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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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Analisis Tingkat Kecacatan Produk Cetak Kemasan Karton Lipat Dengan Pendekatan DMAIC Six Sigma Saeful Imam; Wiwi Prastiwinarti
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.v19i2.2951

Abstract

The map of competition in the business world in the industrial sector makes consumers' demands on the quality of products produced even higher so that the industry has an obligation to provide the best service to consumers in order to maintain the sustainability of its business. This is evenly distributed in all industrial sectors including the printing industry. Based on preliminary observations at one of the large printing presses in Jabodetabek the failure rate of printed folding carton packaging products produced is still quite large. The integrated production process makes the process results affect each other the number of defects in the next process. The results of observations show that of the 3 main processes of folding cardboard packaging production at PT.X, the aim of printing and ponding has the highest defect percentage of 47% and 44% of the total defect, while the glueing  process has the lowest percentage of 7% with a total total defect of 827,347 packages of a total production of 4,735,350. From the results of data recapitulation and calculation of the number of defects, it can be seen that the sigma value of the company with the sample production data taken has an average sigma of 3.6. Through the application of the Six Sigma DMAIC method this research seeks to provide solutions in overcoming the problems of defective products that occur during the production process so that the main purpose of the printing industri in increasing productivity can be achieved.
ANALISA PERBANDINGAN METODE FUZZY MAMDANI DAN SUGENO DALAM MEMPREDIKSI JUMLAH PERSEDIAAN OPP FILM DI PT XYZ Corry - Amelia
Jurnal Poli-Teknologi Vol. 19 No. 3 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i3.2983

Abstract

Kelancaran proses produksi kemasan flexible penting untuk diperhatikan di PT XYZ. Namun keterlambatan produksi akibat kekurangan stok bahan baku dasar pernah terjadi di PT XYZ. Permintaan jumlah bahan baku yang tidak tepat, dapat berakibat pada kehabisan bahan baku yang berdampak pada terganggunya operational. Sehingga, pengendalian ketersediaan bahan baku yang optimal sangat diperlukan demi kelancaran produksi. Berdasarkan data bahan baku, penggunaan bahan baku dasar terbanyak OPP Film 18µ. Penelitian ini bertujuan untuk memprediksi jumlah stok akhir bahan baku OPP Film 18µ ukuran 895×8000mm dan 1010×8000mm yang optimal. Salah satu metode yang dapat menganalisa ketidakpastian, Fuzzy Logic. Dilakukan perbandingan hasil prediksi stok akhir yang diolah dengan metode Fuzzy Mamdani, dan Fuzzy Sugeno. Untuk menentukan metode fuzzy yang terbaik dalam memprediksi stok akhir bahan baku, dilakukan analisis uji validitas menggunakan Mean Absolute Percentage Error (MAPE) terhadap hasil prediksi disetiap metode. Berdasarkan hasil perhitungan MAPE, nilai persentase error metode Fuzzy Mamdani terkecil dibandingkan metode Sugeno. Dengan nilai MAPE untuk OPP Film 895mm sebesar 13.05% dan untuk OPP Film 1010mm sebesar 0.34%. Sehingga, metode Fuzzy Mamdani dapat dikatakan lebih optimal digunakan dalam perhitungan stok bahan baku OPP Film 18µ ukuran 895×8000mm dan ukuran 1010×8000mm di PT XYZ.
ANALISIS SAMBUNGAN BALOK PRECAST SEDERHANA DENGAN SISTIM DOUBLE LAPSPLICES MIDDLE WET JOINT DI MOMEN MAKSIMUM Andrias Rudi Hermawan
Jurnal Poli-Teknologi Vol. 20 No. 1 (2021)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v20i1.2998

