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Heri Yudiono
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengaruh variasi baja terhadap keausan end mill cutter HSS pada proses permesinan CNC milling Friska Ari Yessika; Heri Yudiono
Jurnal Teknik Mesin Indonesia Vol 15 No 2 (2020): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v15i2.163

Abstract

Kajian ini bertujuan untuk mengetahui pengaruh variasi baja terhadap keausan Cutter End Mill HSS pada proses permesinan CNC Milling. Kajian ini menggunakan desain Pre-Eksperimental. Design dengan menggunakan tipe intac-group comparison, terdapat dua kelompok pada kajian ini yaitu kelompok eksperimen dan kelompok kontrol. Variasi bahan uji yang digunakan dalam kajian ini adalah baja ST 37, baja ST 60, dan baja ST 90, sedangkan spesimen uji menggunakan end mill cutter HSS dengan diameter 12 mm. Hasil pengujian pengaruh variasi bahan terhadap keausan end mill cutter menunjukkan bahwa semakin tinggi karbon pada bahan yang digunakan, maka semakin cepat end mill cutter mengalami keausan. Dalam kajian ini ciri-ciri yang menggambarkan end mill cutter mengalami aus adalah adanya kenaikan suhu, pengurangan berat, perbedaan nilai keausan, dan jenis keausannya, terdapat juga jenis keausan yang diperoleh pada setiap spesimennya seperti flank wear, chipping, deformasi plastis, nose wear, dan cracking. Hasil tersebut menunjukkan bahwa jenis bahan mempunyai pengaruh yang sangat besar dalam menentukan jenis produksi yang akan dibuat dalam proses permesinan.
Kekuatan Bending Panel Komposit Lamina Berbasis Karung Plastik Bekas (Woven Bag) Heri Yudiono; Samsudin Anis; P Pramono
Jurnal Teknik Mesin Indonesia Vol 13 No 2 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.323 KB) | DOI: 10.36289/jtmi.v13i2.93

Abstract

Waste made from plastic, especially plastic sacks has become a national problem because of the intensity of its ever increasing use and the behaviour of the people who are less concerned about the environment, so as soon to find control efforts that are pro-environment, pro-technology and pro-economic. This research aims to analyze the bending strength, modulus of elasticity, and the degree of deflexivity of the lamina composite panels from used plastic sacks as an alternative material which is tough, lightweight, and strong. The research method used was an experimental method with the category of Pre-Experimental Designs type Static Group Comparations. The tests were conducted for the control groups and experimental groups. The experimental group is the group that is treated by varying the orientation of the used woven plastic sack fibers 0°/0°/0°/0°, 0°/+30°/0°/+30°, 0°/+45°/0°/+45°, 0°/+60°/0°/+60° and 0°/+90°/0°/+90°. The control group in this study were specimens that were not treated in the form of bumpers as product controls. The specimens of bending test are using the ASTM D790 standard. The results of the research reveal that the orientation of the fiber affects the bending strength of the lamina composite based on used plastic sacks. The highest bending strength in fiber orientation 0°/+60°/0°/+6°.. is 123.4 N/mm² and the that previous price is 24.96% higher than the bumper bending strength as a product control of 92, 6 N/mm². Debonding occurs on test specimens due to the release of bond in the contact area of the fiber-matrix caused by the shearing forces that the matrix cannot hold.
Co-Authors Friska Ari Yessika P Pramono Samsudin Anis