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All Journal Traksi : Majalah Ilmiah Teknik Mesin Jurnal UNITEK
Boni Sena
Universitas Singaperbangsa Karawang
Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering

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ESTIMATED TIME FOR CUTTING STEEL PROFILES USING A BANDSAW MACHINE IN THE REFINERY DEVELOPMENT MASTER PLAN FABRICATION PROCESS Abthal Mahdi; Deri Teguh Santoso; Iwan Nugraha Gusniar; Boni Sena
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.215-227

Abstract

Refinery Development Master Plan (RDMP) is a facility development project to increase the capacity of oil refineries, one of which is by building Pipe Rack. When making Pipe Rack with steel structure, time estimation is needed so that the fabrication process flow can run according to the planned time. One of the fabrication processes is the process of cutting profile steel using a Bandsaw machine. The estimated time of cutting profiled steel using a Bandsaw machine can be determined by the values that affect the cutting process so that initial data such as the value of cutting speed, feeding motion, sawblade type, and the type and dimensions of profiled steel to be cut are required. After knowing the initial data, the calculation of the estimated cutting time can be known with several equations. In the initial data, the feed motion is 5 mm / rotation with a sawblade length of 7600 mm and the dimensions of the profile steel to be cut are 400x200 mm. The machining time is 21.14 minutes with a cutting speed of 15,099.34 mm / minute. After obtaining the cutting speed value on the bandsaw machine, the estimated machining time of several variations of profile steel dimensions and different bandsaw machine feed motions can be determined. From the simulation results of several variation values of cutting speed and feeding motion, the longest cutting time is 21.28 minutes with a cutting speed of 15000 mm/minute and 47 minutes with a feeding motion of 2 mm/rotation. Meanwhile, the fastest cutting time is 10.64 minutes with a cutting speed of 30000 mm/min and 10.43 minutes with a feeding motion of 9 mm/rotation.
Peran Infrastruktur Hijau Perkotaan dalam Meningkatkan Kualitas Udara di Jakarta Muhammad Lukman Baihaqi Alfakihuddin; Asmuni Hasyim; Arlis Dewi Kuraesin; Boni Sena; Louise Elizabeth Radjawane
JURNAL UNITEK Vol. 17 No. 1 (2024): Januari - Juni
Publisher : Sekolah Tinggi Teknologi Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52072/unitek.v17i1.776

Abstract

Tujuan dari penelitian ini adalah untuk menyoroti peran infrastruktur hijau perkotaan dalam mengurangi polusi udara yang berbahaya bagi kesehatan manusia dan dengan demikian meningkatkan kualitas udara di Jakarta. Metode penelitian ini adalah pengumpulan data, pengamatan penginderaan jauh, dan analisis data dengan memanfaatkan berbagai informasi yang disediakan oleh Badan Meteorologi, Klimatologi dan Geofisika (BMKG) dan beberapa situs terpercaya yang menyediakan informasi yang diperlukan terkait polusi udara di Jakarta. Pengamatan di Jakarta di lakukan pada dua puluh titik. Sedangkan pengamatan di kota Bogor di lakukan pada dua titik. Data yang diperoleh dari pengamatan jarak jauh di dua puluh lokasi di Jakarta menyebutkan, kualitas udara di Jakarta rata-rata berada pada level tidak sehat. Sedangkan data yang diperoleh berdasarkan hasil pengamatan di kota Bogor menunjukkan bahwa kualitas udara di Bogor masih sehat. Rata-rata kualitas udara di Jakarta adalah 131. Sedangkan rata-rata Rata-rata kualitas udara di Bogor adalah 31.
Co-Authors Abthal Mahdi Arlis Dewi Kuraesin Deri Teguh Santoso Iwan Nugraha Gusniar Muhammad Asmuni Hasyim Muhammad Lukman Baihaqi Alfakihuddin Radjawane, Louise Elizabeth