Abstract

Pada penelitian sambungan balok pracetak sederhana dengan sistm double lapsplices middle wet joint pada balok pracetak ini telah dihasilkan suatu perbandingan kekuatan lentur antara balok pracetak dengan sambungan di tengah bentang (middle wet joint) dengan balok konvensional. Metoda pengujian yang diterapkan adalah pembebanan satu titik pada balok di tengah bentang.Dari hasil yang ada terlihat bahwa performa balok pracetak yang disambung di tengah bentang dengan sistim middle wet joint dibandingkan dengan balok konvensional adalah lebih baik, hal itu dibuktikan pada kurva hubungan lendutan-beban antara benda uji konvensional 1 dan benda uji konvensional 2 dengan benda uji pracetak 1 dan benda uji precast 2. Dari kurva yang ada diketahui bahwa benda uji balok pracetak 1 mempunyai lendutan 10 mm pada beban 151,8 KN dan benda uji precast 2 mempunyai lendutan 16 mm pada beban 169,2 KN sedangkan pada benda uji konvensional 1 mempunyai lendutan 47 mm pada beban 145,5 KN dan benda uji 2 mempunyai lendutan 40 mm pada beban 144,7.KN. Kesimpulan dari penelitian ini adalah bahwa balok precast mempunyai performa yang lebih baik dibandingkan balok konvensional.
STUDI EKSPERIMENTAL BALOK KAYU LAMINASI DENGAN VARIASI MODULUS ELASTISITAS DAN BENTUK PENAMPANG Alvianti Alvianti
Jurnal Poli-Teknologi Vol. 20 No. 1 (2021)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v20i1.3000

Abstract

Balok kayu glulam digunakan untuk mendapatkan dimensi penampang yang dibutuhkan. Tujuan dari penelitian ini adalah mencari kapasitas lentur yang optimal berdasarkan bentuk penampang glulam dari 4 buah papan. Tujuan lainnya adalah membandingkan perilaku lentur balok glulam Albasia dan kombinasi jenis kayu Albasia-Meranti. Papan kayu disusun menjadi penampang persegi panjang, I, dan boks menggunakan perekat ‘epoxy’. Dasar perencanaan bentuk penampang I dan boks adalah memiliki shear flow terkecil pada pertemuan web dan flens. Balok glulam kombinasi jenis kayu menggunakan kayu Meranti pada bagian flens penampang I dan boks. Pengujian lentur balok menggunakan metode ‘third point loading’. Kapasitas lentur dan daktilitas balok glulam Albasia seluruhnya dengan penampang I adalah yang paling besar dibandingkan balok penampang persegi panjang dan boks glulam Albasia seluruhnya. Penggunaan kayu Meranti pada flens meningkatkan kapasitas lentur penampang I dan boks hingga 44.41% dan 57.56% dibandingkan balok glulam Albasia seluruhnya. Namun kombinasi tersebut menurunkan daktilitas penampang I dan boks hingga -26.27% dan -17.11% dibandingkan glulam Albasia seluruhnya. Moda kegagalan dominan pada penampang persegi panjang adalah kegagalan lentur. Moda kegagalan dominan pada penampang I dan boks Albasia adalah kombinasi kegagalan lentur dan geser. Moda kegagalan dominan pada penampang I dan boks glulam kombinasi Albasia-Meranti adalah kombinasi kegagalan lentur dan geser.
PERANCANGAN MESIN EKSTRUSI UNTUK DAUR ULANG SAMPAH PLASTIK BERBENTUK SILINDER Budhi Martana; Sigit Pradana; Muhammad Arifudin Lukmana
Jurnal Poli-Teknologi Vol. 19 No. 3 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i3.3005

Abstract

Extrusion technology is one way that can be done to produce a product. The extruder machine is a tool that is quite simple but has its own uniqueness, the way this tool works is to insert raw materials which will be processed and then pushed out through a die in accordance with the desired shape. The purpose of this research is to design an extruder in order to produce a cylindrical product (filament), and to recycle waste into a product that has added value and economic value, so that it can be applied to society as an effort to reduce plastic waste. The research method used is development research with the determination of several variables, namely: control variables in the form of plastic material with the type of PET and HDPE, the independent variables are temperature and engine speed (rpm), and the dependent variable is the time needed to produce a product. The results obtained for the PET type plastic have the characteristics of fast liquid and runny, the results are discontinuous (discontinuous), brittle (brittle), for HDPE it has the characteristics of liquid and hard, continuous yield, the resulting surface looks rough with flexible plastic properties, strong and elastic, while for the mixture of PET and white HDPE, the characteristics are liquid, and continuous. This mixture of PET and HDPE has a long drying time of up to 1350 seconds.
Implementasi Algoritma Complementary Filter untuk Merancang Bangun Interaksi Manusia dan Smartphone Menggunakan Gerakan Kepala Pingky Alfa Ray Leo Lede
Jurnal Poli-Teknologi Vol. 19 No. 3 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i3.3024

