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Jurnal Rekayasa Mesin
Published by Universitas Sriwijaya
ISSN : 14116553     EISSN : 23387009     DOI : https://doi.org/10.36706/jrm.v21i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Rekayasa Mesin (JRM) Jurusan Teknik Mesin Universitas Sriwijaya adalah sebuah jurnal blind peer-review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang ilmu Teknik Mesin namun tak terbatas secara implisit. Semua publikasi di Jurnal Rekayasa Mesin ini bersifat akses terbuka yang memungkinkan artikel tersedia secara bebas online tanpa berlangganan apapun
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 63 Documents
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Analisis Struktur Sepeda Lipat IZI ARC 16 dengan Menggunakan Metode Elemen Hingga Zainal Abidin; Panji Janatama Aryadi
Jurnal Rekayasa Mesin Vol. 21 No. 1 (2021): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v21i1.59

Abstract

In terms of the truth of the power on the bike is very important because lately many people are using this folding bike. On this night, use element method until application is labor-intensive. Before the analysis of the meshing process on the frame. After that the analysis is nothing. In this analysis the voltage result is not the value of the yield strength value on the material. So it doesn't break the frame. In addition to voltage, there are also strains and reforms that occur in frames whose value is not too large frame undergoes elastic deformation, and the result of analysis of security value is at least 10.6. This is the power of matter smaller than the voltage that occurs. So it can be stated that the bike will be safe if enabled or times.
Pengaruh Peningkatan Efisiensi Pemasangan Heatsink pada Panel Photovoltaic Tipe Polycrystalline Charles Sjahruddin; Irwin Bizzy
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i2.62

Abstract

Photovoltaic panels are equipment that can convert solar energy into electrical energy. Theefficiency of this panel decreases as the temperature rises, so cooling media is needed to increaseits efficiency. This study uses a polycrystalline type panel with a cooling medium in the form of aheatsink that is placed behind the panel. The results showed an increase in efficiency of 3.37% withan average output power of 0.483 W. The average convection heat transfer coefficient was 4.18W/m2.K when using a heatsink and without using a heatsink was 4,31 W/m2.K.
Analisis Kekasaran Permukaan Hasil Proses Side Milling Menggunakan Artificial Neural Networks (ANN) Muhammad Yanis; Ahmad Mujaddid An-Najiy
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i2.63

Abstract

Surface roughness is one of the aberrations caused by cutting conditions in the machining process. In this test, the application of cutting fluid was carried out using the MQL (minimum quantitylubricant) method with the AISI 1045 workpiece. Experimental testing was carried out based on theCentral Composite Design with a level point adjusted to the conditions of the vertical freis machine used, with variable cutting speed (Vc), motion feed (fz) and depth of cut (a). Surface roughness prediction is done using Artificial Neural Networks method. The requirements set in ANN are a network structure with 3 inputs, n hidden layers and 1 output, feed forward back propagation network algorithms, training and learning functions with Levenberg-Marquardt and performance calculated by MSE. The results show that the effect of cutting speed on roughness is inversely proportional, the higher the cutting speed will produce a smooth roughness value and vice versa, while the effect of feeding motion and feeding depth on roughness is directly proportional, the higher the value of feeding motion and the depth of feeding, the higher the roughness value. the more rough it gets. Surface roughness prediction resulted in the lowest MSE in the 3-8-1 structural network with MSE 0.001648738 with an error prediction of 3.2415% in all training data and testing data. And the test data get a deviation value range of 0.99% to 15.199%.
Analisis Kegagalan pada Rangka Mesin Perontok Padi Kapasitas 1 Ton/Jam Menggunakan Metode Von Misses Aji Abdillah Kharisma; Muhammad Erlian Marsaoly
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i2.64

