Journal of Energy, Mechanical, Material and Manufacturing Engineering
Journal of Energy, Mechanical, Material and Manufacturing Engineering Scientific (JEMMME) is a scientific journal in the area of renewable energy, mechanical engineering, advanced material, dan manufacturing engineering. We are committing to invite academicians and scientiests for sharing ideas, knowledges, and experiences in our online publishing for free of charge. It would be our pleasure to accept your manuscripts submission to our journal site.
Articles
186 Documents
<![CDATA[Surface Modification with Silane Coupling Agent on Tensile Properties of Natural Fiber Composite ]]>
<![CDATA[Willy Artha Wirawan]]>;
<![CDATA[Sofyan Arief Setyabudi]]>;
<![CDATA[Teguh Dwi Widodo]]>;
<![CDATA[Moch. Agus Choiron]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 2 No. 2 (2017) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v2i2.5053
<![CDATA[Biocomposite is an innovation of renewable material in engineering made from the bark fiber of waru (Hibiscus tiliaceus, the bark is environmentally friendly and has the potential to be developed. The purpose of this study is to modify biocomposite by adding methacryloxypropyltrimethoxysilane-coupling agent on waru bark fiber (Hibiscus tiliaceus) as an effort to improve tensile properties. Waru bast fibers, as reinforcement, were prepared by alkali procces using 6% NaOH solution for 120 minutes and then added 0.75% coupling agent and ordered using continous fibers with 0°/0°, 0°/90° and 45°/45° orientation. After that, the Biocomposites were formed with a polyester matrix using Vacuum Pressure Resin Infusion (VAPRI) method. The results of SEM tested showed the quality improvement of the bonds bringing significant impact on the tensile properties of the waru bark biocomposite. On the continous fiber 0°/90° orientated showed that the highest strength was 401.368 MPa, while biocomposites with 45°/45° orientation has lowest tensile strength of 65.243 MPa]]>
<![CDATA[Performance of Porous-Venturi Microbubble Generator for Aeration Process ]]>
<![CDATA[Lathifa Putri Afisna]]>;
<![CDATA[Wibawa Endra Juwana]]>;
<![CDATA[Indarto Indarto]]>;
<![CDATA[Deendarlianto Deendarlianto]]>;
<![CDATA[Fellando Martino Nugroho]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 2 No. 2 (2017) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v2i2.5054
<![CDATA[Qualified and preserved water is declining due to metal, waste, and hazardous chemicals contamination. Demand on fresh water raises and leads to the efforts on processing waste water with effective and efficient technology. Microbubble generator technology developed lately to result dissolved oxygen for raising microorganisms to decompose waste in waste water. This research used porous-ventury microbubble generator with 30° inlet angle and 20° outlet angle, placed in the center of 280 cm x 60 cm x 40 cm aquarium for experiment. This research aimed to find out bubble distribution and microbubble generator (MBG) performance. Measurement on bubble distribution conducted using Phantom Control Camera. Obtained data analyzed using MATLAB R2016a, while MBG performance measured using pressure transducer. Analysis conducted on variations of gas debit (0,1 lpm; 0,4 lpm., and 1 lpm) and water debit (30- 80 lpm) effects toward performance parameters, such as hydraulic power (Lw) and bubble generating efficiency (ηB). Results show that the greatest microbubbles’ diameter is 150- 500 μm, hydraulic power (Lw) increases with the inclining water debit (QL), effect of gas debit variation exert low effect towards Lw, and declining number of bubble generating efficiency (ηB) parameter with the inclining number of the water debit (QL).]]>
<![CDATA[The Influence of Origami and Rectangular Crash Box Variations on MPV Bumper with Offset Frontal Test Examination toward Deformability ]]>
<![CDATA[Imam Kusyairi]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 2 No. 2 (2017) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v2i2.5070
