Indonesia Conference Directory

Corresponding Author
Feblil Huda

Institutions
1Department of Mechanical Engineering, University of Riau
2Department of Mechanical Engineering, Andalas University

Abstract
Cutting tool is an important part in machining processes which in its operation frequently runs into wear. The wear cutting tool produces imprecise product with low quality surface, may endanger machine tool by stimulating chatter. In this study, low cost and fast analysis of the wear of cutting tool in turning and drilling processes are proposed. For that purpose, the experimental set-up which consist of operating turning and drilling machine, simple microphone and personal computer (PC) with sound card are set out. The wear of cutting tools are made by applying artificial wear. The sound data from normal and wear cutting tools of operating turning and drilling machines are recorded by using simple microphone and PC with sound card. The obtained sound signals are then analyzed in form of time and frequency domain, spectrogram by Wavelet Transform (WT). It is found that sound signals in time and frequency domain have significant rise of amplitudes in wear condition. The spectrograms exhibit the special contours which sign the existence of wear. The results demonstrate that the proposed method can analyze the cutting tool wear very well.

Keywords
Cutting tool; Turning process; Drilling process; Wear, Wavelet transform

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/HbqEBGU6wkDA

Corresponding Author
Romi Wiryadinata

Institutions
University of Sultan Ageng Tirtayasa

Abstract
Non-Destructive Testing Ultrasonic is needed for structural testing in steel, testing is carried out to determine the condition of damage or hole defects due to corrosion and long-term use. The aims of this research to create a data acquisition system using Continuous Wavelet Transform and the results of the acquisition data are used to find the position of hole defects in steel. The part of data acquisition were pulse generator and amplifier. The signal from the pulse generator is used for input on an ultrasonic transducer with an amplitude of 60 Volts, a PRF of 1 kHz, and a pulse width of 1 micro second. Meanwhile, the gain in the low noise amplifier is 28 dB, its function as a signal receiver from an ultrasonic transducer. The output signal from the ultrasonic transducer is processed using CWT to obtain the coefficient of approximation. The position of hole defects is based on the delta wave from the initial pulse and echo. therefore, hole defects are indicated by a reflection wave defect. The acquisition system in this study was able to identify the location of hole defects in steel. The average depth can be detected by 0.79 cm with an error of 0.244 percent.

Keywords
Data Acquisition, Steel Defect Detection, Continuous Wavelet Transform

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/Lcf4A8Pnpv6W

Corresponding Author
Hamdani Umar

Institutions
(a) Agrotechnology Department, Faculty of Agriculture, Universitas Samudra, Kota Langsa, 24416 Indonesia
(b) Mechanical Engineering Department, Faculty of Engineering, Universitas Samudra, Kota Langsa, 24416 Indonesia
(c) Mechanical Engineering Department, Faculty of Engineering, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
(*) hamdani[at]unsyiah.ac.id

Abstract
In the dry season, water supply for agriculture is minimal. Farmers usually use fresh water from a local well to irrigate agricultural areas. Farmers who have relatively adequate capital, irrigate their agricultural areas using high-energy pumping systems to maintain the quality and amount of their farming products. However, in line with the increasing price of energy in the market, the pumping system - which is commonly carried out on remote agricultural areas that are relatively far from the electricity network - has caused a significant increase in the cost of fuel oil. Therefore efforts to utilize renewable energy available in such agricultural areas need to be encouraged. In this study, the design, the installation, and testing of the performance of the Solar-Wind Hybrid Power Plant (S/W-HPP) have been carried out. This system consists of a 100 WP solar power plant, and a 500-watt wind-turbine power plant module as the primary energy source for drip irrigation pumps in an area of 1,000 m2 of food crops. Performance testing of the S/W-HPP system is carried out by proffering the submersible pump a workload at a flow capacity of 60 litres/minute with 60 watts of electric power. The results from field test performance, then, compared with the simulation results. The final analysis will provide fundamental information in the design of the S/W-HPP generating system in drip irrigation applications.

Keywords
Hybrid energy, solar energy, wind energy, water pumps, agricultural areas

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/PCzMeRxQqAFZ

Corresponding Author
Nuniek Nizmah Fajriyah

Institutions
(a) Automotive Engineering, Faculty of Engineering and Computer Science, Pekajangan Pekalongan Muhammadiyah University, Pekalongan – Indonesia
(b) Magister of Machine Engineering, Faculty of Enginering, Pancasila University

cadoels[at]gmail.com

Abstract
The exhaust gas from the boiler in the laundry industry can reach more than 300 °C. It is the potential energy that can be converted to increase the temperature of feed water through a heat exchanger. In this study, a shell and tube heat exchanger was chosen to increase the feed water temperature with the flow rate of 0.55 kg/s to reach the target of 80 °C. Meanwhile, the mass flow rate of the exhaust gas is 0.9 kg/s with a temperature estimated at 300 - 310 °C. The basic design of the heat exchanger is created to get the main dimensions such as the cross-sectional area (A), the length of the tube (L), the outer diameter of the tube (do) and the total of tube (N). Finally, the main dimensions are optimized by the Taguchi experimental method to obtain the most optimal design.

