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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

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 Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Physics 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 Holding Time dan media pendingin pada proses quenching terhadap kekerasan dan kekuatan Impact pegas daun sebagai alternatif pengganti pisau slicer penuai tebu Andreas Luki Indratmoko; Eko Nugroho; Asroni Asroni; Eko Budiyanto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 1 No 2 (2020): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

In the process of harvesting sugarcane at a sugar factory, the Sugarcane Harvester is a tractor used to harvest sugarcane equipped with a slicer knife. Nowadays slicers are still imported from abroad, and the availability is scarce and the price is still expensive. One of the efforts to find an alternative to the slicer is to use leaf springs by hardening the metal through a heat-treatment process. Namely the process of heating steel to temperatures above the critical area followed by rapid cooling called quenching. The purpose of this study was to determine the effect of holding time and the effect of cooling media on the hardness and impact strength of leaf springs and to determine the ideal holding time and the most optimal cooling media to increase the hardness and impact strength of leaf springs. As for the research method, the spring leaves were heat-treated with a temperature of 8500 C for 30 minutes and 60 minutes and then cooled using oil, saltwater, and water as media. The method used is observation, literature study, testing, and documentation. The results obtained from this study were at a temperature of 8500 C with a holding time of 30 minutes the best hardness value was 477 VHN and 0.42% increase, the best impact strength value was 0.03433 J / mm2 and 87.71% decrease, and the two cooling media, namely oil. At a temperature of 8500C with a holding time of 60 minutes the best hardness value was 534 VHN and 12.42% increase, the best value of impact strength was 0.03203 J / mm2 and 88.53% decrease, and the two cooling media were oil as well. So that oil is the most optimal medium for changing the mechanical properties of the Sugarcane Harvester slicer because the oil can carry a carbon layer from the cooling process that takes place and the cooling rate of the oil is not too fast from the cooling media of brine and water because of its viscosity. Keywords: Holding Time, Cooling Media, Hardness, Impact Strength, Quenching, Leaf Spring, Slicer.

Perancangan dan analisis electric car frame “Melumumet” menggunakan software Autodesk Inventor 2016 Munir Amrulloh; Eko Nugroho; Asroni Asroni
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 2 No 1 (2021): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Frame atau rangka merupakan bagian penting dalam sebuah alat transportasi yang menyatukan semua komponen dan guna menahan beban yang bertumpu pada frame tersebut kesalahan dalam perancangan pembebanan akan mengakibatkan ketidak nyamanan saat frame akan diaplikasikan, dan juga akan mengurangi faktor keamanan, kenyamanan pengemudi dan penumpang saat digunakan, perancangan frame yang tepat akan memberikan hasil yang optimal antara tingkat keamanan dan kenyamanan, tujuan perancangan rangka kali ini untuk mengetahui displacement yang terjadi pada pada electric car frame menggunakan software autodesk inventor 2016, mengetahui tegangan minimal dan maximal yang terjadi pada electric car frame menggunakan software autodesk inventor 2016, mengetahui safety factor yang terjadi pada electric car frame menggunakan software autodesk inventor 2016 dengan menggunakan fitur frame analysis, maka dapat diketahui fenomena yang terjadi pada struktur frame mobil listrik yang telah dirancang sebelumnya. Penelitian ini dilakukan dengan beberapa tahap metode pengerjaan yaitu : pemodelan frame dengan software autodesk inventor 2016 dengan cara membuat desain 2D terlebih dahulu, lalu merubahnya kedalam 3D, setelah desain selesai masuklah ketahap simulasi, setelah melakukan simulasi dengan beban 230 kg, 280 kg, dan 330 kg terhadap frame didapat hasil berupa displacement 0,6677 mm, 0,7243 mm, dan 0,7809 mm, tegangan maximal 23,28 MPa, 25,2 MPa, dan 27,12 MPa, tegangan minimal 0,04 MPa, 0,05 MPa, 0,06 MPa, dan angka keamanan yang diperoleh dari analisa tersebut adalah 10,3; 9,5; dan 8,8. Angka keamanan merupakan salah satu faktor utama apakah frame layak diguanakan atau tidak jika hasil yang didapat pada safety factor yaitu kurang dari 1 maka frame tersebut tidak aman saat akan digunakan.

Analisa alat uji tarik buatan lokal dengan variasi bahan teknik terhadap kekuatan hasil pengujian Nova Tri Anggoro; Eko Nugroho; Asroni Asroni
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 2 No 1 (2021): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (252.25 KB)

Alat uji adalah alat yang digunakan untuk mengukur nilai-nilai suatu bahan, seperti kekerasan, keuletan, dan elastisitas. Uji tarik merupakan salah satu pengujian untuk mengetahui keuletan suatu bahan terhadap tegangan tertentu. Penelitian ini bertujuan untuk Mengetahui nilai kekuatan uji tarik menggunakan bahan Aluminium, Besi Cor, dan Baja, serta untuk mengetahui bentuk patahan spesimen pada analisa makro. Sifat mekanik yang dicari yaitu kekuatan tarik, dan alat uji tarik merupakan buatan lokal. Hasil penelitian ini menunjukkan spesimen Aluminium pengujian pertama memiliki nilai kekuatan maksimal sebesar 20 kg/cm2, sedangkan pengujian kedua mendapakan nilai sebesar 10 kg/cm2, dan pengujian ketiga dapat nilai sebesar 9,5 kg/cm2, dengan nilai rata-rata kekuatan tarik 13,16 kg/cm2, sedangkan nilai modulus elastisitas dalam pengujian pertama dapat nilai sebesar 6,06 MPa, sedangkan dalam pengujian kedua nilai sebesar 3,03 MPa, dan dalam pengujian ketiga dapat nilai 2,87MPa, nilai rata-rata modulus elastisitas sebesar 3,98 Mpa. Pada bahan besi cor dan baja terdapat kendala, yaitu spesimen uji tidak dapat tercekam sempurna oleh pencekam yang terdapat pada alat uji. Bentuk patahan hasil pengujian pertama bahan getas dan bentuk patahan tidak sama, pengujian kedua bahan getas dan bentuk patahan sama, dan pengujian ketiga bahan getas dan bentuk patahan tidak sama.

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.

Co-Authors Adek Tri Setiawan Adi Chandra Ahmad Zainuri Andreas Luki Indratmoko Anindito Purnowidodo Atik Pramono Bahtiar Abdul Rahman Billy Permadi Calista Anjani Dwiputri Deendarlianto Dicky Tyagita Dien Fahlevi Dwi Irawan Eko Budiyanto EKO BUDIYANTO Eko Nugroho Eko Nugroho Eko Nugroho Eko Nugroho Fhela Vhantoria Ningrum Giri Halim Handono, Sulis Dri I Wayan Suarca Indarto Indarto Jatmoko Awali Mafruddin Mafruddin Moch. Agus Choiron Munir Amrulloh Nanang Tawaf Nova Tri Anggoro Nurkholis, Deni Nurlaila Rajabiah Nurvan Wijanarko Rahmat Rudiansyah riswanto riswanto Sulis Dri Handono Tri Cahyo Wahyudi Tri Cahyo Wahyudi Untung Surya Dharma Untung Surya Dharma, Untung Surya Venty Meilasari Wahidin Wahidin Wahyudi, Tri Cahyo Yogi Saputra, Yogi

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