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All Journal Jurnal Ilmiah HUBUNGAN INTERNASIONAL METAL : Jurnal Sistem Mekanik dan Termal
Muhammad Yusra
Universitas Andalas
Automotive Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Sudut Geram dan Parameter Pemesinan Terhadap Keausan Tepi Pahat High Speed Steel (HSS) pada Proses Bubut Glass Fibre Reinforce Polymer (GFRP) Muhammad Yusra Nusa; Firman Ridwan
METAL: Jurnal Sistem Mekanik dan Termal Vol 2, No 1 (2018)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (744.26 KB) | DOI: 10.25077/metal.2.1.40-46.2018

Abstract

The high rate of tool wear is an obstacle in machining of GFRP material. This research was conducted to investigate turning behavior towards the occurrence of flank wear on HSS devices by varying machining parameters such as rake angle, spindle speed and feed rate. The GFRP of workpiece was made from resin as a matrix and the glass type Chopped Strand Mat as fiber. The rack angle of tool is varied to 5º, 10º, 15º, 20º.  Taguchi method was used to analized data experiments using orthogonal array L8. The experimental data shows that the spindle speed is the most influential parameter on flank wear with a S/N ratio of 4.10, followed by the feed rate with a S/N ratio of 3.08. Increasing rake angle can reduce wear, the smallest wear value was obtained at an angle of 20º.
Persepsi Angela Merkel dan Open Door Policy dalam Krisis Pengungsi Eropa 2015 Annisa Nabilatul Khaira; Muhammad Yusra; Rifki Dermawan
Jurnal Ilmiah Hubungan Internasional Vol. 18 No. 1 (2022): Jurnal Ilmiah Hubungan Internasional
Publisher : Parahyangan Center for International Studies

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jihi.v18i1.4603.1-13

Abstract

When Europe was hit by the refugee crisis in 2015, Germany as the leader of the European Union implemented policies that contrasted markedly with those of other member countries. Through the Open Door Policy under the command of Angela Merkel, Germany voluntarily opened its borders so that refugees were able to enter its territory. Unfortunately, this policy triggered many protests and rejections from various circles. Among these were members of the general public, opposition parties, Merkel's own party, interest groups and the European Union as a regional umbrella for Germany. The determination of this policy did not involve the participation of the Bundestag (level I parliament) in a democratic manner, either. Despite the many objections that arose, Merkel remained adamant about defending and enforcing her controversial policy. This attitude reflects the existence of a separate perspective or perception that Merkel had in seeing the refugee crisis, so she established an Open Door Policy. This paper will shed light on how Angela Merkel's personal perception could have led to her choice of providing protection for refugees despite having to face various forms of resistance. By using the framework of the relationship between perception and decision-making according to Ole R. Holsti, it was found that belief and image systems influenced Angela Merkel's perception that Germany should be the main actor in responding to the refugee crisis that occurred in the European Union region and the rest of the world as well.  
Co-Authors Annisa Nabilatul Khaira Firman Ridwan Rifki Dermawan