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ROTOR: JURNAL ILMIAH TEKNIK MESIN
Published by Universitas Jember
ISSN : 1979018x     EISSN : 24600385     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 10 Documents
 1 
Search results for , issue "Vol 4 No 1 (2011)" : 10 Documents clear
PENGARUH BESAR ALIRAN GAS TERHADAP CACAT POROSITAS DAN STRUKTUR MIKRO HASIL PENGELASAN MIG PADA PADUAN ALUMINIUM 5083 Salahuddin Junus
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The amount of gas flow speed is a parameter of classification that can affect the quality of results of the classification and structure of the micro. One of the functional use of protective gas to protect the molten metal (weld pool) of elements in atmosfer. The use of high-speed gas flow is used to examine the influence of gas flow to the disabled porosity that occurred in the classification of MIG on aluminum alloy 5083. There are three variations gas flow speed is used to examine the influence of impaired quality of welded porosity that occurred in the classification of MIG. Test results obtained by the largest defect porosity occur at the speed of gas flow 12 liters/minute with a density of 2.2 g / cm ³ and the porosity as much as 46% with the lowest value of pull strength 51.150 MPa. Grants flow speed gas is an increasingly large number of particles of magnesium silicate (mg2si) and will mg2al3 reliability increased material, the content of zirconium (Zr) and some titanium (Ti) role as the resultant refiner details (grain-refiner), increased levels of refinement details with increasing heat input and speed welding. Keywords: aluminium welding 5083, gas flow, radiography test, penetran test, density, porosity, tensile strenght, micro structure
ANALISA TEGANGAN-REGANGAN PRODUK TONGKAT LANSIA DENGAN MENGGUNAKAN METODE ELEMEN HINGGA Santoso Mulyadi
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

In any design done must consider the strength of the staff. The strength that must be considered regarding the dimensions, materials, and stick structure. In the previous elderly rod product design, structural analysis found that by just using the help of software, so that the power structure of the stick product has not yet been fully elderly a top priority. This is because the previous data was found that the maximum load that can be received by elderly stick it is 45 N. It appears that the greatest stress occurs is still under the stress of the material itself permits. The voltage that occurs on the order of 6.47e +006 N/m2 located on the handle of the stick while the minimum stress acting on the order of 1.29e-008 N/m2 pipe located at the upper stalk. So the calculation needs to be done manually to review the results of previous calculations, in order to improve and enhance the strength of the product stick elderly. Finite element method is a numerical method used to solve technical problems and a symptom phisis metematis of which include stress, strain, strength, and vibration analysis. This finite element method to compare between the calculations using CATIA software and using the calculations manually. In this case the finite element method to be used is a 2D finite element method (field) is a triangular element with 3 nodes. Using Finite Element Method, the biggest stress on the element 5 with a large voltage of σx = 2.505 x 104, and the biggest strain on the element 3 with a large strain εx = 0.272. And failure obtained Theory states: Maximum Normal-Stress Theory declared safe. Because it is still within safe limits. Maximum Shear-Stress Theory  declared unsafe.   Keywords: stick, stress, strain and finite element
ANALISA PENGARUH KARAKTERISTIK KEKUATAN PERSAINGAN PORTER TERHADAP KINERJA SEKOLAH DENGAN PENDEKATAN BALANCED SCORECARD Robertus Sidhartawan
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The Schools have to anticipate the influence of external environments. The external environment analysis consist of the macro and micro analysis. The micro analysis used Porter`s five force model of competitiveness consist of threat of new entrans, the bargaining power of supplier, the bargaining power of customer, threat of substitutes schools  and rivalry among existing schools. The purpose of this study was to examine the Porter`s five force model of competitiveness on organizational performance of  school in balanced scorecard approach. Data for this study were collected from middle schools using a self-administered survey questionnaire. Hypothesis test showed that threat of new entrans, the bargaining power of supplier, the bargaining power of customer, threat of substitutes schools  and rivalry among existing schools examined had a significant impact on school performance in balanced scorecard approach.  but partially only threat of new entrans, the bargaining power of supplier, and rivalry among existing schools are significantly influence on schools performance in balanced scorecard approach. but for  the bargaining power of customers, and the threat of substitutes schools aren’t significantly influence on schools performance in balanced scorecard approach. Keywords: external environment,  micro environment analysis, Porter`s five force model of competitiveness, performance, balanced scorecard
