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991	Mechanical Engineering	ABS-363
Component design of foldable helmet for motorcycle rider: strength analysis under static loading G C Denatra, G F H Basri, M A Anggoro, F Triawan* Department of Mechanical Engineering, Faculty of Engineering and Technology, Sampoerna University, Jakarta, Indonesia *farid.triawan[at]sampoernauniversity.ac.id Abstract A helmet is used to protect the head of motorcycle rider especially when an accident happens by absorbing the impact/crash load. In Indonesia, wearing a helmet when riding a motorcycle is obligated by the constitution. Hence, in line with the quick growth of online motorbike and taxi service, carrying a personal helmet has become a common need. Yet, it becomes troublesome to carry and store the helmet due to its big size. This paper introduces a primary design idea of a foldable helmet for motorcycle rider by fulfilling the safety standard of SNI (Indonesian National Standard). The proposed helmet uses hinge components that allow the folding mechanism. Strength analysis of the hinge-pin lock system is discussed in this paper. From the result, it was confirmed that the foldable helmet could withstand a loading requirement of 3000 N at the joint system (hinge) as required by SNI. The proposed folding mechanism can reduce a helmet volume up to 50% smaller than the non-foldable one. Furthermore, this study is expected to give contribution to the engineering product design. Keywords: Foldable Helmet; SNI; Static Loading; Hinge; Pin lock Share Link | Plain Format | Corresponding Author (Geraldy Cahya Denatra)

992	Mechanical Engineering	ABS-875
Armadillo modelled foldable motorcycle helmet: a preliminary design concept Nadhifatul Maulidati, Abdul Dwi Nur Cahyo, Khoirunnisa Irodatillah, Farid Triawan (*) Department of Mechanical Engineering, Faculty of Engineering and Technology, Sampoerna University, Jakarta, Indonesia *farid.triawan[at]sampoernauniversity.ac.id Abstract Safety is an important thing while riding a bicycle or motorcycle. Using a helmet is one of the solutions to increase safety of the rider, but sometimes people are too lazy to bring the helmet because of its big size. In the present work, a foldable helmet adopting the Armadillo concept was proposed to make people feel more comfortable in carrying the helmet. The design also follows the safety standard required by the SNI (Indonesia National Standard). A locking system for the folding mechanism is discussed, and a honeycomb foam for impact absorber is introduced. As a result, the proposed foldable helmet can have a reduction volume of 23.75% compared with the non-foldable one. Furthermore, this work is expected to contribute to the innovative engineering design. Keywords: Helmet, design, Foldable helmet Share Link | Plain Format | Corresponding Author (Nadhifatul Maulidati)

993	Mechanical Engineering	ABS-366
Design of Tank Cleaning Machine to Simplify the Process of Cleaning the Reservoir of Clean Water Husen Asbanu, Yefri Chan, Didik Sugiyanto Department of Mechanical Engineering, Faculty of Engineering, Darma Persada University of Jakarta Abstract Cleaning the water tank is necessary so that awareness of water health and the importance of clean water, the design of the tank cleaning mechanism is important to be realized so as to produce a good concept and bring benefits in tank cleanliness. These things underlie researchers to conduct research on designing the right mechanism for tank cleaning without worrying when doing manual cleaning, in response to the problems above, a tank cleaning system that is easy and convenient is needed so that it can clean the tank. The purpose of this research is to design an ergonomic water tank cleaning machine to improve the ability of humans to do work, so that some things around the natural environment such as equipment, physical environment, motion position need to be revised or redesigned with human capabilities and limitations. The method used in this study was a survey and engine design with a shaft drive of 4.5 cm in diameter and a length of 44 cm cleaning arm at the bottom of the tank, while a 130 cm tank cleaning wall arm was driven by a motor with Rpm 70. Parameters in the design of the tank cleaning machine including torque that is designed to weigh 20.76 kg.mm, the friction force on the bottom wall and the tank wall is designed to be 4.6 kg.mm with engine power of 382.08 watts at a voltage of 190 volts Keywords: mechanism, engine design, water tank cleaning Share Link | Plain Format | Corresponding Author (Husen Asbanu Asbanu)