Keywords
Heat Exchanger, Taguchi Experimental Methode

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/UDAvrzCEx7WX

Corresponding Author
SUNARYO SUNARYO

Institutions
Universitas Sains Al Quran

Abstract
This article presents an analysis of mixer insulators on the gasoline engine to find the most optimal design. A standard insulator has been redesigned by adding a scrambler of air flow placed in the intake manifold. Simulations are carried out on 10 variations, which include standard insulators, 5 and 7 angled insulators which have slopes of 30o, 45o and 60o, and have a thickness of 5 mm. Each model was analyzed using Computing Fluid Dynamic (CFD), with parameters of air velocity 10 m/sec and air pressure 101325 Pa. Simulation results show that mixer insulators with a thickness of 5 mm, 5 blades with a 45o slope angle produce the best turbolence intensity. Meanwhile, another design with a thickness of 5 mm, 9 blades with an angle of 60o slope angle produce the best effect to increase air velocity.

Keywords
Mixer Insulator, Computing Fluid Dynamic, Turbulence

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/UA2gPYbcReFL

Corresponding Author
Ampala Khoryanton

Institutions
Department of Mechanical Engineering, Semarang State of Polytechnic
Jalan Prof Sudarto, SH Tembalang, Semarang, Indonesia
*ampala.khoryanton[at]gmail.com

Abstract
The main challenge often faced by PT. Kubota Indonesia in connection with the quality of production is still a lot of level of disability in the production process, especially in the painting process. The process of painting is highly required according to the standard of both the process and condition of the room so that the results of the painting do not occur defects. Based on production data in the period from October 2018 to January 2019 there were 80% defective products with blistering defects of the total defective products, this needs a deeper analysis of the causes of product defects. Blistering defects in the form of bubbles on the surface of the painting result occur because the standard of air humidity is not achieved when the flash off process is caused because there is no tool to condition the air in the flash off chamber. The purpose of this research is to design an automatic humidity control system model that can be used as an alternative to PT. Kubota Indonesia as a method for reducing humidity so that it can reduce the potential causes of blistering defects. Research methods include problem identification, literature study, design, and manufacture of models and testing. Problem identification is done by using the 5M + 1E method to find the root of the problem. The process of designing and making models is divided into 3 important activities namely designing 3D design concepts using solidworks software, designing a control system software with Arduino Uno and designing hardware models. Tool testing is done by testing the automatic humidity control system model on the prepared test chamber model. The results obtained from this study are models of automatic humidity control systems that can condition the humidity in the test room and maintain the humidity according to the set point.

Keywords
air humidity; automatic humidity control system; production quality; painting process.

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/BgRENdx6JPvp

Corresponding Author
Eddy Erham

Institutions
State Polytechnic of Bandung (POLBAN), Bandung, Indonesia.

Abstract
Air Conditioner(A/C) is a system of air conditioning which serves need of thermal comfort inside a room. Until now, to determine COP of A/C is performed measurement of temperatures and pressures in A/C. Then, it is continued by calculating of COP. Unfortunately, the process take much time. Therefore, it is important to find any new method to obtain COP. In this paper, to solve the problem was designed a COP monitoring system. To do this, the Arduino Uno was uploaded a program of the monitoring system. The system was equipped sensors. And then to display COP was used a Laptop. The results showed that by using the proposed method and the traditional one, it was obtained that COP actual fluctuates about 3.0 in range from 3.14 to 3.51 and 3.2 to 3.5, respectively. In addition, it was predicted that the using of proposed method in illustrated situation can save time by 2 hours or 80%. It can be considered as a promising solution to determine the COP quickly and easily .

Keywords
A/C, monitoring system, COP, Arduino, save time

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/wqZ2ejmQPpbF

Corresponding Author
Eddy Erham

Institutions
a).Department of Refrigeration and Air Conditioning, State
Polytechnic of Bandung (POLBAN), Bandung, Indonesia.
* eddy.erham[at]polban.ac.id

b).Alumnus of Department of Refrigeration and Air
Conditioning, State Polytechnic of Bandung (POLBAN),
Bandung, Indonesia.

Abstract
Air Conditioner (A/C) is a system of air conditioning which serves need of thermal comfort inside a room. On one side, it is an advantage. However, on the other side, the energy consumption of A/C is the biggest in household appliances. In this paper, to solve the problem was designed the control system and display of A/C based on Arduino Uno. In this case, the Arduino was uploaded with a program of control system so that it can function as a controller. Whereas, the display was designed using the Blynk that is supported a Smart-phone and Internet network. The results showed that the response of designed control system is able to maintain the desired temperature with range of error from 0.0 C to 0.2 C and the A/C can be set and monitored from far away via internet. In addition, although, a client and the A/C were separated by distance, the response was almost not delay and stayed accurate. Moreover, it was predicted that the using of proposed A/C in illustrated situation can save energy by 50%.

