Claim Missing Document
Check
Articles

Found 36 Documents
Search

PENGARUH HOLDING TIME DAN MOLD TEMPERATURE TERHADAP CACAT WARPAGE PADA PROSES KOMPOSIT AL-PP DENGAN INJECTION MOLDING khoirul fahmi aziz; Aris Zainul Muttaqin; Intan Hardiatama; Hari Arbiantara; Sumarji .; Dwi Djumhariyanto
STATOR: Jurnal Ilmiah Teknik Mesin Vol 5 No 2 (2022): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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

Abstract

Success in the injection molding process is seen from the results of products that do not produce defects. Warpage defects are one of the defects resulting from the injection molding process. One way to measure warpage defects is to use the ImageJ application. The data processing stage in this study uses the Taguchi method statistical method with two independent variables namely holding time and mold temperature, each of which has three factors and repeated data three times, which aims to obtain more accurate values. The results showed a very influential variable is the holding time parameter then the mold temperature parameter. The higher the level of holding time parameters, the smaller the result of warpage defects. Unlike the holding time parameters, the best mold temperature parameters at the middle level, the result will be a small warpage defect produced. The experimental results of the highest level value on the holding time parameter are 15 seconds while in the mold temperature the value of the middle level is 50 ° C which produces a defect of 1%. While the lowest holding time parameter value is 5 seconds and the highest mold temperature level parameter value of 70 ° C is the worst variation of parameters because it produces a defect of 22%.
Effect of layer height, infill geometry, nozzle temperature, and fan speed on tensile strength of 3D printing PETG specimens Mahatma Junjung Mardlotila; Muhammad Trifiananto; Dedi Dwilaksana; Hari Arbiantara Basuki; Muh Nurkoyim Kustanto; Intan Hardiatama
invotek Vol 22 No 3 (2022): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v22i3.1045

Abstract

This research is aimed to provide insight on the dependency of tensile strength on process parameters of the Fused Deposition Modeling (FDM). FDM is one of the most popular 3D printing manufacturing techniques. In the present study, a tensile test was performed to measure the tensile strength of PETG (Polyethylene terephthalate glycol) specimen with the combination of different layer height, infill geometry, nozzle temperature, and fan speed whereas other parameters are kept at a constant level. This study uses the ISO 527 1BA standard. Taguchi L16 (44) with 4 levels for each factor was used to determine the effect of each parameter. Each experiment repeated 3 times to minimize the occurrence of errors. layer height, infill geometry, nozzle temperature, and fan speed ​​respectively effect of 13.4%, 63.6%, 19.0%, and 2.7%. Fan speed is considered a parameter that has no impact on tensile strength. The layer height and nozzle temperature parameter shows that the higher the value, the tensile strength of specimens tend to increase. Furthermore, infill geometry from the one with the highest to the lowest tensile strength value is gyroid, zig-zag, grid, and triangles. The combination of layer height of 0.24 mm, infill geometry gyroid, and nozzle temperature of 250 ˚C is the optimum combination of parameters which has the highest tensile strength of 34.76 N/mm2.
PENGARUH PARAMETER WIRE CUT EDM TERHADAP LAJU PEMBUANGAN MATERIAL DAN KEAUSAN KAWAT M Fahrur Rozy Hentihu; Dhimas Ilhamsyah; Franciscus Xaverius Kristianta; Ahmad Adib Rosyadi; Hari Arbiantara Basuki
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 1 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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

Abstract

To improve the performance of the WEDM process, it is necessary to adjust the WEDM parameter settings to optimize the material removal rate (MRR) by decreasing the electrode wire wear (TWR) value. Using SKD 61 steel as the material, the impact of peak current, voltage open, and wire tension on material removal rate and tool wear ratio is used to estimate the ideal level parameters. The study's findings should be able to offer suitable parameter settings for WEDM work. Peak current (Ip) of 63.7%, wire tension of 31.4%, and open voltage of up to 1.9% are the machining parameters that impact the material removal rate (MRR) in the wire cut electrical discharge machine process sequentially. Open voltage, which contributes 54.4%, the wire tension parameter, which contributes 36.5%, and the peak current (Ip) parameter, which contributes 7.8%, are the machining parameters that have the most significant cumulative influence on the tool wear ratio (TWR). Peak current parameter at level 3 (9A), open voltage parameter at level 1 (5V), and wire tension parameter at level 2 (8N) are the ideal settings for MRR and TWR, resulting in MRR values of 9.861 mm3/min and TWR as high as 0.078. The study's findings usually show that higher wire tension and peak currents enhance material removal rates because the jumps of sparks produce tremendous energy. In contrast to how to open voltage and wire tension affect the wear value of the wire, thicker wires erode more quickly because more tremendous energy is generated, necessitating ideal conditions for both responses. The results of the optimization of the two responses are produced by raising the maximum peak current, lowering the minimum open voltage, and figuring out the ideal wire tension. Keywords: Wire Cut Electrical Discharge Machine, Material Removal Rate, Tool Wear Ratio.
Introduction to Chopper Machines as a Supporter of Increasing Production and Quality of Livestock Feed in Jember Jelbuk Village Dwi Djumhariyanto; Mahros Darsin; Hari Arbiantara Basuki; Robertoes Koekoeh Koentjoro Wibowo
Jurma : Jurnal Program Mahasiswa Kreatif Vol 7 No 1 (2023): Juni 2023
Publisher : LPPM UIKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/jurma.v7i1.1775

