cover
Contact Name
Asri Aisyah
Contact Email
asri.aisyah@polytechnic.astra.ac.id
Phone
+62857-7567-8737
Journal Mail Official
editor.technologic@polytechnic.astra.ac.id
Editorial Address
Politeknik Astra Jl. Gaharu Blok F-3 Delta Silicon 2 Lippo Cikarang, Kel. Cibatu, Kec. Cikarang Selatan, Bekasi, Jawa Barat 17530
Location
Kota bekasi,
Jawa barat
INDONESIA
TECHNOLOGIC
Published by Politeknik Astra
ISSN : 20858507     EISSN : 27223280     DOI : http://dx.doi.org/10.52453/t.v12i1.306
TECHNOLOGIC adalah jurnal dengan p-ISSN 2085-8507 dan e-ISSN 2722-3280 yang diterbitkan oleh LPPM Politeknik Manufaktur Astra. Jurnal ini diterbitkan dua kali setahun pada bulan juni dan Desember. Publikasi berisi artikel yang berasal dari hasil penelitian terapan dan studi analisis di bidang ilmu pengetahuan dan teknologi, khususnya meliputi teknologi mekanik, litrik, elektronika, industri, informatika, sipil. Artikel yang masuk ke redaksi diseleksi dengan sistem blind peer-review untuk menjaga obyektivitas. Adapun fokus dan ruang lingkup dari Jurnal Technologic adalah sebagai berikut: Teknik Mesin Teknologi manufaktur, Disain mekanis, Otomotif, Robotika dan Otomasi, Mekatronika, Teknologi lingkungan, Konversi energi, Teknik Listrik, Elektronika, dan Informatika Sistem tenaga, system instrumentasi dan control, telekomunikasi dan teknologi informatika, Aplikasi Elektronika, Aplikasi sensor dan actuator, Kecerdasan artifisial, Sistem Informatika, Elektronika Daya, Energi Terbarukan, Jaringan Komputer, Sistem Komunikasi Multimedia, Teknik Komputer, Sistem Telekomunikasi, Sistem Komunikasi Nirkabel, Jaringan Sensor Nirkabel Teknik industry Sistem produksi, optimisasi system industry, Planning and Production Control, manajemen kualtas, ergonomic, Disain produk Teknik Sipil Teknik Konstruksi dan bangunan Gedung
Articles 12 Documents
Search results for , issue "Vol 15 No 1 (2024): TECHNOLOGIC" : 12 Documents clear
MENINGKATKAN BENEFIT PADA PROSES PENGURASAN AIR DARI KONTROL ELEKTRIK KE KONTROL PNEUMATIK, PADA SISTEM UDARA BERTEKANAN Nugraha, Afitro Adam; Yohanes C. Sutama; Fauzan Arya Ramadani; Ade Susilo; Edi Widyartono, Andreas
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.367

Abstract

In PT ADM Casting Plant, the use of compressed air is essential to operate several production machines that utilize pneumatic systems. The compressed air is sourced from the compressors owned by PT ADM Casting Plant. The compressed air must be dry and not wet or moist. If it is wet or moist, it can cause water to enter the air pipelines of the production machines and pose a corrosion risk due to condensation in the pneumatic lines of the production machines. Before entering the production machines, the compressed air must undergo several processes such as Suction-Storage-Drying. However, during the storage process, a significant amount of compressed air is wasted during the draining of condensed water accumulated in the Air Receiver Tank. The draining process still utilizes solenoid valves without any separator or divider between the condensed water and the compressed air, and it still relies on timing or time-based valve opening and closing as a benchmark. The wasted air results in difficulty achieving the desired air pressure produced by the compressor. Consequently, the compressor continues to operate to reach the predetermined air pressure. After analyzing the problem and available data, a solution was developed by replacing the solenoid valves with a Pneumatic No-Loss Drain. The purpose of this replacement is to serve as a separator between the condensed water and the compressed air during the draining process.
PEMANFAATAN ENERGI ANGIN COOLING TOWER SEBAGAI SUMBER ENERGI ALTERNATIF DI AREA PAINTING PT ASTRA DAIHATSU MOTOR KARAWANG Nugraha, Afitro Adam; Lukman Wijanarno; Ajib Rosadi; Hadiyanto
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.369

