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All Journal Jurnal Mechanical IJEMS (Indonesian Journal of Environmental Management and Sustainability)
Ellyanie Ellyanie
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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Analisis Tegangan Pada Mata Pahat Dalam Proses Pemesinan Bubut Menggunakan Software Autodesk Inventor 2016 Ismail Thamrin; Astuti Astuti; Ellyanie Ellyanie; Al Fiqhi Meizan Twista Herbian
JURNAL MECHANICAL Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v9.i1.201804

Abstract

Pada proses bubut, seluruh energi yang digunakan untuk pembentukan geram diubah menjadi kalor. Hal ini menyebabkan  suhu pada zona pemotongan akan meningkat. Kalor yang dibangkitkan selama proses pemesinan bergantung terutama pada jenis pahat, material benda kerja, dan parameter proses seperti kecepatan potong, kedalaman potong dan gerak makan.  Temperatur tinggi yang terdistribusi dengan baik selama proses pembubutan, memiliki pengaruh yang penting terhadap tegangan pada mata pahat. Maka dari itu perlu dilakukan analisa pengaruh sudut geram terhadap tegangan pada proses pembubutan titanium dengan cara mengkomparasi hasil teoritis dan simulasi menggunakan Autodesk Inventor 2016.Pada penelitian ini, gaya pemotongan yang digunakan adalah pemotongan orthogonal. Variasi sudut utama pemotongan  yang digunakan 5°, 10° dan 15°. Berdasarkan dari  perhitungan secara teoritis,  gaya potong maksimum (Fc) yaitu 1720 N untuk sudut geram (γ) 50, dan terjadi penurunan gaya potong setiap kenaikan sudut geram (γ).  Dari hasil simulasi yang dilakukan, tegangan maksimum terjadi pada sudut potong 15°, sebesar 1368,462 N/mm2 , terjadi kenaikan tegangan setiap kenaikan sudut geram (γ)                                                                
CFD Analysis Of Flue Gas Streamline Through Varied Of Flow Straightener Inclination Pramadhony Pramadhony; Dewi Puspitasari; Ellyanie Ellyanie; Marwani Marwani; Rizki M. R. Sihombing
Indonesian Journal of Environmental Management and Sustainability Vol. 2 No. 1 (2018): March
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (775.284 KB) | DOI: 10.26554/ijems.2018.2.1.11-14

Abstract

Air emission, generated by industrial sector, is one of the main contributors of ambient air quality degradation. In order to minimize the impact to its surrounding, the company regularly should conduct an air emission monitoring activity by measuring the hazardous compound concentration. The sample should be taken in a reference plane located two diameter from the outlet. The sampling of air emission by using isokinetic method cannot be conducted when the swirling flow is existed; the streamline is also should be uniform and vertical. Flow straightener with difference inclination angles, 0°, 15°, and 30°, are suggested to condition the streamline and fulfill the requirements. A computational simulation conditions with no flow straightener and with three flow straighteners are conducted to overview the influence of flow straightener inclination. Based on the analysis these inclinations are effectively improving the uniformity of velocity at reference plane. In other side these inclinations are causing the increasing of helicity as well as streamline inclination
Co-Authors Al Fiqhi Meizan Twista Herbian Astuti Astuti Ismail Thamrin marwani marwani Pramadhony Pramadhony Rizki M. R. Sihombing