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Erifive Pranatal
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Jl. Arief Rahman Hakim No.100, Klampis Ngasem, Kec. Sukolilo, Kota SBY, Jawa Timur 60117
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Journal of Applied Sciences, Management and Engineering Technology (JASMET)
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : -     EISSN : 27212165     DOI : https://doi.org/10.31284/j.jasmet.2020.v1i1.704
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Journal of Applied Sciences, Management and Engineering Technology (JASMET) is an international peer-reviewed journal that was launched by LPPM ITATS. It is dedicated to provide a high-level platform in all aspect of science, management and engineering technology Scope of the journal: Engineering, Science and Management
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 104 Documents
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Numerical and Experimental Study of the Hybrid Savonius - Darrieus 3 Blade with NACA 4418 Airfoil Kusumadewi, Tri Vicca; Mikael, William; Setiyawan, Atok; Pertiwi, Fungky Dian
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i1.6037

Abstract

This study presents the design, simulation, and experimental validation of a novel hybrid Savonius-Darrieus vertical axis wind turbine (VAWT) utilizing NACA 4418 airfoil blades. The aim is to investigate the performance characteristics of the turbine under various wind conditions. The turbine design integrates Savonius and Darrieus configurations to harness wind energy efficiently. Computational Fluid Dynamics (CFD) simulations are conducted using software [mention the software] to analyze the aerodynamic behavior and predict turbine performance. The NACA 4418 airfoil profile is employed due to its favorable lift-to-drag ratio and widely used characteristics. Simulation’s results demonstrate that the optimal torque is the Darrieus blade 3 by 1.06 Nm at an azimuth angle of 75°, followed by Savonius 1 by 0.96 Nm at an azimuth angle of 285° on wind speed of 5 m/s. The turbine's power output, coefficient of power (CP), and coefficient of moment (Cm) across a range of wind speeds (3 to 5 m/s) on simulation and experimental are compared. The power output of the experimental by 1.54 watts and 13.14 watts for the simulation this also indicated that CP in the simulation was 8 times higher than the experimental. The maximum torque of 0.11 Nm in the experimental, compared to 0.36 Nm for simulation occurs the CM result will be similar. The design, configuration, and environment play a crucial role in determining the performance characteristics.
COVER, EDITORIAL BOARD, CONTENTS Team Editorial, Team Editorial
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Analysis of Groundwater Biological Parameters in Ponjong District, Gunung Kidul Regency, Special Region of Yogyakarta Sari, Avellyn Shinthya; Kusumayudha, Sari Bahagiarti; Suharsono, Suharsono; Prasetyadi, Corolus
Journal of Applied Sciences, Management and Engineering Technology Vol 4, No 2 (2023)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2023.v4i2.5034

Abstract

This study shows that the condition of the well water tested based on physical, chemical and biological parameters to determine the feasibility of the water used by the surrounding community still meets the required quality standard thresholds. Although somewhat polluted because of the mining. Underground water in the karst area of Gunungkidul Regency is safe as raw water for drinking by residents and meets the standards set by the Indonesian Ministry of Health and Government Regulation Number 82 of 2001 concerning Water Quality Management and Water Pollution Control. If used as drinking water, it still has to go through water treatment or be heated to a certain boiling point, because it contains bacteria that may be harmful to humans.
Marine Growth Rate Prediction of Wellhead Offshore Platform Kadhafi, Muammar; Herucakra, Wira; Abdullah, Sholeh Khuddin; Putra, Wahyu Suryo
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i1.6038

Abstract

Marine growth, though a straightforward issue, which is can lead the significant problems for marine structures such as wellhead jacket platforms. The survey was conducted to measure the thickness of marine growth from the splash zone downward to the seabed elevation of the jacket platform. The growth rate was calculated and predicted for 10 years from initial conditions, while the initial conditions were set 3 years after the operation started. The result indicated that the prediction thickness exceeded the allowable thickness at 5 years start from the initial condition. The results of these measurements and predictions can be used for management policy-making and followed up with an assessment of the effects of marine growth on structural performance such as seismic and structural fatigue analysis.
Implementation of the CNN Deep Learning Method in Tajong (Sarung) Samarinda Classification Muhartini, Sitti; Sunyoto, Andi; Muhammad, Alva Hendi
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 2 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i2.6406

Abstract

Samarinda sarongs are one of Indonesia's traditional fabrics that are famous for their beautiful motifs and textures. This fabric is made using traditional weaving techniques using non-machine looms (ATBMs), resulting in a unique and distinctive diversity of textures. The difference between the loom, namely the machine and the non-machine, resulting in a difference in the texture of the Samarinda sarong. This difference can be seen from the thread density, texture smoothness, and sharpness of the motif. On certain Samarinda sarong motifs that do not require special details. This study aims to develop a classification model of Samarinda sarong texture based on the loom (machine and non-machine) using the Deep Learning method. This model is expected to help, increase the selling value of Samarinda sarongs, preserve and promote traditional fabrics In this context, the choice between DenseNet121 and VGG16 can depend on user preferences or specific needs, such as computing speed or model size.
Study Of Total Suspended Solid (TSS) Reduction In Coal Mine Water Management In Block III Of PT. Antang Gunung Meratus, South Tapin District, Tapin Regency, South Kalimantan Province Azhari, Putri Sari; Rande, Shilvyanora Aprilia; Arie Adnyano, A.A. Inung
Journal of Applied Sciences, Management and Engineering Technology Vol 4, No 2 (2023)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2023.v4i2.4834