994	Mechanical Engineering	ABS-1138
Simulation of Mixing Refrigerant R32 with R1270 instead of R410A to Reduce GWP in Wall Mounted Air Conditioning Widodo1, Berkah Fajar TK2, MSK Tony Suryo3, SH Winoto4 1Doctoral Study Program in Mechanical Engineering, Faculty of Engineering, Diponegoro University Jl. Prof Soedarto, SH Tembalang Semarang 50275 widodosaji71[at]gmail.com 2Doctoral Study Program in Mechanical Engineering, Faculty of Engineering, Diponegoro University berkahfajar[at]undip.ac.id 3Doctoral Study Program in Mechanical Engineering, Faculty of Engineering, Diponegoro University shwinoto[at]gmail.com 4Doctoral Study Program in Mechanical Engineering, Faculty of Engineering, Diponegoro University msktonysu[at]yahoo.co.id Abstract Refrigerant R410A is a cooling barrier which is still widely used for air conditioning. This R410A contains Fluoro element which can increase the value of GWP. In this research simulation we used an AC unit using R410A with the aim of reducing GWP by mixing synthetic refrigerant with hydrocarbons. R410A still have content GWP: Mixing using R32 / R1270 refrigerant is predicted to reduce the GWP value because R1270 is one of the hydrocarbon refrigerants that has a GWP value of only: 3. By using Refprop software it can be simulated a mixture composition starting from: 50/50, 40/60, 30/70, 20/80 and 10/90. From the results of the mixture simulation conducted, obtained a mixture approaching the characteristics of R410A, namely in the mixture: 20/80 with COP: 5.17 while R410A: 4.12. Compression ratio: R410A: 2.0 and for mixed refrigerants 20/80: 1.9. The refrigerant effect of mixed refrigerants is 20/80: 254,51, R410A: 162,77. Using this refrigerant mixture can reduce the GWP value and improve the performance of the AC cooling system. This refrigerant has considerable potential to replace the R410A. Keywords: Hydrocarbons, Synthetics, Atmosphere, Refrigerant, Refprop Share Link | Plain Format | Corresponding Author (widodo saji)

995	Mechanical Engineering	ABS-371
INVESTIGATION OF DRAFT TUBE PROFILES TO INCREASE THE EFFICIENCY OF BANKI TURBINE-BASED ON CFD SIMULATION Sirojuddin, Fadilah Chaerul Iman, Prima Chandra Utama, Darwin Rio Budi Syaka, and Imam Basori. Universitas Negeri Jakarta Abstract Increasing efficiency is very important in banki water turbine. One of the method to increase efficiency was modified the profile of draft tube so the kinetic energy of the turbine could be converted into pressure energy maximaly. The aim of this research was to investigate variations of draft tube profile from 5 variants. The geometry of the draft tube drwan in 2D and 3D software. From the 3D geometry was simulated in CFD software. Inlet mass flow was 0,0333 m3/s, head was 5,5 m. Based on the result of the simulation with CFD software Flow Simulation it was found that the best efficiency reach 88,4% and the flow trajectories at the first stage and the second stage blade of runner reaching the best flow trajectory and didn’t strike the shaft of the runner. Keywords: Keywords: blade flow, CFD simulation, efficiency, flow trajectory, variations of draft tube Share Link | Plain Format | Corresponding Author (Sirojuddin Sirojuddin)

996	Mechanical Engineering	ABS-373
Effect of thermomechanic on Thickness Wall Molds Hot Press Using Static Simulation : Small Plate Product-Rice Husk Composite A.Sifa*, F. Dionisius, A. Nurokhman Politeknik Negeri Indramayu Abstract Rice husk is waste from rice milling which can pollute the environment. Current pollution problems are also in the form of plastic raw materials, to minimize plastic waste as an alternative by utilizing rice husks that are easily available in all regions in Indonesia because Indonesian staple food rice is made as a composite material natural. Through the utilization of rice husk waste as a natural composite raw material by the hot press process, this study aims to make small plate product molds. In this study using a static simulation method using mechanical and thermomechanical load variations and thermal distribution simulation on Solidwork with mold dimensions of 200x200x50 mm using Stainless Steel with variations in wall thickness of molds 10mm, 15mm, 20mm and using variations of 1000N, 2000N, 3000N to test the strength of mold thickness parameters. The results of static and thermal simulations conducted concluded that the most perfect mold thickness for thermomechanics is 10mm because it has a maximum value than other thickness variations, while the results of thermal simulation not significant of temperature. Keywords: Hot Press, Mold Thickness, small plate. Share Link | Plain Format | Corresponding Author (Alif Nurokhman)

997	Mechanical Engineering	ABS-887
EFFECT OF ALUMINIZING ON THE TOUGHNESS OF LOW CARBON STEEL Dody Prayitno , Ammar Abyan Abdunnaafi Mechanical Engineering, Faculty of Industrial Technology, Universitas Trisakti, Jakarta, Indonesia Abstract The aim of research is to know affect an aluminizing process on the toughness of low carbon steel. The methodology research was started by cutting the low carbon steel plate according to ASTM E23 standart into 16 pieces charpy samples. Then samples were grouped into 4 groups. the first group were initial samples . The second group were non preheated samples before aluminizining process The third and the fourth group were preheated (at 700 oC for 30 minutes ) samples before aluminising process. The second, the third and the fourth group were the aluminized at 700 0C while the immersing time were variated (ie 5 minutes for the second and the third group but 10 minutes for the fourth group). Finally the all groups were an impact tested using the charpy methode. The results show that the aluminizing process increases the toughness of low carbon steel from 1.825 joule to 2.5 joule. The preheating process before aluminizing increased sharply the toughness of low carbon steel from 1.825 joule to 4.775 joule. The increasing immersing time from 5 minutes to 10 minute in aluminizing process does not effect the toughness of low carbon steel. Keywords: aluminizing process, low carbon steel plate, ASTM E23 standart Share Link | Plain Format | Corresponding Author (Rini Setiati)

