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All Journal Sinergi REKAYASA Metal Indonesia Turbo : Jurnal Program Studi Teknik Mesin Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Teknologika Borobudur Engineering Review SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Polimesin
Shieddieque, Apang Djafar
Sekolah Tinggi Teknologi Wastukancana
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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.
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.
Optimasi Parameter Proses Resistance Spot Welding pada Pengabungan Beda Material SPCC Syahri Tua Pasaribu; Sukarman Sukarman; Apang Djafar Shieddieque; Amri Abdullah; Rohman Rohman
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1067.723 KB)

Abstract

Makalah ini menyajikan ikhtisar optimasi parameter proses resistance spot welding menggunakan logam SPCC-SD (JIS 3141) beda ketebalan sehingga perlu ketepatan seting parameter resistance spot welding. Penelitian ini  bertujuan untuk mendapatkan hasil uji tegangan tarik geser tertinggi dari kombinasi parameter resistance spot welding yang ditetapkan. Penelitian ini menggunakan metode Taguchi dengan menggunakan empat parameter dan tiga level eksperimen. Hasil uji tegangan tarik geser tertinggi sebesar 4,91 kN dan terendah adalah 4,12 kN. Hasil uji tarik geser tertinggi didapatkan pada kombinasi welding current 37 kA, welding time 6 cycles, holding time 15 cycles, dan squeeze time 22 cycles.
Optimasi Parameter Proses Resistance Spot Welding pada Pengabungan Material SECC-AF Edi Gunawan; Sukarman Sukarman; Apang Djafar Shieddieque; Choirul Anwar; Jatira Jatira
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1202.571 KB)

Abstract

Makalah ini menyajikan ikhtisar optimasi parameter proses resistance spot welding menggunakan logam SECC-AF (JIS G 3313). Material SECC-AF (JIS G 3313) merupakan plat lembaran SPCC (JIS 3141) yang dilapisi zinc dengan ketebalan tertentu sehingga sifat mampu lasnya (weld ability) menurun.  Penelitian ini bertujuan untuk mendapatkan hasil uji tegangan tarik geser tertinggi dari kombinasi parameter resistance spot welding yang ditetapkan. Penelitian ini menggunakan metode Taguchi dengan menggunakan empat variabel dan kombinasi 4-2 tingkat eksperimen. Hasil uji tegangan tarik geser tertinggi sebesar 4,66 kN dan terendah adalah 3,88 kN.
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.
Seasoning Funnels Die Design for Autopacking Machine Distributors Using SUS 316 Material Jatira Jatira; Amri Abdulah; Sukarman Sukarman; Apang Djafar Shieddique; Dede Ardi Rajab; Satria Prayoga
Jurnal POLIMESIN Vol 20, No 2 (2022): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v20i2.2895

Abstract

This article discussed the design of dies and punches using SUS 316 material for seasoning funnel (SF) applications in the food industry. Cracks in the welding zone in the seasoning funnel (SF) result in leakage of seasonings and result in product mass, which is one of the main parameters in the food industry and a minimum. The damage location on the SF is identical, on the sides of the SF around the bolt holes. The movement of the spice powder, which rotates at high speed, produces a centrifugal force and is then transferred through the SF. The metal structure is becoming increasingly coarser in the area adjacent to the weld melting line. An additional punch with a knocking arm delivers to the SF to expedite the transfer. The knocking arm caused the SF fracture on the SF. SUS 316 sheet metal material for SF without welding is thought to reduce weld damage and speed up the procurement process. The input design for attempting to make dies has been correctly selected as SUS 316 material thickness of 1.0 mm. The two main processes required to form SF from sheet metal were blanking and bending. The SKD-11 material was selected carefully for the main components of the dies and punch. Supporting components such as shank, shaft, top plate, and bottom plate are determined using St 60 material. St 37 material determines the stripper, punch holder, and stopper components. Based on theoretical calculations, the blanking force should be about 225.5 kN. To minimize the burr in the blanking process, dies and punch allowances of 0.1 mm were chosen. The minimum required bending force calculation was 39 kN. A material factor spring back value of 0.98 was selected correctly to achieve the desired bending angle. The simultaneous blanking and bending processes necessitated using a 72.96-tonne power press machine.
Improving Dissimilar Metal Joining Quality Through Shielded Metal Arc Welding: A Taguchi Optimization Strategy Supriyanto, Agus; Sukarman, Sukarman; Mulyadi, Dodi; Djafar Shieddieque, Apang; Abdulah, Amri; Khoirudin, Khoirudin
Jurnal Teknik Mesin Mechanical Xplore Vol 5 No 1 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v5i1.7867

Abstract

The results of an experiment that used an orthogonal Taguchi method to improve shielded metal arc welding (SMAW) were given. The SMAW method was used to join dissimilar metal of SPHC and St. 30. SPHC material has a low carbon steel content, while St. 30C steels contain a medium amount of carbon steel, which is used for tractor shaft axles. Carbon percentages vary slightly between the two substances. This study aimed to achieve the highest possible quality of tensile strength by utilizing the specified SMAW parameters. SPHC material has a low carbon content, whereas St. 30 steel has a moderate carbon content. This study used the Taguchi experimental method with three input variables and three experimental levels. The SNR ratio is used to evaluate the most optimal SMAW performance. ANOVA analysis is used to evaluate the most crucial parameters in determining the response variable. This research has successfully provided input on the combination of SPHC and St. 30C for SMEs. It operates effectively with a welding current of 133 A, a welding voltage of 9 V, and a filler diameter of 2.0 mm. The S/N ratio analysis found that the welding current, voltage, and filler diameter all had a significant impact on the outcome.
PENGARUH VARIASI MEDIA QUENCHING TERHADAP KEKERASAN DAN STRUKTUR MIKRO MATERIAL PADUAN Al-Si-Cu-Fe Shieddieque, Apang Djafar
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3383