Keywords
A/C, control system, Blynk, internet, energy saving

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xcd4EXuJpDM6

Corresponding Author
sugeng hadi susilo

Institutions
1Mechanical Engineering Department Politechnic State of Malang
2Electrical Engineering Department Politechnic State of Malang

Abstract
The increasing energy demand is in line with population growth as well as the development of science and technology, and the maximum utilization of energy derived from magnets. The purpose of this research is to design of permanent magnet motor that produces rotation that can be utilized as power plant propulsion, without using fuel oil. The method used is to examine and search the gap of existing patent design and develop it in the form of new design, In the hope of increasing the potential of magnetic energy into a magnetic power plant. By designing the magnetic position and angle of attack on the rotor and stator motor magnet.

Keywords
Magnet motor, prototype, magnetic energy.

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/nF43xvupAwBX

Corresponding Author
Sri Utami Handayani

Institutions
(a-e)Vocational School, Diponegoro University, Semarang, Indonesia
(f) Chemical Engineering, Wahid Hasyim University, Semarang, Indonesia

Abstract
The main problem of the green tea industry today is the low quality and the high need for electrical and fuel energy of withering process (0.48 kwh / kg dry tea or 50.1% of total energy). For this reason, the development of withering process is needed through the high-efficiency agitated inactivator microwave system for producing green tea as a functional fine powder. However the development of engineering technology is still constrained by the integration of upstream into downstream energy processes. In addition, the thermal degradation of the product, caused by heat ionic conduction, penetrates to the tonoplast membrane, thus a small portion of the catechin in the vacuole will turn into theaflavin and thearubigin. Therefore, we need to study the temperature control profiling before it will be applied commercially. The results shows that the continuous microwave-based drying machine speed can be varied from 0.23 cm / s to 2.3 cm/s. The residence time in the microwave can be varied from 0.9 minutes to 9.23 minutes. While the temperature can be varied between 50 C to 120 C. The equipment can be used for withering process of green tea in accordance with the desired time and temperature. While experiments carried out for drying tea leaves give the result of drying time of 14 minutes to reach a moisture content of 0.2%.

Keywords
drying; green tea; microwave; withering

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/DwZgGJYATLdx

Corresponding Author
Muhamad Maris Al Gifari

Institutions
FPTK UPI

Abstract
The growth of vehicle users in Indonesia continues to increase. Increased growth in the number of vehicles will be in line with the growth in demand for fuel and of course the pollution that occurs. Innovations are needed to challenge these challenges, one of which is to use a turbocharger. Turbochargers utilize exhaust gas which still has large kinetic energy to be reused. Use of a turbocharger makes it possible to increase engine efficiency and reduce pollution production. Its just a challenge when combining a turbocharger and diesel engine is not easy. Need alignment so that the two can do a combination (matching). One keyword to match is the mass flow rate. Mass flow analysis is carried out using procedures made by Babagouda. The Limitation area for the turbocharger was successfully formed, but after entering the turbocharger, it turned out that the turbocharger criteria entered were in the same place and outside the criteria. Then this method is compared with the concept of the engine mass flow rate applied to the turbocharger diagram, which is based on Stones. The result is the turbocharger can cover the engine area used. Furthermore, this analysis will be the basis of the algorithm for developing the turbocharger and engine matching process software.

Keywords
Turbocharger, diesel engine, matching, algorithm analysis

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/bdfvHF2E9pz6

Corresponding Author
I Gusti Agung Kade Suriadi

Institutions
(a)Mechanical Engineering Departement, Udayana University, Bali-Indonesia

Abstract
Brake pads is one component in the braking system that directly touches or rubs against the rotating part which serves to reduce speed or stop the vehicle. In general, brake pads are made of asbestos material and alloys, where this material has a temperature resistance of 800˚C, but asbestos materials have carcinogenic properties that have a negative impact on the environment and human health. This research was developed to answer these environmental and health problems, namely to look for alternative brake pads that have a good wear rate and are still able to work at high temperatures. Brake pads is made from a composite hybrid material reinforced with mountain rock waste, shellfish powder, alumina and bound using a phenolic resin polymer (PR-51510i). This brake pads material is produced through a sintering process with an emphasis of 2000 kg for 30 minutes at a fixed temperature of 250° C. The research aims to investigate hardness characteristic and wear rate of hybrid composite that test using the vickers according to standard ASTM E-384. The reinforced materials and matrix polymer composition is 60%: 40%. The results show for the average hardness VHN to 24.72, 25.40, 25.67, 25.74 and 26.53. The average hardness hybrid composite shows the hardness harder than asbestos materials. The value of asbestos lining pads wear is 0.00011 g/m, while the wear value of composite hybrid brake lining pads is 0.00009 g/ m to 0.000071 g/m.