998	Mechanical Engineering	ABS-640
INFLUENCE OF DURATION AND FUEL INJECTION PRESSURE ON TWO STROKE GASOLINE DIRECT INJECTION ENGINE PERFORMANCE Darwin R.B Syaka*), G. Margono, Adi Tri Tyasmadi, Tony Dewantoro Department Mechanical and Vocational Education State Universityof Jakarta, Gedung B Kampus Rawamangun Jl. Rawamangun Muka Jakarta, Indonesia, 13220 Abstract Deficiencies in 2-stroke gasoline engines that produce high air pollution, one of which is because there is some fuel when the rinse step is wasted directly through the exhaust. Solution to overcome the problem of pollution and improve engine performance is changing the fuel system into a direct injection fuel system. This study aims to determine the performance characteristics (power and torque) of two stroke gasoline direct injection engine in variations in injection duration and fuel pressure entering the combustion chamber with fixed injection timing 85o before TDC. The timing of fuel injection is carried out by a solenoid valve which is regulated using a disc board mounted on a crankshaft and detected by infrared sensors. Variations in the degree of duration of injection testing are 45o, 55o and 65o, in variations of fuel pressure of 6 bars, 7 bars and 8 bars The tools used for data collection are pressure gauge to measure fuel pressure and a tachometer is used to measure engine speed and engine torque measured by Prony brake. The results of this study indicate that increasing the duration and fuel pressure will increase power but do not directly affect the increase in torque, both of these cause therea is a certain duration and pressure which results in maximum performance. Keywords: gasoline engine, two stroke, direct injection, duration injection, injection pressure, performance. Share Link | Plain Format | Corresponding Author (darwin syaka)

999	Mechanical Engineering	ABS-896
Analysis of portable water tank dynamics stability due to water sloshing and the effect of divider plates configuration. Catur Setyawan Kusumohadi, Basuki Wibawa, Himawan Hadi Sutrisno, Triyono, Pratomo Setyadi, Jafar Amiruddin Universitas Negeri Jakarta Abstract Designed portable water tank was an auxiliary equipment that is pulled by firefighter motorcycle. These equipment is used to do fire suppression during fire disaster in densely populated area with narrow streets. The aim of the research was to determine the dynamics stability characteristics of designed water tank. Moving tank filled with fluids could be hard to handled due to fluid sloshing. Fluid sloshing will alter the cg position and cause internal force that disturb vehicle movement. Designed tank was installed with divider plate to minimize water surface movement. Variation of divider plate configuration was investigated to reach reasonable water surface movement that do not disturb the portable water tank dynamics stability. Tighter plates configuration will reduce water surface movement significantly. Keywords: portable water tank, sloshing, divider plate configuration Share Link | Plain Format | Corresponding Author (Catur Setyawan Kusumohadi)

1000	Mechanical Engineering	ABS-898
CONCEPTUAL DESIGN OF WAU BULAN UAV Catur Setyawan Kusumohadi, Shahnor Basri, Azmin S M Rafie Universitas Negeri Jakarta Universiti Putra Malaysia Abstract This paper presents conceptual design of an UAV that using “Wau Bulan” shape as its planform. Wau Bulan is a one type of Malaysia’s kite. Wau bulan kite has wing and tail part. Wau Bulan wing is a lens shape wing with aspect ratio 3.48. Tail part shape likes crescent moon. Tail part area is 46.23% of wing area. Wau Bulan UAV was designed to perform surveillance mission. Initial weight sizing and performance sizing was done to assure the reasonable value of aerodynamics and propulsion parameter. Joined wing and blended wing body technology concepts were used to aim the requirement parameters that defined during initial sizing process. The aerodynamics characteristic was analyzed using experimental method. Experimental results show that wau bulan planform aerodynamics characteristics fulfill designed parameter that chosen during initial sizing. Keywords: Wau Bulan planform, Mini Surveillance UAV, Aerodynamics characteristics Share Link | Plain Format | Corresponding Author (Catur Setyawan Kusumohadi)

1001	Mechanical Engineering	ABS-664
Multi Degree of Freedom Modular Conveyor using Omniwheel I. Budi S. Hadisujoto, Gerry F. H. Basri, Dwi S. Sinugroho, M. Jimly Azidiky, Farid Triawan Sampoerna University Abstract In today’s modern manufacturing industries, automation is indispensable to achieve higher production cycle efficiency, reduce time to market, and lower the cost. Automation in material handling implemented in conveyor system have advanced rapidly such that it is not only to move the materials but also to sort. In this report, a modular multi directional conveyor employing Omni Wheels are presented. The initial work was to simulate the conveying system using SolidWorks animation and MATLAB quiver function to estimate the box movements parameters. A prototype design was built as a proof of concept. Experiments were conducted to measure the accuracy and precision. Technique to improve the accuracy is discussed. Keywords: Conveyor, Omniwheel Share Link | Plain Format | Corresponding Author (Ignatius Budi Sutanto Hadisujoto)

