cover
Contact Name
Anwar Ilmar Ramadhan
Contact Email
anwar.ilmar@ftumj.ac.id
Phone
-
Journal Mail Official
jurnalteknologi@ftumj.ac.id
Editorial Address
-
Location
Kota adm. jakarta selatan,
Dki jakarta
INDONESIA
Jurnal Teknologi
ISSN : 20851669     EISSN : 24600288     DOI : -
This journal is a scientific journal to develop knowledge in the field of Engineering & Technology. Editors invite professionals from education and researcher to write about the progress of science in the field of Engineering & Technology. The journal is published 2 (two) times in 1 year.
Arjuna Subject : -
Articles 13 Documents
Search results for , issue "Vol 13, No 1 (2021): Jurnal Teknologi" : 13 Documents clear
PENGELOMPOKKAN DAERAH BERDASARKAN KETERSEDIAAN MASJID MUHAMMADIYAH DENGAN ALGORITME K-MEANS Vega Purwayoga; Budi Susanto
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.75-80

Abstract

The importance of the mosque's role in daily life as it is known is for worship facilities. However, the availability of mosques in an area is not yet fully distributed, even there are still areas that do not yet have a mosque. The financial surplus in the Muhammadiyah organization has not been put to good use. One solution is to map and group an area based on the number of mosques in the area. The grouping of regions in this study uses the K-Means algorithm. Characteristics for the process of grouping regions are the name of the district, the name of the sub-district and the number of mosques in a sub-district or branch. The study area in this research is West Java Province. Determination of K or number of clusters in this study is 3. The number of clusters is determined based on 3 categories, namely small, medium and large. There are 4 regions that are categorized with a large number of mosques, 21 regions with moderate numbers and 78 for regions that are classified as few. Evaluation of the results of the grouping showed good results with an SSE value of 90.05%.
PENGARUH MEDAN MAGNET MENGINDUKSI BUSUR PADA PENGELASAN AUTOGENOUS TUNGSTEN INERT GAS SAMBUNGAN TUMPUL BAJA TAHAN KARAT 304 Haikal Haikal; Moch. Chamim; Ario Sunar Baskoro; Isnarno Isnarno; Apri Wiyono
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.89-100

Abstract

Dalam studi ini, penelitian mengenai penggunaan metode External Magnetic Field - Tungsten Inert Gas pada aplikasi sambungan tumpul dilakukan untuk mengetahui pengaruh dari pemampatan busur las terhadap kualitas hasil sambungan tumpul pelat tipis SS 304. Proses pengelasan ini dilakukan tanpa menggunakan logam pengisi tambahan (autogenous weld). Pada penelitian ini medan magnet luar ditimbulkan dengan meletakkan solenoid magnetik di sekeliling obor las TIG. Pengaktifkan medan elektromagnetik ini dilakukan secara dinamis dengan menggunakan mikrokontroler. Parameter pengelasan yang digunakan yaitu arus pengelasan 100; 105; 110 A dan kecepatan pengelasan 1,6; 1,8; 2,05 mm/s. Hasil penelitian ini menunjukkan bahwa pengelasan EMF-TIG dapat menghasilkan lebar manik yang lebih seragam di sepanjang jalur las dengan standar deviasi sebesar 0,08 dibandingkan dengan las TIG konvensional sebesar 0,12. Peningkatan kecepatan las sebesar 2,05 mm/s menyebabkan tidak berpengaruhnya penambahan medan magnet luar terhadap lebar manik las. Parameter arus 105 A dengan kecepatan 1,6; 1,8; 2,05 mm/s menghasilkan pemampatan lebar manik atas berturut- turut sebesar 0,87; 0,61; 0,1 mm. Parameter pengelasan dengan arus 105 A dan kecepatan las 1,6 mm/s memiliki efek pemampatan manik atas yang lebih besar yaitu sebesar 0,84 mm dibandingkan arus 110 A yaitu 0,38 mm.
PERANCANGAN ALAT BANTU KERJA DENGAN MENGGUNAKAN METODE ANTROPOMETRI DAN MATERIAL SELECTION PADA INDUSTRI SEPATU Ratna Dewi Anjani; Asep Erik Nugraha; Rianita Puspa Sari; Deri Teguh Santoso
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.15-24