Abstract

PT. Antang Gunung Meratus is a coal mining company with an area of 22,433 Ha with open pit mining method. PT. Antang Gunung Meratus has been equipped with a wastewater treatment system using active control methods, where  the pH, Fe, Mn and Cd content of mine water is normal while  the total suspended solid (TSS) value is more than 200 ppm in a state exceeding the water quality standard limit set by South Kalimantan Governor Regulation No.36 of 2008. The purpose of this study is to determine the results of water quality before and after it is managed and what methods are used in its management and how much costs are spent in managing the mine water. The research methods used are literature study methods, research in the field, primary and secondary data collection, data processing, data analysis and conclusions. The results showed that mining water in the WWTP area had the  highest total suspended solid (TSS) content  in July 2022 reaching 4.788  mg/l, while at the outlet the total suspended solid (TSS) value was 23 mg/l, the pH value was 7.22. Iron content (Fe) of 0.04 mg / l manganese content (Mn) of 0.006 and Cadmium (Cd) content of 0.004 mg / l, the content in the outlet comes from laboratory tests and costs incurred in mine water management worth Rp. 840,854,400 as of July 2022.
Analysis of Coastal Abrasion Rate of Laha Village Ambon City using Satellite Data Samallo, Zulfikri; Warniyati, Warniyati; Sihombing, Tri Octaviani; Tutkey, Monica R
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i1.6002

Abstract

The coastline is the boundary between the sea and land. Line changes are caused by abrasion and accretion. Abrasion and accretion occur throughout the coast of Laha so that the coastline undergoes quite drastic changes. This study aims to determine how much the average rate of abrasion and coastal accretion per year and how much the average area of abrasion and accretion for 10 years of recording data on the Laha coast. This study uses the remote sensing method as a rapid study to detect the rate of abrasion and accretion on Laha beach using Landsat 8 images in 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 as primary data Calculation of shoreline changes using DSAS (digital shoreline analysis system) using the NSM (net shoreline movement) statistical method. The results of the 10-year coastal abrasion rate study occurred thoroughly on the coast of Laha beach. The highest abrasion occurred in 2018-2019 with an average value of NSM -15 cm/year while the highest accretion occurred in 2019-2020 with an average value of NSM +19.97 cm/year. Abrasion area for 10 years with an average value of NSM of -89.29 m2 / year while accretion for 10 years with an average value of NSM of +70.70 m2/ year. With the rate of abrasion that occurs, it is necessary to build coastal buildings evenly so that abrasion can be minimized.
Comparison of the Fuel Consumption Performance of Rear and Front Wheel Drive Vehicles via Road Test Ismail, Ahmad Yusuf; Akbar, Abie Anggoardo Sandewa; Firdausy, N
Journal of Applied Sciences, Management and Engineering Technology Vol 4, No 2 (2023)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2023.v4i2.4570

Abstract

This paper presents an on-site investigation of a fuel consumption comparison between a Front Wheel Drive (FWD) and Rear Wheel Drive (RWD) vehicle as those are the two most common drive type used in the commercial vehicle. The study focuses on the fuel consumption rate by comparing the average distance achieved by one liter of fuel using the same type of engine. The road test was varied from the normal highway, uphill, downhill, as well as normal city road to give more insight about the fuel consumption characteristics of each variation. From the results, it is known that each road type gives significant different characteristics to the fuel consumption. Also, the comparison between FWD and RWD regarding fuel consumption gives interesting results for further vehicle transmission developments.
Evaluation of Supplier Performance Effectiveness Measurement using the SCOR (Supply Chain Operations Reference) and ANP (Analytic Network Process) Method Approach (Case Study: Supply of Silica Powder to PT. Freeport Indonesia - Java Integrated and Industrial Port Estate (JIIPE), Gresik) Samsir, Samsir; Gunarta, I Ketut
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 2 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i2.6401

Abstract

Companies must be able to provide quality products at relatively efficient prices and distribute them quickly to survive and excel in competition. Companies need to collaborate with various parties to innovate and create competitive advantages. Suppliers are essential actors as providers of resources that companies need precisely, quickly, and efficiently, so good supply chain management is required. Companies must be able to assess supplier performance appropriately because this is the key to the success of successful SCM. The object of this research was carried out at the company PT. Freeport Indonesia. This company experienced several problems related to the instability of the supply of silica powder as a reducing agent for copper ore, such as non-fulfilment of order quantities, delays, price changes and so on. This research aims to identify appropriate criteria related to supplier performance using the SCOR (Supply Chain Operations Reference) and ANP methods in the companies studied. From the results of this research, the best supplier criteria will be obtained based on quantitatively weighted classifications.
Effect of Welding Current and Electrode Movement on HAZ Width and Hardness of TIG Welded 304 Stainless Steel Herdianto, Albertus Nova Tomy; Suheni, Suheni; Rosidah, Afira Ainur
Journal of Applied Sciences, Management and Engineering Technology Vol 5, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2024.v5i1.5884

Abstract

Tungsten Inert Gas (TIG) welding is a welding technique using an electric arc between a non-consumable tungsten electrode and a shielding gas for the heat formation. This research aims to determine the comparison of the macro structure and hardness (Vickers) of 304 stainless steel in TIG welding with spiral, zig-zag and triangular electrode movements, as well as the welding current variatons of 60, 80, and 100 A. The results show that the welding current and movement affect the hardness and HAZ width of the welded 304 stainless steel using TIG welding process. The greater current leads to higher HAZ width and hardness. Furthermore, the spiral movement provides higher hardness due to its fast movement in welding which leads a faster cooling as well. The highest HAZ width reaches the value of 2.05 mm using the 100 A welding current and triangle movement. Meanwhile, the highest hardness is obtained in the value of 450.5 kgf/mm2 in the same current and movement.

Page 7 of 11 | Total Record : 104

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