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Media Mesin: Majalah Teknik Mesin
Published by Universitas Muhammadiyah Surakarta
ISSN : 14114348     EISSN : 25414577     DOI : 10.23917/mesin
Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 366 Documents
 31   32   33   34   35 
ANALISIS PERPINDAHAN PANAS PADA KACA LEMBARAN JENIS SODA-LIME GLASS Eko Julianto; Doddy Irawan; Bagus Rahardian
Media Mesin: Majalah Teknik Mesin Vol 20, No 2 (2019)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v20i2.8527

Abstract

Kaca adalah produk yang mengalami verifikasi sempurna, kaca juga merupakan gabungan oksida anorganik yang tidak mudah menguap, yang dihasilkan dari dekomposisi dan peleburan senyawa alkali dan pasir serta berbagai penyusutan lainnya sehingga menghasilkan produk yang menghasilkan struktur atom yang acak. Hasil analisa yang telah dilakukan pada proses pelengkungan kaca lembaran jenis soda lime glass menjadi kaca lengkung dengan ketebalan 5mm, didapat perubahan lengkungan kaca sebesar 11,2˚, proses perubahan defleksi kaca dihitung setiap 5 menit dalam waktu 60 menit. Sedangkan nilai aliran konduksi senilai 309,6 joule dan konveksi 636,6 joule. Adapun suhu yang didapat dalam pelengkungan kaca di dalam dapur tinggi atau ruang pembakaran yaitu kurang lebih 500˚-600˚C untuk perubahan temperatur awal kaca yaitu suhu dalam ruang pembakaran 34˚C atau di asumsikan 0˚C menjadi 380,7˚C pada waktu 60 menit kaca sudah mengalami perubahan defleksi Pada proses ini hasil analisa juga akan dibahas pada batas besaran temperatur konduksi dan konveksi untuk mempermudah pengolahan data dan perhitungan laju aliran panas yang didapat pada eksperimen untuk dicoba pada kendaraan minibus.
REDESIGN OF OUTER HOOD PANEL OF ESEMKA R2 CAR TO IMPROVE PEDESTRIAN PROTECTION USING FINITE ELEMENT MODELING Binyamin Binyamin
Media Mesin: Majalah Teknik Mesin Vol 17, No 2 (2016)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v17i2.2881

Abstract

Traffic accidents are terrible scourge that occur in many countries, specially for developing countries where transportation affairs like tangled yarn. Besides functioning as an engine compartment cover, the hood of modern compact SUV can also help to manage the impact energy of a pedestrian’s head in a vehicle-pedestrian impact. This paper presents outer hood design of Esemka R2 that has a potential to improve hood’s ability and also to absorb the impact energy of a pedestrian’s head. The developed method for the design of an outer hood configuration aims to provide a robust design and homogeneous of Head Injury Criterion (HIC) for impact position at WAD 1000 and three different thicknesses (1.25 mm, 1.35 mm 1.50 mm) of outer hood panel of Esemka R2 compact SUV, taking into consideration the limited space available for deformation. The non-linear Finite Element Analysis (FEA) software (Explicit Dynamics) was used in this research to simulate the testing procedurs of head impact for child pedestrian. The results show that the average of comparison dimensional of outer hood panel of Esemka R2 was 4.89 mm. The minimum of deformation space meet the requirement for HIC value which required obtaining robust and homogeneous head impact performance. Outer hood thickness and materials were identified as the factors to influence the stress and HIC value of the hood. By comparing all outer hood panels, aluminium alloy as the best selected material which has the lowest value is 32.78% for the pedestrian protection.
ANALISIS SIFAT FISIS DAN MEKANIS ALUMINIUM (Al) PADUAN DAUR ULANG DENGAN MENGGUNAKAN CETAKAN LOGAM DAN CETAKAN PASIR Masyrukan Masyrukan
Media Mesin: Majalah Teknik Mesin Vol 11, No 1 (2010)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v11i1.3191

Abstract

KAJI EKSPERIMETAL PENGHAMBAT PENJALARAN RETAK DENGAN MENGGUNAKAN PENGAKU Hendery Dahlan; Yudi Dwianda; Meifal Rusli
Media Mesin: Majalah Teknik Mesin Vol 19, No 2 (2018)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v19i2.7498

Abstract

Salah satu penyebab retak muncul di struktur biasanya berawal pada daerah yang mengalami konsentrasi tegangan yang tinggi. Jika pembebanan terus dilakukan maka retak akan terus tumbuh dan menjalar sehingga menyebabkan terjadinya kegagalan. Oleh karena itu, diperlukan suatu cara atau metode yang efektif untuk menahan laju pertumbuhan retak sebelum kegagalan terjadi. Pada penelitian ini akan dilakukan kajian secara eksperimental pengaruh lasan, dimensi pengaku dan jumlah pengaku terhadap beban kritis sebelum retak menjalar. Dari penelitian yang telah dilakukan dapat disimpulkan bahwa pengaku yang diberikan sangat efektif mempengaruhi laju perambatan retak. Selain itu, dimensi pengaku mempengaruhi penghambatan penjalaran retak dimana semakin besar dimensi pengaku maka rata rata beban kritis yang dibutuhkan untuk retak mulai menjalar semakin besar. Sementara itu kualitaspengelasan pada retak sangat mempengaruhi penghambatan retak untuk menjalar.
ANALYSIS OF HYDROCARBON TREATING SYSTEM TO THE EMISSION OFF SPARK-IGNITION FOUR-STROKE ENGINE Binyamin Binyamin; Subroto Subroto; Tri Tjahjono
Media Mesin: Majalah Teknik Mesin Vol 15, No 1 (2014)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v15i1.2294