Abstract

MSMEs of shoes and sandals producers in Cibaduyut centers in the process of work that is carried out continuously, are known to have a high enough risk, namely in the process of installing sole. The sole installation process in the Home Industry is still using modest work facilities. Besides this sole installation is often done not on the table but on the thigh of the worker, this is very dangerous for the worker because he has a high enough risk of accidents, so that workers become uncomfortable at work. The purpose of this research is to design a working aid in the form of a workbench at the sole of shoe installation station with material selection so that the worker's body position becomes safer, more comfortable and healthier so as to reduce the risk of work accidents due to unfavorable work positions and will increase work productivity. The method used in this study, is an anthropometric method to measure the level of risk of danger from the worker's posture that is using the RULA (Rapid Upper Limb Assessment) method. This calculation is only done at the sole station. Furthermore, using the results of the RULA method, a working tool design in the form of a sole of shoe mounting table can be designed using an appropriate software based on raw material selection, as well as the principles of mechanics and ergonomics.
SINTESIS BIODIESEL DARI MINYAK KEDELAI MELALUI REAKSI TRANSESTERIFIKASI DENGAN KATALIS CaO/NaOH Syarifuddin Oko; Mustafa Mustafa; Andri Kurniawan; Danu Willain
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.1-6

Abstract

Biodiesel is an alternative fuel produced from vegetable oils such as soybean oil by the method of transesterification with the help of catalysts. This research uses a heterogeneous catalyst, CaO which is derived from an eggshell through a calcination process is impregnated with NaOH so that the CaO cavity can be filled by Na ions in order to increase the alkaline nature of the catalyst. The increase in biodiesel yield can be done by varying the catalyst concentration of CaO/NaOH and mole ratio of soybean oil / methanol. CaO catalyst obtained from calcination of chicken eggshell was impregnated with 5% NaOH (w/v) as much as 50 ml into 50 g of CaO gradually, stirred while accompanied by heating, and continued calcination at 300 ℃ for 3 hours. Biodiesel synthesis was carried out by esterification and transesterification using methanol, biodiesel synthesis was done by varying the mole ratio of soybean oil with methanol 1: 6; 1: 9; 1:12 and catalyst concentration 0.5; 1 and 1.5% at 60-65°C for 3 hours. The best result was obtained with a yield of 86.7860% in the mole ratio of oil with methanol 1:12 with a catalyst concentration of 1% based on oil weight, density of 0.8899 gram / ml, viscosity of 3.5208 Cst, acid number of 0.33 mg KOH/g max and water content of 0.0095% and this is in accordance with SNI 7182: 2015 standards.
ANALISIS KINERJA REFUSE DERIVED FUEL (RDF) DARI SAMPAH ORGANIK DAN NON ORGANIK DENGAN PENDEKATAN SIMULASI SOFTWARE Eka Maulana; Agri Suwandi; Dwi Rahmalina; La Ode Mohammad Firman; Budhi M. Suyitno; Dhidik Mahandika
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.109-114

