Article Per Year (5 Year)
p-Index From 2019 - 2024
0.562
P-Index
This Author published in this journals
All Journal Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi
Apang Djafar Shieddique
Sekolah Tinggi Teknologi Wastukancana
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
PENGARUH UKURAN BUTIR KATALISATOR CANGKANG TELUR PADA PROSES PACK CARBURIZING TERHADAP KEKERASAN DAN STRUKTUR MIKRO MATERIAL DIN 17210 C15 Dede Ardi Rajab; Amri Abdulah; Apang Djafar Shieddique; Agus Husna; Roy Waluyo
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 7, No 1 (2021)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v7i1.4156

Abstract

Penambahan karbon pada permukaan baja karbon rendah sering disebut pack carburizing. Selain bahan kimia, katalisator untuk proses pack carburizing yang mudah didapatkan  yaitu cangkang telur.  Pada prosesnya, cangkang telur dihaluskan menjadi serbuk dan dicampur dengan arang tempurung kelapa. Dalam penelitian ini menggunakan variasi tiga tingkat  ukuran butir cangkang telur,  dengan ukuran yaitu ±1 mm2, ±3 mm2 dan ±5 mm2 yang masing – masing dicampur dengan karbon aktif dari arang tempurung kelapa dengan komposisi 40% cangkang telur, 60% arang tempurung kelapa. Tujuan dari penelitian yaitu untuk mencari nilai kekerasan yang terbaik.  Specimen yang digunakan sebagai  material dasar adalah baja DIN 17210 C15 yang termasuk dalam kelompok baja karbon rendah. Suhu pada proses pemanasan di furnace yaitu 950 °C dan holding time selama 2 jam,  lalu pengambilan foto mikroskopik pada material kemudian uji kekerasan material sebelum dan sesudah pack carburizing. Hasil penelitian ditemukan nilai effective case depth yang paling tinggi adalah specimen A yang menggunakan ukuran butir katalisator ±1 mm2 sebesar 1.2 mm dan terendah pada specimen C ukuran butir katalisator ±5 mm2 sebesar 0.96 mm,  dari hasil tersebut bahwa cangkang telur dengan ukuran butir yang lebih kecil akan mudah menjadi gas lebih cepat dibandingkan dengan yang lebih besar, kecepatan menjadi gas tersebut berpengaruh terhadap kekerasan permukaan specimen yang dihasilkan.
Analisis Keretakan pada Sambungan Las antara Pipa ASTM A106 dengan Globe Valve Amri Abdulah; Apang Djafar Shieddique; Jatira Jatira; Dede Ardi Rajab; Sukarman Sukarman
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v3i2.2150

Abstract

Crack failure often occurs in piping installations, especially in the welding area which can be caused by excessive stress or corrosion of the material. In this case, the crack failure in the HAZ area will be discussed near the pipe connected to the valve for the heat transfer fluid line. The method used in this paper is the inspection of the attached materials using OES (Optical emission spectroscope), observation of pipe and valve joints and failure analysis. From the results of material inspection, it was found that the pipe used was ASTM A106, then from the microstructure it was seen that the grain dimensions were not homogeneous, it would cause the strength of material heterogeneity, then from visual observation, it could be seen that pipe joints and valve misalignment occurred.
Analisis Ketahanan Material Epoxy Powder EF150AB pada Uji Thermal Shock untuk Komponen Charger Mobil Listrik Apang Djafar Shieddique; Amri Abdulah; Choerul Anwar; Yoon Jung Rag; Sohn Chang Kil; Dodi Muhammad
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 2 Tahun 2021
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v3i2.2153

Abstract

Inside the electric car charger there is a controller where one of the components is the Disc Ceramic Capacitor (DCC) type SCF2E472M10 coated with epoxy powder EF150AB. The faster the charging, the higher the temperature, for that we need good performance on the capacitor layer. The method used in this study is to test the Pressure Cycle Temperature (PCT) with a temperature of 121 ° C, a pressure of 2 bar and a holding time of 48 hours and a Thermal Shock Test with a temperature parameter of -40 ° C to 125 ° C for each temperature change. 30 minutes for 100 hours, the number of test samples for each test is 20. From the test results, it was found that the average capacitance value on the PCT test was 4439.9 pF with a standard limit value of 3760 to 5640 pF, then the average value of Insulation resistance (IR) after the PCT test was 14183 Ω with the standard limit of the IR value of 10000 Ω. From these results it can be concluded that epoxy powder EF150AB is good for DCC coatings because the coating is resistant to low and high temperatures, which ranges from -40 ° C to 125 ° C.
Co-Authors Agus Husna Amri Abdulah Choerul Anwar Dede Ardi Rajab Dede Ardi Rajab Dodi Muhammad Jatira Jatira Roy Waluyo Sohn Chang Kil Sukarman Sukarman Yoon Jung Rag