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All Journal Machine : Jurnal Teknik Mesin Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Asep, Muhammad
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Engineering Mechanical Engineering Transportation

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ANALISIS KEMACETAN SIMPANG TAK BERSINYAL JALAN PADAT KARYA – JALAN SUMATERA KOTA PRABUMULIH MENGGUNAKAN PKJI 2023 Sarwandy, M. Hijrah Agung; Royan, Noto; Asep, Muhammad
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 9, No 1 (2024): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.v9i1.8479

Abstract

There will undoubtedly be heavy traffic in this location, especially at the intersection of Jalan Padat Karya, as Prabumulih is one of the cross-Sumatra cities with heavy traffic. The second economic hub of Prabumulih City is the Karya Intensive Road. When primary data collecting takes place in the field, descriptive and quantitative research methodology is employed. 7 days a week, Monday through Sunday, from 07.00 to 18.00. Road width measurements are made on the spot at each approach using a measuring tool. Following the collection of all primary and secondary data, analysis will be conducted utilizing PTV Vissim Version Student for traffic modeling and the 2023 PKJI Book. Intersection performance analysis using PKJI 2023 produces results traffic flow is 836.2 pcu/hour, free flow speed is 43.70 km/hour, capacity of 1468 pcu/hour, degree of saturation of 0.85. Based on the results above, the service level flow section is D. The intersection model after being given a signal changes if using APILL with 2 phases because of the level of service that occurs changed to level A.
PENGARUH VARIASI TEKANAN KOMPAKSI PANAS TERHADAP DENSITAS DAN KEKERASAN AMC DIPERKUAT SiO2 Asep, Muhammad; ., Sugiyarto; ., Somawardi; Rusdy, Achmad; Sukanto, Sukanto
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3606

Abstract

Research on aluminum metal matrix composites reinforced with ceramics using powder metallurgy methods has recently been increasingly in demand to be developed. The goals of this study determined the effect of differences in compaction pressure on the density and hardness properties of the resulting composite. The research method used of is following the stages of the powder metallurgy process, which includes material preparation, mixing and compaction. The mixing of the composite constituent powders was carried out using the mechanical alloying method using a horizontal ball mill for 4 hours. While the hot compaction method used is two-way compression compaction, using a hydraulic pump. The matrix material used is recycled aluminum powder, and the reinforcing material is powder from tin mine tailing silica sand. The hot compaction process was carried out at 500 0C and held for 15 minutes. Two-way compacting pressure variations used 4400 Psi, 4500 Psi and 4600 Psi. Density testing refers to Archimedes with the ASTM B962-15 standard. Meanwhile, the hardness test used the Rockwell hardness testing machine, referring to the ASTM E18-15 standard. The results of the density test and hardness test showed a tendency for the value to increase with increasing compaction pressure applied. The highest density was 2.147 g/cm3 for a sample with a compaction of 4,600 Psi, with the highest hardness value being 53,11 HRB. Based on micro-photographs, it shows that the interlocking mechanical bonds at lower compaction pressures tend to be weak, fractures at the grain boundaries are clearly visible and the pattern of damage tends to show brittle/brittle fractures.
Co-Authors ., Somawardi ., Sugiyarto Royan, Noto Rusdy, Achmad Sarwandy, MH Agung Sukanto Sukanto