Abstract

The reduction of carbon monoxide (CO), unburnthydrocarbon (UHC) emission and fuel consumption on spark-ignition four-stroke engine is continuously attempted. The purposes from this research were to determine the effect of Hydrocarbon Treating System (HTS)  on levels of CO, UHC and fuel consumption. This is an experimental research. Its is conducted by comparing the exhaust pollutant concentration such as carbon monoxide, unburnt hydrocarbon and also fuel consumption between standard engine setting and Hydrocarbon Treating System applied. The research variable are HTS flow rate from Q1 = 0 cc/s (without HTS), Q2 = 1,5 cc/s, Q3 = 2 cc/s, Q4 = 2,5 cc/s, and Q5 = 33 cc/s. The research will be done in three conditions which are low, medium and high rotation. The result showed that Hydrocarbon Threating System decrease fuel consumption up to 19,43% with flow rate Q5 = 3 cc/s, but on the other hand it increase CO emission up to 80.84% with flow rate Q5 = 3 cc/s and UHC emission level up to 124.75% with flow rate Q5 = 3 cc/s from engine standart condition.
Total Incremental Method for Solving Nonlinear System of Equation Due to Plasticity of Reissner Plates with Boundary Element Method Supriyono Supriyono
Media Mesin: Majalah Teknik Mesin Vol 8, No 1 (2007)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v8i1.3098

Abstract

In this paper a total incremental method for solving nonlinear system equation due to plasticity of shear deformable plates is presented. The material is assumed to undergo small strains. The von Mises criterion is used to evaluate the plastic zone and elastic perfectly plastic material behaviour is assumed. An initial stress formulation is used to formulate the boundary integral equations. The domain integral due to material nonlinearity is evaluated using a cell discretization technique. Several examples are presented and comparisons are made to demonstrate the validity and the accuracy of the total incremental method to solve the nonlinear system of equation due to plasticity.
PENGARUH KOMPOSISI BATUBARA TERHADAP KARAKTERISTIK PEMBAKARAN DAUN CENGKEH SISA DESTILASI MINYAK ATSIRI Nur Aklis
Media Mesin: Majalah Teknik Mesin Vol 9, No 2 (2008)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v9i2.3163

Abstract

ANALISIS PENGARUH PEMBAKARAN BRIKET CAMPURAN AMPAS TEBU DAN SEKAM PADI DENGAN MEMBANDINGKAN PEMBAKARAN BRIKET MASING-MASING BIOMASS Tri Tjahjono; Abidin Rachman; Subroto Subroto
Media Mesin: Majalah Teknik Mesin Vol 19, No 1 (2018)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v19i1.5807

Abstract

Kaji Eksperimental Pengaruh Variasi Diameter Nozzle Throat Terhadap Thrust Pada Motor Roket Propellant Padat Novi Caroko; Sigit Surya Bagus Setiawan
Media Mesin: Majalah Teknik Mesin Vol 15, No 2 (2014)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v15i2.2069

Abstract

RANCANG BANGUN PEMBANGKIT LISTRIK TURBIN AIR MIKRO HIDRO TIPE CROSS-FLOW KAPASITAS 2.500 WATT Di Kp. MULYASARI -BOGOR JAWA BARAT Firmansyah Azharul; Asep Dharmanto; Wilarso Wilarso
Media Mesin: Majalah Teknik Mesin Vol 21, No 2 (2020)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v21i2.11014

Abstract

To meet the electricity needs at night and the production of agricultural products in Kp. Mulyasari was designed and built a Micro Hydro Power Plant (PLTMH) Turbine which can produce power up to 2,500 Watt. This machine is designed to be easy to install, easy to operate, inexpensive to maintain. The selected turbine type is a Cross-Flow air turbine for a low head. Turbines operate at impulse pressure, where the potential energy of water is converted into kinetic energy through the nozzles to push the turbine's front blades. In the design of this turbine, it is designed, so that it has a long life span, low investment value, minimal maintenance costs, easy installation costs, and is driven by water, thereby conserving natural resources. The turbine is designed based on data from field survey results in Kp. Mulyasari, with results; Head (H) = 1.85 m; Water discharge (Q) = 0.2 m3 / s; Turbine rotation (planned) (n) = 214 rpm; Turbine efficiency (plan) (ηt) = 68%; Density of water (ρ) = 997.8 kg / m3. From the calculation results, obtained the Cross-Flow turbine design specifications as follows: High waterfall (H) = 1.85 m; Water discharge (Q) = 0.2 m3 / s; Turbine efficiency (plan) (ηt) = 68%; Power (N) = 2,497 kW; Rotation (n) = 214 rpm; Specific speed (ns) = 770,4138831 rpm; Road blade diameter (DL) = 0.40 m; Naaf diameter (Dn) = 0.035 m; Steering blade width (B) = 0.032 m; Number of road blades = 26 pieces.

Page 33 of 37 | Total Record : 366

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