Article Per Year (5 Year)
p-Index From 2021 - 2026
2.286
P-Index
This Author published in this journals
All Journal Sinergi Metal Indonesia Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Teknologika Borobudur Engineering Review
Shieddique, Apang Djafar
Faculty Of Mechanical Engineering, Sekolah Tinggi Teknologi Wastukancana, Jl. Cikopak No. 53, Purwakarta, 41151, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

Published : 16 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 16 Documents
Search

 1   2 
Sintesis dan Karakterisasi Serbuk Magnet Barium Heksaferit (BaFe12O19) dari Senyawa Klorida dengan Metode Sol-Gel untuk Bahan Magnet Permanen Apang Djafar Shieddieque; Choirul Anwar; Eki M Yunus; Fherdy Febriyana
Jurnal Metal Indonesia Vol 44, No 2 (2022): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2022.v44.60-66

Abstract

Penelitian ini bertujuan untuk mensintesis serbuk magnet barium heksaferit (BaFe12O19) dari senyawa klorida menggunakan metode sol-gel dengan variasi waktu aging selama 0 jam, 2 jam, 4 jam dan 6 jam. Karakterisasi yang dilakukan pada serbuk meliputi pengujian X-Ray Diffraction (XRD) untuk mengetahui fasa yang terbentuk, pengujian Scanning Electron Microscope (SEM) untuk mengetahui ukuran butir yang dihasilkan dan pengujian Vibrating Sample Magnetometer (VSM) untuk mengetahui nilai magnetik yang didapatkan pada serbuk yang telah disintesis. Berdasarkan pengujian XRD pada sampel dengan variasi waktu aging 0 jam ditemukan fasa pengotor Hematite (α-Fe2O3) sebanyak 88,4% dan fasa Barioferrite (BaFe12O19) sebanyak 11,6%, sedangkan pada sampel dengan variasi waktu aging 6 jam ditemukan fasa pengotor Hematite (α-Fe2O3) sebanyak 86,2% namun tidak terdapat fasa Barioferrite (BaFe12O19) melainkan hanya terbentuk fasa Magnetite (Ba2Fe3O8) sebanyak 13,8%, hal tersebut kemungkinan disebabkan oleh reaksi yang belum sempurna pada proses sintesis ini. Untuk pengujian SEMsudah membentuk partikel Hexagonal, ukuran rata-rata ketebalan partikel serbuk barium heksaferit (BaFe12O19) yang terbentuk pada sampel dengan variasi waktu aging 0 jam sebesar 0,79 µm dan pada sampel dengan variasi waktu aging 6 jam sebesar 1,12 µm. Pada pengujian VSM diperlihatkan grafik kurva hysteresis loop, masing-masing sampel mendapatkan nilai kemagnetan sebesar 0,055 emu/g, 0,35 emu/g,0,024 emu/g dan 0,33 emu/g, nilai magnetik terbesar diperoleh pada sampel dengan variasi waktu aging 0 jam sebesar 0,055 emu/g dan nilai magnetik terkecil diperoleh pada sampel dengan variasi waktu aging 4 jam sebesar0,024 emu/g.
PERANCANGAN MOLD SET KOMPONEN HANDLE PINTU MOBIL DENGAN MATERIAL ALUMUNIUM 6061 Jatira; Apang Djafar Shieddieque; Wilman Adi Nugraha Wilman
Jurnal Teknologika Vol 13 No 1 (2023): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v13i1.245

Abstract

In the world of the manufacturing industry, developments and needs are increasing every day and very rapidly. Many parts and components in automotive production are very important and very much too because each component has its own function and use. There are many alternatives and development of materials for component manufacturing in the automotive world which aim to cut production costs and efficiency. To overcome this condition, the authors tried to research and make a Mold for the Avansa car door handle using HIPP (High Impact PolyPropilane) material. Generally, not many HIPP use it in the automotive industry. Making this door hendle using the Hot Compression process. Among other things, hot compress is the process of making a product by using heat and pressure to form the desired product. So far, making molding is less precise because mold making is not in accordance with the manufacturing process, therefore the author uses a CNC (Computer numarical control) machine for this molding-making process, the molding process using this CNC machine aims to make the results more precise and more accurate. more as desired.
Studi Perbandingan Sifat Fisik, Struktur Mikro, dan Ketahanan Korosi pada Cast Iron Skillet Cookware Lokal dan Import mengacu pada SNI 8752:2020 Apang Djafar Shieddieque; Rohman Rohman; Moch Iqbal Zaelana Muttahar; Agus Suprayitno; Eka Aprisuryanto
Jurnal Metal Indonesia Vol 45, No 2 (2023): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2023.v45.72-80

