.59% and 6.86%. From the results of this study alsoobtained a density value of the field whose value is based on the optimum asphalt content in successionto heavy traffic, medium and light, which is 2.35 g / cc, 2.35 g / cc and 2.36 gr/cc
MODEL TREE DENGAN SISTEM PERSAMAAN NON LINIER UNTUK PERAMALAN (FORECASTING)ALIRAN SUNGAI SETAHUN KEDEPAN ., Sulianto
Jurnal Gamma Vol 5, No 2 (2010): Maret
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Abstract

Peramalan aliran setahun kedepan merupakan tahapan yang sangat penting dalam perencanaanpola operasi bangunan hidrolik terutama yang berfungsi untuk penyediaan air. Metode peramalankonvensional yang banyak diterapkan saat ini terbukti kurang memberikan hasil yang memuaskan.Model Tree Non Linier yang dikembangkan dalam penelitian ini terbukti secara kualitatif mampumempresentasikan perilaku aliran inflow Waduk Selorejo dan Waduk Lahor yang akan terjadi setahunkedepan.Model Tree Non Linier yang dapat memberikan hasil terbaik adalah sistem persamaan yangdibentuk dari seri data historik yang digeser bulanan, berarti aliran yang akan terjadi pada sebulankedepan (t+1) akan sangat dipengaruhi oleh nilai aliran pada bulan saat ini (t), bulan sebelumnya (t-1), 2 bulan sebelumnya (t-2) hingga 12 bulan sebelumnya (t-12). Dengan menggunakan p runningfactor sebesar 1, maka diperoleh sejumlah 13 persamaan untuk prediksi aliran inflow Waduk Lahordan 14 persamaan untuk prediksi aliran inflow Waduk Selorejo.Implementasi sistem persamaan yang dihasilkan cukup baik dalam mempresentasikan hubunganantara vektor input(seridatahistorik) dengan vektor output(dataprediksi). Hasil perbandingangrafis secara visual menunjukkan bahwa output dari model dapat mengenali pola aliran yang terjadi.Pada pengujian terhadap data trainning diperoleh nilai RMSE sebesar 0,1792 m3/detik untuk datadariWaduk Lahor , dan sebesar 0,0723 m3/detik untuk data Waduk Selorejo. Pada pengujian terhadapdata testing diperoleh nilai RMSE sebesar 2,19 m3/detik untuk data dari Waduk Lahor dan sebesar1,89 m3/detik untuk data Waduk Selorejo.
GENERATOR LISTRIK 100 WATT PUTARAN RENDAH UNTUK PEMBANGKIT LISTRIK TENAGAAIR DAN ANGIN MIKRO : DISAIN, PERENCANAAN DAN PEMBUATAN Suhardi, Diding
Jurnal Gamma Vol 5, No 2 (2010): Maret
Publisher : Jurnal Gamma

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Abstract

The more and more expensive oils from fosil to end in price electric energy more expensivebecause almost all electric station still use fosil fuel, imposible to happenes because stock of fosilfuel more and more small and no renewable again. Energy source drawer for to multiply is electricenergy from nature renewable energy exercise sun energy, win energy and water energy, and moresmall scala, and obstacle stock small generator for water energy and win energy with small scalawith low turn not to be available.In research make to design, planning and making small generator 100 watts with low turning300 rpm, for produce electric power 2,4 kWh/ unit/ day.
DESAIN SANITARY LANDFILL PADA TOPOGRAFI EXTREM DI DESA DONOWARIH KECAMATAN KARANGPLOSO KABUPATEN MALANG Septiropa, Zamzami
Jurnal Gamma Vol 5, No 2 (2010): Maret
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Abstract