Keywords
Wear Rate, Hybrid Composite, Mountain Stone, Shellfish, Alumina

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xb3eh8H7ckwZ

Corresponding Author
Agung Sudrajat

Institutions
Universitas Sultan Ageng Tirtayasa

Abstract
The objective of research is investigation on characteristics of Particulate Matter (PM) on the food storage room using electrostatic precipitation (ESP). The filter of ESP is a technic of filtration device that removes fine particles gas using the force of an induced electrostatic charge and corona discharge produced by DC high voltage. The experimental research is conducted with the ESP Filter and smoke chamber. Artificial smoke was injected in the chamber and ESP charges the particle by corona discharge that applied to reduce diameter of particulate matter (PM). The results show that the time of smoke discharge from the room is shown in figure 1. Cooper material show slightly faster than the stainless steel and aluminum. Even the results show the cooper faster than others, stainless steel is chosen for application of ESP, because the characteristic of stainless is anti-corrosive and easy maintenance.Research results by 15 mm distance plate is more effective to absorb of particulate matter in the food storage than 9 mm distance plate in both of voltages. The effectiveness of cooper material for reduce of particulate matter diameter is showed. The measurement of PM diameter is using Scanning Electron Microscope with 5000 times enlarged. Experimental data taken by SEM Phenom-Xand Sputtering Quorum. The data shows when using cooper plate, mean diameter of PM are 4.06 μm and 3.64 μm for 9 mm and 15 mm distance plate, respectively. Also, for the stainless-steel and aluminum plate shows the 15 mm distance plate the mean diameter of PM is higher than 9 mm, this is because the effect of corona needs some space between plate for the reaction. One of the main advantages of ESP system is that various types of dust, mist, droplets, etc., can be collected under both dry and wet conditions and also submicron size particles can be collected with high efficiency.

Keywords
electrostatic precipitator, indoor air pollution, smoke, DC high voltage

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/HJBWKka2rxUt

Corresponding Author
Farid Triawan

Institutions
(a) Faculty of Engineering and Technology, Sampoerna University, Jakarta, Indonesia
* farid.triawan[at]sampoernauniversity.ac.id
(b) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung, Indonesia
(c) Research Center for Chemistry, Indonesian Institute of Science (LIPI), Tangerang Selatan, Indonesia

Abstract
Cavitation has been one of the critical issues in turbomachinery operation which often causes the reduction of service life of the components. In order to predict the service life, cavitation intensity (CI) needs to be measured accurately. In this paper, several notable developments of techniques to measure CI are reviewed briefly. Those techniques can be classified into two groups, i.e. direct and indirect measurements. For the indirect technique, a method which estimates the impact load of bubble collapse by inverse analysis is particularly elaborated. For the direct technique, a method which utilizes painting technique to quantify the actual CI is specifically presented. The advantages and disadvantages are also comprehensively discussed.

Keywords
Cavitation intensity; inverse method; paint erosion technique; direct and indirect method

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/Jug2EzmWFyjt

Corresponding Author
himawan hadi sutrisno

Institutions
Universitas Negeri Jakarta

Abstract
Silica is one of chemical elements, which contains a high thermal characteristic compared to other substances. Therefore, this element is frequently utilized as an additional element that can withstand fire propagation rate by providing heating variation in silica production such as 15 minutes, 30 minutes, 45 minutes and one hour of heating time. It gives an impact toward the thermal characteristic from the production process of the silica gel with KOH solvent. The thermal characteristic is tested by using a thermogravimetric analysis. Meanwhile, in order to discover a decrease of the fire propagation rate, a test is conducted with flammability test with paper medium coated by the silica gel. From TGA result, in 300°C temperature, the silica gel heated in the equipment does not experience many changes of mass, although when the temperature is increased to 600°C, there is still a relatively high residual material compared to the initial mass. The test result using TGA and flammability test shows that the silica gel extracted from the rice husk ash by using KOH solvent with 15 minutes of heating time contains a good thermal characteristic compared to other variants. Meanwhile, a sample of paper, which has been soaked with 15 minutes of time variant produces more residuals compared to other samples

Keywords
Silica, Rice Husk Ash, Thermal

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/94xKUEzumeRg

Corresponding Author
Rizki Muliawan

Institutions
a,c,d) Politeknik Negeri Bandung, Jl. Gegerkalong Hilir, Ciwaruga, Kec. Parongpong, Kabupaten Bandung Barat, Jawa Barat 40559, Indonesia
*rizki.muliawan[at]polban.ac.id
b) Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia

Abstract
Propane R-290 as hydrocarbon refrigerant has more benefits from the aspect of thermophisical properties, but the only weakness from this refrigerant is flammable. The distribution prediction of R-290 leakage to an air-conditioned room was simulated using Numerical Simulation of CFD ANSYS FLUENT V.13. The distribution of R-290 with a leakage rate of 0,001kg/s and an airflow of 0,1m/s will run out after 600s, with 0,002kg/s will run out after 300s and with 0,005kg/s and 0,5m/s will run out after 120s. The mass flow rate can influence the refrigerant distribution of leakage effect flowrate. Air flow can increase the dispersion of refrigerant gas and decrease the level of refrigerant amount at any certain point in the room after the refrigerant charge was run out. This momentum effect was due to the impact of supply air initial velocity. The buoyancy effect was due to R-290 density is greater than the air makes the refrigerant flows downward, accumulated and stagnant. Make sure that the contactor relays and other electrical tools have the position of: x=0 m ≤ x ≤ 1 m on y= 0 m ≤ x ≤ 2.6 m and then y= 1 m, x= 0 m ≤ x ≤ 4 m.

