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All Journal Sinergi Jurnal Abdimas ADPI Sains dan Teknologi
Zakaria, Supaat
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PROPOSE SAFETY ENGINEERING CONCEPT SPEED LIMITER AND FATIGUE CONTROL USING SLIFA FOR TRUCK AND BUS Pranoto, Hadi; Adriansyah, Andi; Feriyanto, Dafit; Wahab, Abdi; Zakaria, Supaat
SINERGI Vol 24, No 3 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.3.009

Abstract

In 2015, there were 55 deaths from 6,231 accident cases that occurred in Jakarta. A severe problem in Indonesia is the absence of a unique safety device in both commercial transport or personal vehicles and the very high complexity problem of human highways. Consequently, there are many traffic accidents caused by the negligence of the driver, such as driving a vehicle in a drunken, tired, drowsy, or over-limit speed. Therefore, it needs to be innovative using devices to increase speed but able to detect the level of tired or sleepy drivers. This paper tries to propose a concept of improving safety engineering by developing devices that can control the speed and level of safety of trucks and buses, named SLIFA. The proposed device captures the driver's condition by looking at the eyes, size of mouth evaporating, and heart rate conditions.  Theses condition will be measured with a particular scale to determine the fatigue level of the driver. Some performance tests have been carried out on truck and bus with 122 Nm and 112 Nm torque wheels and 339 HP and 329 HP power values, respectively, and the minimum speed is 62 km/h. At a top speed of 70 km / h, the torque and power of the truck are 135Nm and 370HP, with average fuel consumption of 3.43 liters/km before SLIFA installation and average fuel consumption of 4.2 liters/km after SLIFA installation. SLIFA can be said to have functional eligibility and can cut fuel consumption by 81 percent.
PELATIHAN PENYELESAIAN SOAL INTEGRAL MENGGUNAKAN MATLAB SIMULINK GUNA MENUMBUHKAN MINAT SISWA PADA MATERMATIKA Feriyanto, Dafit; Romahadi, Dedik; Pranoto, Hadi; Zakaria, Supaat
Jurnal Abdimas ADPI Sains dan Teknologi Vol. 1 No. 1 (2020): Jurnal Abdimas ADPI Sains dan Teknologi
Publisher : Asosiasi Dosen PKM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47841/saintek.v1i1.132

Abstract

Mata pelajaran matematika perlu diberikan kepada peserta didik agar memilikikemampuan berpikir logis, analitis, sistematis, kritis, dan kreatif serta mempunyai kemampuanbekerja sama. Matematika adalah salah satu ilmu pengetahuan yang sangat penting yang diberikandi sekolah-sekolah. Matematika merupakan salah satu pelajaran yang diajarkan di sekolah-sekolahdengan frekuensi jam pelajaran lebih banyak dibandingkan dengan mata pelajaran lainnya. Tetapibanyak siswa yang merasa kurang mampu dalam mempelajari matematika karena dianggap sulitsehingga minat untuk mempelajari kembali matematika di luar jam sekolah sangat kurang.Berdasarkan permasalahan di atas, tim pengusul bertujuan memberikan kegiatan pembelajaranmatematika yang mudah dan menarik menggunakan software MATLAB di SMAN 95 Jakarta.Pelatihan telah sukses dilaksanakan dengan jumlah peserta 35 siswa. Dalam pelatihan tersebut,terlihat mahasiswa sangat antusias dalam belajar Matlab guna menyelesaikan soal-soal integral.Siswa telah dapat menyelesaikan soal integral pangkat 1-3 sehingga siswa merasa puas denganadanya pelatihan ini dan diharapkan adanya pelatihan-pelatihan serupa yang dilakukan di SMAN95 Jakarta.
Compound development as a protective layer on fecral substrate by a combination of γ-Al2O3 ultrasonic and NiO electroplating techniques to improve thermal stability Hidayat, Imam; Feriyanto, Dafit; Zakaria, Supaat; Abdulmalik, SS.; Nurato, Nurato; Romahadi, Dedik
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.003

Abstract

One of the most technologically advanced methods for developing and adhering catalysts to the FeCrAl substrate is electrophoretic deposition. However, it faces a problem: low thermal stability at high temperatures of 10000 °C, caused by a lack of a protective oxide layer. The goal of this study is to investigate the protective oxide layers formed by Al2O3 and NiO coatings on FeCrAl metallic material for catalytic converters (CATCO). The electrolyte was prepared with distilled water at a constant temperature of 40±50 °C. The pH was adjusted to 5 with HCl and NaOH reagents. The electrolyte was prepared at 40 ± 50 °C and stirred for 1 minute using a magnetic stirrer. A 50mm x 10mm Ni plate substrate served as the anode, while a 40mm x 20mm FeCrAl cathode was used. The spacing between the anode and cathode was set at 25mm. The electroplating was conducted for several variation times of 15, 30, 45, 60 and 75 minutes, current density of 8 A/dm2, 3g γ-Al2O3 was inserted into the beaker for each sample and the total surface area was 1600mm2 on both sides. Drying was performed after electroplating at 600 °C for 12 hours.  Raman spectroscopy revealed that several compounds observed during the experimental stages, such as FeCrAl, γ-Al2O3, NiO, NaO2, NiAl2O4, NiCr2O4, and FeCr2O3, were also present in the coated FeCrAl CATCO, with distinct peaks. Therefore, it can be concluded that the UB+EL 30 min successfully deposited the γ-Al2O3 and NiO on the FeCrAl substrate after CATCO fabrication.
Co-Authors Abda Abda Abdi Wahab Abdulmalik, Samir Sani Abdulmalik, SS. Andi Adriansyah Dafit Feriyanto Dedik Romahadi Hadi Pranoto Leman, Abdul Mutalib Nurato Siang, Alan Ooi Lim Sidik, Muhamad Afifi Muhamad