ANALISIS PENENTUAN PRIORITAS VARIABEL KLASTER INDUSTRI GENTENG UNTUK PENYUSUNAN STRATEGI PENGEMBANGAN KLASTER DENGAN MENGGUNAKAN ANALISA FAKTOR (STUDI KASUS INDUSTRI GENTENG DI KAB. JEMBER) Dwi Djumhariyanto
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The presence of roof tile companies in Tamansari - Wuluhan - Jember has not shown the existence of synergies between companies and with other elements in order to improve innovation and business efficiency. This was reflected in most of the production process to the marketing of roof tile products that are still performed as an individual company. In other words, the concentration of roof tile companies in Tamansari stopped only to the extent of an industrial roof tile. Whereas, by making a group of roof tile companies in a certain area allows for collaboration between companies as well as with other elements in these area to improve business efficiency as well as the creation of a new innovation related to the roof tile industry. This researh aimed at identifying cluster variables of roof tile industry that will provide competitive advantage for the roof tile industry, and determine the cluster variables priorities that can be used as a reference to arrange a cluster development strategy in the future. Determination of the cluster variables based on the concept of Porter's Diamond Model. Roof tile industry cluster variables identified are: The Quality of Labor, Capital Access, Transportation Facilities, Telecommunication Facilities, Excellent Quality of Roof Tile, Suppliers Companies, Industrial Equipment Provider Companies, Roof Tile Buyer Companies, Financial Institutions, Transportation Companies, Distributors of Roof Tile Companies, Roof Tile Business Associations, Companies Strategy, Organizational Structure, Similar Companies, Job Training Centers, Universities, Corporate Tax, Legal and Quality Standards. Determination of the cluster variable priority to cluster development strategy using factor analysis, with the following results: Related and Supporting Industries Factor with variables as follow: Suppliers Companies, Industrial Equipm[1]ent Provider Companies, Roof Tile Consumer Companies, Financial Institutions, Transportation Companies, Roof Tile Distribution Companies, Roof Tile Business Associations; Factor Condition Factor with variables as follow: The Quality of Labor, Capital Access, Transportation Facilities, Telecommunication Facilities; The Role of Government Factor with variables: Employment Training Centers, Universities, Corporate Tax, Legal and Quality Standards; and Firm Strategy, Structure and Rivalry Factor which the variables: Companies Strategy, Organizational Structure, Similar Companies. Keywords: competitiveness, diamond model, industrial cluster,  small and medium enterpris 1 Staf Pengajar Jurusan Teknik Mesin Fakultas Teknik Universitas Jember  
PENGARUH PEMASANGAN SIRIP PENGARAH PADA BUFFER TERHADAP UNJUK KERJA MOTOR BENSIN Muh Nurkoyim Kustanto
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Perfect combustion can improve engine performance and save fuel consumption. One of the requirements perfect combustion is a homogeneous mixture of fuel and air when entering the combustion chamber. Air and fuel mixture to become homogeneous in case of turbulence in the mixing. Buffer with director fin is used to provide additional mixing time between air and fuel at the same time create a turbulent flow before entering the combustion chamber. In this study the buffer fitted with director fins with different variations. The number of fins variation used in this study are 3, 4, 6, 8 and 10 with a variation of the angle are 45o and 60o. The analysis was conducted on the effective power and torque output and the FC (Fuel Consumption) needed from each variation condition buffer. From the results of testing on the condition of the buffer with 3 fins angled 60o obtain the highest effective power increase 5.92% and increase in the highest torque 2.66% when compared with the buffer without fins. The lowest FC (Fuel Consumption) in the buffer with 3 fin angle 60 ° when compared with the buffer without any fins at 4000 rpm with a 11.15% difference. Keywords: homogeneous, turbulent, buffer and fin
KARAKTERISTIK PHISIK DAN STRUKTUR MIKRO KOMPOSIT LOGAM ALUMINIUM-GRAFIT HASIL PROSES METALURGI SERBUK Agus Pramono; Salahuddin Junus
