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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Ilmiah Dan Karya Mahasiswa
Muhammad Zaky Mubarok
Unknown Affiliation
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Transportation

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KARAKTERISTIK BAJA ST 41 HASIL PROSES HOT EQUAL CHANNEL ANGULAR PRESSING (HECAP) Slamet Wiyono; Anistasia Milandia; Muhammad Zaky Mubarok
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume II Nomor 1, April 2016
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.196 KB) | DOI: 10.36055/fwl.v0i1.722

Abstract

Proses ECAP merupakan salah satu proses perlakuan mekanik yang mampu menghasilkan butir material yang sangat halus (ultrafine grained). Baja karbon rendah dengan kandungan 0.16% C berdiameter 11mm dan panjang 65mm diberikan perlakuan mekanik melalui proses ECAP menggunakan cetakan yang memiliki sudut pada sisi dalam, θ = 1200 dan sudut sisi luar, Ψ = 70. Variabel prosesnya adalah jumlah laluan deformasi tanpa mengubah rute setiap laluannya. Dampak dari proses terhadap sampel ditinjau melalui uji kekerasan, densitas, porositas, dan metalografi. Sedangkan untuk mengetahui kekuatan sampel dilakukan dengan pendekatan persamaan Hall-Petch dimana besar butir yang terbentuk diukur menggunakan software Image-J. Hasil pengujian pada sampel menunjukkan adanya peningkatan densitas, penurunan porositas, dan penghalusan butir pada sisi sampel seiring peningkatan jumlal tahapan (laluan) deformasi yang menunjukan peningkatan kekuatan dari baja karbon rendah ST 41.
Analisis Beban Kerja Fisik Dan Mental Terhadap Rider Grab Menggunakan Metode Cardiovascular Load (CVL) Dan Subjective Workload Assesment Technique (SWAT) (Studi Kasus: Rider Grab Domisili Kelurahan Balas Klumprik Kecamatan Wiyung) Muhammad Zaky Mubarok; Rusindiyanto Rusindiyanto
Jurnal Ilmiah Dan Karya Mahasiswa Vol. 1 No. 3 (2023): JUNI : JURNAL ILMIAH DAN KARYA MAHASISWA
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jikma.v1i3.328

Abstract

Online motorcycle taxis are a mode of transportation that is widely used today. Online motorbike taxis are very quickly accepted by the public because of the ease of ordering and are application-based which can be easily downloaded by smartphone users on both Android and iOS systems. Thanks to online motorcycle taxis, passengers no longer need to wait on the side of the road to be picked up. In addition, passengers do not have to participate in negotiations, because the price has been determined per kilometer by the application system. The presence of online motorcycle taxis also adds jobs for the people of Indonesia.
Co-Authors Anistasia Milandia Rusindiyanto Slamet Wiyono