Abstract

The global energy crisis which is based on fossil-based energy security encourages efforts to make a just and sustainable energy transition. This study aims to explore and test the potential utilization of wind energy sources from Cooling Towers as an efficient and sustainable alternative energy source. Cooling Tower at PT Astra Daihatsu Motor is the focus of research because this company has implemented the Sustainable Development Goal's (SDG's) program which is in line with the goal of contributing to handling global problems, including in clean energy and tackling climate change. Wind energy from the Cooling Tower is analyzed using the wind power formula which produces a power of 1,373 watts at an average wind speed of 9 m/s from 1 hole in the Cooling Tower. To optimize its utilization, a HAWT (Horizontal Axis Wind Turbine) type wind turbine is installed in the Cooling Tower chimney. This turbine produces 425 watts of wind power with a power coefficient of 0.43 and a tip speed ratio of 9.7. PMSG (Permanent Magnet Synchronous Generator) type generator was chosen as a converter of kinetic energy into electrical energy. The implementation results show that the wind turbine can only produce 79.52 watts with a generator efficiency of 18.7% of the received wind resources. This research obtained electricity cost savings of Rp. 660,660/year and reduce TCO2 emissions by 0,416 TCO2/tahun. Utilization of wind energy sources from Cooling Towers shows potential as a sustainable alternative energy source. In addition to reducing dependence on fossil energy sources, the use of wind energy also has a positive impact on the environment by reducing greenhouse gas emissions.
MENINGKATKAN EFEKTIVITAS PROSES PURGING ENGINE DIESEL MENGGUNAKAN DIESEL PURGING KIT BERBASIS ARDUINO UNO DI PT ASTRA INTERNATIONAL ISUZU SALES OPERATION CABANG CIPUTAT Nugraha, Afitro Adam; Prio Sembodo; Ajib Rosadi; Busrah
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.370

Abstract

A diesel engine is a machine known as an internal combustion engine which uses the heat of compression to ignite fuel that has been sprayed by a nozzle into the combustion chamber. The problem that often occurs in Diesel engines is interference with the fuel system. When these disturbances occur, trouble shooting must be carried out on the fuel system and periodic maintenance can be carried out to minimize disturbances to the Diesel engine fuel system. The Arduino Uno-based Diesel purging kit is equipped with digital parameters to read the turbidity level of the purging liquid so that it is expected to facilitate mechanics in the Diesel engine purging process and make it more efficient and effective. The test results show a graphic of turbidity during the first 5 minutes to 20 minutes there is a significant increase in the percentage of liquid turbidity. However, in the last minute of the process there was only an increase of 2% which means that the maximum result of the process touched the turbidity rate of 72%. After the procurement of the tool, the Diesel engine purging process cut the time by 30 minutes compared to before the tool was available
MENURUNKAN CYCLE TIME STOCK OPNAME IMPORT PARTS DENGAN PATTERN SUPPLY FORM BERBASIS WEBSITE DI ASSEMBLING K-LINE 5 PT ASTRA DAIHATSU MOTOR Nugraha, Afitro Adam; Rudi Kiswanto; Yohanes C. Sutama; Pramastya Widya Naluri
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.371

Abstract

PT Astra Daihatsu Motor-Engine Plant focuses on producing engines for Daihatsu vehicles and several Toyota vehicles. The Quality Inhouse-Section Audit System Development Department, which focuses on auditing the entire production process, found that the Exicom-Section Import Component Department's KPI had not yet reached the target in the productivity section due to a delay in supply to the k-line 5 assembly. The supply delay was due to the cycle time target of the stock taking process not being achieved (target 40 minutes and actual 63.1 minutes). Then, not achieving the target cycle time of the stock taking process is analyzed using fishbone analysis so that the root cause is found, namely PIC inputs twice for each data, final stock data input to pattern supply sheets and files, stock taking locations (on shelves, dolly transit, and dolly setting), and pattern supply files can only be accessed by a computer in the office import component. The author will address these four root causes with a website-based supply form pattern that will speed up the stock taking process so that the target cycle time (40 minutes) will be achieved
TINJAUAN PERBANDINGAN METODE PERHITUNGAN VOLUME TIMBUNAN DI PROYEK SIERRA INTERCULTURAL SCHOOL SECARA MANUAL DAN FOTOGRAMETRI Silaban, Merdy Evalina; Prakasa, Muhammad Fajri Eka
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.372

