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All Journal Rekayasa Mesin Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Turbo : Jurnal Program Studi Teknik Mesin Eksponen Sinar Sang Surya: Jurnal Pusat Pengabdian kepada Masyarakat ARMATUR : Artikel Teknik Mesin dan Manufaktur Indonesian Community Journal

Asroni Asroni

Universitas Muhammadiyah Metro

Author-ID : 2814171

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Pembuatan dan pengujian spot welding menggunakan travo daur ulang Tri Cahyo Wahyudi; Asroni Asroni; Bahtiar Abdul Rahman
TURBO [Tulisan Riset Berbasis Online] Vol 11, No 1 (2022): Jurnal TURBO Volume 11 Nomor 1 Juni 2022
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i1.2087

Spot welding is very much needed for the home industry, but the expensive welding price and large welding power make spot welding less efficient for small industries. Therefore, spot welding with small power and easy-to-carry design is needed. Spot welding design process is carried out in stages, namely planning, explaining component functions, and testing variations in the welding time used. The method used is experimental by making and testing. The specimen used is a type 304 stainless steel plate with a thickness of 0.8 mm. selected stainless steel type 304 with a thickness of 0.8 mm using a lap joint, with variations in welding time of 10, 15, and 20 seconds, using a current of 550 Ampere. The test carried out is a shear test with the AWS D8.9-97 test standard, with the aim of this study to determine the optimization of spot welding equipment using a recycled transformer on the test results. From the results of the research that has been carried out, it can be concluded that in variations of electric current and welding time, the highest average shear stress value is found at 550 A electric current by welding for 10 seconds the average shear stress is 1,060,164 (N/mm²) and the lowest average shear stress at an electric current of 550 A welding for 20 seconds the average shear stress is 564.578 (N/mm²).

Pengaruh variasi tegangan listrik terhadap ketebalan dan kuat lekat pada baja karbon rendah dengan proses elektroplating Ahmad Zainuri; Asroni Asroni; Sulis Dri Handono
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 2 No 2 (2021): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Elektroplating adalah proses penegndapan ion-ion logam dengan cara elektro lapisan logam yang diplating agar tidak mudah korosi. Baja merupakan logam paduan antara Besi (Fe) dan Karbon (C), dimana besi sebagai unsur dasar dan karbon sebagai unsur paduan utamanya,. Adapun dari penelitian menggunakan bahan baja plat ST-41, larutan asam sulfat dan jarak anoda yang ditetapkan 5 cm. Tujuan penelitian pelapisan ini untuk membentuk permukaan dengan sifat atau dimensi yang berbeda dengan logam dasarnya. Terjadinya endapan pada proses disebabkan adanya ion-ion pada elektrolit tersebut akan mengendap pada katoda, proses elektrokimia akan mengalami reaksi oksidasi dan reduksi. Metode penelitian ini menggunakan variasi tegangan pelapisan 7,5 Volt, 8,5 Volt, dan 9,5 Volt kemudian dilakukan pengujian ketebalan dan kuat lekat. Hasil penelitian ini didapatkan hasil tegangan pelapisan 7,5 menit dengan ketebalan rata rata 0,121 mm rata rata nilai kuat lekat 23,33 MPa, tegangan pelapisan 8,5 Volt dengan ketebalan rata rata 0,139 mm rata rata nilai kuat lekat 25,06 MPa, tegangan pelapisan 9,5 volt dengan ketebalan rata rata 0,148 mm rata rata nilai kuat lekat 26,27 MPa.

Pengaruh waktu pelapisan terhadap ketebalan dan kuat lekat pada baja karbon rendah dengan proses elektroplating Nurvan Wijanarko; Asroni Asroni; Eko Budiyanto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 2 No 2 (2021): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Baja adalah logam paduan antara besi (Fe) dan karbon (C), dimana besi sebagai unsur dasar dan karbon sebagai unsur paduan utamanya. Elektroplating atau pelapisan secara listrik merupakan proses lapisan suatu logam secara elektrolis melalui penggunaan arus listrik searah (DC) dan larutan kimia (elektrolit). Pelapisan bertujuan untuk membentuk permukaan dengan sifat atau dimensi yang berbeda dengan logam dasarnya. Terjadinya endapan pada proses disebabkan adanya ion-ion pada elektrolit tersebut akan mengendap pada katoda. Penelitian ini menggunakan variasi waktu pelapisan 20 menit, 25 menit, dan 30 menit kemudian dilakukan pengujian ketebalan dan kuat lekat. Dari pengujian yang dilakukan didapatkan hasil waktu pelapisan 30 menit dengan ketebalan rata rata 0,314 mm rata rata nilai kuat lekat 26,79 MPa, waktu pelapisan 25 menit dengan ketebalan rata rata 0,216 mm rata rata nilai kuat lekat 22,58 MPa, waktu pelapisan 20 menit dengan ketebalan rata rata 0,114 mm rata rata nilai kuat lekat 18,95 MPa.