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Composite graphite alluminium represent the material with the nature of good mechanic and also light mass so that able to economize the fuel. Composite graphite alluminium made with the method of powder metallurgy with the step of making mixing powder, compaction and sintering. Composite this upon which for the application of bearing self-lubricating, so that have to measure up to the high mechanic. Nature of the will not be reached when matrix by reinforce do not tying. To improve that matter, need the drenching and detention of time sintering. This research use the volume faction 92% alluminium and 8% graphite and 10% Magnesium as wetting agent. At drenching process conducted by a graphite veneering as reinforce use the condensation HNO3 to yield metal oxide which variation 20 ml, 40 ml and 50 ml HNO3 with the time sintering 15 minute, 30 minute and 60 minute. At this research done by examination density, porosity and micro structure perception. Result of research indicate that the time hold up the sintering progressively mount hence density go up and porosity descend so that yielded a closer micro structure but accompanied also deffect becoming initial crack from composite material, optimum variable yielded at 20 ml HNO3 and time sinter 60 minute with the value density 2,48 g /cm3 and porosity 17,2 %. Keywords: composite, sintering and powder metallurgy
STUDI PERBANDINGAN KETAHANAN KOROSI STAINLESS STEEL TIPE SS 304 DAN SS 201 MENGGUNAKAN METODE U-BEND TEST SECARA SIKLIK DENGAN VARIASI SUHU DAN PH Sumarji Sumarji
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

There are many failures in a structure that is caused by the damage of the metal that support them. One of the problem which can cause the damage of the metal is corrosion. With its action, corrosion can make a metal  become thin, and in some cases can make a crack and fracture. Some factors are determine how fast the process is occured in corrosion process, for examples are the oxygen concentration, degree of acidity, and temperature. The purpose of this research is to know how is the role of that factors in corrrosion process. This research is implemented in three condision of temperatures (300 C, 500 C, 700 C), variation of HCl’s pH (0, 1, 2), and cycle environments condition. That will be combined and will be tested for about 7 days. After this execution, material will be measured for the decrease of the weight to give the value of corrosion rate. From this experiment, the rate of corrosion rises by increasing temperature and the decreasing pH condition. In all condition of this experiment, the SS 304 Stainless Steel has the better resistant to the corrosion in HCl environment.  The highest corrosion rate of cycle condition is 36.119,4 mpy for SS 201 Stainless Steel, and 515,5 mpy for SS 304 Stainless Steel. Form the micro photographs of corrosion happened on SS 201 Stainless Steel is pitting corrosion and SS 304 Stainless Steel is uniform corrosion. Keywords: Stainless Steel, Cycle and Corrosion
Front Section Fahrur Rozy
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

PENGARUH DIAMETER PIPA SALURAN GAS BUANG TIPE STRAIGHT THROW MUFFLER TERHADAP UNJUK KERJA MOTOR BENSIN EMPAT LANGKAH Andi Sanata
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Exhaust muffler system is commonly called is one vital part of a motor vehicle. This serves as an exhaust silencer is removed from the machine until at a certain noise level permitted with little possibility of a decline in torque and engine power. This study aims to determine the influence of the exhaust pipe diameter of straight throw gasoline engine performance, pressure, exhaust gas flow rate and intensity of noise generated. From the results of research in getting that throw straight exhaust pipe diameter which was able to improve gasoline engine performance, pressure, flow rate of exhaust gas and noise intensity. This is evident from the results of research that shows that there was an increase by using a exhaust pipe diameters greater straight throw. Keywords: exhaust pipe, exhaust silencer and straight throw
PENGEMBANGAN DAN ANALISIS ERGONOMI KURSI OPERATOR MESIN VULKANISIR BAN DENGAN METODE REVERSE ENGINEERING Yuni Hermawan
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The likelihood of complaints occurring in the tire retreading machine operator is very possible especially if the seats are not as ergonomic. This situation occurs and will be redesign chair  process machine operators with a method of tire retreading Reverse Engineering (RE) with respect to ergonomic aspects. By analysis using finite element software simulations, we can determine the voltage that occurs in part the concept of tire retreading machine operator seat. So it can be seen clearly the force distribution that occurs in material unit concept tire retreading machine operator seat. To calculate the material strength analysis by finite element software can use the help of CATIA V5R14 software. This is intended to get maximum results and an accurate analysis. After the experiment, the voltage that occurs on a cushion of 1.81x106 N/m2 located on the bottom face of the middle cushion while the minimum working voltage is 1.81x105 N/m2 located on the bottom front cushion edges. The voltage that occurs on a cushion of 1.27x108 N/m2 located at the base of the curved pipe connections while the minimum working voltage is 1.27x107 N/m2 located at the base of a straight pipe connection. Ergonomics analysis obtained by using the method Rula when operators run the machine has the injury risk rate value is 2, which shows the attitude of the body is acceptabel and do not need to be changed for the long term. Keywords: ergonomic, chair operator and reverse engineering

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