1002	Mechanical Engineering	ABS-153
Dehydrogenation of ammonia for electricity production: Effect of recirculation fraction Firman Bagja Juangsa a), Prihadi Setyo Darmanto a), Muhammad Aziz b) a) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung Jl. Ganesha 10, Bandung, 40132 Indonesia b) Institute of Industrial Science, The University of Tokyo 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan Abstract Hydrogen (H2) has been widely studied as a promising energy carrier. However, the storage and transportation of H2 are challenging yet critical technology for H2 energy system implementation. This work proposes an integrated system of energy utilization of NH3, which has been known as one of the promising methods of H2 storage. The integrated system consists of NH3 decomposition by the thermo-catalytic process and power generation process from H2. The heat generated from oxy-fuel combustion of H2 is utilized to supply the thermal energy required for the endothermic process of NH3 decomposition, and the remaining heat is converted to electricity by a combined cycle. A portion of exhaust gas is recirculated to the combustion chamber and the heat circulation of the system is designed and optimized based on enhanced process integration (EPI), resulting in a highly efficient system. The result shows an optimum configuration of the integrated system with a recirculation fraction of 0.5-0.55, which is resulting in high system efficiency of 51.4%. The proposed work demonstrated an integrated system of H2-based energy utilization of NH3 with CO2-free, while maintaining a highly efficient system. Keywords: ammonia decomposition, CO2-free, hydrogen, energy efficiency, power generation Share Link | Plain Format | Corresponding Author (Firman Bagja Juangsa)

1003	Mechanical Engineering	ABS-161
Alkaline hydrolysis of starch and lignocellulose waste from durian seed in bioethanol production H C Theofany, M. Yheni, Y. Mulyaningsih, A D Pramiesta, H B Aditiya Sampoerna University Abstract Global carbon emission in this past decade have significantly increased because of the development of Industrialisation. To reduce the carbon emission in atmosphere, second generation bioethanol production is favoured as a green, alternative energy for internal combustion engine. In this project, durian seeds are chosen to be the promising potential feedstock due to its abundance, especially in tropical country, such as Indonesia. To obtain the starch and lignocellulose waste, durian seeds were heated at 120 ℃ for 7 hours to remove the moisture content. The dried durian seeds were then grinded with the minimum size of 1 mm. Ratio between durian seeds starch and lignocellulose is selected to observe the characteristics in producing fermentable sugar with a fixed alkaline concentration of 1 Molar. Hydrolysis temperature on the 5 minutes duration of ultrasonic treatment was also chosen to be the variable of experiment to obtain the most promising reducing sugar result. Samples were assayed for the reducing sugar content through DNS method. Once it has done, the theoretical ethanol could be determined. Thus, the bioethanol from the durian seeds are produced to degrade the dependency of fossil fuel energy consumption. Keywords: Bioethanol, Energy, Durian Seeds Share Link | Plain Format | Corresponding Author (Theofany Harley Chriswardana)

1004	Mechanical Engineering	ABS-426
Preliminary Study of Nutmeg Shell in Second Generation Bioethanol Production via Mechano-Alkalic Treatment Y. Mulyaningsih, M. Yheni, H.C Theofany, A.D Pramiesta, H.B. Aditiya Department of Mechanical Engineering, Faculty of Engineering and Technology, Sampoerna University, Jl. Raya Pasar Minggu No.Kav. 16, Jakarta Selatan, 12780, Indonesia Abstract The ever-increasing environmental problems and depletion of fossil fuel holdings are prominently alarming. Through the past years, bioethanol has been consistently becoming notable option as future energy alternative. In second generation production, lignocellulosic waste and starchy materials from non-edible, agricultural waste, are considered to be convertible to sugar; this enacts nutmeg (Myristica fragran) appealing to take advantage of, especially for a leading producer country such as Indonesia. This paper aims to study the ability of nutmeg shell in producing simple reducing sugar through the combination of mechanical and chemical process, i.e., ultrasonication assisted alkaline hydrolysis. The success of this study sheds light as a reference as well as to promote further observation of new feedstock which can be potentially utilized for second generation bioethanol production. Keywords: bioethanol; second generation; nutmeg shell; ultrasonication; alkaline; hydrolysis Share Link | Plain Format | Corresponding Author (Yhana Mulyaningsih)

1005	Mechanical Engineering	ABS-688
Development of Low-Cost 3D Scanner Kushendarsyah Saptaji, Muhammad Faizul Bin Husni, Ahmad Fakhri Bin Abul Nasir Sampoerna University Indonesia Universiti Malaysia Pahang, Malaysia Abstract The application of 3D scanner technology among industrial practitioner in Indonesia and Malaysia is still at the beginning stage. In contrast, this technology has been adapted mostly by growing countries such as China, Korea, US and Germany. The 3D scanner technology is mainly implemented in manufacturing, aerospace and medical industries to improve the reverse engineering process. Due to the high cost of 3D scanner available in the market, a cost-effective 3D scanner is needed to be developed. Therefore, the objective of this project is to develop a low-cost 3D scanning setup by using open-sources software to create a mesh of a small-scale object for 3D scanning and 3D mesh processing. In this project, triangulation technique was applied to capture the object surface. Screened Poisson Surface Reconstruction techniques was utilized to improve the uncomplete and uneven surface mesh. In order to test the setup, 3D scanning was conducted on 4 different objects with different colours and surface finish. The scanning results using the proposed method produced a good 3D mesh with less noise and less uncomplete surface. It is observed that colour differences affect the mesh result. In addition, the technique also able to reduce the measurement error in the mesh. Keywords: 3D scanning, open sources, triangulation technique, screened poisson surface reconstruction Share Link | Plain Format | Corresponding Author (Kushendarsyah Saptaji)