Analisa kerja mesin CNC laser cutting CO2 2 axis berbasis MACH3 pada variasi pemotongan Giri Halim; Asroni Asroni; Eko Budiyanto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 3 No 1 (2022): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v3i1.1935

Laser technology is now so rapidly and is used in almost all fields, such as in manufacturing, medical, arts, trade transactions and printing. Although there are various types of lasers on the market, the C02 laser is the most common in manufacturing. This is due to its relatively large power so that its use is more flexible and can be used for cutting thin sheet materials as well as rather thick materials. Laser cutting has various advantages over other manufacturing technologies because it can receive data directly from the computer, so that cutting automation can run in the industrial world. The use of CNC (Computer Numerical Control) machines in laser cutting systems is very necessary, because we can cut a material with the design shape we want and with good cutting quality. The method used is experimental by designing and manufacturing and testing a CO2 laser cutting CNC machine. Testing is done by finding the best feedrate and knowing the level of accuracy of the cutting results on different types of cutting grooves. From the results of the study it can be concluded that the best feedrate is 50 mm/min, and also the level of accuracy with different groove cutting shapes affects the level of cutting accuracy, the lowest accuracy coefficient is 0.73 mm.

Analisa penambahan unsur mangan pada remelting velg motor bekas terhadap nilai kekerasan Rahmat Rudiansyah; Eko Nugroho; Asroni Asroni
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 3 No 2 (2022): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v3i2.2866

Remelting or metal casting is a recycling method that can be done to obtain a material with the desired physical and mechanical properties by changing its basic properties. Re-melting has a weakness, namely the toughness of the metal will decrease along with the re-melting treatment, due to phase changes that occur during the re-melting step, both physical and mechanical changes. Recycled aluminum wheels so that they can be reused properly and safely, treatment must be carried out to justify their structure. Manganese is used in several metal alloys to enhance favorable characteristics such as strength, hardness, and durability. The purpose of this study was to determine the hardness value of the effect of remelting used aluminum alloy wheels with manganese added in it. The research method used was experimental by re-melting used aluminum alloy wheels with manganese added, printing specimen models, and testing hardness using the Vickers method. The addition of manganese was carried out with a composition of 1.0%Wt, 1.2%Wt, and 1.4%Wt. The highest hardness value is owned by the specimen with the addition of 1.2%Wt manganese, which is 87.8 Kgf/mm2. The higher the Mn composition up to 1.2%Wt, the higher the hardness value. The hardness value will weaken when the addition of manganese exceeds 1.2%Wt.

ANALISA KECEPATAN SLUG ALIRAN DUA FASE DI DOWNSTREAM T-JUNCTION MINICHANNEL HORIZONTAL DENGAN RADIUS BELOKAN (r/dh) 0.7 Untung Surya Dharma; Calista Anjani Dwiputri; Eko Nugroho; Asroni Asroni; Deendarlianto Deendarlianto; Indarto Indarto
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1432

Uneven distribution of the phases between in the main channel when two-phase flow passes through the T-junction it can cause the formation of slug flow which affects performance in the downstream area. The slug is formed due to the acceleration of the gas phase moving towards an average or stable velocity. The bend radius of the T-junction affects the formation of slug because the radius can increase the velocity of the gas phase. Research on the slug velocity was carried out in the downstream region of the horizontal mini channel T-junction. The working fluid used is air as the gas phase and water. The flow pattern and velocity slug analysis were carried out by visualizing the flow at a distance of ±30 mm from the T-junction, that works as a mixer of the working fluid. High-speed camera is used to record video and processed in the form of image processing with the MATLAB program. Two-phase flow slug velocity analysis conducted in the downstream area of the horizontal minichannel T-junction, it can be concluded that the slug velocity tends to increase linearly with increasing superficial velocity of air and water. Comparison of slug velocity experimentally with the results of calculations using the equations of Fukano and Kariyasaki (1993) and Sudarja et al (2018) shows conformity with less than 10% of error margin, while Nicklin et al (1962) is ±30%.