Abstract

The calculation of volume for earthwork is a critical aspect in various fields, including construction. This research aims to compare the methods of manual earthwork volume calculation and photogrammetry-based methods. The manual method relies on direct physical measurements on the earthwork, while photogrammetry involves processing aerial images taken from the air using aerial cameras or drones. This study presents an in-depth analysis of the accuracy, efficiency, and cost of both earthwork volume calculation methods. Additionally, environmental implications are explored to understand the environmental impacts of using each method. Given the significance of earthwork volume calculations in a project, research was conducted on the Sierra Intercultural School Project by comparing volumes using the manual method and photogrammetry-based method in AutoCAD Civil 3D, with calculations using Microsoft Excel as a comparative tool. The results were subsequently compared with the actual field earthwork volume. The research findings revealed a volume difference of Rp. 140,275,132 between the manual and photogrammetry-based methods, with a volume discrepancy of 838.75 cubic meters between the two methods. The results of the study indicate that the photogrammetry method can provide results comparable to the manual method in terms of accuracy but with greater time efficiency.
RANCANG BANGUN UNIVERSAL TOOL BIT UNTUK PENGENCANGAN MUR PENGUNCI TIE ROD Nugraha, Afitro Adam; Yusak Faqih Wibowo; Yohanes C. Sutama; Ajib Rosadi
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.373

Abstract

Abstract-- Precise tightening of tie rod lock nuts is a crucial aspect in maintaining the safety and optimal performance of a vehicle's steering system. The primary challenge in this process is the impracticality of tightening using torque wrenches connected to shock wrenches due to limited accessibility and the difficult-to-reach location of the lock nuts. To address this obstacle, researchers have designed an effective solution in the form of a torque wrench extension made from S45C steel. This torque wrench extension allows technicians to tighten tie rod lock nuts that were previously inaccessible using shock wrenches, while also applying the required torque specified for the application. The objective of this study is to evaluate the effectiveness of using the torque wrench extension to enhance the accuracy of tightening tie rod lock nuts at UPT Otomotif Politeknik Astra. Experiments were conducted by applying the torque wrench extension to several vehicles brought into the Automotive workshop at UPT Otomotif Politeknik Astra. Due to the inability to tighten lock nuts with shock wrenches, a direct comparison between the tightening using the torque wrench extension and conventional tightening methods could not be performed on the tie rod lock nuts. Therefore, the comparative tightening was executed on sample nuts. The research findings demonstrate that the utilization of the torque wrench extension significantly improves the accuracy of tightening tie rod lock nuts with lower error rates compared to conventional tightening methods. This discovery suggests the effective application of the torque wrench extension as a solution to enhance the accuracy of tie rod lock nut tightening, not only at UPT Otomotif Politeknik Astra but also at other locations. Implementing the torque wrench extension will effectively contribute to maintaining the safety and optimal performance of a vehicle's steering system while reducing the potential risks arising from improper tightening
ALTERNATIF DESAIN STRUKTUR BAJA BENTANG 24 METER STRUKTUR BANGUNAN 3 LANTAI Arissaputra, Sofian; Aprillia, Ananda
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.375

Abstract

Salah satu tantangan dalam desain stuktur baja adalah desain yang efektif dan efisien serta memenuhi pesyaratan SNI 1729-2020. Penelitian ini bertujuan melakukan studi banding alternative untuk membandingkan kekuatan, kemampuan layan, dan berat material dari dua model desain balok alternative, yaitu balok I baja dan balok boks baja dengan menggunakan metode LRFD dibandingkan dengan desain awal yaitu balok truss. Penelitian menggunakan program SAP 2000 dan perhitungan excel yang menunjukkan hasil dari balok I dan boks baja memenuhi persyaratan yang ditetapkan di SNI 1729-2020. Adapaun hasil dari penelitian ini adalah balok I yang dipakai adalah ukuran WF912x302x18x34 dengan berat material balok adalah 280,46 kg/m dan ukuran balok boks adalah profil 700x700x19 dengan berat material 406.18 kg/m. Sedangkan untuk balok truss sendiri berat material yang diperoleh adalah 478.31 kg/m. Dalam perbandingan desain balok alternatif 1 (balok I) menghasilkan penghematan sebesar 41% (4748,21 kg) dan Rp74.113.380 (34%) dibandingkan dengan desain balok truss. Sementara itu, desain alternatif 2 (balok boks baja) menghasilkan penghematan sebesar 15% (1731,07 kg) dan Rp20.501.800 (10%). Berdasarkan hasil penelitian ini, dapat disimpulkan bahwa desain balok alternatif, baik balok I maupun balok boks merupakan solusi yang lebih efisien dan ekonomis dibandingkan dengan balok truss.
ANALISA POMPA COOLING WATER SUPPLY UNTUK MENGHASILKAN STANDAR POMPA YANG EFISIEN DI COOLING TOWER 4 PT EFG Purwoko, Yohanes Agung; Ridho Febrianto, Fendi; Susilo, Ade; Febriyanto, Rusdi
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.382