1006	Mechanical Engineering	ABS-439
STRESS DISTRIBUTION ANALYSIS FOR MATERIAL AND DESIGN OPTIMIZATION OF WIND TURBINE BLADE 500 W faris aditama, mujammil asdiyoga, bernadet oka PLN Puslitbang Abstract To find out the performance and reliability of wind turbine blades, it is necessary to do prototype testing of wind turbine rotor blade aerofoil in wind tunnel. However, there are concern of damage to the prototype because the power of the aerofoil material is not yet known to withstand the maximum load arising from the velocity of the air flow. Therefore, to determine the maximum limit of air velocity, it is necessary to do a non-destructive study with a fluid dynamics simulation method based on Computational Fluid Dynamics (CFD). The simulation is focused on the blades of the wind turbine which are subjected to air flow (wind) with varying speeds. In this study numerical simulations of fluid dynamics is run around the turbine blades to obtain data on the distribution of forces and moments acting on the turbine blades at various prices of wind speed. The results of the study resulted the value of the lift coefficient and the drag coefficient is relatively constant at all variations of speed. Large drag and lift forces on the blades increase with increasing wind speed. Likewise the deflection moment increases with increasing wind speed. Drag force on the bar is greater than the lift force which means the deflection moment due to drag force is greater than the deflection moment due to the lift force. Pressure coefficient values vary along the blade with the maximum value in front of the blade surface and the minimum value behind the blade surface Keywords: wind turbine blade Share Link | Plain Format | Corresponding Author (faris aditama)

1007	Mechanical Engineering	ABS-441
Optimum Parameters of Organic Rankine Cycle (ORC) Power Plant Using Coconut Shell as Fuel Harmiansyah (a*), Edy Hartulistiyoso (b), Slamet Widodo (c), Lilik Pujantoro E. N (d) a) Mechanical Engineering and Biosystems Department of IPB University, Dramaga-Bogor 16680, Indonesia *harmibm[at]gmail.com Abstract The scarcity of energy sources is now an important issue. Increasing the number of the population makes energy needs higher. The use of renewable energy as an alternative is a good solution. Organic Rankine Cycle (ORC) is a Rankine cycle that can work at low temperatures and pressures. The working fluid in ORC is an organic fluid such as R-134a refrigerant because it has a lower boiling point than water and has a low environmental impact. In this study, work simulations were performed using software tempo cycles to analyze the performance of the Organic Rankine Cycle (ORC) system using coconut shells to obtain optimum parameter variations based on thermal efficiency values. The simulated data consists of 12 variations of fuel rate parameters and mass flowrate. Based on the simulation results, 2.5 kg 2 GPM variation is obtained as the optimum parameter variation with a thermal efficiency value of 6.17%. Keywords: ORC, R-134a, optimum, simulation. coconut shells Share Link | Plain Format | Corresponding Author (Harmiansyah Harmiansyah)

1008	Mechanical Engineering	ABS-955
Optimization of Cooling System for an Electric Vehicle Battery Pack Evelyn (a*), Abd. Rashid bin Abd. Aziz (a), Bentang Arief Budiman (b), Poetro Lebdo Sambegoro (b) a) Centre for Automotive Research & Electric Mobility (CAREM), Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia *eve_lyn_lim[at]yahoo.com b) Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia Abstract As one of the main components of electric vehicle, it is crucial to ensure the battery pack is designed with the optimum configuration. One of the highest risk yet commonly found issue in battery is overheating. Not only will its own life span be compromised, overheating might also be a potential fire hazard to the whole vehicle. Therefore, this research aims to provide a reliable solution to maintain the battery pack temperature within the acceptable range. The method proposed is by introducing forced convection through installation of multiple fans. CFD simulation is conducted using ANSYS fluent to evaluate the ideal placement of the fans and the required flow rate. The model used is a battery pack consisted of 240 cells currently under development for usage in an electric bus. Hence, design of the cooling mechanism is made with all the components of the battery pack under consideration. Through this research, a suitable fan model is selected based on the preferred dimensions and specification. Keywords: electric vehicle; battery pack; CFD; temperature distribution Share Link | Plain Format | Corresponding Author (Evelyn -)