Abstract

Penumpukan sampah di Kabupaten Tegal terus meningkat setiap tahunnya sehingga TPA Panujah idak sanggup lagi menampung seluruh sampah di Kabupaten Tegal dan dari data Badan Pusat Statistik didapatkan produksi sampah Kabupaten Tegal sebesar 676,5 ton/hari hanya bisa terangkut 41% atau 282,75 ton/hari saja. Oleh karena itu diperlukan pengolahan sampah terpadu dengan memanfaatkan sampah perkotaan, salah satunya dengan teknologi pirolisis yang dapat mengkonversi sampah plastik menjadi bahan bakar minyak. Sampah di Kabupaten Tegal terdiri 17,6%; kayu 3%; kain 1,93%; karet/kulit 1,55%; plastik 30,25%; metal/logam 2,4%; gelas/kaca 1,06%; organik 38,46%; dan sampah lain-lain 2,75%. Sampah kain, kayu, karet/kulit, kertas dapat berpotensi menjadi Refuse Derived Fuel (RDF) yang digunakan untuk bahan bakar alat pirolisis. Berdasarkan permasalah tersebut, maka dilakukan penelitian tentang RDF. Tulisan ini membahas tentang analisis kinerja RDF dari sampah organik dan non organik menggunakan metode pendekatan simulasi software. Hasil simulasi yang dilakukan bahwa, bahan baku RDF dengan kayu, kain, karet/kulit, dan kertas menghasilkan nilai kalor yang lebih tinggi, laju aliran panas yang lebih cepat serta distribusi temperatur yang lebih merata dari RDF dengan nilai kalor perhitungan teroritis.
PERANCANGAN DAN ANALISIS STATIS BAN TANPA UDARA (AIRLESS TIRE) UNTUK UKURAN 165/60 R12 Sandya Gilang Samudra; Mohamad Yamin
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.43-54

Abstract

Electric cars have large torque from the start driven or acceleration. The use of conventional tires on electric cars can accelerate tire surface wear. Airless tires can be applied to electric cars, such as those being developed by the Bridgestone and Micheline tire companies. This research was conducted to determine, predict stress, displacement, strain and safety factor values and evaluate the design results through FEA simulations of the airless tire model. The contribution to be achieved in this research is to redesign to improve the stress, displacement, strain and safety factor of the airless tire model that has been previously studied. In this study, airless tire planned with size 165/60 R12 refers to the ETRTO standard. The airless tire model is visualized using the AutoCAD and CATIA software. The FEA (Finite Element Analysis) simulation is done with SOLIDWORKS. The honeycomb structure uses polyurethane as the main honeycomb component suitable for pneumatic tire replacement. The 4 planned honeycomb models show better stress, displacement, strain and safety factors compared to the comparative airless tire model previously examined.
PEMODELAN MENGGUNAKAN STRUCTURAL EQUATION MODELING (SEM) UNTUK MENGETAHUI PENGARUH KUALITAS LAYANAN DAN KEUNGGULAN PRODUK TERHADAP KEPUASAN DAN KEPERCAYAAN SERTA LOYALITAS PELANGGAN Heri Irawan; M. Thaib Hasan
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.7-14

Abstract

The purpose of this study is to examine the effect of service quality, product superiority on customer satisfaction and customer trust on the effect on increasing customer loyalty. Using these variables, which are caused by the results of research before Parasuraman, Zeithaml and Berry, (1985; 1988; 1990 and 1994); Fornell, (1992); Anderson et al., (1994); and Thamrin, (2003), found a direct influence of service quality and product superiority on customer satisfaction and customer trust in the effect of increasing customer loyalty. The use of these variables is able to solve problems that arise in UNSAM, for which the customer is not satisfied. The sample of this study were 100 UNSAM customers. Structural Equation Modeling (SEM) is run by AMOS 16 software for data analysis. The analysis shows that service quality and product excellence have a significant positive effect on customer satisfaction and customer trust. customer satisfaction has a significant positive effect on repurchases. These empirical results indicate that to increase customer loyalty as a cause of customer dissatisfaction by UNSAM must focus on factors such as: service quality, product excellence, customer satisfaction and customer trust due to factors that have proven to have an influence on the level of customer loyalty. The theoretical implications and suggestions for future research have been outlined at the end of this study.
PENGEMBANGAN STIRLING ENGINE TIPE PISTON BEBAS UNTUK APLIKASI CONCENTRATED SOLAR POWER (CSP) Dwi Rahmalina; I Gede Eka Lesmana; Agri Suwandi; Reza A. Rahman; Fikhi S. Ramadhan; Kevin A. Sugiyanto
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.101-108