Abstract

Perontokan merupakan proses pasca musim panen padi yang sudah bisa dipanen kemudian padi yang telah layak untuk dipanen dirontokan untuk memisahkan bulir padi jeraminya. Prinsip kerja dari mesin perontok padi adalah merontokan bagian tangkai padi sampai bulir padi terlepas. Mesin perontok padi ini berkapasitas kurang lebih 1 Ton/Jam. Pada penelitian ini akan membahas tentang analisa stress dan strain serta keamanan (safety factor) rangka mesin perontok padi. Metode yang digunakan dalam penelitian ini adalah  metode perbandingan perhitungan secara aktual dan simulasi software solidwork. Perhitungan aktual dan simulasi yang dilakukan terdiri dari nilai Displacement, Von Misses Stress, Strain dan keamanan rangka berguna untuk memenuhi standar keamaan yang baik. Material rangka mesin perontok padi adalah ASTM A36. Material tersebut akan  menerima gaya pembebanan dari tekan (tegangan), perubahan bentuk deformasi atau strain. Berdasarkan hasil analisa simulasi rangka mesin perontok padi didapatkan nilai von misses 91,95 MPa dan perhitungan aktual von misses (stress) sebesar 88,72 MPa dengan persentase perbandingan hasil sebesar 3%. Pada hasil perhitungan nilai displacement (strain) secara aktual bernilai 0,23 mm dan hasil analisa simulasi sebesar 0,21 mm dengan persentase perbandingan hasil sebesar 8%, sedangkan hasil perhitungan aktual safety factor adalah 2,71 ul dan pada safety factor pada analisa simulasi software sebesar 2,72 ul dengan persentase perbandingan sebesar 3 %. Berdasarkan hasil dari perhitungan aktual dan analisa simulasi bahwa nilai safety factor diantara 1 sampai 10 dan von misses ? 200 MPa (Modulus Elasticity) material ASTM A36 yang artinya bahwa rangka pada mesin perontok padi memenuhi standar keamanan yang baik dalam perancangannya
Pengaruh Jumlah Baffle Terhadap Kinerja Alat Penukar Kalor Tipe Shell and Tube Elvine Handika Putra; Irwin Bizzy
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i2.65

Abstract

Fungsi baffle dalam penukar kalor tipe shell and tube adalah untuk meningkatkan laju perpindahan kalor dari fluida panas ke fluida dingin atau sebaliknya dan sebagai penyangga tube yang ada pada shell. Tujuan penelitian ini adalah untuk mengetahui pengaruh variasi jumlah baffle yang diperlukan dalam perhitungan kinerja dari penukar kalor tipe shell and tube. Analisis kinerja di sini terdiri dari nilai koefisien perpindahan kalor, penurunan tekanan, dan efektivitas. Hasil analisis menunjukkan bahwa bertambahnya jumlah baffle pada penukar kalor terjadi peningkatan nilai koefisien perpindahan panas sisi shell, terjadi penurunan tekanan sisi shell, dan peningkatan efektivitas pada alat penukar kalor itu sendiri.
Perancangan Heat Exchanger Tipe Shell dan Tube Secara Metoda Matematis dan Simulasi Software Aji Abdillah Kharisma
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i2.66

Abstract

Perancangan exchanger mempunyai perhitungan matematis berdasarkan perpindahan panas yang terjadi sehingga prediksi nilai matematis harus sesuai dengan teori yang sudah ada, rangkaian perhitungan heat exchanger cukup rumit mulai menentukan luas area perpindahan panas, menentukan jumlah pass dan tube yang sesuai, menentukan diameter shell, menghitung koreksi koefisien perpindahan kalor keseluruhan harus kurang dari 30%, dan menghitung over desain yang kurang dari 30%, jika nilai koreksi koefisien perpindahan kalor keseluruhan dan nilai over desain berdasarkan syarat tersebut maka desain layak dilanjutkan. Data untuk melakukan perancangan heat exchanger ditentukan melalui laju aliran massa air Panas 2 kg/s, Temperatur inlet air panas 98.8 0C, Temperatur outlet air panas 60 0C, Temperatur inlet air dingin, 32.2 0C, Temperatur outlet air dingin 68.30 0C. hasil simulasi yang dilakukan perbedaan temperatur air panas dari nilai rancangan dan nilai hasil simulasi memiliki error sebesar 23%.
Uji Sifat Mekanik Hasil Peleburan Aluminium Kaleng Minuman Bekas dengan Bahan Bakar Minyak Pelumas Bekas Diberi Perlakuan Panas dengan Dapur Listrik dan Tungku Krusibel Muhammad Nur Panghurian; Nukman Nukman
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i2.67