Abstract

This study proposes an approach to design and build interaction systems for smartphone users with hand disabilities using the user's head movements through the implementation of the fusion complementary filter algorithm to get the angle of orientation and position of the user’s head. The main objective of this experimental research is to get the best constant function of complementary filters that have the highest accuracy result. The results of this study indicate that the fusion complementary filter algorithm can be used to measure the angle of the user's head movements using a combination of 3 sensors; namely, the accelerometer, gyroscope, and magnetometer, with the best constants function are 0.99 for the gyroscope and 0.01 for the accelerometer. Complementary filter performance results using fusion of 3 sensors to measure the user's head angle obtained from the calculation of the root mean squared error (RMSE) with an average value of 0.364 on the x-axis (roll), 0.578 on the y-axis (pitch), and 0.767 on the z-axis (yaw).
PENENTUAN FAKTOR KEAMANAN MATERIAL GANJAL KAPAL UNTUK DOK GALANGAN KAPAL Mochamad Yusuf Santoso; Kartika Indira Putri; Rina Sandora
Jurnal Poli-Teknologi Vol. 20 No. 2 (2021)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v20i2.3248

Abstract

Docks at the shipyard company have the potential danger due to failure in the ship shocks. It causes damage to the ship and accidents on ship repair and maintenance work because the entire weight of the ship fully rests on the docking blocks. One of the reasons for the failure of the docking blocks is the error in the selection of materials used, so it is not strong to support the ship hull on it. Therefore, this research was conducted to provide recommendations for docking block wood type for docks at shipyards. Recommendations are made by comparing the wood used today with the wood that has a higher strength level according to PKKI 1961 and making comparisons with SNI 7973-2013 regarding design specifications for wood construction to determine the mechanical properties of each wood. Mechanical property values are used as material properties for loading simulation using Ansys software. There are three observed parameters: von mises stress value, total deformation and safety factor. Based on the results, the strongest and the safest woods for docking blocks are Ironwood, Bangkirai wood, Meranti wood and tamarind wood, respectively.
OPTIMIZATION OF THE HYDRAULIC SYSTEM IN THE EXCAVATOR ARM SIMULATOR Abdul Azis Abdillah
Jurnal Poli-Teknologi Vol. 20 No. 2 (2021)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v20i2.3304

Abstract

Most of the heavy equipment units use a hydraulic system, even including systems that are essential for working with a heavy equipment unit. The hydraulic system is a system that utilizes a liquid medium in the form of fluid or oil to generate pressure, which is used to implement, the power train system, the disconnection system, the steering system. The working principle of hydraulics is to utilize the pressure exerted on the tool (which is used for this actuator / cylinder / tube) so that the pressure pushes the piston which is connected to the rod. The hydraulic system in this study is an arm excavator. This simulator is like a hydraulic system in general which consists of a power unit, in this simulator the power unit used is a type of electric motor that is connected to a hydraulic pump. The control unit is in the form of a control valve. The drive unit is an actuator / cylinder / tube. This simulator has been disabled for a long time due to a malfunction. Then the authors performed a simple analysis and improvements to the excavator arm simulator. So the research that is done is to do the 8 step troubleshooting method on the simulator. This step aims to facilitate the repair process in the simulator.
SISTEM AKUISISI DATA BERBASIS ARDUINO PADA REKAYASA PROTOTIPE SHELL AND TUBE HEAT EXCHANGER Haolia Rahman
Jurnal Poli-Teknologi Vol. 19 No. 3 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i3.3307

Abstract

Untuk mengetahui kinerja alat penukar kalor (APK) tipe shell and tube, salah satu metode yang dapat digunakan adalah metode log mean temperature different (LMTD). Pada metode LMTD, temperatur pada sisi masuk dan keluar shell and tube perlu di ketahui. Untuk itu, sistem data akusisi yang dibuat pada penelitian ini ditujukan untuk dapat mengukur temperatur pada titik-titik yang dibutuhkan secara real-time. Selain itu, flow meter dipasang untuk mengukur masa aliran fluida yang masuk pada sisi shell dan sisi masuk tube, sehingga perpindahan panas secara keseluruhan dari APK dapat diperoleh. Perangkat Arduino digunakan sebagai sistem data akusisi pada APK yang diobservasi. Hasil dari penelitian ini berupa prototipe sistem data akusisi untuk mengukur performa APK shell and tube.
Daftar Isi Politeknologi Vol. 19 No. 2 Mei 2020 Tim Editor Tim Editor
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.v19i2.3402

Abstract

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