Keywords
Refrigerant Distribution, Flammable, CFD Numerical Simulation, Leakage, Hydrocarbon

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/GwLjPg8tDNE6

Corresponding Author
Rusdi Nur

Institutions
Politeknik Negeri Ujung Pandang

Abstract
Sustainable production as a global word, content important elements on all the fields as well as machining processes. Turning is one of the most fundamental and indispensable processes of metal removal in industry. Increasing pollution preventing initiatives globally and consumer focus on environmentally conscious products has put increased pressure on industries to minimize or eliminate the use of cutting fluids. The use of Near Dry Machining (NDM) in machining operation is one of the most effective strategies in this direction to achieve sustainable machining system. This study was purpose to determine the influence of NDM coolant system on surface roughness when turning of mild carbon steel, include power demand. A detailed comparison has been made with dry cutting to assess the process performance on the basis of surface roughness and power demand. The results indicate that providing reduction on surface roughness and power demand more effectively than dry cutting at high speed conditions, thereby to achieve sustainable machining system.

Keywords
Sustainable Turning, NDM, Surface Roughness

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/hMKCVyueWjkE

Corresponding Author
Haikal Haikal

Institutions
Faculty of Mechanical Engineering, Akademi Teknologi Warga Surakarta
Jalan Raya Solo-Baki Km. 2, Kwarasan , Solo Baru, Sukoharjo 57552, Indonesia
*basalamahhaikal3[at]gmail.com

Abstract
Friction welding is one of the solid-state welding processes that is capable of producing high quality joints for dissimilar materials. This study aims to determine the effect of pressure and welding time on the physical and mechanical properties of friction welding joints of AISI 316 and AISI 4140. The physical are microstructure on interface joint and dimension of flash was investigated. The variation of friction pressure used is 50 kg/cm², 70 kg/cm² and 90 kg/cm², while the time variations used are 35 seconds, 50 seconds and 65 seconds. The results of this study indicate that the greater the friction pressure and friction time applied, the greater the tensile strength achieved is 27.31 KN/mm². The effect of increasing friction pressure variations can reduce the value of weld joint hardness, but conversely if the friction time increases, the hardness value in the weld joint area will also increase. It was proven that in the variation of the minimum friction pressure the hardness achieved was 530.5 HVN but the maximum friction pressure variation only reached 352.2 HVN. The greater the friction pressure and friction time applied, the greater flash produced, which is 8.9 mm.

Keywords
Friction welding; Dissimilar metals; AISI 316 austeitic stainless steel; AISI 4140 steel; Physics; Mechanical properties

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/mMXDt8rQqbhL

Corresponding Author
Edi Widodo

Institutions
Universitas Muhammadiyah Sidoarjo

Abstract
Transmission automatic or known as (CVT) is a transmission that makes us feel comfortable because we only need to pull the gas without moving the transmission because the transmission is automatic. Automatic motors not only make driving easier but also facilitate the maintenance of the transmission. However, among racing motorbike lovers, this automatic transmission type motor is lacking in power. So it needs to be modified to the CVT component to improve the performance of the machine. To improve this performance, we analyze pulley and standard roller manufacturers and primary pulleys with 3 kinds of pulley, namely standard angles of 14o, 13o, 12o and roller 11 gram variations to determine the comparison of peforma (horse power and torque). To find out the comparison of the test, we do the test using the Dyno test. From the test results, 13o pulley and 11 gram roller have increased significantly compared to standard 14o and 13 gram roller standard pulleys. This can be seen from the results of an increase in horse power and torque when using pulley 13o and 11gram roller can be obtained on the highest horse power (Hp) at 3246 Rpm rotation which is the highest 9.0 hp and torque (Nm) at the engine speed 2087 Rpm which is 22.16 Nm. While the standard pulley of the factory is 14o and the standard 13gram roller can be seen the highest horse power (Hp) at 3923 Rpm round, which is 7.8 Hp and the highest Torque (Nm) at 2972 Rpm engine speed which is 16.99 Nm. then from the results of this test analysis has increased horse power 1.2 hp and torque of 5.17 Nm.

Keywords
standard pulley; modified pulley variation; roller variation; dyno test

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/gKJhrHn9B64A

Corresponding Author
norman iskandar

Institutions
(a) Department of Mechanical Engineering, University of Diponegoro
Jl. Prof. Sudharto SH, Tembalang Semarang 50275, Indonesia
*norman.undip[at]gmail.com
(b) Department of Mechanical Mechanical Engineering, Semarang State University
Jalan Taman Siswa Sekaran, Gunungpati Semarang, 50229

