cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota bandung,
Jawa barat
INDONESIA
Mesin
Published by Institut Teknologi Bandung
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 539 Documents
 18   19   20   21   22 
SIFAT TERMODINAMIKA CAMPURAN PROPANA/N-BUTANA DAN KEMUNGKINANNYA SEBAGAI SUBTITUSI REFRIGERAN R12 Suwono, Aryadi; Adriansyah, Willy
Mesin Vol 10, No 1&2 (1994)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3650.476 KB)

Abstract

Di bidang teknik pendingin terbitnya kesepakatan Protokol Montreal, mencetuskan masalah yang cukup besar, Karena R12 (CCl2F2,) dan refrigeran sejenis lainnya yang selama ini menjadi refrigeran andalan, tidak akan lagi dapat dipakai dan perlu segera dicarikan penggantinya. Dalam tulisan ini dibahas mengenai peluang pemakaian campuran propana/n-butana sebagai alternatif subtitusi sementara R12 hingga refrigeran pengganti yang lebih baik dan ekonomis dapat diperoleh di pasaran. Untuk prediksi sifat termodinamika campuran tersebut. dalam tulisan ini diusulkan sebuah persamaan tingkat keadaan termodinamika yang dapai dievaluasi dari sifat masing-masing unsurnya. Pembahasan dititik-beratkan pada penjabaran dan pengembangan persamaan tersebut serta hasil yang diperoleh dikaitkan denganusaha untuk mendekati sifat termodinamika R12.
DEVELOPMENT OF EXPERIMENTAL TESTING SYSTEM AND PERFORMANCE MEASUREMENT OF SMALL TURBOJET ENGINE “OLYMPUS” Yuliartha, I.G.K Adhi; Hartono, Firman; Sardjadi, Djoko
Mesin Vol 23, No 1 (2008)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5301.568 KB)

Abstract

This paper describes the development of experimental testing system and performance measurement of small turbojet engine “Olympus” manufactured by AMT Netherlands. Variables that measured in the measurement are turbine exit gas temperature, fuel and air mass flow, compressor rotational speed, and thrust produced. In this testing, the thrust generated by the engine is measured using bending beam load cell that completed with four strain gauge (each load cell completed with two strain gauge). Strain gauge used in this testing is manufactured by Measurement Group, Inc with gauge factor 2.095 ± 0.5%. Air flow is measured by using Pitot tube which is installed in 400 mm long and 107 mm diameter inlet pipe. Measurement sensor of the Thermocouple, which is used to measure turbine exit gas temperature, and tachometer, which is used to measure compressor rotational speed, are connected to electronic control unit and displayed in engine data terminal. Fuel flow is measured by  using digital weight (1 gram resolution) and stopwatch. Fuel consumption at one time interval is recorded manually. The engine revolution was varied from 37000 RPM to 105000 RPM with 10000 RPM interval step. Measurement data are then corrected to get the results on standard pressure and temperature condition. Good agreement between the experiment result and data from references shows that the testing system works as expected.
KAJI NUMERIK DAN EKSPERIMENTAL PENYERAPAN ENERGI TABUNG ALUMINIUM BERGALUR DENGAN BEBAN AKSIAL Hadi, Bambang K; Putra, Ichsan S; Basuki, David; Tedy S, Yanyan
Mesin Vol 22, No 1 (2007)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (459.59 KB)

Abstract

Grooved tubes under axial compression are widely used as efficient energy absorption structures. The energy absorption uses plastic folding mechanisms that are formed during the loading. In this paper, the behaviors of grooved tubes under axial compression loading are discussed. The diameter of the tubes is 100 mm, with 2 mm thickness and the length is 72 mm. The number of grooves is 3 and 7, with the groove’s depth is 1 mm. The study uses analytical method, numerical method using explicit dynamic of ABAQUS as well as experimental methods. The results show that increasing the number of grooves will reduce the mean crushing load, Pm. The numerical analysis is able to predict precisely the final plastic folding form of the tubes compared to the experimental results. The difference of Pm among the three methods varies between 1 – 20%. Further investigation is needed to reduce the differences. In all the studies conducted here, the mean crushing loads of the experimental data are always greater than both numerical and analytical methods.
PERANCANGAN, PEMBUATAN DAN PENGUJIAN SISTEM KENDALI TANGKI GANDA UNTUK ALAT PERAGA KULIAH SISTEM KENDALI Abidin, Zainal; Maryanto, Is; Sutikno, Priyono
Mesin Vol 11, No 3 (1996)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.78 KB)

