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INDONESIA
JURNAL POLI-TEKNOLOGI
Published by Politeknik Negeri Jakarta
ISSN : 14122782     EISSN : 24079103     DOI : https://doi.org/10.32722/pt.v20i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Poli-Teknologi Journal is a journal, which began publication in 2002, published by the Research and community service Unit of Politeknik Negeri Jakarta. It starts from Volume 1 Number 1 in January 2022 for printed version; ISSN (print) 1412-2782 and ISSN (online) 2407-9103. Poli-Teknologi Journal is a series of scientific publications in applied science and technology area from the perspective of a multi and interdisciplinary studies and it is published 3 times in year.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 410 Documents
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PENGARUH SPUTTERING TiN TERHADAP KEKASARAN, KEKERASAN PERMUKAAN MATERIAL AISI316L Jemssy Ronald Rohi; Priyo Tri Iswanto; Tjipto Sujitno; Erich Umbu Kondi
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2412

Abstract

AISI 316L is widely used for implantation in orthopedic surgery due to its good corrosion resistance, mechanical properties and low cost. However, AISI 316L is not well suited for biocompatibility with the body, so implant material with AISI 316L can’t be used for a long time. One way to improve the corrosion resistance and mechanical properties of AISI 316L is to perform a surface treatment such as sputtering. This study discusses the effect of deposition sputtering TiN of 60, 90, 120 and 150 minutes on roughness and surface hardness at a ratio of argon gas and nitrogen to 80% Ar:20% N2. The results of the surface roughness value of the TiN sputtering layer deposited to AISI 316L for 60, 90, 120, and 150 minutes were 0.02 μm, 0.04 μm, 0.06 μm, and 0.04 μm respectively. This shows that the coating time of TiN in AISI 316L has no significant influence on value of surface roughness. Surface hardness results at 60, 90, 120, and 150 minutes were obtained with 268 HVN, 275 HVN, 278 HVN and 282 HVN. Increased hardness value, as the TiN thin layer has a higher hardness value compared to AISI 316L. The longer the deposition time, the more layers are formed and the layer becomes thicker. With the thickness of the layer, the density at the grain boundary increases. Because the higher density leads to grain growth, in which form micropores.
KAJIAN KUALITAS PEMBAKARAN TERHADAP PENGGUNAAN FILTER BBM PADA MESIN DIESEL Tatun Hayatun Nufus; Ariek Sulistyowati; Asep Yana; Fitri Wijayanti
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2413

Abstract

The price of oil fuel continues to rise, decreased supplies oil at the other side, those two factors motivate researchers to conduct research related to the efficient use of fuel. Have been made three types of fuel oil which the principle of an electromagnet used a filter, all three made of the coil with a convolution wire as many as 5000 a convolution and diameter of the nucleus of a coil 44.5 mm, 28.5 mm and 17.5 mm, a filter tested in a diesel engine. Testing done in the rpm the ignition is started 1100 until 1700 rpm, by opening throttle % to 60 % from 30%. Testing first one was done by making constant round of 1500 rpm and openings throttle vary from 30 % to 60%, next testing done with the variation of rpm start 1100 rpm until 1700 rpm by making constant valve as 40 % and of 60 % . The purpose of the variations to obtain optimum result against consumption of material fuel ( sfc ) the most little uses. Testing was done in a laboratory material.
PERUBAHAN SISTEM KONTROL DARI PLC KE DCS PADA GRUP BAG FILTER 563-BF1 Jefri Gunawan; Fatahula Fatahula; Juhartono Juhartono
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2414

Abstract

Bag filter is an equipment in cement industries that used for handling dust from material or separate fines dust with air to make the area is not dusty and it is not make accumulation material. Bag filter (563-BF1) is used for handling dusty area at outlet ball mill in the cement making process. The working systems of bag filter group (563-BF1) is controlled by PLC (Programmable Logic Control). However, the PLC is obsolete so it takes a long time to handle when damage occurs and causes the risk of production loss reach Rp 1,301,801,760.00. In addition, communication systems between PLC with Central Control Room (CCR) that are less reliable cause communication to fail on April 2019 so that the equipment cannot be controlled. To overcome this, it is necessary to upgrade the PLC and communication system to the latest version or change it to DCS (Distributed Control System). Upgrading PLC requires huge costs with almost the same communication system reliability. While changing the control system to DCS is cheaper with better reliable system. So, we chose to change it to DCS. After that control system is changed to DCS on April 2019, the risk of production loss can be eliminated with saving cost in the amount of Rp 220,402,885.00 and after 3 month the communication failed is never occurs (it is more reliable).
Analisis Karakteristik Pengguna Bus BSD Link Untuk Desain Koridor Baru Menggunakan Model Permintaan Perjalanan Verdy Ananda Upa; Rahmat Setyadi
Jurnal Poli-Teknologi Vol. 19 No. 1 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i1.2435