Abstract
Rice husk is a waste that has a very high amount every year and is spread in several islands in Indonesia. The use of rice husk as a source of energy raw materials is still very low. Rice husk itself in terms of potential amount and distribution has the potential to become a renewable energy source for rural areas so that it can overcome the problem of rural energy needs. By modifying rice husks into bio-pellets, rice husks can be a source of energy for the daily needs of rural communities and it is possible to support the industrial sector in rural areas so that the reach of rice husk waste can be increased and economic functions also increase. The bio-pellet quality reference standard made refers to the SNI standard. To make bio-pellets, flat die mill type machines are used with speeds of 1660 rpm. As an adhesive used cassava flour with a variation of 10% and 20% and a variation of water 15%; 20% by weight of rice husk. Compaction pressure varies by adjusting the gap between the roller and die with a distance of 0.5mm, 1mm and 1.5mm. From the results of testing the characteristics of bio-pellets that have been carried out, the best bio-pellet is obtained from bio-pellets which are processed from a mixture of rice husk with the addition of water by 20% with a roller and die gap of 1.5 mm and an adhesive of 20% where the calorific value is 4182 cal/gram. Of the five SNI standard parameters, for the ash standard, the product made cannot meet the maximum value of the ash standard, namely ash content ≤ 1.5%. For other standards such as having a calorific value of more than 4000 cal/gram, the bonded carbon value is ≥ 14%. Volatile content is less than ≤ 80% and has a density of ≥ 0.8 already fulfilled.

Keywords
biomass; bio-pellets; cassava starch; renewable energy;rice husks; SNI

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/pZRG6tM82HyF

Corresponding Author
Muhamad Yunus Abdullah

Institutions
INSTITUT TEKNOLOGI SEPULUH NOPEMBER

Abstract
Today the supply of fossil energy resources which is increasingly depleting will have a significant impact on every aspect of life in Indonesia. One attempt to overcome this problem by using the Organic Rankine Cycle (ORC) Cycle System. The types of refrigerants used in this study were R141 b, R123 and R245 fa using Aspen plus software simulation. This research focused on journal review and using aspen plus software simulation using the working fluid refrigerant R141b, R123, and R245fa on the ORC as a 1 kW scale electric energy generating machine. The results obtained from the simulation using aspen software plus Organic cycle Rankine Cycle (ORC) using a working fluid refrigerant R141b, R245fa, and R123 at a pressure of 3 bar to a pressure of 11 bar at a temperature of 95 degrees Celcius. The maximum efficiency produced is 8.65 %, 7.79 %, and 8.36 %. Turbine power produced 1005 watts, 896 watts and 770 watts From the simulation results used in the Organic Cycle Rankine Cycle R 245fa has the efficiency value that is best used as a 1 kW electric energy generating plant with an efficiency value of 8.65 %.

Keywords
Aspen Plus Software; Turbine; Evaporator; Condenser; Pump

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/At7hyuvdLnQR

Corresponding Author
N Nazaruddin

Institutions
Universitas Indonesia

Abstract
Abstract. Development of steering system has begun with manual steering, hydraulic power steering, and electric power steering. The current tendency of the steering system market is that electric power steering systems are increasingly in demand by consumers, which is inversely proportional to the other two, namely manual steering and hydraulic power steering which decrease sales. This is due to, among other things, mild operation and ease in the control system. Although for large vehicles each tends to use hydraulic power steering. University Indonesia has succeeded in developing a large type of electric car, the EV-Bus Molina UI. This bus uses a 200 kW main drive motor, for AC 15 kW, for a 4 kW compressor and 7.5 kW Power Steering. The Power Steering system used is Hydraulic Power Steering. Energy efficiency has reached a range of 60-80%. From the survey data about the use of electric power steering in large cars, neither ICE-BUS and EV-Bus systems have used electric power steering. Because of the superiority of Electric Power Steering, it will be converted from Hydraulic Power Steering to Electric Power Steering on the EV-Bus Molina UI. In this paper, we will explain about the existing dynamic motion equation models in electric power steering. Electric power steering uses a motor booster as a driver assist in driving the steering rod. The booster motor position on the electric power steering is in the steering column or on the steering rack. The booster position of the motor will affect the shape of the overall dynamic motion of the electric power steering system. In the beginning, the equation of the dynamic motion of the electric power steering system only involved a system of stiffness and inertia of the wheel drive, column steering, and tire, but further developments also involved viscous damping and friction of each of these components. The components involved in this movement are also increasing, namely rack and pinion, tie rod and drag link. This is due to the more accurate calculation of the torque needed by the motor booster and its control system. In large cars, the difference between city cars is the distance from the steering rod which is almost 2-3 times that of the city car, so the similarity of the motion will also be different. Stiffness equation is needed for the drag link mechanism structure which involves more stems combined between truss and frame. This is what distinguishes it later with the equation of the dynamic motion of the electric power steering system with the city car and its kind.

