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All Journal Sinergi Metal Indonesia Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi 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 Other

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Analisis Kekuatan Mekanis A304 menggunakan Logam Pengisi E308 pada Pengelasan GTAW dengan Variasi Parameter Apang Djafar Shiedieque; Amri Abdulah; Dede Ardi Rajab; Jefri Jafarudin
Jurnal Metal Indonesia Vol 43, No 1 (2021): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2021.v43.17-26

Abstract

AbstrakTeknologi pengelasan adalah metode penyambungan material yang umum digunakan di industri, konstruksi, dan manufaktur. Makalah ini membahas Gas Tungsten Arc Welding (GTAW) menggunakan logam pengisi ER308 untuk menyambung logam dasar A304. Penelitian ini bertujuan untuk menguji kekuatan tarik dan  lentur dari bahan dengan variasi tipe v-groove dan arus pengelasan sebagai parameter pengelasan. Jenis sambungan yaitu butt-welds dengan 45° v-groove, 60° v-groove, dan 60 ° double v-grooves, sedangkan arus pengelasan bervariasi antara 75A, 100A dan 125A. Uji kuat tarik menggunakan HUNG TA-520 dengan kapasitas mesin 500 kN. Hasil kekuatan puncak masing-masing capaian berada pada 645,70 N / mm2, 633,16 N / mm2, dan 613,89 N / mm2. Kemudian pada hasil uji tekuk retakan terbesar pada sampel terjadi pada arus 75A. Dari hasil ini lebih baik menggunakan arus 100A. AbstractWelding technology is a method of joining materials commonly used in industry, construction, and manufacturing. This paper discusses Gas Tungsten Arc Welding (GTAW) using ER308 filler metal to join the A304 base metal. This study aims to examine the strength and bending test of the variation of the v-groove type and welding current as welding parameters. Types of joints are butt-welds with 45 ° v-grooves, 60 ° v-grooves, and 60 ° double v-grooves, while the welding current varies between 75A, 100A, and 125A. Tensile strength test using HUNG TA-520 with an engine capacity of 500 kN. The peak strength results of each achievement are at 645.70 N / mm2, 633.16 N / mm2, and 613.89 N / mm2. Then the bending test results, the largest cracks in the sample, occurred at a current of 75A. From these results it is better to use a current of 100A.
Pengaruh Variasi Temperatur Sintering pada Proses Metal Injection Molding Terhadap Densitas, Porositas, dan Kekerasan Sinter Part Berbahan SS 17-4 Ph Amri Abdulah; Apang Djafar Shiediqque; Moch Iqbal Zaelani Mutahar; Raja Mualtio Panggabean
Jurnal Metal Indonesia Vol 43, No 2 (2021): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2021.v43.77-85

Abstract

Metal Injection Molding (MIM) yaitu gabungan dari proses powder metallurgy dan plastic injection molding yang diterapkan pada pembuatan produk/komponen yang memerlukan sifat mekanis yang tinggi (high performance), fleksibilitas desain dan material, permukaan yang baik, dan jumlah produksi yang tinggi sehingga dapat meminimalisir biaya manufaktur. Proses ini dapat diterapkan pada berbagai jenis material termasuk material logam maupun keramik seperti superalloy, baja tahan karat, titanium, karbida, zirconia dan lain-lain. Dalam penelitian ini metal injection molding untuk aplikasi ortodontik dilakukan dengan basis bahan stainless steel 17-4 PH selain itu ditambahkan variasi temperatur sebesar 1200°C, 1250°C, dan 1300°C selama 2 jam, untuk melihat perbandingan nilai densitas, struktur mikro, dan kekerasan sampel dari proses perbandingan nilai densitas didapatkan hasil nilai rata-rata variasi temperatur 1200°C sebelum sintering 67,31% , setelah sintering 86,07% , variasi temperatur 1250°C sebelum sintering 68,62%, setelah sintering 89,50% , variasi temperatur 1300°C sebelum sintering 69,31% , setelah sintering 91,48% , dari proses pengujian metalografi didapatkan hasil porositas sebesar 12% pada temperatur 1200°C, variasi temperatur 1250°C didapatkan hasil porositas sebesar 5% , variasi temperatur 1300°C didaparkan hasil porositas sebesar 9%, dari proses pengujian kekerasan didapatkan hasil rata-rata variasi temperatur 1200°C 59,3 HV , variasi temperatur 1250°C 88,9 HV , variasi temperatur 1300°C 70,275 HV.
Perancangan Mesin Auto Spray untuk Cleaning Candle Filter Amri Abdulah; Apang Djafar Shieddieque; Dede Ardi Rajab; Sukarman Sukarman; Choirul Anwar
Jurnal Metal Indonesia Vol 42, No 2 (2020): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2020.v42.52-62