Village Donowarih Karangploso District of Malang Regency is one of the areas that havetrouble and waste management in the central (dumped in landfills / TPA) where the existing landfillis very far from the village Donowarih with a distance of approximately more dari15 miles by roadup kontour conditions down so it can be concluded is not likely to be transported to a landfill. Sothat the Village Donowarih require a landfill area (TPA) that is close and be able to serve the communityin the surrounding area.With topography at the foot of the mountain Arjuno the Landfill to be built so the potential topollute the environment, especially water and soil in areas that have a height below the surfaceDonowarih village, so it becomes very important that a comprehensive landfill design which focuseson health aspects of the environment.With reference to kaedah comprehensive planning Landfill is expected to have DonowarihVillage Landfill that meet environmental health standards are accompanied by a simple application ofwaste regulations for the village community Donowarih so it will get additional revenue through therecycling process that accumulates.
DAFTAR ISI GAMMA VOLUME 5 NOMOR 2, MARET 2010 Isi, Daftar
Jurnal Gamma Vol 5, No 2 (2010): Maret
Publisher : Jurnal Gamma

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Abstract

Volume 5 Nomor 2, Maret 2010ISSN : 0216 - 9037Pengembangan Persamaan Perpindahan Panas Aliran Udara Dalam AirAchmad FauzanCatalityc Converter Jenis Lubang Horizontal untuk Mengurangi Emisi Kendaraan BermotorAli MokhtarVariasi Jumlah Tumbukan Pada Campuran Beton Aspal Terhadap Nilai Density Dan Void InThe Mix ( VITM )Andi Saiful AmalGenerator Listrik 100 Watt Putaran Rendah Untuk Pembangkit Listrik TenagaAir dan AnginMikro : Desain, Perencanaan Dan PembuatanDiding SuhardiPenerapan Teknologi Powder Metalurgy Untuk Pembuatan Komponen Mesin Berbasis PasirBesi LokalMurjitoOptimalisasi Penangkapan Gas Hasil Pembuangan Sampah Organik sebagai Sumber BahanBakat AlternativeNur SubekiPotensi Lumpur Lapindo Sebagai Bahan Baku Tambahan Pembuatan Batu BataRofikatul KarimahModel Tree dengan Sistem Persamaan Non Linier untuk Peramalan (forecasting)Aliran SungaiSetahun KedepanSuliantoDesain Sanitary Landfill pada Topografi Extrem di Desa Donowarih Kecamatan KarangplosoKabupaten MalangZamzami Septiropa
PENERAPAN TEKNOLOGI POWDER METALURGY UNTUK PEMBUATAN KOMPONEN MESIN BERBASIS PASIR BESI LOKAL ., Murjito
Jurnal Gamma Vol 5, No 2 (2010): Maret
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Abstract

Metalurgi powder is a commercial workpiece forming process of metal where the metal wasdestroyed first in the form of flour, then flour is pressed in the mold (mold) and heated below themelting temperature of the workpiece to form dust. So that the metal particles fuse because themechanism of mass transport due to diffusion of atoms between the particle surface. Powdermetallurgy method provides a rigorous control on the composition and use of mixtures that can notbe fabricated by other processesIn this study the process of soft magnetic iron production by mechanical alloying powderprocess-based yan metalurgy local iron sand. Base backdrop that the use of local sand from the datawe can from the foundry industry raw materials and large penunjangsebagian still imported. Materialsthat are 100% pengadaanya still relies imported materials are iron ore and alloys (Alloy).Iron filings and sand powder 100 mesh size locally has mixed for 20 minutes. The amount ofpowder added is 25%, 50%, and 75% by weight. Powder which had sifted and mixed and theninserted into molds (dies) that has been coated by the lubricant of zinc stearate on the walls of themold then dikompaksi both single-action pressing with a pressure of 2000 psi in order to obtain asample form of tablets. Sintering temperature of 1000 0C for 30, 60, and 90 minutes later performeddapur.Pengamatan cooling micro structure used optical microscopy and Vickers hardness testsperformed.The results of this study is the optimal value of remanent induction at 25% by weight of sandsintered 90 minutes by 9.4 Gauss and an optimal value of Vickers hardness at 75% by weight ofsand sintered 90 minutes at 501 HV.

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