1009	Mechanical Engineering	ABS-967
The effect of layer orientation angle and its increasing on mechanical properties of laminated material: a numerical study A Premono (a*), KMP Adyaksa (a), R Sukarno(a) a) Teknik Mesin, Fakultas Teknik, Universitas Negeri Jakarta Jl. Rawamangun Muka, Jakarta, 13220, Indonesia *agung-premono[at]unj.ac.id Abstract The mechanical properties of a laminated material due to different layer orientation angle and pattern of layers are simulated using the finite element method. This paper aims to determine the effect of the different layer orientation angles and patterns on the mechanical properties of laminated material. Stainless steel laminated with epoxy carbon is used in this study. The model is a rectangle plate with 150 mm in length, 80 mm in width, and 4 mm in thickness. Linear static finite element analyses with 0,63 MPa normal force is applied to the three various models with different layer orientation angles and patterns. The results show that different layer orientation angles and numbers affect the mechanical properties of the material Keywords: composite material; fiber orientation angle; number of layers; mechanical properties; finite element method Share Link | Plain Format | Corresponding Author (Agung Premono)

1010	Mechanical Engineering	ABS-712
Design of Waste Water Treatment Plant (WWTP) in Mini Incinerators Aam Amaningsih Jumhur, Eko Arif Syaefudin, Ratu Amilia Avianti Universitas Negeri Jakarta Abstract Waste accumulation in the Final Waste Disposal Site (TPAS) needs to be reduced by trying to reduce the volume of waste sent to TPAS. Incineration is a solution to reduce the size of waste from the source, but in the process of combustion of waste, it has an adverse impact in the form of air pollution. The purpose of this study is to treat wastewater by using a filter on a mini incinerator. Mini incinerators are designed for residential environments to reduce the volume of house waste. The design method used is the design method VDI 2221. The results of the study are (1) Design of a wastewater treatment plant (WWTP) on a mini incinerator by selecting the 4th variation on the grounds that the test results show that the 4th variation is the most optimal, (2) The results of the combustion wastewater test results on the incinerator, there are 3 items still above. Keywords: mini incinerator, VDI 2221, WWTP, liquid waste, a filtration process Share Link | Plain Format | Corresponding Author (Aam Amaningsih Jumhur)

1011	Mechanical Engineering	ABS-980
Reverse Engineering Method to Build Automatic Flouring Gauge Machine Agung Prijo Budijono, Syeihan Syahrul Syah, Wahyu Dwi Kurniawan, Bidya Nur Habib State university of surabaya Abstract Reverse engineering in development product is the process to re-measure existing peoduct to gain information on it, then redesign the CAD model. It represent geometric shapes and other information of the original one’s and used for analyzing, recovery, production, and testing. The model that is created using reverse engineering are for various reasons including to design tool for the production of a copy of an object, to study the concept of an existing design, or to analyze the design for improvement. In this research, it will be re-modeling the automatic flour gauge machine after reviewing the working principle of the machine. The components that will be analyzed and redesigned are : 1) Hooper design for repairing and cleaning operations, 2) Auger design to overcome the fall of flour droplets from the output hole, 3) The design of the Steering Agitator to overcome the nature of the flour adhering to the wall and maintain the flowrate of the flour. The method used were : 1) Determination of Reverse Engineering Components, 2) Identification of Components, 3) Three (3) Dimensional - Component Design. The result showed after the modification of flour in the tube was denser so that it would increase the precision in the filling process, this was because the flowrate became more stable Keywords: Reverse Engineering, CAD, Flour, Automatic Share Link | Plain Format | Corresponding Author (Agung Prijo Budijono)

1012	Mechanical Engineering	ABS-474
COMPARISON OF PARALLEL EVAPORATOR DISTRIBUTION MODELS IN ICE CREAM ROLLING MACHINES Wardika (1), Fauzun (2), Sunanto (3) (1), (3) Refrigeration Engineering, Indramayu State Polytechnic (2) Department of Mechanical Engineering, Gadja Mada University Abstract This research was conducted to determine the effect of performance on the use of the parallel distribution evaporator on ice cream roll machine. This research was made using 3 variations of parallel distribution evaporator model, where each model has a different shape. Model 1 has 3 inputs and 3 outputs, Model 2 has 2 inputs and 2 outputs and Model 3 has 1 inputs and 1 output. Evaporator is made with a size of 45 cm x 40 cm x 4 cm from stainless steel thickness 0.3 mm, so that most of the products produce crystallization then it needs to be set points at a temperature of -180C. the effect of the superheat process, where the smaller the superheat that occurs, the temperature in the evaporator can be more stable. Based on the results of the testing that has been done, the COP systems work performance is 4.3, 3.6, and 3.4 for each evaporator model. Efficiencies generated respectively for the evaporator model of 86%, 78% and 76%. Keywords: Evaporator, Performance and superheat Share Link | Plain Format | Corresponding Author (Wardika wardika)

