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Aditya Rizky Dwicahya
Program Studi Teknik Lingkungan, Fakultas Teknik, Universitas Pembangunan Nasional “Veteran” Jawa Timur
Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Analisis Kekuatan Bending Akibat Variasi Arus Pengelasan SMAW Pada Sambungan Pipa Api 5L GR.B SCH 80 Aditya Rizky Dwicahya; Okik Hendriyanto Cahyonugroho
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

In this research, we use experimental research to determine the characteristics of a material, namely API 5L Grade B sch 80 pipe, using variations in welding current using SMAW (Shielded Metal Arc Welding) welding to determine the effect of variations in SMAW welding current on the value of liquid penetrant test results, radiographic test and mechanical properties of bending tests on API 5L Grade B sch 80 pipe material. It can be concluded that welding with variations in current strength of 80 A gives an average value of 396.381 MPa from the bending test results. Meanwhile, when the current variation is 100 A, it is known that the result of the current variation of 100 A is 652.315 MPa. It is known that when the amperage is varied by 120 A, the value of the bending test results is smaller than when the amperage is varied by 80 A, and when the amperage is varied by 100 A, the average value of the amperage variation by 12 A is 286.744 MPa. In conclusion, since there are no defects in this liquid penetrant test that could be dangerous or cause leakage, the welding results can be used or continued. There are deficiencies in the test results, but the NDT inspector with certification number SNS/PT/RN-23008 can still approve them
Analisis Sebaran Emisi Total Suspended Particulate Menggunakan Software Aermod di Jalan Raya Tandes Aditya Rizky Dwicahya; Okik Hendriyanto Cahyonugroho
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Increased transportation activities in this city cause air pollutant emissions, one of which is Total Suspended Particulate (TSP), which has an impact on air quality. This study aims to measure TSP concentration and map its distribution. Data on TSP concentration, air temperature, wind speed, and air humidity were collected using instruments such as High Volume Air Sampler (HVAS), hygrometer, and anemometer. TSP concentrations were modeled with AERMOD based on the obtained data and associated meteorologicalconditions. The results showed that TSP concentrations varied significantly depending on traffic volume and weather, with the highest concentration of 184.8 μg/m3 at point 1 on the first day and the lowest of 9.7 μg/m3 at point 5 on the second day. The distribution of TSP tended to the Southeast, West, and North according to the AERMOD model. Questionnaire results in the sampling areas show that there are still people who are not aware of the impact of TSP pollutants. The conclusion of this study is the presence of TSP pollutants on Tandes Highway, which is influenced by meteorological factors and traffic volume
Co-Authors Okik Hendriyanto Cahyonugroho