Abstract

Mesin stirling merupakan mesin kalor yang mempunyai cara kerja mengkompresi dan mengekspansi fluida pada suhu yang berbeda yang umumnya menyebabkan terjadinya perubahan energi panas menjadi energi mekanik. Penelitian ini bertujuan untuk mengetahui nilai efisiensi thermal pada mesin stirling, efektivitas pada regenerator, laju perpindahan panas pada heater, kerugian panas yang terjadi pada regenerator, desain rancangan alat mesin stirling serta simulasi dari heater dan regenerator mesin stirling tipe beta yang menggunakan piston bebas. Simulasi dilakukan menggunakan software Ansys pada heater dan regenerator yang terkena paparan fluida cair (Therminol VP-1) dan gas (Helium). Didapatkan nilai dari perhitungan simulasi untuk laju perpindahan panasnya pada heater yakni 216,22 Watt, kerugian panas pada regeneratornya yakni 131,83 Joule, efektivitas dan efisiensinya yaitu 6,1% dan 40%. Metode yang digunakan untuk perancangan mesin stirling tipe free piston ini yaitu metode Pahl & Beitz, dimana metode perancangan ini dapat melihat kebutuhan industri saat ini, dengan perancangan yang dilakukan secara efektif dapat meningkatkan kreatifitas dan metode ini banyak digunakan pada skala industri.
RANCANG ULANG DESAIN IMPELLER KIPAS SENTRIFUGAL SISTEM PENDINGIN MESIN SEPEDA MOTOR SKUTIK DENGAN METODE REVERSE ENGINEERING Muhamad Dewangga; Mohamad Yamin
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.63-74

Abstract

Kipas jenis sentrifugal telah banyak digunakan sebagai sistem pendinginan mesin pada sepeda motor jenis skutik. Salah satu parameter yang menunjukkan kinerja dari kipas sentrifugal dalam mengatasi panas kerja mesin adalah besar volumetrik udara yang dihasilkan. Volumetrik udara yang dihasilkan oleh kipas sentrifugal yang telah digunakan pada sepeda motor jenis skutik masih dapat ditingkatkan dengan cara merancang ulang dengan mengubah desain sudu, jumlah keseluruhan sudu dan sudut inlet impeller. Metode reverse engineering diterapkan untuk mendapatkan desain referensi berupa data geometri serta dimensi dari part impeller melalui teknik non-contact laser scanning. Metode simulasi analisis computational fluid dynamics (CFD) juga diterapkan untuk mempelajari kinerja dari masing-masing desain impeller. Hasil simulasi analisis CFD menunjukkan bahwa keseluruhan desain hasil rancang ulang jenis sudu forward curved menghasilkan volumetrik udara yang lebih besar, khususnya dengan sudut sudu inlet 50° dan jumlah sudu 20  18,85% lebih besar dari desain impeller referensi dengan jenis backward curved.
KARBON AKTIF AMPAS TEBU SEBAGAI ADSORBEN PENURUN KADAR BESI DAN MANGAN LIMBAH AIR ASAM TAMBANG Azwardi Imani; Tatan Sukwika; Laila Febrina
Jurnal Teknologi Vol 13, No 1 (2021): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.13.1.33-42

Abstract

Bagasse contains cellulose that can be used as raw material to activated carbon. Acid mine drainage has high levels of iron and manganese so bagasse activated carbon is used as an adsorbent for reducing iron and manganese levels in acid mine drainage. Bagasse was converted into activated carbon by dehydration, carbonization, and activation processes. Then activated carbon was tested for weight quality, optimum contact time, and effectiveness for reducing iron and manganese levels in acid mine drainage. The results of the quality test of activated carbon have met the standards required by SNI No. 06-3730-1995. The optimum weight of activated carbon is 3 grams with a contact time of 60 minutes. Iron content obtained at 4 mg / L with a removal percentage of 79.65% and Manganese content obtained at 4.12 mg / L with a removal percentage of 60.00% in acid mine drainage. The value of Manganese content still does not meet the quality standard set by the Decree of the State Minister for Environment No. 113 of 2003. For future studies can make a higher variation in the weight of activated carbon bagasse.

Page 1 of 2 | Total Record : 13