Abstract

Silage is animal feed fermented to add nutrition and increase feed availability, especially during the dry season. The feed fermentation process is faster if the feed has been chopped before. This service aims to introduce choppers to Jelbuk Village, Jember Regency farmers. The service begins by discussing the problems faced by farmers/breeders, chaired by Mr. Mahfudz. They wanted a portable mini chopper to move and operate this machine at each member's residence. The chopper is modified from the previous multi-function chopper machine, which can chop leaves and twigs and crush animal manure for compost raw materials. Socialization of this machine is carried out simultaneously with training in making silage. After demonstrating the machine's operation and maintenance, the service partners were enthusiastic and rushed to try this new counter at their homes. They hope coaching activities can be continued later with the technologies they need.
Mechanical properties of FDM 3D printed component using self-made PLA-titanium filament: hardness perspective Mahros Darsin; Faris Ahmad Junaedi; Agus Triono; Yuni Hermawan; Intan Hardiatama; R. Koekoeh Koenjtoro Wibowo; Hari Arbiantara Basuki
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4118

Abstract

3D printing, also known as additive layer manufacturing, is a technique that creates three-dimensional objects or any shape from a digital model. It works by building objects layer-by-layer, similar to how a laser printer operates. Fused Deposition Modeling (FDM) is a widely used technique in 3D printing because it is easy to use, cost-effective in production, and environmentally friendly. This study focuses on a self-made filament made of a PLA-titanium mixture. PLA is a biodegradable thermoplastic polymer sourced from plants, whereas titanium is a strong, lightweight, and corrosion-resistant metal. To measure the hardness of different materials, there are several methods available. In this study, the Shore D hardness test, specifically designed for polymer materials, was used. Data were collected using the Taguchi method, specifically L4 (23), and the data were analysedusingAnalysis of Variance (ANOVA). The variations in print parameters examined in this study include nozzle temperature (230°C and 240°C), layer height (0.2 mm and 0.3 mm), and print speed (30 mm/s and 40 mm/s). The aim of this study was to determine whether there were any changes in the hardness of the specimens. The ANOVA results revealed that the most influential parameter was print speed, with a contribution value of 56.01%. The results demonstrated that the printing parameters affected the hardness of the printed specimens. The highest hardness level of 56.3 Shore D was obtained with a nozzle temperature of 240°C, a layer height of 0.3 mm, and a print speed of 30 mm/s. The application of this study was demonstrated through the creation of dentures made from PLA-titanium.
OPTIMASI PARAMETER PEMESINAN BUBUT DENGAN VARIASI MEDIA PENDINGIN DAN KECEPATAN SPINDEL TERHADAP KEKASARAN PERMUKAAN BAJA AISI 1045 Pratama, Aly Wafa; Djumhariyanto, Dwi; Trifiananto, Muhammad; Yudistiro, Danang; Arbiantara, Hari; Ilminafik, Nasrul
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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