Abstract

Penelitian ini membahas perbaikan proses penyemprotan pada tahap pembersihan candle filter di PT XYZ, yaitu permasalahan proses penyemprotan manual  pada candle filter  yang tidak efisien. Berdasarkan permasalahan tersebut maka perlu dilakukan proses penyemprotan dengan mesin. Penelitian ini membahas tentang perancangan mesin penyemprot otomatis  candle filter untuk mengurangi waktu pengerjaan. Mesin ini dirancang untuk berbagai ukuran candle filter, dan mesin dapat membersihkan candle filter  dari luar dan dalam secara bersamaan. Hasil perancangan yaitu mesin auto spray memiliki  putaran untuk penggerak nosel yaitu 596,1 Rpm dan pemutar candle filter 480 Rpm. Kecepatan putaran dirancang dengan RPM yang dapat disesuaikan dan dikontrol oleh inverter pada panel. Mesin auto spray memiliki konstruksi yang tahan korosi dan kokoh dengan spesifikasi mesin sepanjang 3005 mm x lebar 515 mm x tinggi 1215 mm. Proses penyemprotan menghemat waktu yaitu mencapai 60% yang diperoleh dari perhitungan proses penyemprotan secara manual, dan menggunakan mesin otomatis masing-masing adalah 25 menit 10 menit. Dari segi kualitas, hasil penyemprotan menggunakan mesin juga lebih baik. Dari 40 sampel yang diuji dari setiap proses, nilai rata-rata partikel saat menggunakan mesin, dan secara manual masing-masing adalah 5,36 gram dan 23,6 gram.
EVALUASI KEKUATAN UJI TARIK PADA PROSES PENGELASAN BUSUR LISTRIK BEDA MATERIAL SPHC DAN S30-C Abdurahman; Sukarman; Apang Djafar Shieddieque; Safril; Dibyo Setiawan; Nana Rahdiana
Jurnal Teknik Mesin Mechanical Xplore Vol 1 No 2 (2021): Jurnal Teknik Mesin Mechanical Xplore
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (765.546 KB) | DOI: 10.36805/jtmmx.v1i2.1395

Abstract

Paper ini membahas tentang pengaruh pengauh parameter pengelasan busur listrik (shielded metal arc welding-SMAW) terhadap kekuatan pengujian tensile strength. Proses pengelasan shielded metal arc welding merupakan salah satu teknik penyambungan logam yang banyak digunakan. Pada proses pengelasan, beerapa variable yang harus diperhatikan adalah penggunaan kuat arus pengelasan, voltase/tegangan dan diameter filler yang digunakan. Penelitian ini menggunakan metode ekperimental dengan menggunakan material baja carbon rendah SPHC dengan ketebalan 3.0 mm yang digabungkan dengan matrial S30-C. Peneitian dilakukan dengan menggunakan mesin las dengan input power 4.6 kVA. Hasil pengujian mengkonfirmasi bahwa nilai tensile strength tertinggi dicapai pada penyetingan parameter pengelasan kuat arus 135 A, tegangan/ voltase 8 volt dan diameter filler 3.2 mm didapatkan nilai tensile strength tertinggi yaitu 481.74 N/mm2. Sedangkan untuk nilai tensile strength terendah dicapai pada penyetingan pengelasan kuat arus 110 A, tegangan/ voltase 9 volt dan diameter filler 3.2 mm dengan nilai 232.21 N/mm2.
OPTIMIZATION OF THE RESISTANCE SPOT WELDING PROCESS OF SECC-AF AND SGCC GALVANIZED STEEL SHEET USING THE TAGUCHI METHOD Sukarman Sukarman; Amri Abdulah; Apang Djafar Shieddieque; Nana Rahdiana; Khoirudin Khoirudin
SINERGI Vol 25, No 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.3.9