Abstract

Bumi Serpong Damai (BSD) is one of self contained city in Jabodetabek district. Sinarmas as developer of BSD started to develope the Mass Rapid Transit which special operated on that. Concept of MRT has been operated in the form of Bus Rapid Transit. A new BRT corridor implementation need a Passenger Demand Prediction . Thus, a special BRT Passenger Demand Modelling Method for a new BRT Line need to be developed. This attempt needs knowledge on the Existing BRT User Trip Characteristics. BSD Link User Trip Characteristics Survey were executed on Corridor Sector 1.3 Greenwich Park, during morning peak hour. The result indicates that the BRT are used mainly for working (63%) and schooling (37%) trips, the BRT passengers are the previous public transport (45%) and motorcycle (55%) users. The trip origin zone is extended 1 km to the left and right of the BSD Link corridor, while the trip destination zone is extended 500 meters to the left and right of the BSD Link corridor. The embarking connecting trip modes are dominated by motorcycle (43%) and walking trip (57%), while the alighting connecting trip modes are dominated by motorcycle (16%) and walking trip (84%) 
Pengaruh Dip Time Pada Unit Processor Terhadap Linearisasi Plate Cetak Cholid Mawardi
Jurnal Poli-Teknologi Vol. 19 No. 2 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i2.2499

Abstract

This study aims to analyze the effect of the parameters on the processing unit on the quality of the printing plate. The parameters used in this study use the immersion time method. This research activity also aims to be able to know the real picture of the effect of changes in immersion time on the quality of the printed plate. Expected results of research on the effect of immersion time on the quality of printing plates, namely the extent to which immersion time affects the quality of Computer to Plate (CtP) plates to be printed on offset printing machines. Next, the researchers will also formulate problems that arise due to the development of plaques and provide solutions. This research should be a reference for users involved in improving print quality. For the printing industry can be used as a material consideration in the process of manufacturing quality printing plates for the good of the printing industry which is good at global competition.
Eksperimental Perbandingan Kekuatan Tekan Karakteristik Beton Self Compacting Menggunakan Agregat Kasar Alami Dan Agregat Kasar Daur Ulang Martinus Pramanata Sapeai; Johannes Adhijoso Tjondro
Jurnal Poli-Teknologi Vol. 19 No. 1 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i1.2698

Abstract

Utilization of recycled concrete waste as an alternative to natural coarse aggregates in this experiment is in accordance with the concept of sustainable construction. Concrete is the main material of structural elements most commonly used in general construction and has properties that are difficult to recycle by themselves naturally. Nowdays concrete innovation with the concept of self compacting (SCC) is widely used especially in high rise building and buildings with special specification. SCC has high flowability properties so that it can flow and compact themselves, but in SCC with normal quality still need compactor. The concept of making test specimens is in accordance with real conditions in the field, where aggregates do not go through a cleaning process. There are four different mix design with the required specified compressive strength of 20 MPa. Mix design 1A (natural coarse) and 1B (recycled coarse aggregates) has a maximum aggregate size 12.50 mm, and mix design 2A (natural coarse) and 2B (recycled coarse aggregates) has a maximum aggregate size 19.00 mm. This experimental results in specified compressive strength concrete for mix design 1A, 1B, 2A, and 2B as follows: 30.93 MPa, 26.21 MPa, 30.82 MPa and 27.60 MPa. Therefore, recycled concrete aggregates can be alternative to natural coarse aggregates and can also be made into concrete with the SCC concept.
Rancang Bangun dan Pengujian Kinerja Mesin Pemisah Isi Biji Buah Durian Akmal Indra
Jurnal Poli-Teknologi Vol. 19 No. 2 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i2.2701

Abstract

The making process of Lempuk Durian is almost same  as Dodol’s, the difference is only at the mixing of sticky rice (ketan). Dodol is made with the mixing of sticky rice while Lempuk isn’t. Durian flesh is separated by its contents and then finely ground with a grinding machine. The process of separating the contents and seeds of durian fruit is still using conventional methods, by using a punch-filled basket while being pressed by hand. This way can cause injury to the hand, this way can cause injury to the hand, requires a long time and workers get tired more quickly. The purpose of this research is to make content and durian seed separator machines and conduct performance analysis. This content and durian seed separator machine has a capacity of 20kg / production. After testing and observing the durian seed separator machine, then the performance analysis is carried out to determine the ability of the machine. Machine working capacity (KKM) is obtained at 1 kg / minute with the value of the separation of contents and durian seeds of 87%.
Prototipe Mesin CNC Diode Laser Cutting 5500 Miliwatt Untuk Pembuatan Produk Kreatif Bahan Akrilik suharto suharto
Jurnal Poli-Teknologi Vol. 19 No. 2 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i2.2713