Abstract

The machining process is a process used in the manufacturing industry, the machining process itself has become an important part of the manufacturing industry since the industrial revolution era. In the machining process that is widely used to produce cylindrical products, namely the lathe process. One of the main factors of the quality of processed materials is surface roughness. MQL is a method of providing coolant in the industry which has the function of lowering temperature and reducing friction between the tool and the workpiece. The problem that often occurs in the industrial world, especially manufacturing in the turning process, is the mismatch of the surface roughness of the turning results. Where one of the causes of the roughness results to be inappropriate is the machining parameters that are not adjusted and the high temperature of the workpiece that rubs against the tool during the turning process. Therefore, it is necessary to optimize the machining parameters and coolant used in order to obtain efficient machining parameters and coolant that produces low roughness. The purpose of this study was to determine the effect of variations in the spindle speed parameter and the composition of the coolant mixture, namely clogged oil, dromus and water on the surface roughness value of AISI 1045 steel. From the experiments conducted it was stated that the optimum level of each parameter for surface roughness was level 3 spindle speed 585 rpm and level 3 composition of the coolant mixture 30% clogged oil : 20 dromus : 50% water. The parameter that has a significant effect on the value of surface roughness is the spindle speed.
Analisis Perawatan Cutter Section Dredger Dengan Metode FMEA dan OEE Hardiatama, Intan; Yudah, Norman Audi Erlangga Pradipta; Sidartawan, Robertus; Basuki, Hari Arbiantara; Kristianta, Franciscus Xaverius
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.074 KB) | DOI: 10.35308/jmkn.v8i1.5454

Abstract

The development of technology and industry is currently being followed by increasing demand from the industry for mining or mineral materials, one of which is tin. Indonesia as the second largest tin producing country in the world plays a very important role in the development of technology and industry in the world. In Indonesia, tin mining is carried out by several companies, one of which is PT Timah (Persero) Tbk. This study aims to determine the effectiveness of the KIP 17 dredger system is 77% and the critical components obtained are the shaft and joint on the pump. The results of the analysis using Fishbone diagrams show that the quality of bolts and nuts and sealsused is not good. With the results of the study, it is recommended to increase personnel, especially in maintenance activities, and to improve the quality of nuts, bolts, and seals so as not to cause water to enter which can damage core components. Keywords—Mining, FMEA, Dredger 
Heat Treatment and Its Effect on Tensile Strength of Fused Deposition Modeling 3D-Printed Titanium-Polylactic Acid (PLA) Darsin, Mahros; Susanti, Rizqa Putri; Sumarji, Sumarji; Ramadhan, Mochamad Edoward; Sidartawan, Robertus; Yudistiro, Danang; Basuki, Hari Arbiantara; Wibowo, Robertoes Koekoeh Koentjoro; Djumhariyanto, Dwi
ComTech: Computer, Mathematics and Engineering Applications Vol. 15 No. 2 (2024): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v15i2.11255

Abstract

Titanium is a biocompatible metal commonly applied in biomedical fields such as bone and dental implants. Recently, the produced titanium-Polylactic Acid (PLA) filament for 3D printing Fused Deposition Modeling (FDM) technique is easier to operate and affordable. This filament contains less than 20% PLA, which is also biocompatible but hydrophobic and capable of producing inflammation of the surrounding artificial living tissue. Therefore, a heat treatment is needed to reduce or even eliminate PLA. The research aimed to optimize the mechanical properties and biocompatibility of titanium-PLA filaments through heat treatment, demonstrating significant advancements in 3D printing applications for biocompatible materials. A Thermogravimetric Analysis (TGA) was carried out to find out the right temperature for reducing PLA levels. Specimens were heat treated with four temperatures at 100oC, 160oC, 190oC, and 543oC, and two holding times of 60 and 120 minutes. The mass of the specimens was weighed before and after heat treatment to determine the mass reduction and tested for tensile, micrograph, and fractography observation. The result is a meagre mass reduction. The highest tensile strength of the heat-treated specimen with a heat treatment temperature of 160oC and a holding time of 60 minutes is 18.310 MPa. However, it is still below the strength of the non-heat treated specimen, 19.890 MPa. Specimens with low tensile strength have a microstructure that shows an uneven distribution of titanium particles. Last, fractography shows porosity in the specimens with the lowest tensile strength.
IMPLEMENTASI METODE TOTAL PRODUCTIVE MAINTENANCE (TPM) DALAM MENENTUKAN EFEKTIFITAS STASIUN PENGGILINGAN TEBU Ghaffar, Jakfat Maulid; Arbiantara, Hari; Mulyadi, Santoso; Sanata, Andi; Djumhariyanto, Dwi
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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