Abstract

This paper describes the motivation and design criteria for the development of a couple-tank control system which is intended to be used as a demonstration apparatus for a lecture course on Introduction to Control Systems. The work also demonstrates the performances of the controlled system in tracking various types of command inputs, Control strategies implemented to the system are On-Off control, Proportional control and Proportional-Integral control. Influences of dynamic interaction between channels on the performance degradation are also shown in this work. Except as a control system design example, this work is expected to be useful to mechanical engineering lecturers giving courses on Introduction to Control Systems, particularly to those in private universities.
Perancangan Dan Pembuatan Prototype Alat Pengering Cacahan Plastik Daur Ulang Nurprasetio, Ignatius Pulung; Rahardian, Samuel; Budiman, Bentang Arief; Prawisudha, Pandji
Mesin Vol 26, No 2 (2017)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1030.154 KB) | DOI: 10.5614/MESIN.2017.26.2.2

Abstract

Makalah ini menjelaskan proses perancangan dan pembuatan prototipe alat pengering cacahan plastik sederhana. Cacahan plastik basah diperoleh dari hasil proses pencacahan sampah plastik yang telah dicuci dengan air untuk menghilangkan kotoran yang menempel. Proses pengeringan dilakukan untuk menghilangkan kandungan air pada cacahan plastik tersebut. Alat pengering yang dirancang menggunakan mekanisme fluidized bed yaitu cacahan plastik dihembuskan udara panas dalam keadaan terapung. Perhitungan teoritik untuk memprediksi waktu pengeringan cacahan plastik yang dibutuhkan dengan model perpindahan panas juga dilakukan. Selanjutnya, berbagai pengujian dilakukan untuk menilai kinerja alat pengering tersebut. Hasil pengujian membuktikan bahwa alat tersebut mampu mengeringkan cacahan plastik dengan waktu relatif singkat dengan kualitas hasil pengeringan yang baik.
ANGKA KONVEKSI TERMAL ALIRAN FLUIDISI PADA TABUNG HORISONTAL DAN ANGKA REYNOLDS RENDAH Sontowiro, Pawito M
Mesin Vol 13, No 1 (1998)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.856 KB)

Abstract

A fluidized bed is a bed comprises a mixture of solid particles suspension in stream of gas. The heat transfer phenomenon between the surface of immersed body to/from fluidized bed is very complicated mechanism. Aside from the governing variables on conventional convective heal transfer, the rate of heat transfer coefficient in fluidized bed, is also influenced by physical and geometrical properties of solid particle. One of the variables which governs the value of thermal convective heat transfer coefiicient is voidage. The influence of voidage on thermal convective heat transfer coefficient at low Reynolds number will be reported on this paper.
Pengaruh Variasi Diameter O-ring pada Permukaan Silinder terhadap Koefisien Drag Tista, Si Putu Gede Gunawan; Ghurri, Ainul; Putra, I Ketut Suanjaya Adi
Mesin Vol 25, No 2 (2016)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.035 KB)