Analisa variasi temperatur terhadap nilai kekerasan aluminium pada proses squeeze casting Tri Cahyo Wahyudi; Asroni Asroni
TURBO [Tulisan Riset Berbasis Online] Vol 11, No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2338

Aluminum is a non-ferrous metal and has the advantages of light specific gravity, corrosion resistance. Aluminum can also be used in the manufacture of pistons, engine blocks, wheels, drums. Squezze casting is a casting process, where molten metal is poured and pressure is applied until the solidification process is complete. Using hydraulic pressure, this technique is able to improve the physical and mechanical properties, especially on aluminum base material. The research method uses the Squeeze Casting process with temperature variations of 300ºC, 400ºC, 500ºC, the pressure is 60 seconds,the pressure is 5 tons. Pressing time for 75 seconds and Vickers hardness test. The results of the highest hardness value are in specimens with a temperature of 500ºC, namely with a value of 60.2 HVN, and for the lowest hardness value are found in specimens with a temperature of 300ºC with a value of 48.9 HVN. As well as the results of the hardness test another is at a temperature of 400ºC to get a hardness value of 51.1 HVN. Based on the hardness test that has been carried out the most optimal hardness value is on a specimen with a temperature of 500ºC.

Analisa porositas alumunium alloy terhadap variasi temperatur pada proses squeeze casting semi solid Asroni Asroni; Tri Cahyo Wahyudi; Adek Tri Setiawan
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 1 (2023): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2587

Direct squeeze casting is a process in which molten metal is cooled by applying pressure directly which aims to prevent gas porosity and shrinkage in a material. This process has the advantage of minimizing the occurrence of gas porosity and shrinkage, so there is no material disposal. The purpose of this study to determine the results of good porosity in aluminum Alloy materials with squeeze casting process. The research method is experimental by designing and making test samples of laboratory scale casting squeeze casting. The test was conducted with a variation of 300oC, 400oC, and 500oC pressure of 176 MPa, long pressing 75 seconds, holding time 9 minutes, the specimen was then tested to determine how the influence of mold temperature variations on the results of porosity and density. From the results of the study it can be concluded that the porosity defects of the casting are influenced by the given temperature variation and constant pressing. Many air cavities are trapped in the object product, the more porosity defects that will affect the resistance of the specimen, because the more the object product is solid or reduced porosity defects, the resistance of the specimen will increase. The smallest or good porosity value is shown by specimens with a temperature variation of 5000C which is 17.96%.

Pengaruh Variasi Waktu Celup Terhadap Ketebalan Lapisan Dan Pantulan Cahaya Pada Proses Elektroplating Tembaga Yuwono, Yuwono; Asroni, Asroni; Wahyudi, Tri Cahyo; Surono, Bambang
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 1 (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.v13i1.3319

Elektroplating adalah proses pelapisan logam dengan logam lain di dalam suatu larutan elektrolit dengan pembiasan arus listrik. Pelapisan metode elektroplating dapat menghasilkan permukaan yang memiliki karakteristik sesuai dengan logam pelapis. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh waktu pelapisan terhadap hasil pantul cahaya dan ketebalan lapisan pada plat baja karbon rendah dengan panjang 70 mm, lebar 35 mm dan tebal 3 mm. Metode penelitian yang digunakan yaitu metode eksperimen dengan variasi waktu pencelupan 5 menit, 10 menit dan 15 menit. Kondisi pelapisan menggunakan tembaga sebagai logam pelapis (anoda) dengan dua buah anoda yang berada di sisi kanan dan sisi kiri katoda, pada jarak antara anoda-katoda 5 cm. Hasil yang diperoleh dari penelitian ini adalah dengan variasi waktu pencelupan elektroplating tembaga yang dilakukan, nilai pantulan cahaya dan ketebalan lapisannya meningkat, yaitu pada waktu pelapisan 5 menit mendapat ketebalan lapisan 0,27 mm dan nilai pantulan cahaya 14,2 lux. Pada waktu pelapisan 10 menit mendapat ketebalan lapisan 0,77 mm dan nilai pantulan cahaya 19,5 lux. Pada waktu pelapisan 15 menit mendapat ketebalan lapisan tertinggi 0,99 mm dan nilai pantulan cahaya tertinggi 25,1 lux