1013	Mechanical Engineering	ABS-485
Wireless Measuring Development to Crankshaft Deflection Identification for Diesel Powerplant Eko Supriyanto (a), Ariyana Dwiputra (a), Susilo Adi Widyanto (b) (a) PT PLN (Persero) Puslitbang Ketenagalistrikan Jl Durentigan No 102 Jakarta Selatan 12760 (b) Mechanical Engineering Department of Diponegoro University Jl Prof Soedarto Tembalang Semarang 50275 Abstract Crankshaft is a vital component in the construction of an internal combustion engine. Over time, the crankshaft can be deflected, thereby reducing engine performance or even causing catastrophic damage. This paper describes the development of a crankshaft deflection measuring instrument in which measurements need not be removed from the engine system. Because of its ease of operation, the crankshaft deflection measurement procedure can be adopted into the Preventive Maintenance system in an effort to increase the reliability of the generating system. The design of the crankshaft deflection measuring instrument is carried out using a digital dial indicator as the main measurement tool. With the development of wireless data communication methods, measurement accuracy can be obtained. From the test results obtained that the resolution of the measuring instrument is 0.01 mm and the maximum deviation of the calibration results is 0.03 mm. Keywords: Diesel Powerplant; Crankshaft Deflection; Wireless Measurement Share Link | Plain Format | Corresponding Author (Eko Supriyanto)

1014	Mechanical Engineering	ABS-753
Knowledge Level of Blind Persons about Fire Hazards in School Building Pratomo Setyadi1 Bedjo Sudjanto2 Catur Setyawan Kusumohadi3 Himawan Hadisutrisno4 Marja5 Rudi Prianto6 Fire Safety Engineering, Jakarta State University Jalan Rawamangun Muka, Jakarta, 13220. 08119791981 Abstract This study aims to determine how the behavior of the blind to the danger of fire in buildings. This research uses descriptive quantitative research methods. The sample used in this study were taken by purposive sampling technique. The research was conducted in PSBN Tan Miyat, East Bekasi with a subject that is blind study with a sample size is 50 person. Data collection using a questionnaire to determine the behavior of any visual impairment arising in the event of fire in school buildings. Results from this study showed that the actions, knowledge and visually impaired how to identify fire hazards in school building are good, while the awareness of blind people against fire in buildings otherwise unfavorable. Keywords: Blind, Visual Impaired, Fire Hazard, School, Building Share Link | Plain Format | Corresponding Author (Pratomo Setyadi)

1015	Mechanical Engineering	ABS-754
The Identification of Potential Fires in Oil Mining Area on Minas Sumatera Opeartions - Indonesia by Manual Assessment Method. Himawan Hadi Sutrisno, Basuki Wibawa, Triyono, Jafar Amiruddin, Catur Setiawan Kusumohadi, Pratomo Setyadi, Nugroho Gama Yoga Universitas Negeri Jakarta Abstract The petroleum industry both mining and crude oil processing has a high level of fire risk. This can be caused by the hydrocarbons from the content of mining products, crude oil content to the fuel which is contained in the area around processing. Where, if there is a fire in the surround area can cause a terrible explosion in the oil tank or pool fire. To identify the potential fires, a manual assessment method can be carried out by: making clusters and grouping of production activities, cause-effect diagrams of industrial activities, field observations, identification of hazard materials, analyzes and actions in accordance with the standard operating procedures applied in the company. From the results of observations on the oil and gas industry in Sumatra – Operation Indonesia, generally the identification of potential fires is good, there are several factors that must be taken so the zero accidents in the oil industry can be fully satisfied. Keywords: manual assesment, fire safety, oil and gas Share Link | Plain Format | Corresponding Author (Himawan Hadi Sutrisno)

1016	Mechanical Engineering	ABS-756
Construction of Vibration Monitoring System Based on Wireless Sensor Network (WSN) for Machining Process Fijai Naja Azmi, Kushendarsyah Saptaji, Muhamad Rausyan Fikri Sampoerna University, Faculty of Engineering and Technology Abstract At present, the wired vibration sensor monitoring system for rotating machinery has been successfully implemented in the modern industry. Regardless of its advantages such as real-time transmission and the fast response, the complex configuration can cause a problem such as tucked cables and higher cost as it is employed in large equipment. Therefore, in this current study, the vibration monitoring system based on Wireless Sensor Network (WSN) is developed. The new monitoring system proposed in this study involves the utilization of the Xbee module, Raspberry Pi, Arduino UNO, and Grove vibration sensor. Three parameters which are the indoor range, cost optimization, and the capability to connect to the internet are the main considerations to build the system. In order to validate the proposed vibration monitoring system based on WSN, milling experiment was conducted. From the vibration sensor being installed in the milling machine, it can be observed that the system is adequate to accomplish vibration data through wireless connection with the distance about 3 meters. By real time investigation of the vibration data, the system able to recognize any error in the milling process. Therefore, the system capable to prevent failure in the machining process specifically in the milling process. Keywords: Vibration Sensor; Wireless Sensor Network; Milling Process Share Link | Plain Format | Corresponding Author (Fijai Naja Azmi)