Abstract

Dalam aplikasi engineering banyak ditemukan peralatan yang menggunakan silinder, seperti tiang penyangga jembatan, cerobong asap, dan sebagainya. Peralatan-peralatan ini mengalami hembusan udara setiap saat, yang menyebabkan kekuatan konstruksinya mengalami penurunan, hal ini disebabkan adanya drag yang arahnya searah dengan arah aliran. Upaya yang dilakukan untuk mengurangi drag adalah dengan memanipulasi medan aliran fluida. Manipulasi aliran fluida dapat dilakukan secara pasif antara lain dengan menambahkan helical strake pada permukaan silinder, menambahkan penghalang di depan silinder dan sebagainya. Dalam penelitian ini manipulasi aliran fluida dilakukan dengan menambahkan O-ring pada permukaan silinder. Tujuan penelitian ini adalah menganalisa pengaruh variasi diameter O-ring terhadap koefisien drag. Penelitian ini dilakukan pada sebuah wind tunnel yang terdiri dari blower, pipa pitot, manometer, timbangan digital, dan silinder. Penambahan O-ring diletakkan pada permukaan silinder dengan variasi diameter O-ring yaitu 3mm, 4mm, 5mm, 6mm dan jarak antar O-ring 30mm. Silinder diletakkan ke arah vertikal. Bilangan Reynolds berdasarkan diameter silinder (60mm) adalah Re = 3,64 x .Dari hasil penelitian menunjukkan bahwa terjadi penurunan koefisien drag dibandingkan tanpa variasi O-ring. Nilai koesisien drag terendah didapat dari variasi diameter O-ring 5mm atau d/D=0,08 dengan nilai 0,650259, dimana terjadi penurunan drag sebesar  24,15% dibandingkan dengan silinder tanpa O-ring. 
SISTEM PRODUKSI TERDISTRIBUSI MANDIRI: PERANGKAT LUNAK INTI PENGEMBANGAN SISTEM PRODUKSI Martawirya, Yatna Yuwana; Setyadi, Rochmad
Mesin Vol 15, No 1 (2000)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.279 KB)

Abstract

The objective of the present research is to develop an application software called MSC (Manufacturing System Core) which is used as a core in the development of a manufacturing system software. The development of MSC is based on ADiMS (A utonomous Distributed Manufizcturing System). An object-oriented modeling method is adopted to represent the autonomous component of the manufacturing systems. The example of minimum application of MSC and the method of extent are discussed to understand the modularity of MSC. Software development technology applied at MSC are discussed to see the ability of MSC in the data sharing with other application.
ANALISIS DAERAH BINTIK MANIS PADA PERANCANGAN RAKET BULUTANGKIS Budiwantoro, Bagus; Suweca, I Wayan; Sibuea, Roby C. M
Mesin Vol 13, No 2 (1998)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.04 KB)

Abstract

One method to increase badminton racket performance is by improving individual players racket. For this purpose, two measurements are necessary, i.e. (1) the racket ‘s location of sweet spot that is inherent due to its manufacturing process and (2) the players "sweet spot", i.e. the spot that the player consistently hit the badminton cock, which for factory manufactured racket is not the racket ’s inherent sweet spot. If the two spots do not coincide, than the original racket meet spot can be shi/ted until it coincides with the player sweet spot, making the racket performance to be maximised.
RANCANGAN DASAR SISTEM KENDALI UMPAN MAJU PADA SISTEM KEMUDI EMPAT RODA BERDASARKAN MODEL KENDARAAN PENUH Sampurno, B; Tjokronegoro, H. A; I. M, Farida; Arismunandar, W
Mesin Vol 16, No 2 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.418 KB)

Abstract

This paper discribes a basic design of feed forward controller on a four wheel steering (4WS) vehicle. The controller directs all wheels to get an optimal maneuver. Controlling the wheels is done by controlling each sideslip angles (βi). The sideslip angles are computed by estimating slip angles (αi). Estimation of slips angles are done by sideslip angles based on full car model. The mathematical model is computed based on all forces that work on each wheels.