Abstract

The milling station is a station where sugar cane-based sugar is produced, readiness is needed especially from the point of view of equipment maintenance in order to support the production process. Total Productive Maintenance (TPM) is one method of maintenance approach with Overall Equipment Effectiveness (OEE) is one of the measuring tools in calculating the effectiveness of equipment. Failure Mode and Effect Analysis (FMEA) is one method in analyzing the cause and effect of each device so that later it is hoped that this research can determine the value of the effectiveness of the equipment and provide recommendations for improvements. The calculation of the effectiveness of the equipment at the milling station that the effectiveness values ​​from 2013 to 2017 are 75.87%, 84.17%, 87.58%, 61.53% and 92.59%. In 2013, 2014 and 2016 showed that the value of effectiveness is still below the standards of world class effectiveness values. Factors that influence the effectiveness of 2013 to 2017 are Reduce Speed ​​Losses and Set-up adjustments time. Improvement of recommendations according to the TPM pillar in increasing productivity is 5S (Seiri, Seiso, Seiton, Seiketsu, and Setsuke). Keyword: Total Productive Maintenance (TPM), Overall Equipment Effectiveness (OEE), Failure Mode and Effect Analysis (FMEA).
Pengaruh Penambahan Uap Etanol melalui Filter Udara terhadap Kinerja Mesin Diesel Menggunakan Bahan Bakar Premixed Dani, Dani Hari Tunggal Prasetiyo; Imam Sholahuddin; Haidzar Nurdiansyah; Hari Arbiantara Basuki; Dedi Dwilaksana; Linda Kurnia Supratiningsih
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 02 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i02.191

Abstract

The increasing need for energy and dwindling natural reserves encourage the search for alternative energy sources. One alternative energy source is biodiesel. Biodiesel can be produced from used cooking oil through the esterification and transesterification processes. However, biodiesel sourced from plant materials has disadvantages, one of which is its low calorific value. Most studies discuss the addition of chemical additives to increase the calorific value of biodiesel. However, the addition of ethanol vapor as an air additive to increase the calorific value of biodiesel is rarely discussed. This study was conducted experimentally, the study examined the effect of adding ethanol vapor to a diesel engine through an air filter. The diesel fuel used was dexlite type diesel fuel added with biodiesel from used cooking oil as much as 10% to 30%. Testing used additional ethanol vapor channeled through an air filter with a heating temperature of 90oC to 100oC. The results of the study were in the form of crankshaft rotation, effective power, and fuel consumption. The results showed that fuel with the addition of ethanol vapor produced the highest crankshaft rotation, effective power, and fuel consumption when compared to without the addition of ethanol vapor in all variations of the given fuel composition. The highest value of crankshaft rotation, effective power is in the B0 composition with values ​​of 32.53 rev/s and 2.74 kW, respectively. While the lowest fuel consumption is in the B70 composition with the addition of ethanol vapor of 105.7 seconds.
Co-Authors Agus Triono Ahmad Adib Rosyadi Ahmad Ayyub Syaiful Ahmad Syuhri Andi Sanata Aris Zainul Mutaqien Aris Zainul Muttaqin Danang Yudistiro Danang Yudistito Dani Arief Bahtiar Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Deni Yudas Priawan Dhimas Ilhamsyah Digdo Listyadi, Digdo Dwi Djumhariyanto Dwi Djumhariyanto Efendi , Moh Riski Elhamzah, Denaldy Elza Setya Erfina Ayu W. Erfina Ayu W., Erfina F.X. Kristianta F.X. Kristianta, F.X. Fachruzzaki, Fachruzzaki Faizun, Muhammad Muhtada Faris Ahmad Junaedi Fikril Hilmi Gaguk Jatisukamto Ghaffar, Jakfat Maulid Hafidz Ahmad Abdillah Haidzar Nurdiansyah Hary Sutjahjono Ilminafik, Nasrul Imam Sholahuddin Intan Hardiatama K.W., Robertoes Koekoeh khoirul fahmi aziz Kristianta, Franciscus Xaverius Linda Kurnia Supratiningsih M. Fahrur Rozy Hentihu Mahatma Junjung Mardlotila Mahros Darsin Mochamad Edoward Ramadhan Moh. Nurkoyim Kustanto Mohammad Firman Mohammad Firman, Mohammad Mohammad Hartono Muhamad Zaky Rizqullah Nurrosidi Muhammad Maulana Andi Surya Muhammad Ridho Muslih Muhammad Muslih Muhammad, Muslih Muttaqin Mar'iy Muslih Nasrul Ilminnafik Nofal Kharis Pratama, Aly Wafa R. Koekoeh Koenjtoro Wibowo Rika Dwi Qoryah Rina Lestari Rizal, Ahmad Ayyub Syaiful Robertus Sidartawan Robi Subastian Rossy, Rio Martha Febriana Salmansyah, Dathantara Santoso Mulyadi Sella Devianty Sella Devianty, Sella Sumarji Susanti, Rizqa Putri Syahriza, Mochamad Rifki Thatit Widya A.P Triana Lindriati Trifiananto, Muhammad Yahya, Hafiz Indratma Yudah, Norman Audi Erlangga Pradipta Yuni Hermawan