Keywords
motor booster, wheel drive, stiffness equation, large bus, steering system

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/KvcRXJyqxug4

Corresponding Author
Suyanta Suyanta

Institutions
POLITECHNIC STATE OF MALANG

Abstract
Renewable energy sources as a future energy source must be developed in response to the problem of scarcity of fossil energy which will eventually run out. The study of science and technology as a solution, by utilizing the potential of all natural resources around us. Liquid substances, especially water, have properties that are always flat surface, can be used if you have a height difference, which is often called a potential difference, can be formed into a potential style by applying existing knowledge and technology. As applied by several researchers: Microhydro must have a minimum of falling water - Dam, requires high costs and water source plant governance is maintained - Minimum wind speed wind speed, must be fulfilled - Solar power plants, constrained by weather All of that still utilizes the natural potential that can be influenced by climate, environmental damage, because it occurs due to natural processes. By utilizing artificial potential differences we can utilize liquid fluid properties to be used as renewable energy sources. Through the construction of mechanical levers that can move energy can be generated. That since ancient times this simple plane has been applied a lot, but it is still on a balance (static) level. Based on this concept it can be developed that the support reaction has multiples of the weight and leverage force. Through this rule we develop it into a lever-based energy. A mechanic, which can produce a reaction force and can move at a certain speed to produce energy. So that it produces multiples of the reaction force from the water potential force due to its own weight.

Keywords
Renewable energy, based, levers, without flow

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/BDbeuwGJaXmq

Corresponding Author
Apri Wiyono

Institutions
Universitas Pendidikan Indonesia

Abstract
The quality of the gas has to meet the demand placed on it for use in a gas engine or gas turbine, as well as the demand for reduced emission to the environment. This study applies the design to the following testing of downdraft gasifier with biomass energy for municipal solid waste. The main objective of this paper is evaluating of gas purification unit performance for tar reduction in gasifier systems, integrated producer gas purification unit namely rotary separators. Experiments carried out with AFR gasification system parameters 0.48; 0.5; 0.54 and variations of the exhaust speed of the rotary separator suction fan are 0.9; 3,4; 4,4 m/s. All parameters are interpreted in order to produce producer gas that is clean from tar and impurity and has high calorific value as a substitute fuel for gasoline generators. The experimental results of the 3 variations of the test, found that gasification AFR at 0.54 is the point that produces the largest producer gas with LHV, which is 8500 kJ/Nm3, although the tar content is still relatively high at 3788.1 mg / m3. After roary separator is installed, the tar content can be reduced significantly to 210.45 mg/m3 at scrubbing water discharge 3.33 l/min and rotary separator suction speed of 4.4 m/s. In addition, the electrical power that can be generated at this time is still 60 W, so the installation and process need to be optimized again, especially for air supply to the reactor and syngas cleaning systems.

Keywords
tar reduction, municipal solid waste, rotary separator, air fuel ratio, downdraft gasifier

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/eHAtpgRJTYvV

Corresponding Author
ega berman

Institutions
1) Departemen Pendidikan Teknik Mesin, Universitas Pendidikan Indonesia
Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia.

(*) egatb[at]upi.edu

Abstract
The high cost of electricity rates has affected the demands of the public for the availability of energy-efficient air conditioning systems. This study aims to obtain data on improving performance of air conditioner using capillary tube in tube heat exchanger. Tests were carried out on a wall mounted split AC capacity of 9000 Btu which was modified using a heat exchanger with capillary tube in tube heat exchanger. The use of heat exchanger is intended to ease the work of the compressor so that it can reduce the electricity consumption needed. The expected results of this study are data parameters that indicate that the installation of heat exchanger can improve the energy efficiency of the AC system, so that it will affect the performance of the AC system and save energy.

Keywords
Air conditioner, heat exchanger, performance

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/Ry24GDUvEMKa

Corresponding Author
Suparni Setyowati Rahayu

Institutions
1) Politeknik Negeri Semarang
2) Doctoral Program of Enviromental Science, School of Postgraduate Studies, Universitas Diponegoro Semarang

Abstract
Muffler industry has been closely related to wastewater processing before disposal into environment. Using an aerobic method, the wastewater can be converted into friendly of environment. Unfortunately, waste processing approach before its disposal into the environment has disadvantages. These disadvantages can be approached by a combination of clean production application and wastewater processing product. The production process in a company does not only result in the preferrable end product, but also provide non product output. This non product output may take the forms of material,water, and energy used for the production process but it cannot be the desired end product. Therefore, rather than obtaining added value, it tends to cause cost inefficiency for the industry. Besides, the non product output in the form of contaminant may have negative impact on the community and the environment. The objectives of this study were to identify and to evaluate the efforts of the clean production application by muffler industry in Purbalingga Regency, as well as to provide alternative to obtain good governance as an effort to put the clean production into practice. This study applied a descriptive method combined with engineering by explaining cost calculation for the muffler industry due to the existence of the non product output as compared to the total of production cost. This study revealed the inefficient use of raw material and water as well as hot spots. The calculation of the water, energy and material scales resulted in efficient use of raw material (72.37%), wastewater (82%), and energy (78%). The alternatives for the treatment/improvement dealing with the good governance as an opportunity for the clean production found during the observation were awareness of the required acceptance, monitoring and storage of the muffler raw material storage to produce high quality raw materials, and controlling the water and energy use during the production process.