Page 20 of 54 | Total Record : 539

 18   19   20   21   22 

Filter by Year

1982 2025


Reset
Filter By Issues
All Issue Vol 30 No 2 (2025) Vol 30 No 1 (2024) Vol 29 No 2 (2023) Vol 29 No 1 (2023) Vol. 28 No. 1 (2019) Vol 27, No 2 (2018) Vol. 27 No. 2 (2018) Vol. 27 No. 1 (2018) Vol 27, No 1 (2018) Vol 26, No 2 (2017) Vol 26, No 2 (2017) Vol. 26 No. 2 (2017) Vol. 26 No. 1 (2017) Vol 26, No 1 (2017) Vol. 25 No. 2 (2016) Vol 25, No 2 (2016) Vol. 25 No. 1 (2016) Vol 25, No 1 (2016) Vol. 24 No. 2 (2009) Vol 24, No 2 (2009) Vol 24, No 1 (2009) Vol. 24 No. 1 (2009) Vol 23, No 2 (2008) Vol. 23 No. 2 (2008) Vol 23, No 1 (2008) Vol 23, No 1 (2008) Vol. 23 No. 1 (2008) Vol 22, No 2 (2007) Vol. 22 No. 2 (2007) Vol. 22 No. 1 (2007) Vol 22, No 1 (2007) Vol 21, No 2 (2006) Vol. 21 No. 2 (2006) Vol. 21 No. 1 (2006) Vol 21, No 1 (2006) Vol 21, No 1 (2006) Vol 20, No 2 (2005) Vol. 20 No. 2 (2005) Vol 20, No 1 (2005) Vol. 20 No. 1 (2005) Vol. 19 No. 2 (2004) Vol 19, No 2 (2004) Vol. 19 No. 1 (2004) Vol 19, No 1 (2004) Vol 18, No 2 (2003) Vol. 18 No. 2 (2003) Vol. 18 No. 1 (2003) Vol 18, No 1 (2003) Vol. 17 No. 3 (2002) Vol 17, No 3 (2002) Vol. 17 No. 2 (2002) Vol 17, No 2 (2002) Vol. 17 No. 1 (2002) Vol 17, No 1 (2002) Vol 16, No 3 (2001) Vol. 16 No. 3 (2001) Vol 16, No 2 (2001) Vol. 16 No. 2 (2001) Vol 16, No 1 (2001) Vol. 16 No. 1 (2001) Vol 16, No 1 (2001) Vol 15, No 3 (2000) Vol. 15 No. 3 (2000) Vol. 15 No. 2 (2000) Vol 15, No 2 (2000) Vol 15, No 1 (2000) Vol. 15 No. 1 (2000) Vol. 14 No. 3 (1999) Vol 14, No 3 (1999) Vol 14, No 2 (1999) Vol. 14 No. 2 (1999) Vol 14, No 1 (1999) Vol. 14 No. 1 (1999) Vol 13, No 3 (1998) Vol. 13 No. 3 (1998) Vol. 13 No. 2 (1998) Vol 13, No 2 (1998) Vol 13, No 1 (1998) Vol. 13 No. 1 (1998) Vol 12, No 3 (1997) Vol. 12 No. 3 (1997) Vol 12, No 2 (1997) Vol. 12 No. 2 (1997) Vol. 12 No. 1 (1997) Vol 12, No 1 (1997) Vol 12, No 1 (1997) Vol 11, No 3 (1996) Vol. 11 No. 3 (1996) Vol 11, No 2 (1996) Vol. 11 No. 2 (1996) Vol. 11 No. 1 (1996) Vol 11, No 1 (1996) Vol. 10 No. 1&2 (1994) Vol 10, No 1&2 (1994) Vol 9, No 1&2 (1990) Vol. 9 No. 1&2 (1990) Vol 8, No 1&2 (1989) Vol. 8 No. 1&2 (1989) Vol 7, No 1&2 (1988) Vol. 7 No. 1&2 (1988) Vol 6, No 1&2 (1987) Vol. 6 No. 1&2 (1987) Vol. 5 No. 1&2 (1986) Vol 5, No 1&2 (1986) Vol 4, No 3&4 (1985) Vol. 4 No. 3&4 (1985) Vol 4, No 1&2 (1985) Vol. 4 No. 1&2 (1985) Vol. 3 No. 2&3 (1984) Vol 3, No 2&3 (1984) Vol 3, No 4 (1984) Vol. 3 No. 4 (1984) Vol 3, No 1 (1984) Vol. 3 No. 1 (1984) Vol. 2 No. 2&3 (1983) Vol 2, No 2&3 (1983) Vol. 2 No. 4 (1983) Vol 2, No 4 (1983) Vol 2, No 1 (1983) Vol. 2 No. 1 (1983) Vol 1, No 1 (1982) Vol. 1 No. 1 (1982) More Issue