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
 36   37   38   39   40 
RANCANGAN DASAR SISTEM KENDALI UMPAN MAJU PADA SISTEM KEMUDI EMPAT RODA BERDASARKAN MODEL KENDARAAN PENUH B Sampurno; H. A Tjokronegoro; Farida I. M; W Arismunandar
Mesin Vol. 16 No. 2 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
KAJI EKSPERIMENTAL SAMBUNGAN ADHESIF LAPIS TUNGGAL DAN GANDA AKIBAT PEMBEBANAN TARIK I Wayan Suweca; Hernansjah Hernansjah; Soni Taufani
Mesin Vol. 16 No. 3 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This paper presents an experimental investigation of the single and double adhesively lap-bonding joint. The adhesive material used is Metalloam® grade III. The study was performed to investigate the influence of curing time on the shear strength of the bonding. The results show that the shear strength of the bonding joint increases with the curing time. The maximum shear strength was achieved after the curing time attaint 96 hours.
KAJI NUMERIK PENGARUH CACAT RETAK MELINTANG PADA POROS TERHADAP PERILAKU DINAMIK SISTEM POROS ROTOR Bagus Budiwantoro; Ojo Kurdi; Kurnia Nugraha
Mesin Vol. 16 No. 3 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The stiffness of a cracked shaft changes due to the position of the crack. The problem is how to make a general equation of motion that can be used for all crack positions, so frequency response resulted represents the real frequency response of the cracked shaft. The cracked shaft modelling uses the moment inertia of cracked shaft at various crack positions is the first step. The second step is determining frequency response of significant crack position. The third step is determining the equivalent moment inertia of a cracked shaft that represents the condition of the crack. Next, by using Rayleight-Ritz Method and equivalent moment inertia of cracked shaft, the equation of motion that represents condition of cracked shaft can be determined. The results of this equation are Campbell Diagram and response to force excitation due to mass unbalance and asynchronous force. Dynamic behaviors of system are presented for three positions of crack, namely 0o, 90o, and average position. 0o position is the significant position, 90o position gives the smallest change to dynamic behavior of cracked shaft and the average position represents the condition of the cracked shaft.
EFFECT OF RUBBER PARTICLE SIZE DISTRIBUTION ON FRACTURE TOUGHNESS OF RUBBER-MODIFIED POLYMER ALLOYSA Husaini Husaini
Mesin Vol. 16 No. 3 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Makalah ini membahas studi numerik tentang pengaruh besarnya distribusi partikel karet dalam polimer paduan terhadap ketangguhan retak. Analisa metode elemen hingga dilakukan pada daerah deformasi sekitar ujung retak pada pembebanan mode I untuk kondisi small scale yielding. Sekitar ujung retak dimodelkan sebagai material campuran antara matriks dengan partikel karet. Sebaliknya, daerah di luar sekitar ujung retak dimodelkan sebagai material homogen yang persamaan konstitutifnya telah diperoleh dengan analisa model sel satuan dari matriks dan partikel karet. Ikatan sempurna dan ikatan sebagian antara matriks dan partikel karet pada bidang pemisah (interface) diasumsikan di dalam komputasi. Matriks dianggap sebagai material Mises dan partikel karet sebagai material Mooney-Rivlin. Dari hasil penelitian diperoleh bahwa energi yang masuk ke dalam daerah proses retakan, J-integral, adalah lebih kecil untuk jenis bimodal dari pada jenis monomodal. Hal ini sebagian besar terjadi pada kasus ikatan sebagian antara matriks dan partikel karet. Hasil-hasil penelitian menunjukkan bahwa pengaruh perlindungan (screening effects) yang terjadi pada jenis bimodal lebih besar dari pada monomodal.
EFFECTS OF STRESS-STATE ON VOID COALESCENCE UNDER DYNAMICS LOADING Samsul Rizal
Mesin Vol. 16 No. 3 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pengaruh ketebalan benda uji terhadap keretakan pada beban statik telah banyak dilakukan. Kajian biasanya dilakukan dengan menganggap plastisitas ujung retak, yaitu kondisi tegangan dekat ujung retak, berada pada kondisi regangan dan tegangan bidang. Tulisan ini melaporkan hasil kajian numerik dan eksperimental pengaruh kondisi tegangan pada rongga yang menyatu akibat pulsa intensitas tegangan. Durasi pulsa yang digunakan adalah 20, 40, dan 80 μs. Pengamatan terhadap permukaan yang patah memperlihatkan adanya beberapa rongga di daerah inklusi dimuka ujung retak. Rongga utama tersebut terbentuk dari menyatunya rongga-rongga kecil. Hasil pengamatan juga menunjukkan bahwa lokasi rongga utama tidak dipengaruhi oleh durasi impuls, dan ukuran rongga utama akan mengecil dengan menurunnya durasi pulsa. Simulasi metode elemen hingga menunjukkan bahwa normalisasi tegangan hidrostatik di muka ujung retak tidak dapat menjelaskan hasil-hasil dari percobaan. Sebagai contoh ketangguhan retak spesimen dengan tebal 10 mm ternyata lebih kecil jika dibandingkan dengan ketangguhan retak spesimen dengan tebal 3mm. Contoh lainnya adalah daerah terbentuknya rongga yang tidak bergantung pada tebal spesimen.
PREDIKSI TINGKAT KERUSAKAN BATANG ROTOR PADA MOTOR INDUKSI BERDASAR ANALISIS CIRI ARUS CATU DAN CIRI GETARANG Indra Nurhadi; Zainal Abidin; Haris Darmawan