DESIGN, MODELLING DAN STRESS ANALYSIS PADA FRAME INCINERATOR DENGAN VARIASI BEBAN DARI SAMPAH ANORGANIK Praharsa, Rinaldi; Asroni, Asroni; Surono, Bambang
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.3008

Alat Incinerator adalah tempat pembakaran sampah dengan temperature suhu yang tinggi dan terintegrasi dalam ruangan bakar yang tertutup serta terisolasi dengan baik [1]. Design alat incinerator bersistem wet scrubber ini bertujuan untuk mengurangi limbah sampah anorganik pada rumah tangga [2], serta mengurangi polusi asap pada saat proses pembakaran khususnya di wilayah Kota Metro, yang terletak di Provinsi Lampung sehingga ramah terhadap lingkungan. Salah satu faktor dalam pembuatan design, modelling diperlukan adanya komputer atau laptop yang memiliki spesifikasi tinggi, serta terpasang software aplikasi Autodesk Inventor Professional dan software SolidWorks, di beri perangkat tambahan seperti keyboard, mouse, cooling pad, dan alat cetak kertas agar memudahkan dalam pembuatan desain modeling. Berdasarkan uraian di atas penelitian akan memfokuskan design, modelling dan stress analysis pada frame incinerator dengan variasi beban dari sampah anorganik. Tujuan dari penelitian ini yaitu untuk mengetahui design modelling incinerator, serta jenis dan geomteri dari material frame yang akan digunakan, dan simulasi analisa tegangan, regangan, deformasi pada frame incinerator. Metode penelitian yang dilakukan yaitu dengan membuat design modelling menggunakan software Autodesk Inventor Professional dan simulasi analisa frame menggunakan software SolidWorks. Pengujian yang dilakukan dengan variasi beban pada frame yaitu beban dari alat incinerator, beban dari alat incinerator dengan kapasias sampah 250 kg dan beban dari alat incinerator dengan kapasitas sampah 500 kg. Dari design modelling incinerator memiliki dimensi (PxLxT) 276,87 x 90,2 x 193,5 cm, geometri frame 50 x 50 mm dengan tebal plat 5 mm, jenis material steel ASTM A36, dari hasil simulasi analisa tegangan, regangan dan deformasi pada frame incinerator dapat disimpulkan bahwa dengan berat ruang chamber, ruang burner dan wet scrubber diberi kapasitas sampah 500 kg maka frame yang digunakan masih di bawah tegangan ijin material, sehingga aman untuk digunakan.

Co-Authors Adek Tri Setiawan Adi Chandra Ahmad Zainuri Anindito Purnowidodo Bahtiar Abdul Rahman Billy Permadi Bramestyo, El Alan Calista Anjani Dwiputri Deendarlianto Dicky Tyagita Dien Fahlevi Dwi Irawan Eko Budiyanto EKO BUDIYANTO Eko Nugroho Eko Nugroho Eko Nugroho Fhela Vhantoria Ningrum Firnandi, Angga Giri Halim I Wayan Suarca Indarto Indarto Iwan Zulfikar Jatmoko Awali Mafruddin Mafruddin Moch. Agus Choiron Naduta, Oktiardi Nanang Tawaf Nurkholis, Deni Nurlaila Rajabiah Nurvan Wijanarko Oktavia, Ravelina Praharsa, Rinaldi Pramono, Atik Rae, Ade Rahmat Rudiansyah riswanto riswanto Sri Zanariyah Sulis Dri Handono Surono, Bambang Thohirin, Muh Thohirin Tri Cahyo Wahyudi Tri Cahyo Wahyudi Untung Surya Dharma Untung Surya Dharma, Untung Surya Venty Meilasari Wahidin Wahidin Wahyudi, Tri Cahyo Yogi Saputra, Yogi Yuwono Yuwono

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