Abstract

PT EFG Casting Plant is a manufacturing company that produces engine components used for Daihatsu car engines and some Toyota car engines. The production process is closely related to the high-temperature molding process using a casting machine. Overall, it is cooled using water from a cooling tower and the water is supplied using 2 pumps. An analysis was carried out which aims to determine the efficiency of the two cooling water supply pumps and from the results of this analysis obtained a low efficiency of 66% for each pump, this is because there is a 50% closure of the valve after the cooling water supply pump and if the valve is not done closing can cause cavitation in the pump. The low efficiency of the pump motor can result in less than optimal use of electric power in the pump. To overcome this problem the authors make improvements by providing standard pumps that have optimal efficiency in piping installations at PT EFG. So that from the results of these calculations it was found that initially using two cooling water supply pumps to meet the needs of cooling water, it can be reduced and replaced by using one efficient pump and power use can be optimized. Pump motor efficiency can increase up to 74% and can reduce the use of electric power by 53,049.9 kWh. Keywords: cooling tower, pump efficiency, pump standardization, energy.
RANCANG BANGUN ALAT SCALING PORTABEL UNTUK MENURUNKAN WAKTU DOWNTIME PADA DIES TIPE M DI PT. GZB Nursim; Ariansyah, Ferdhika
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.383

Abstract

GZB is a manufacturing company engaged in the two-wheeled automotive sector, whose production process includes various processes such as casting, plastic injection, machining, assembling, painting steel, painting plastic, press, welding, and final inspection. In the production process, the company has potential losses in production such as potential reject parts and lost production time, which should not be included in the company's production target. Researchers make observations and genba in the field to analyze the causes of production lost time and reject parts, especially in the casting section. Lost production time is the main focus of this research because this has an impact on reject parts as well. The purpose of this research is to find the right solution to reduce production lost time caused by downtime maintenance dies. A solution for making a portable scaling tool was found because this solution was the best choice in terms of time availability, human resources, and researcher analysis. This tool is designed to be portable so that it can be easily moved and used in hard-to-reach places. The research method used is 8 steps with the support of 7 tools. Tests were carried out on Type M dies. The test results showed that using this portable scaling tool can significantly reduce downtime. This tool has the potential to increase operational efficiency and productivity. Keywords: Portable Scaling Tool, Casting, Downtime, Eight Steps and Seven Tools, Production Lost Time.
PEMBUATAN JIG POSITIONING UNTUK MENGURANGI CYCLE TIME PROSES ASSY UNIT PEMASANGAN NUT SPRING M5 KE LIGHT ASSY FRONT COMB PADA STATION 456 TYPE MU26 DI PT.XYZ Yuselin, Nensi; Usman, Muhamad
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.428

Abstract

PT. XYZ merupakan perusahaan industri otomotif yang memproduksi sepeda motor, yang mana salah satu departemen yang ada di PT.XYZ yaitu produksi, yang mana Assy Unit A (AUA) menjadi salah satunya. Pada AUA terdapat station 456 yang mana kegiatannya kerja diantaranya yaitu pemasangan nut spring M5 pada part light assy front comb. Sesuai dengan standar SMQCD maka perlu adanya improvement pada station 456 karena adanya reject part yaitu part light assy front comb. 456 karena adanya reject part yaitu part light assy front comb. Setelah dianalisa secara lebih lanjut maka didapatkan inti permasalah dari hal tersebut yaitu manpower kesulitan pada saat proses pemasangan karena tidak adanya alat bantu untuk menahan part dan memposisikan part. Perbaikan yang dilakukan pada station 456 yaitu dengan membuat alat bantu berupa jig positioning yang mana alat ini berfungsi sebagai penahan part dan peninggi agar pada saat pemasangan nut spring M5 ke light assy front comb menjadi lebih mudah. Setelah dilaksanakannya perbaikan, cycle time yang awalnya 30 detik turun menjadi 26,61 detik dengan tingkat penurunan 11,3%, dan presentase reject part dari 8pcs/bulan turun mejadi 0pcs/bulan dengan tingkat penurunan 100%

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