Mesin Vol. 16 No. 3 (2001)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Typically, mechanical vibration signature analysis is one of the essential steps in predictive maintenance activity for rotating machines. This paper discusses a study on the use of motor current signature analysis as a complement to the vibration signature analysis in identifying broken rotor bar in 3-phase induction motors. From literature study[5, 6, 7, 8, 9, 10, 11], it was summarized that the presence of rotor bar faults can be detected through the increase in (1x rpm ± Fs x p) side-bands amplitude of mechanical vibration. In addition, this type of fault is also signified by the increase in (1 ± 2s)Fl side-bands amplitude of motor current. Furthermore, the amplitude of the left side-band of supply current spectra can be used to estimate fault severity.To prove the validity of the theory and to study its feasibility for practical use, experimentation was conducted using a small 2-pole motor of ¼ hp, coupled with a generator. Spectral analysis performed on motor current and body vibration shows results as predicted by the theory.
UJI COBA PROFIL AUS UNTUK MENGURANGI KEAUSAN FLENS RODA GERBONG KKBW KA BABARANJANGK Dahlan Dahlan; Satryo Soemantri
Mesin Vol. 17 No. 1 (2002)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims at finding out the impact of the change of wheel-tread profile from conical profile of 1:40 to worn profile of ORE S 1002 against the wheel wear rate of the cars. To find out the impact of the change of the wheel-tread profile on the ride quality, ride index is measured at the initial stage of the test. The result shows that the ride index value "“ horizontal as well as vertical "“ of the test car is better than that of the reference cars. The wheel wear rate of the test car with worn profile is much lower than that of the reference cars. The lifetime of the reference cars' wheels is around 40 months (± 458,182 km), while the test car with worn profile is estimated to reach 80 months (± 916,364 km).
OPTIMALISASI SALURAN PENAMBAH PADA CORAN ROLL PRESS Rochim Suratman; Oyok Yudiyanto
Mesin Vol. 17 No. 1 (2002)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The high yield rate of casting product indicates the efficiency of casting process. Yield of casting is defined as a ratio between the casting weight to the total weight included the riser and gating system. Increasing yield could be accomplished through the optimizing of riser. Trial and error of the existing alternative designs is the most commonly method. This requires a lot of time and money. Computer software is used in order to reduce this effort. The applied software is AFS solidification system which enable us to simulate the cooling and solidification process. The alternative designs could be simulated on the computer. By using FCD 700 as the base material of Roll press, the research gave an increase of yield, i.e. from 68,5 % yield to 76,6%. yield This is significant for a casting weight of 139 kg.
SIMULASI PERAMBATAN RETAK LELAH PADA POROS AISI 1045 YANG DIKENAI BEBAN DINAMIK LENTUR AMPLITUDO TEGANGAN KONSTAN Akhyar Akhyar; Ahmad Taufik Joenoes; Syoni Suprijanto
Mesin Vol. 17 No. 1 (2002)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The current research was carried out to study the change of stress intensity factor (KI) on the semielliptical cracked crank subject to a constant amplitude cyclic loading. This research was also carried out to find the fatigue crack propagation model, the critical crack depth and to predict the fatigue life. The study was performed by using computer modeling and simulation, verified by series of fatigue tests on 15 mm diameter rod specimens made of AISI 1045 steel. The crack (0.5 mm) was introduced on the specimen surfaces as a crack initiation site. The result shows that, for the same crack depth, the higher the loading magnitude, the higher the stress intensity factor, and also, at the end of the crack propagation, semi-elliptical crack tends to be semi-circular one, or a/c ratio approaching unity (1.0). The fatigue experiment has been successfully verified that the critical crack depth and the fatigue life lie within 89% to 92% accuracy, and 8% to 10% deviation , respectively, compared to those obtained by the computer simulation. Fractography study has also revealed that the fracture path consist of; i) crack initiation site, ii) crack propagation, as indicated by beach mark, and iii) the final fracture.
MINIATUR SISTEM TRANSFER FLEKSIBEL DENGAN PENGENDALIAN TERDISTRIBUSI MENGGUNAKAN PLC Yatna Yuwana Martawirya; Akhmad Hery Kusuma; Yohanes Kurnia Pamungkas
Mesin Vol. 17 No. 1 (2002)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The objective of the present research is to develop a miniature of a module of the Flexible Transfer System (STF). STF is the alternative solution of system transportation in advance manufacturing system environment which considered flexible on its components. The flexibility that can be fulfilled by STF is the flexibility in a route of transportation and the ability to be developed in the future. For these purposes, the control architecture of STF is designed to be distributed and each of the controllers has autonomy to carry out decision making based on its condition. At this research a miniature of STF that consists of a mechanical system module, an executor controller, and a manager controller has been developed, and the communication among the distributed controllers has been carried out and successfully.

Page 38 of 54 | Total Record : 539

 36   37   38   39   40 

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