Abstract

This article present the optimization work describes out to joint the dissimilar galvanized steel of SECC-AF (JIS G 3313) and SGCC (JIS G 3302) material. A zinc coating on the surfaces of the galvanized steel sheets will decrease the weldability characteristic of the material. This study used dissimilar galvanised steel sheets to obtain the highest tensile shear strength from the specified resistance spot welding. This research used the Taguchi method with 4-variables and mixed-experimental levels. The mixed-experimental level, namely 2-experimental levels for the first variable and 3-experimental levels for other variables. The highest tensile shear strength was achieved in 5282.13 N. This condition is achieved at a squeezed time of 20 cycles, 27 kA-welding currents, welding time of 0.5 seconds, and holding time of 18 cycles. The S/N ratio analysis has shown the welding current had the most significant effect, followed by welding time, squeeze time, and holding time. The delta values of S/N ratio were 0.79, 0.64, 0.26 and 0.07, respectively. The ANOVA analysis has shown that the P-value of welding current and welding time is 0.006 (0.6%) and 0.015 (1.5%), respectively. This result is expected for optimizing resistance spot welding quality in other materials or significant aspects.
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.
Multi-objective Optimization of Sansevieria Trifasciata Fiber Reinforced Vinyl Ester (STF/VE) Bio-composites for the Sustainable Automotive Industry Apang Djafar Shieddieque; Mardiyati Mardiyati; Sukarman Sukarman; Bambang Widyanto; Yulfian Aminanda
Automotive Experiences Vol 5 No 3 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7002

Abstract

Bio-composite materials have taken an extensive interest in research over the years due to their excellent properties, such as excellent mechanical and physical properties, stiffness, and low density/lightweight. The exceptional properties of bio-composite materials have had a widespread application in several industries, such as; the packaging industry, construction, automotive, and other related engineering fields. This research investigates mechanical, physical, and microstructure properties of Sansevieria Trifasciata (STE) natural fiber, -reinforced Vinyl Ester (STF/VE) bio-composite. The mechanical and physical properties of STF/VE bio-composites, including the tensile strength and density, are investigated through fibre preparation, orientation, and fibre volume fraction parameters. The STF/VE bio-composite tensile strength coupon is manufactured using the bio-composite transfer moulding (BTM) process and with pressure moulding. The Taguchi experimental design and analysis of variance (ANOVA) are selected to investigate the effect of variables on the mechanical properties model. The alkali preparation of STF, unidirectional fibre orientation, and fibre volume fraction improve tensile strength. Non-alkali treatment and random fibre orientatio, on the other hand, result in a reduction of density. The results of the ANOVA analysis show that the fibre volume fraction (wt.%) is the variable that most significantly affects the tensile strength and density responses, with contributions of 50.57% of tensile strength and 51.34% of density, respectively. Based on the optimization results, the STF/VE with alkali treatment, unidirectional, and 15 w.t.% is chosen as the best bio-composite formulation, with the best tensile strength-density balance. It indicates that the optimum parameter was successfully achieved among the samples examined in this work.
Karakterisasi Sifat Fisik Dan Kimia Bentonit Australia Untuk Aplikasi Green Sand Casting Apang Djafar Shieddieque; Jatira Jatira; Moch Iqbal Zaelana Muttahar; Mochamad Firdaus
Jurnal Metal Indonesia Vol 44, No 1 (2022): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2022.v44.27-34