<![CDATA[Crash Box attached between bumper and chassis of a car serving as a kinetic energy absorber during the collision. In previous research, origami pattern crash box was tested at low speed, high speed, and frontal impact and oblique impact directions. They resulted predictable collapse and stable deformation patterns. It is directly proportional to the energy absorption during the impact. Origami pattern crash box was modeled in square but it cannot be used if it is applied in MPV car, the geometry is unsuitable to the bumper and chassis. Therefore, in this research, the crash box designed according to the size of bumper and chassis of MPV car where its shape is rectangular on the surface. This research will compare the deformation pattern between origami and rectangular crash box adapted to conditions and dimensions of the MPV car. Design built using CAD software and simulation is performed using FEM (Finite Element Method) software. Simulation test modeled with impactor, bumper and crash box, while offset frontal test with 16 km/h impact speed conducted using material bilinear isotropic hardening modeling. Result show that origami pattern crash box has predictable deformation pattern than rectangular pattern crash box.]]>
<![CDATA[Water Turbine Simulation using Autodesk Simulation CFD ]]>
<![CDATA[Suwarsono Suwarsono]]>;
<![CDATA[Budiono Budiono]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 2 No. 2 (2017) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v2i2.5111
<![CDATA[The need on electricity increases annually while its supply decreases, meanwhile power plant has not increased. Process of building microhydro power plant needs scientifically experience and more time to give suitable result as it designed. Sengkaling Cross-flow Microhydro power plant resulted inappropriate electricity power compare with designed power plant. The design is mostly not in accordance with planned calculation. It is caused by the engineer who is not considering surrounding condition. Therefore, simulation is very important to be conducted that it only needs short time to the design maximally arranged. By simulation, building and assembling process can be conducted faster and decreases error risks. Simulation for this research used AUTODESK SIMULATION CFD.]]>
<![CDATA[Design, Fabrication, and Testing of Prototype of Total Lumbar Disc Replacement ]]>
<![CDATA[Rela Adi Himarosa]]>;
<![CDATA[Suyitno Suyitno]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 1 (2018) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v3i1.5618
<![CDATA[Total Disc Replacement (TDR) implant is part of the prosthesis to treat degenerative disease by retaining the maneuverability of the disk itself. The TDR implant allows to repair the movement of the spines, absorbs the friction of intervertebral discs, and restore the height of the vertebrae. In this study, we constructed a new model of TDR implant, which is feasible to be mass-produced in Indonesia and performed static test to examine the mechanical properties of the new model. Before starting the prototype production, the finite element simulation is necessary. Simulation using Abaqus 6.14 software show that our design is safe from mechanical failure. The simulation test was performed using the static general model, non linear by considering the plasticity of UHMWPE material. Manufactured using CNC 3 Axis and the prototype was tested with ASTM 2077 standards, using two calibration model on horizontal position and tilted position of 27° to measure the compressive strength and shear strength respectively.]]>
<![CDATA[Effect of Mould and Melt Temperature on the Properties of Styrene Acrylonitrile Moulded Parts ]]>
<![CDATA[Cahyo Budiantoro]]>;
<![CDATA[Adi Nugroho]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 1 (2018) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v3i1.5711
<![CDATA[The quality of injection moulded parts can be influenced by processing parameters. The effect of mould temperature and melt temperature on the weight and shrinkage of Styrene Acrylonitrile moulded part was observed in this research. It was found that by increasing mold temperatures at constant melt temperature and injection speed, the weight of the part decreased and the shrinkage value slightly decreased. On the other hand, by increasing melt temperature at constant mold temperature and injection speed, the part weight increased. Both mold temperature and melt temperature gave only a small effect because the temperature difference was not too large.]]>
<![CDATA[The Effect of the Ball Size on the Product Characteristics of Shaker HEBM to Produce Nano Particle from Bamboo Charcoal ]]>
<![CDATA[Supriyono Sastrowiyono]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 1 (2018) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v3i1.5761