Abstract

Advances in manufacturing technology in the creative industries began to leave the dominance of the role of humans into automated systems to produce high-quality products. CNC laser machine is a computer-programmed machine used to make a product by cutting, scraping, and engraving. In general, people think that CNC machines are expensive goods. The purpose of this study was to design a prototype diode type CNC laser machine for the manufacture of creative acrylic material products. The research method uses the stages of designing, manufacturing, and testing the performance of a diode type CNC laser machine. The CNC laser machine is designed as cheaply as possible by minimizing self-made components and using standard components such as machine frames using aluminum extrusion, laser using a 5500 mWatt laser diode type, stepper motor as an X, Y, and Z axis. Control software is used by USB CNC controller . CAD software is used by Aspire Vectric and CAM software is used GRBL with Adruino Nano microprocessors. The results of a  Diode Laser CNC machine prototype with dimensions of 450×400×300 (mm); work area dimensions 300×200×35; engine weight 5 (kg). The ability to cut a diode Laser of 5.5 watt CNC machine on black acrylic 3 (mm) with an average time of 0.5 mm/s is the best result. Diode Laser CNC Machine engraving capability of clear acrylic material with dark color paper cover machining time 10 (mm / s).
Perkiraan Tinggi Standar Lantai Jembatan Terhadap Pengaruh Muka Air Banjir Mursid Mufti Ahmad; Deny Yatmadi
Jurnal Poli-Teknologi Vol. 19 No. 1 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i1.2722

Abstract

One of the bridge crossing of the Ciliwung River at the upstream side entered DKI-Jakarta area is MT. Haryono Bridge, where the bridge has the heavy and jam traffics. Every rainy season, water level of Ciliwung River flood always increase, where the peak point of the flood was occured on February in 2007, the water level exceeded the bridge deck level.  Therefore, it would be necessary to determine a height standard of the bridge deck of MT.Haryono bridge against to the water level of Ciliwung River when the peak flood occured, the existing of the elevation at the below of the bridge deck is + 18.50 meter and the elevation above the bridge deck is + 19.50 meter. Hydrology analysis using Log Pearson type III performed to determine the data of average daily and yearly rainfall around of catchment area of Ciliwung River with using the water level control point near Kalibata Bridge and the flood hydrograf was calculated using synthetic hydrograph method from Nakayasu. Hydraulic analysis utilized the of HEC-RAS software (4.1) using the maximum value of hydrograph unit and consists of two simulations, where the first is simulation of calibration model of Ciliwung River at the upstream side based on the flood occured on February 04th 2007 (called as Q2007) and the second simulation using some scenarios for some return period of 2, 5, 10, 20,50, 100 years. Every result of both simulations generates the height of bridge deck from the water level of flood according to the exsisting requirements. From these results, it could be determined the elevation of bridge deck for return period of flood for the peak flood 2007 and for 2, 5, 10, 20, 50, 100 yearly, and, such as +19.50, +20.50, +21.00,  +21.10, +21.80, + 22.10 dan 22.00 meter.
Penyediaan Tempat Istirahat Pada Jalan Umum Melalui Corporate Social Responsibiliy Hendra Hendrawan
Jurnal Poli-Teknologi Vol. 19 No. 1 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i1.2723

Abstract

Rest Areas on non toll roads are road equipment that are not directly related to road users whose primary function is to reduce the number of accidents caused by driver and vehicle fatigue. This is in accordance with the agenda of the National General Plan of Road Safety (RUNK) to provide preventive infrastructure against potential accidents. To provide safe, convenient, secure, and sustainable rest areas, the government is faced with funding constraints. In the implementation, the construction of rest areas require funds that are not little, especially for land procurement and physical infrastructure development. For that reason, funding alternative is needed through Corporate Social Responsibility. This paper aimed to examine the feasibility of rest areas development through Corporate Social Responsibility by considering the aspect of legality and potential problems. The method used was literature review which included the aspects of feasibility, legality, and mechanism. The results showed that the rest areas can be part of Corporate Social Responsibility. The results of the study also indicated the need for additional tools in the form of regulations and guidelines to govern the partnership pattern so that development through this mechanism is well-running, supervised, and accountable

Page 34 of 41 | Total Record : 410

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