Abstract

Sand casting merupakan salah satu metode pengecoran logam yang masih digunakan di industri hingga saat ini. Proses pengecoran dengan metode sand casting menggunakan dua jenis cetakan, yaitu cetakan pasir kering dan cetakan pasir basah. Pada proses pengecoran menggunakan cetakan pasir basah tidak semua produk hasil pengecoran dapat digunakan karena terdapat produk yang tidak memenuhi spesifikasi penggunaan produk, seperti kekasaran permukaan coran, intrusi logam cair ke dalam cetakan, gelembung udara, rongga, kegagalan cetakan, dan inklusi terak. Pembentukan cacat ini salah satunya dipengaruhi oleh permeabilitas atau campuran komposisi pasir dan bentonit yang kurang baik. Adapun peneliti melakukan pengamatan yaitu pengujian karakterisasi sifat fisik dan kimia bentonit Australia adalah difraksi sinar X, distribusi ukuran, swelling index, pH Value, methylene blue value dan kadar air. Nilai kadar senyawa Natrium Oksida (Na2O) yang diperoleh sebesar 4,7% dan Kalsium Oksida (CaO) sebesar 3,5%. Hal ini menunjukkan bahwa basis bentonit australia merupakan basis natrium, didukung oleh hasil pengujian swelling index, bentonit Australia mengalami mengembangkan hingga 15,5 kali lipat yaitu 33 ml/2gr dan nilai pH berada pada rentang 8,5-9,8. Distribusi ukuran bentonit Australia didapatkan nilai P80 sebesar 2,25 mm. Hasil  pengujian Methylene Blue Value (MBV), dengan larutan H2SO4 diperoleh bentuk halo pada konsentrasi H2SO4 2% sebanyak 21 ml. Hasil ini menunjukkan bahwa bentonit Australia dapat digunakan sebagai pengikat yang baik pada cetakan pasir basah untuk pengecoran logam.
Evaluasi Kekuatan Resistance Spot Welding pada Proses Tailor welded blankss Menggunakan Mill-steel Beda Ketebalan Khoirudin khoirudin; Dicky Dimyati; Apang Djafar Ashiedieque; Sukarman S; Fathan Mubina Dewadi; Nana Rahdiana; Istianto Budhi Rahardja; Anwar Ilmar Ramadhan; Heri Suripto
Borobudur Engineering Review Vol 1 No 2 (2021): Mechanical and Industrial Engineering Research
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/benr.4916

Abstract

This paper presented the test of cup drawing, and the tensile ability of tailor welded blanks (TWBs) used to join the resistance spot welding a variety of different parameters. This study used SPCC-SD (JIS 3141) material with a material thickness of 1.0 mm and 1.2 mm. This research is focused on obtaining the highest tensile-shear strength of resistance spot welding and how it affects the results of the drawing cup process. This study used an experimental research method using six samples of RSW parameters. RSW parameters used are welding current, welding time, and squeeze time. This research was achieved the highest tensile-shear strength value of 5.09 kN and the lowest 4.15 kN which was achieved in the 5th and 1st samples respectively. The results of the cup drawing test using RSW parameters in the 5th and 6th samples showed no TWB failure in the welded area. Further research will be carried out by performing Taguchi optimization using RSW and TWBs parameters in the cup drawing process.
Co-Authors Abdurahman Agus Suprayitno Amri Abdulah Anwar Ilmar Ramadhan Bambang Widyanto Choerul Anwar Choirul Anwar Choirul Anwar 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 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 Suripto, Heri Wilman Adi Nugraha Wilman Yoon Jung Rag Yulfian Aminanda