Abstract

Penelitian ini dilakukan untuk membandingkan sifat mekanik hasil peleburan alumunium kaleng bekas berbahan bakar minyak pelumas bekas, baik tanpa mengalami perlakuan panas maupun dengan perlakuan panas anealling. Perlakuan panas anealling dilakukan menggunakan 2 metode yaitu aneallingmenggunakan dapur listrik dan anealling menggunakan lemari pemanas yang dipasang pada tungku krusibel dengan temperatur 343 °C dan holding time selama 1 jam. Spesimen hasil peleburan dilakukan uji komposisi kimia yang bertujuan untuk mengetahui kandungan-kandungan yang terdapat di dalam spesimen tersebut. Pada pengujian kekerasan tetjadi penurunan nilai BHN untuk speimen yang diberi perlakuan panas anealling dapur listrik dan lemari pemanas masing-masing sebesar 21,2% dan 31,67%. Selain itu terjadi juga penurunan nilai tegangan untuk spesimen pengujian tarik terhadap nilai ?u sebesar 23.9% dan 9.5% dan ?f sebesar 16,34% dan 5,17% sedangkan pertambahan panjangnya naik menjadi 1,3% dan 1,467%. Spesimen yang diberi perlakuan panas anealling dapur listrik dan lemari pemanas mengalami peingkatan nilai impak sebesar 25,04% dan 30,1%. Perlakuan panas anealling yang dilakukan bertujuan untuk menghilangkan tegangan sisa yang terjadi akibat proses peleburan agar dapat mengubah sifat mekanik spesimen tersebut
Rancang Bangun dan Pengujian Anemometer Untuk Sudu Savonius Kaprawi Sahim; Sawalluddin Sawalluddin
Jurnal Rekayasa Mesin Vol. 20 No. 1 (2020): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v20i1.68

Abstract

In obtaining wind speed data, it is needed a tool that is able to capture the speed of the wind that is converted to the rotation of the shaft. The tool is called an anemometer, has a wind-driven blade principle where the blades are normally used 3 pieces or 4 blades, but in this design use 3 blades with blade diameter D = 40 mm with radio circular anemometer 180 mm. by arduino and converted through calculations that have been set on the computer using the arduin software. By conducting testing it is expected that the designed anemometer has the same wind speed (Va) value in calculating wind speed. testing by comparing the results of the standard deviation (?) of the product anemometer or design, and also the comparison of values from the results of wind speed (Va) which is tested in the laboratory of the basic phenomena of mechanical engineering with a range of wind speeds tested around 1 m / s to 10 m / s. the standard deviation (?) is obtained for the product anemometer of 3.478% and the design anemometer of 11.07% and the design anemometer has an error data on the product anemometer of 0.4%.
Pengaruh Variasi Baffle Spacing dan Flow Rate Terhadap Efektifitas Heat Exchanger Shell and Tube Menggunakan Metode NTU (Number of Transfer Unit) dan HTRI Aji Abdillah Kharisma; Wisnu Malik Pangestu
Jurnal Rekayasa Mesin Vol. 21 No. 1 (2021): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v21i1.70

Abstract

The research was conducted by redesigning the shell-and-tube MOES C heat exchanger by PT. Krakatau Steel, using the HTRI application to find the effectiveness value (E > 0.5). The flow type is counterflow, double segmental type baffles, two tube passes with water, oil fluid, and baffle spacing are 60 mm, 90 mm, and 100 mm, flow rate 5,716 kg/s, 5,781 kg/s, and 5,808 kg/s. The increase in flow rate on the Heat Exchanger results in a decrease in effectiveness, on the contrary, at the minimum flow rate in the Heat Exchanger there is an increase in effectiveness. The greater the number of baffles in the Heat Exchanger, the greater the value of the pressure drop, which results in a decrease in heat transfer at the Heat Exchanger. The higher the flowrate, the greater the heat transfer value, but also the greater the mass and the greater the value of pressure drop that occurs in the Heat Exchanger. The large number of baffles and flowrate also affects the pressure drop and heat transfer values.
Pengaruh Jenis Material Cutter Slot Drill Terhadap Hasil Regrinding dan Tool Life AGUNG DWI SAPTO; Kurnia Yogo Utomo
Jurnal Rekayasa Mesin Vol. 21 No. 1 (2021): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v21i1.71

Abstract

Damage cutting tools on CNC machines is a common problem that is often encountered in the field of machining industry. Long tool life can certainly save the expenditure of the company because minimizing the purchase of new cutting tools because of the damage, for that this research aims to help estimate the age of cutting tools on slot cutter drill short type of carbide and HSS and get an idea of how long the cutter can be used and know the impact of the regrinding process on the cutting tools. In this study used quantitative methods where research focused on the use of data analysis software computer cutting and data service and also manually calculation results presented in the form of tables and graphs. The results obtained by carbide cutters have a longer tool life of 706 minutes compared with a cutter HSS 162 minutes to achieve a degree of stroke-0.1 mm and the regrinding process leads to the reduction of feeding speed, cutting speed and performance on the cutter.

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