1017	Mechanical Engineering	ABS-245
Automated Irrigation System in Sustainable Precision Agriculture: A Review Paper Nisa Khoiriyah (a*), Asriyanti (a), Given Chris Yuenan (a), Muhamad Rausyan Fikri (a) a) Faculty of Engineering and Technology, Sampoerna University, Jl. Raya Pasar Minggu No.Kav. 16, Pancoran, Kec. Pancoran, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12780 *nisa.khoiriyah[at]my.sampoernauniversity.ac.id Abstract Indonesia is a country mainly the economic development is supported from the agricultural sector. Therefore, maintaining the sustainability of the land and managing the water storage during drought is important. The use of technology has been used over a decade such as to improving the efficiency of the irrigation system. The automated irrigation system is used for collecting, controlling, and predicting the data based on the water, soil, and crop relationship. Various methods have been proposed for made the system to be efficient and able to control the crop properly. Multiple sensors are used to collect data and then being controlled by the micro controller. In an effort to utilize the water storage effectively and maintain the sustainability of agriculture, this paper reviews current research of irrigation system, the enabling technology used, the method of collecting data, and investigates the effectiveness of the irrigation system. The aim of this paper is to provide a summary of the current state of the irrigation system in a decade. Keywords: Irrigation system; Precision agriculture; Multiple sensors Share Link | Plain Format | Corresponding Author (Nisa Khoiriyah)

1018	Mechanical Engineering	ABS-502
Fire Ignition of NYM Cable Shield Vapor on Excessive Electric Current in Multi Core Cables Pratomo Setyadi1 Catur Setiawan Kusumohadi2 Triyono3 Nugroho Gama Yoga4 Himawan Hadi Sutrisno5 Fire Safety Engineering, State University of Jakarta Jalan Rawamangun Muka, Jakarta, 13220. Abstract People often use electrical appliances exceeds the technical specifications, but if done technically prevention of the manufacture of the cable to prevent the occurrence of fire, the fire risk will be minimized. Under the rules of SNI, heated wires or fed by the overcurrent, to be able to not burn. However, in some ocassions, electrical wires burned and turned into a heat source for fires. NYM cable flame characteristics in the event of overload currents, laminar diffusion flame occurs, the process of liquefaction, pyrolysis, diffusion, and combustion clearly seen. NYM cable flame propagation patterns in the incidence of overload start happening at that point reaches ignition temperature, which occurs due to an electric wire heat reaching the melting temperature of copper. Flame propagates in all directions where their fume and oxygen along the cable and around the cable. In certain circumstances, occur splash / explosion of the fuel to evaporate. Keywords: pvc, fuel, vapour, temperature,spark, flame Share Link | Plain Format | Corresponding Author (Pratomo Setyadi)

1019	Mechanical Engineering	ABS-248
Effect of Pitch Angle to Shear Stresses on The Runner Blade Surface Using Computational Fluid Dynamics (CFD) Pribadyo, P (a,c*), Hadiyanto, H(a), and Jamari, J(b) a) Doctoral Program of Environmental Science, School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia * dyo_1806[at]yahoo.co.id, b) Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia c) Faculty of Engineering, Teuku Umar University, Meulaboh, 23615, Indonesia Abstract The main aspect of each hydroelectric power station for a low head is a turbine that is capable of producing electricity with maximum power through the shaft rotation. Because turbine blades are the main component of propeller turbines that are directly connected to the shaft and connected with generators, for that we need special attention that must be understood in the design of turbine blades so that performance becomes more optimal. Propeller turbine performance can be improved by changing the turbine design parameters. One method developed is to vary the blade angle on the runner blades. Analysis of the influence of the blade on propeller turbine performance is done through numerical simulations based on Computational Fluid Dynamics. Simulations are carried out with a variation of propeller turbine blade angle of 25 degrees, 30 degrees, and 35 degrees at flow rates between 0.08 to 0.5 m/s. Simulation results show shear stress distribution that occurs in the blade tends to always increase with an increase that is not linear. Blade angle of 30 degrees at maximum flow rates have the best performance compared to turbine blades 25 degrees and 35 degrees. These conditions indicate that the magnitude of the angle does not significantly affect the shear stress that occurs. Keywords: Pitch angle, shear stresses, runner blade, simulation, CFD Share Link | Plain Format | Corresponding Author (Pribadyo Pribadyo)

1020	Mechanical Engineering	ABS-1019
The Influent of Mixing Premium, Pertalite, Pertamax and Pertamax Turbo Fuel on Performance and Emissions of Gasoline Motors Ali Akbar, Rachmat Firdaus, Mulyadi Universitas Muhammadiyah Sidoarjo, Indonesia Abstract The use of fossil fuels is still dominant for internal combustion engines, especially for gasoline motors. The most commonly used fuels are premium, pertalite, Pertamax and Pertamax turbo. What distinguishes this type of fuel is the octane value contained therein and each different octane content will affect the selling price of the fuel. To use fuel efficiently with good octane values, it is necessary to mix this fuel. By using a statistical method for mixing these fuels, a percentage of each fuel is determined, which is 25 percent to 75 percent for each fuel. Then from that percentage the octane value of each mixture is measured. Then each composition was tested on a 4 stroke gasoline motor, and the results evaluated were Power, Torque, Sfc and exhaust emissions. The results of this study are, at a mixture of 70 percent Premium and Pertamax Turbo 30 percent produces an optimal octane value, the price is very cheap, the power can be optimal and the emissions released are very environmentally friendly. Keywords: Fuel, Specific Fuel Consumtion, Torque, Emission Share Link | Plain Format | Corresponding Author (Ali Akbar)

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