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All Journal Jurnal Ilmiah Giga JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Faktor Exacta Spektra: Jurnal Fisika dan Aplikasinya SAP (Susunan Artikel Pendidikan) Navigation Physics : Journal of Physics Education Radial : Jurnal Ilmiah Sains Dan Rekayasa
Erna Kusuma Wati
Universitas Nasional
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Journal : Faktor Exacta

 1 
EVALUASI KETERSEDIAAN AIR PERMUKAAN PADA SAWAH IRIGAS DI KECAMATAN WERU KABUPATEN SUKOHARJO Erna Kusuma Wati
Faktor Exacta Vol 13, No 1 (2020)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v13i1.5401

Abstract

Abstrak. Kecamatan Weru, Kabupaten Sukoharjo memiliki lebih dari 68% lahan sawah irigasi, sehingga kebutuhan air untuk tanaman perlu diperhatikan. Penelitian ini dilakukan guna mengetahui jumlah air yang tersedia pada daerah tersebut dapat mencukupi kebutuhan air. Evaluasi tersebut dapat diketahui dengan melakukan analisis terhadap data curah hujan, evapotranspirasi, Water Holding Capacity (WHC) dan ketersediaan air. Analisis ketersedian air menggunakan metode yang dikembangan oleh Thornthwaite dan Matter, dan untuk analisis kebutuhan air menggunakan  data CWR, FWR, dan PWR. Berdasarkan hasil analisis yang dilakukan jumlah ketersediaan air permukaan di Kecamatan Weru Kabupaten Sukoharjo adalah sebesar 25.880.450 m3/tahun, dengan kebutuhan air untuk areal irigasi di Kecamatan Weru Kabupaten Sukoharjo  sebesar 48.912.679,06 m3/tahun Kata Kunci: ketersediaan air, irigasi, Thornthwaite dan Matter
ANALISIS GROUND VIBRATION DENGAN METODE PEAK PARTICLE VELOCITY (PPV) Hari Hadi S; Erna Kusuma Wati; Tomas Kristiono
Faktor Exacta Vol 14, No 1 (2021)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v14i1.7833

Abstract

Measurement of Peak Particle Velocity (PPV) mm / sec in the Sabo dam construction project was carried out using seismic accelerometers. This study is to determine the value of PPV produced by construction equipment and then compared with the BS 6472-2: 2008 standard. The measurement method is carried out based on the applicable rules. PPV measurement results produced by each machine are different. In heavy equipment dump trucks, excavators, and front end loaders show PPV values at distances of 50 m, 100 m, 150 m and 200 m under safe conditions referring to the standard which is still in the range of 0.2 - 0.4 mm / sec. while for the pile driving device, demolition, vibrator pile driver at a distance of 50 meters are in unsafe conditions, because more than the range of 0.2 - 0.4 mm / sec, but at a distance of 100, 150, and 200 m PPV values are at safe conditionKey words: PPV, Ground Vibration, Dam sabo 
Processing The Ground Motion Signal Recording Using Correction Instrument Method Erna Kusuma Wati
Faktor Exacta Vol 14, No 2 (2021)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v14i2.8482

Abstract

The instrument correction method is a way to eliminate interference with the signal from the recording instrument response. Signal processing by the instrument correction method using the inverse filter method created using the MATLAB program. In this research using Honshu earthquake data, Japan with Mw 7.4 (dated September 5, 2004) recorded by the MERAMEX seismometer type L4C-3D type short seismometer and Japan Tohoku-Oki earthquake with a strength of Mw 9.0 (March 11, 2011) the data from four seismic stations in Padang, West Sumatra with a DS-4A type short-period seismometer. From the research known, the signal can clearly show the phase of the P and S waves. This can help to determine the parameters of the hypocenter, receiver function, moment tensors, studies of .  The surface wave phase can be reconstructed well. This is very useful for studies using surface wave data, moment tensor solutions, seismic wave dispersion studies. Based on the amplitude of the instrument correction results compared with theoretical data, the gain or amplification .
Automatic Railway Gate System for Commuter Line Train Based on Sensor Accelerometer and Microcontroller Erna Kusuma Wati
Faktor Exacta Vol 15, No 1 (2022)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v15i1.11380

Abstract

The design of the automatic system of crossbar gates has been done a lot to reduce the number of accidents at the railroad crossing, but no one has been tested directly when the real train passes. In this study will design an automatic system of railroad crossing gates that will be tested on the passing KRL commuter trains so that they can display the vibration acceleration data. There are two systems in this study; system 1 is a vibration detector, and system two is an automatic system at the railway gate. The Accelerometer sensor is a passing train vibration detector, and Arduino UNO will give the command or control of the train gate to open and close automatically with a servo motor and turn on the LED and Buzzer. The system test is carried out when ten commuter line trains cross the train line on the Jakarta-Depok, Indonesia route on each variation of distance. Variations in the interval between system 1 to system two namely 200m, 450m, and 650m are performed to obtain the time difference between the railroad gates closing entirely and the time when the train passes at the gate crossing, which is close to the standard time. The test results at a distance of 200 meters have a time difference of 2.9 seconds with an average value of 10.01 m / s2, at a distance of 450 meters for 14.1 seconds; g 10.01 m / s2, and at a range of 650 for 36.7 seconds the value of g is 10.02 m / s2. Thus the results of research on the design of an automatic system based on the accelerometer and microcontroller railroad gates placed with the distance between the systems as far as 650 meters can be recommended to PT. Commuter Indonesia makes all railroad crossing gate systems work automatically and to improve road safety and safety at railroad crossings..
Co-Authors Ayu Maharani Larasati Putri Eddy Arifin Fatah Raditya Fitria Hidayanti Hari Hadi S Hari Hadi Santoso Hari Hadi Santoso Lailatul Isnaeni Novi Azman Paisal Tajun Aripin Rahmat Bagus Prasetya Sunartoto Gunadi Tomas Kristiono V. Vekky R. Repi Yulio Ramadhan