Keywords
muffler, material, water, energy

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/anK8H7kQA9hy

Corresponding Author
Juniono Raharjo

Institutions
(1)Centre of Excellence, Automotive Control & System
Institut Teknologi Sepuluh Nopember Surabaya

Abstract
Battery management system(BMS) is a main component in the battery pack system for electric vehicle(EV). The function of BMS is to monitor battery cells such as; cell voltage, cell temperature, current in the battery pack. Moreover BMS also able to balance the voltage of the cells so the different in voltage of the cells can be minimized. By having many of these function, BMS can identify battery health based on these parameters. With such important function,in this paper BMS were tested to determine its reliability. The standart testing for BMS reliability is Environment test. In the environment test, some things that are conducted in the environment test are initial temperature cycling, rapid temperature change, mechanical shock and mechanical vibration. From the environment test can be generated information to asses the quality of the BMS in accordance with its function. Furthermore it can reduce the cost to inspect every battery cells in the packs. With environment test as a basis for BMS reliability tester, hopefully good quality is obtained. Future development in BMS reliability testing can also conducted to improve the reliability.

Keywords
battery management system, battery cells health, standart environment test

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xZNrCvqm7Rky

Corresponding Author
Astrie Kusuma Dewi

Institutions
a) Polytechnic of Energy and Mineral Akamigas
Jalan Gajah Mada no 38, Cepu, Blora, Jawa Tengah

Abstract
A heat exchanger, especially a shell-and-tube type, is a heat transfer mechanical device that is widely used in various industrial fields, such as oil, petrochemical, energy and so on. The function of a heat exchanger is to transfer heat from one fluid with a higher temperature to another fluid with a lower temperature. In this research, shell-and-tube heat exchanger was chosen because this type of heat exchanger is the most widely used in the industry in general and in the oil and gas industry in particular. This research was conducted to determine the performance of shell and tube type heat exchangers in terms of thermal and hydraulic. Data acquisition is done by observing in the field. So that the data processing and calculation results are obtained as follows: Shell side pressure drop of 19.73 psi has exceeded the minimum requirement of 10 psi, so it is time for cleaning, tube side pressure drop of 1 , 47 psi is still below the minimum requirement of 10 Psi, the effectiveness of the operation is 57.47% below the design value of 68.73%, and the simulation using excel-solver as follows in the gross condition can be increased to 79.93% effectiveness with a shell side pressure drop (6.2 psi), tube side pressure (9.98 psi) with shell side velocity (0.98 ft / s) and tube side (9.5 ft / s)

Keywords
Heat exchanger; Solver; Evaluation

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/L9MhEdCG62ev

Corresponding Author
EUI SOO KIM

Institutions
Dept. of Safety Engineering, Korea National University of Transportation, Chungju-si, Chungbuk 27469, Korea

es92kim[at]ut.ac.kr

Abstract
The vehicle using compressed natural gas (CNG) trend to be extended in use internationally as optimal counterplan for reducing discharge gas of light oil due to high concern about environment. However, because NGV (Natural Gas Vehicle) is equipped with composite pressure vessel (CPV) and the CPV contain compressed natural gas, the risks in the case of accident is very high. The main cause of rupture accident for NGV is due to the defect of heat treatment for the vessel at the manufacturing stage and the rupture characteristics vary greatly depending on the heat treatment conditions. In this study, explicit dynamics analysis was performed to evaluate the bursting characteristics of the CNG pressure containers by heat treatment. Explicit dynamics analysis is numerical analysis method applied to the large deformation analysis that occurs instantaneously such as collision and explosion. The condition of the defect for heat treatment is that quenching and tempering temperatures applied to the normal vessel were adjusted and explicit dynamics analysis was performed using AUTODYN for each case. It is possible to understand how important the heat treatment process is in the high pressure vessel unlike any product.

Keywords
Natural Gas Vehicle, heat treatment, AUTODYN, Explicit dynamics analysis, Rupture Characteristics

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/hzmc2xgtjyRL

Corresponding Author
Bambang Supriyo

Institutions
1Magister Terapan Teknik, 3 Program Studi Teknik Elektronika, 2,4,5 Program Studi Teknik Mesin
1,2,3,4,5Politeknik Negeri Semarang

Abstract
Abstract— Transmission ratio change in today-s motor cycle rubber belt Continuously Variable Transmission (CVT) are based on centrifugal forces resulted from engine revolution. Compare to manual transmission, this kind of CVT needs higher engine revolution to start engaging the transmision ratio which in turn requiring more fuel consumption. A transmission ratio change concept based on an Electro-mechanical actuator consisting of cam, actuator gears and DC motor has been developed to eliminate the dependancy of transmission ratio on engine revolution. The DC motor rotates the cam through actuator gears. The rotation of the cam causes the primary movable pulley sheave to move in axial direction, which in turn changing the belt-pulley pitch radius and changing the transmission ratio. This research aims to design and implement an electronic measurement system based on Arduino Uno as a data acquisition system and Matlab/Simulink as a controller program to obtain the measurement data of primary pulley and secondary pulley speeds and primary pulley axial position. Based on these data, the transmission ratio can be determined and the relationship between transmission ratio and primary pulley posistion can then be obtained. For future development, these measurement data will be used as important references when developing and testing the transmission ratio controller programs.

Keywords
Keywords— Rubber belt, electro-mechanical CVT, transmission ratio, ArduinoUno, Matlab/Simulink

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/XH7bhZDxqPrN