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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY
Darianto Darianto
Mechanical Engineering Dept., Engineering Faculty, University of Medan Area
Energy Industrial & Manufacturing Engineering Mechanical Engineering

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Numerical Study on Plate Holders Pipe Recovery Boiler Superheater Amrinsyah Amrinsyah; amir syam; Darianto Darianto; zulfikar zulfikar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 2, No 1 (2018): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v2i1.1655

Abstract

The important part which has a function as supporting of superheater header on the boiler recovery type (RB) is a couple of support plate which is hanged on the hanger rod. This part is very difficult to analyze by experimental because there are in a tight insulation and heavy duty condition. This research aim to obtain the stress distribution that happened on the plate as the effect of static load in simulation mode. The model is designed base on the dimension of real support plate size 400x200 mm and thickness 15 mm. It is use the FEM software of Ansys version 5.4. The theory of failure analysis of Tresca and von Mises become the reference for materials strength. The area contact theory of b represents the reference to determine the length of stress area along curve of both contact area. The material that is used is from steel ASTM A514 with the yield strength 690 MPa. The Result is stress distribution along curve and also critical point which has possibility failure occurs on the support plate. The analysis result could be a reference for the development of the further construction.
Analisa Faktor-Faktor yang Mempengaruhi Proses Pengasapan Pada Mesin Pengasapan Ikan Lele Darianto Darianto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 2, No 2 (2018): Edisi Desember
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v2i2.2154

Abstract

Indonesia kaya akan sumber hayati, salah satunya adalah gudang sumber penghasil protein hewani khususnya ikan. Pengasapan adalah salah satunya cara pengawetan ikan yang dapat dilakukan dengan peralatan yang sederhana dan mudah didapat serta harganya murah. Tujuan penelitian ini ialah analisa nilai kalor yang dibutuhkan, produktivitas asap, aliran pada lemari pengasapan, dan kadar air pada ikan. Berat ikan yang diasapi dalam penelitian ini adalah 500 kg. Bahan bakar yang digunakan untuk pengasapan ikan adalah kayu jati, dimana kayu ini dipilih sebagai bahan bakar karena sifatnya yang keras, sehingga dapat menghasilkan asap yang tebal dan mengeluarkan aroma yang cukup baik untuk ikan asap. Berdasarkan hasil analisa, besar kalor yang dibutuhkan dalam satu siklus proses pengasapan ikan ialah 375.000 kkal. Bahan bakar yang digunakan sebelum finishing pengasapan yaitu sebanyak 120 kg dan untuk finishing pengasapan menggunakan bahan bakar sebanyak 30 kg. Bilangan Re dari proses pengasapan ialah 12450 atau lebih besar dari 4000. Oleh karena itu, jenis aliran yang mengalir pada dapur pengasapan ialah jenis turbulen. Kadar air yang masih tersisa dalam produk ialah 13,4 %. Hal ini masih dibawah batas ambang yang dipersayaratkan oleh SNI, yaitu maksimal 60%.
Analisa Pengaruh Waktu Dan Turbulensi Asap Pada Mesin Pengering Ikan Lele Darianto Darianto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 3, No 2 (2019): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v3i2.3029

Abstract

Indonesia kaya akan sumber hayati, salah satunya adalah gudang sumber penghasil protein hewani khususnya ikan. Pengasapan adalah salah satunya cara pengawetan ikan yang dapat dilakukan dengan peralatan yang sederhana dan mudah didapat serta harganya murah.Tujuan penelitian ini adalah mendapatkan waktu ideal utuk proses pengasapan ikan dengan suhu 60ºC sampai dngan 70ºC waktu pengasapan 8 jam.Berat ikan yang diasapi dalam penelitian ini adalah 500 kg.Dan bahan bakar yang digunakan untuk pengasapan ikan adalah kayu jati.Dimana kayu ini dipilih sebagai bahan bakar karena sifatnya yang keras, sehingga dapat menghasilkan asap yang tebal dan mengeluarkan aroma yang cukup baik untuk ikan asap.Berdasarkan hasil pengujian dan perhitungan serta analisa data dapat diperoleh bahwa waktu pengasapan ideal yang dibutuhkan untuk mengasapi atau mengeringkan ikan lele sale adalah 8 jam.Dimana dengan menggunakan waktu 8 jam dapat menurunkan kadar air pada ikan sebesar dengan 70 %.Penurunan kadar air sebesar 70 % dipengaruhi oleh waktu pengasapan dan pemilihan bahan bakar yang bersifat keras dan pengkontrolan suhu pengasapan yang dilakukan secara rutin.
Numerical Simulation on Mechanical Strength of a Wooden Golf Stick Darianto Darianto; Bobby Umroh; Amrinsyah Amrinsyah; zulfikar zulfikar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 2, No 1 (2018): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v2i1.1652

Abstract

In general, golf players only know the techniques used in Golf games, but do not know the golf sticks response that occurs when the ball is hit. Referred to as response is the stress and strain that arises from the impact load that occurs when the hitting member touches the ball. The objectives of this research are: (a) to analyze golf sticks response when impact occurs, and (2) to know the stress distribution that occurs in golf sticks. The golf stick design in this study uses the autodesk inventor software. The material used is Titanium for head stick and Graphite for stick rod. The basic principle of this study is based on simple swing pendulum method. The variables that will be used for simulation are: swing speed, that is difference between start and end speed, that is Δv = 272,2 m / s, impact time, which is the time when the ball touches the batter Δt = 0.0005 seconds, the volume of the head of the stick Vo = 96,727 mm3, the cross-sectional area of the stick A = 63,504 mm2, the head mass of the sticks ρ = 4620 kg / m3, and the modulus of titanium elasticity 9.6 e +10 Pa. From the simulation result on the surface of the golf club hitter is obtained as follows: σmax = 2.1231e +10 Pa at 1.231e-06 s, emax = 0.22115 m / m at 1.231e-06 s, and the maximum stress and strain is located in the area the connection between the stick and the head of the stick.
Study on the CBN Tool Wear Mechanism on Dry High-Rate Turning Process for AISI 4140 Budi Harto; Bobby Umroh; Darianto Darianto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 2, No 1 (2018): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v2i1.1654

Abstract

This study aims to investigate tools wear and wear mechanisms when machining high-rate extreme minimum lathe AISI 4140 material in hard and dry cutting conditions. Cutting tool made from CBN CB7015 Sandvik Coromant production is used for turning of AISI 4140 steel in order to obtain the failure mode of tool and the wear mechanism of the cutting tool. The machining process is carried out under dry cutting conditions with variations of high velocity Vc, feeding rate f, and a cutting depth a at minimum rate conditions. The wear growth curve obtained shows that the CBN tool undergoes three phases: the initial phase, the gradual phase, and the abrupt phase. From the results of the study found that the failure modes that occur are flank wear, crater wear, flaking, chipping, and fracturing catastrophic failure. The wear mechanism that occurs in outline is caused by abrasive, adhesive, and diffusion processes. While the cracks and fractures that occur due to a combination of impact load and thermal shock
Co-Authors amir syam Amrinsyah Amrinsyah Bobby Umroh Budi Harto zulfikar zulfikar