<![CDATA[The objective of this research is to study the effect of ball size on characteristics of product of shaker high energy ball milling (HEBM) to produce nano particle from bamboo charcoal. A new shaker mechanism is developed. The characteristics of the particle are represented by particle size, surface morphology, and the substances presence in the product. Particle size analyzer (PSA) is conducted to have the particle sizes, whereas SEM and EDX are used to have surface morphology and substances presence in the products respectively. The mixtures of 11 gr of bamboo charcoal powder of 200 meshes and about 299 gr of steel ball are placed in vials. The vial is from stainless steel cylinder with 1 inch diameter and 120 mm length. The stroke of the shaker is 54 mm at increasing speed of connecting rod pulley for every 1 million cycles. The total number of cycle is 3 million. Therefore, the connecting rod speed of the first 1 million cycles is 300 rpm, the second is 333 rpm, and the third is 367 rpm. The steel ball sizes are and inch. PSA results indicate that there is no certain correlation between the steel ball size and particle size. The final shape of the particles is determined by fracture mechanism. The highest substance presence in the result is carbon and followed by silicon.]]>
<![CDATA[Forces Perspective of Drillability of Titanium Alloy 6Al-2Sn-4Zr-6Mo ]]>
<![CDATA[Mahros Darsin]]>;
<![CDATA[Timotius Pasang]]>;
<![CDATA[Zhan Chen]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 1 (2018) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v3i1.5825
<![CDATA[This paper concerns on drillability of Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) from the point view of thrust force (Fz) & torque (Mz) using a TiAlN CVD coated carbide tool. The condition of the material was varied with three different heat treatments. Whereas, the machining parameters were varied in cutting speed, feed rate and cooling application method. Taguchi method L-18 was employed to design the experiments. Both type of forces, thrust force and torque, were measured using a Kistler dynamometer, and the data were analyzed using a Minitab 17 software. The thrust force was influenced by the cutting speed 24%, depth of drilling 21%, heat treatment 13%, and feed rate 11%. The torque was influenced predominantly by feed rate up to 94%. Coolant application has no effect on reducing both thrust force as well as torque.]]>
<![CDATA[Effect of Pipe Cutting Gap using CNC toward Surface Hardness ]]>
<![CDATA[A'rasy Fahruddin]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 2 (2018) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v3i2.5877
<![CDATA[This research concerned the standard value of surface roughness on Computer Numerical Control (CNC) to obtain fine pipe cutting result and is more useful for company to simply recognize the appropriate standard gap in designing. Standard design used is 30 mm with 3 specimen variations and variation gap value of 42 mm, 44 mm, and 46 mm. In recognizing fine refinement, standard on Roughness Average (RA) is used with surface roughness scale tool. Based on the experiment, it shows that gap design for pipe with Computer Numeric Control (CNC) in 30 mm has less optimum result because its cutting result still has crust, the gap is still considered too close. Therefore, re-grinding was conducted to result smoother result in achieving surface roughness value of 32RA. Fine pipe result without crust is 46 mm with roughness value of 4 RA. The smaller value obtained from measuring surface roughness, the more optimum result obtained.]]>
<![CDATA[Effect of Alkaline Metal Catalyst to Transesterification of Jatropha Curcas oil ]]>
<![CDATA[Dini Kurniawati]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 3 No. 1 (2018) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v3i1.5880
<![CDATA[Biodiesel is a renewable energy made of oil or fat. It is either vegetable or animal oil or fat. By using catalyst, both substances are processed by triglyceride modification to be methyl esters. This research concerned to find out the potency of alkaline (IIA) catalyst in processing biodiesel. This process initiated by testing oil free fatty acid to determine processing method. FFA value is very important in the beginning of process as it correlates to further reaction process. Temperature variation specified on 30o to 70o for 6 hours reaction. Result shows that the best methyl esters value used Mg(OH)2, Ca(OH)2 and Ba(OH)2 catalysts, respectively in 61,75%; 62,66% and 73,03% on 60oC reaction temperature.]]>