Abstract

meningkatnya tuntutan efisiensi energi dan material yang ringan namun kuat adalah tantangan utama yang dihadapi untuk meningkatkan kekuatan aluminium tanpa mengorbankan sifat-sifat unggul lainnya. Hal ini didukung dengan sifat mekanik dari alumunium yang sudah dimodifikasi. Setiap metode memiliki efek yang berbeda terhadap sifat mekanis dan mikrostruktur aluminium, sehingga pemahaman mendalam tentang teknik penguatan sangatlah penting. Proses perlakuan panas (Heat treatment) digunakan untuk meningkatkan sifat mekanik aluminium, seperti kekuatan dan keuletan. Parameter seperti suhu, waktu pemaparan, dan laju pendinginan mempengaruhi hasil akhir dari Heat treatment. Tujuan dari penelitian ini adalah mengetahui pengaruh variasi media quenching terhadap perubahan struktur mikro dan kekerasan paduan Al-Si-Cu-Fe. Pengujian yang dilakukan berupa pengujian kekerasan dan pengamatan metalografi. Dari hasil penelitian didapatkan bahwa perlakuan panas quenching dengan perbedaan variasi media quenching cenderung mempengaruhi tingkat kekerasan Al-Si-Cu. Dari hasil pengujian kekerasan, nilai rata-rata kekuatan tertinggi didapatkan dengan media quenching air sebesar 75,484 BHN. Variasi media pendingin akan merubah struktur mikro melalui penyebaran partikel Si dan morfologi partikel Si. Hasil pengujian kekerasan dan hasil pengamatan struktur mikro spesimen dengan media quenching air memiliki struktur mikro dengan bentuk partikel Si paling halus dan penyebaran partikel Si yang banyak sehingga tingkat kekerasan pada spesimen dengan media pendingin air paling tinggi.
Pengaruh Variasi Holding Time pada Proses Single Stage Aging Terhadap Kekerasan dan Mikrostruktur pada Material Paduan Al-Si-Cu-Fe Shieddieque, Apang Djafar; Kuswandi, Rendi
Rekayasa Vol 18, No 1: April 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i1.26678

Abstract

The Al-Si-Cu aluminum alloy is the most commonly used alloy for household appliances, aircraft materials, automotive, marine vessels, construction, and more. However, cast aluminum alloys still exhibit low mechanical properties, necessitating additional processes to enhance their strength. One method of strengthening aluminum is by varying the composition and/or heat treatment process. The aim of this research is to investigate the effect of aging time variation on the microstructure and hardness of the Al-Si-Cu-Fe alloy. The heat treatment processes conducted in this study include solid solution treatment (T=540°C and t=5 hours) and various single-stage aging treatments (T=155°C and t=4, 5, and 6 hours). Mechanical properties of the aluminum alloy were evaluated through metallographic observations and Brinell hardness testing. Microstructural observations indicate changes in the Silicon microstructure from the As cast sample, which exhibits dendrites, to the formation of AlSi and AlFeSi phases after aging treatment. With longer aging treatments, larger and more dispersed precipitate grains are formed. The variation in holding time has different effects on hardness, with the highest hardness obtained at a holding time of 4 hours during artificial aging, resulting in 71.57 BHN. However, increasing the holding time tends to decrease hardness due to the growth of larger precipitate phases.
Co-Authors Abdurahman Agus Solehudin Agus Suprayitno Agus Supriyanto Amar Amar Amri Abdulah Amri Abdullah Anwar Ilmar Ramadhan Ardi Rajab, Dede Bambang Widyanto Basit, Arul Cahyo, Tegar Dwi Choerul Anwar Choirul Anwar Choirul Anwar Choirul Anwar Dede Ardi Rajab Dede Ardi Rajab Dede Ardi Rajab Dicky Dimyati Dodi Muhammad Dodi Mulyadi Dodi Mulyadi Edi Gunawan Eka Aprisuryanto Eki M Yunus Fathan Mubina Dewadi Fherdy Febriyana Ghany Heryana Heryadi, Yadi Iman Rahayu Istianto Budhi Rahardja Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jefri Jafarudin Joddy Arya Laksmono Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin, Khoirudin Kil, Sohn Chang Kurnia, Tata Kuswandi, Rendi Mardiyati, Mardiyati Moch Iqbal Zaelana Muttahar Moch Iqbal Zaelani Mutahar Mochamad Firdaus Nana Rahdiana Nana Rahdiana Nana Rahdiana Naufal, Muhammad Fairuz Prayitno, Bibit Putra Nugraha, Ismail Rag, Yoon Jung Rahdiana, Nana Raja Mualtio Panggabean Rajab, Dede Ardi Rohman Rohman Rohman Rohman Rohman Safril Sahrul Hidayat Satria Prayoga setiawan, Dibyo Sohn Chang Kil Sri Suhartini Suhara, Ade Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Suriaman, Irwan Suripto, Heri Syahri Tua Pasaribu Wilman Adi Nugraha Wilman Yoon Jung Rag Yulfian Aminanda Zaenal Muttahar, Mochammad Iqbal