Abstract

Kemajuan teknologi memerlukan inovasi dalam industri makanan, dan penggunaan peralatan masak dengan peralatan  besi cor telah muncul, dan besi cor dalam peralatan masak ini biasa disebut sebagai skillet. Tingginya penggunaan skillet di Indonesia, menyebabkan adanya persaingan antara produk lokal dan impor tersebut, dengan mengacu pada SNI 8752:2020. Kualitas dan kemampuan dari skillet tersebut harus memenuhi kriteria standar penggunaan yang telah diatur dalam regulasi. Beberapa metode yang dapat dilakukan dalam penelitian ini yaitu dengan cara sifat tampak, ketebalan, volume dan kestabilan, metalografi, serta korosi. Adapun hasil dari penelitian yang dilakukan sifat tampak yang teruji pada cookware lokal adalah tidak ada permukaan yang tajam dan bintik yang menonjol dan permukaannya rata, begitupun cookware Jepang dan Jerman. Ketebalan pada cookware lokal, Jepang dan Jerman memiliki ketebalan dinding rata-rata 3,53 mm; 2,84 mm; 4,01 mm secara berurutan, sedangkan untuk ketebalan dasar cookware Indonesia, Jepang dan Jerman adalah 4,43 mm; 3,58 mm; 3,80 mm secara berurutan. Pengujian kapasitas volume dan kestabilan dari cookware lokal dan impor, didapatkan hasil bahwa kapasitas volume dari cookware lokal, Jepang dan Jerman adalah 538,5 mL; 993,5 mL dan 1865,5 mL. Sedangkan pengujian kestabilan didapatkan hasil yang menunjukkan dari ketiga sampel tersebut bergoyang ketika disentuh. Pada pengamatan metalografi dari ketiga sampel yaitu lokal, Jepang dan Jerman ditemukan fleks grafit pada setiap sample cookware, hal ini menunjukkan bahwa cookware tersebut berbahan dasar cast iron. Tingkat ketahanan korosi pada cookware lokal lebih rendah dibanding cookware Jepang dan Jerman dengan jumlah hasil korosi sebesar 19% dengan selisih sebesar 9 dan 13% dengan cookware Jepang dan Jerman secara berturut-turut. Dari hasil gambar metode grain counting tersebut, semakin tinggi tingkat ketahanan korosi, maka hasil yang lebih baik terdapat di cookware lokal dibandingkan cookware Jepang dan Jerman. AbstractThe advancement of technology requires innovation in the food industry, and the use of cooking equipment with cast iron has emerged. Cast iron in these cooking utensils is commonly referred to as a skillet. The high use of skillets in Indonesia has led to competition between local and imported products, with reference to SNI 8752:2020. The quality and ability of the skillet must meet the standard criteria for use that have been regulated in the regulations. Several methods that can be carried out in this study are by means of appearance, thickness, volume and stability, metallography, and corrosion. As for the results of the research conducted, the visible properties that were tested on local cookware were that there were no sharp surfaces and protruding spots and that the surface was flat, as well as Japanese and Gernan cookware. The thickness of local, Japanese and German cookware has an average wall thickness of 3.53 mm; 2.84 mm; 4.01 mm respectively, while the basic thickness for Indonesian, Japanese and German cookware is 4.43 mm; 3.58 mm; 3.80 mm sequentially. Testing the volume capacity and stability of local and imported cookware, it was found that the volume capacity of local, Japanese and German cookware was 538.5 mL; 993.5 mL and 1865.5 mL. While testing for stability, the results showed that the three samples wobbled when touched. In metallographic observations of the three samples, namely local, Japanese and German, graphite flexes were found in each cookware sample, this indicates that the cookware is made from cast iron. The level of corrosion resistance in local cookware is lower than Japanese and German cookware with a total corrosion yield of 19% with a difference of 9 and 13% with Japanese and German cookware respectively. From the results of the grain counting method image, the higher the level of corrosion resistance, the better the results are in local cookware compared to Japanese and German cookware.
Development of hybrid nanofluids and solar heat exchangers (SHX) to improve heat transfer performance in solar panel cooling Amri Abdulah; Apang Djafar Shieddieque; Dede Ardi Rajab; Khoirudin Khoirudin; Sukarman Sukarman
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12913

Abstract

This study examined the thermohydraulic efficiency of a novel Solar Heat Exchanger (SHX) designed for cooling solar panels. The SHX was specifically created for 20 Wp solar panels measuring 450 × 350 mm. The cooling medium was a hybrid nanofluid (HNF) consisting of Al₂O₃ and SiO₂ nanoparticles (0.5–1%) suspended in a base fluid of ethylene glycol and water (EG/W) at a 10:90 ratio. Experiments were performed using flow rates ranging from 1 to 3 LPM. The HNF coolant demonstrated enhanced performance in the solar heat exchanger, with a maximum heat transfer rate increase of 56.07% compared with that of the base fluid. This improvement in the heat-transfer rate was associated with an increase in the heat-transfer coefficient, which was influenced by the flow rate and volume fraction of the HNF. The effectiveness of the HNF surpassed that of the base fluids by approximately 117%. The results indicated that higher flow rates and volume fractions improved cooling performance. The enhanced cooling efficiency and innovative SHX design make this study particularly relevant to the development of solar panel cooling systems, particularly those employing hybrid nanofluid coolants.
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 Dan 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 Dan 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 Abdurahman Agus Suprayitno Amri Abdulah Anwar Ilmar Ramadhan Bambang Widyanto Choerul Anwar Choirul Anwar Choirul Anwar Dede Ardi Rajab Dede Ardi Rajab Dicky Dimyati Dodi Muhammad Eka Aprisuryanto Eki M Yunus Fathan Mubina Dewadi Fherdy Febriyana Istianto Budhi Rahardja Jatira Jatira Jatira Jatira Jatira Jefri Jafarudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Mardiyati, Mardiyati Moch Iqbal Zaelana Muttahar Moch Iqbal Zaelani Mutahar Mochamad Firdaus Nana Rahdiana Nana Rahdiana Nana Rahdiana Raja Mualtio Panggabean Rohman Rohman Safril setiawan, Dibyo Sohn Chang Kil Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Suripto, Heri Wilman Adi Nugraha Wilman Yoon Jung Rag Yulfian Aminanda