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All Journal Journal of Mechanical Engineering Science and Technology Turbo : Jurnal Program Studi Teknik Mesin JTT (Jurnal Teknologi Terapan) International Journal of Applied Technology Research JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Jurnal Pengabdian kepada Masyarakat (Nadimas) Journal of Applied Mechanical Technology (JAMET) Jurnal Sains, Teknologi dan Kesehatan Metalik: Jurnal Manufaktur, Energi, Material Teknik

Endramawan, Tito

Universitas Muhammadiyah Metro

Author-ID : 917439

Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences

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APLIKASI STANDAR AWS UNTUK MENENTUKAN ACCEPTANCE CRITERIA PADA PENGELASAN SMAW MENGGUNAKAN NONDESTRUCTIVE TEST-ULTRASONIC TEST Endramawan, Tito; Sifa, Agus
TURBO [Tulisan Riset Berbasis Online] Vol 6, No 2 (2017): Desember 2017
Publisher : Universitas Muhammadiyah Metro

Tujuan penelitian ini adalah menentukan spesimen uji tersebut bisa diterima berdasarkan aceptance criteria AWS. Penelitian ini menggunakan material mild steel dengan nilai kekerasan 135 HVN dengan ukuran 30 cm x 20 cm x 1,2 cm yang disambungkan dengan proses pengelasan SMAW posisi 3G butt joint dengan elektroda rooting LB 52U diameter 2,6 mm menggunakan arus 70 Amper dan tegangan 380 volt, sedangkan untuk filler menggunakan elektroda LB 5218 diameter 3,2 mm dengan arus 80 Amper dan tegangan 380 volt.Metode untuk menginspeksi hasil lasan menggunakan Non Destructive Test Ultrasonic Testing (NDT-UT) dengan blok standar V1 dan V2 sebagai reference block untuk proses kalibrasi. Probe yang digunakan berupa probe sudut 700 dengan frekuensi 4 MHz merk karl deutch sesuai dengan tabel 6.7 yang hasil pengelasannya merujuk tabel 6.2 tentang UT Acceptance-Rejection Criteria pada AWS D1.1/D1.1M:2010 menurut class indication.Â Hasil pengujian menunjukkan bahwa base material dari baja karbon rendah dengan kandungan 0,193%C dan 98,713%Fe dengan nilai kekerasan rata-rata 135,2 VHN. Hasil pengujian pada ketiga spesimen diatas menunjukkan bahwa class untuk dincontinuity di kategorikan pada class D berdasarkan nilai dari frekuensi gelombang (d) yang lebih dari +8 dB sehingga discontinuity yang ada harus di accepted tanpa melihat panjang atau lokasi-nya pada lasan. Apabila ada indikasi defect yang rejected maka tindak lanjutnya adalah dengan melakukan perbaikan dengan cara gouging atau digerinda pada bagian yang mengindikasikan adanya cacat tersebut dan kemudian dilas ulang.

Kekerasan Material Pasangan Elektroda (Cu) dan Lembaran plat (Fe) Pra Proses Spot Welding Sifa, Agus; Endramawan, Tito
Jurnal Teknologi Terapan Vol 2, No 1 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i1.21

Las titik (spot welding) termasuk las tahanan listrik. Jenis ini merupakan metode yang paling banyak digunakan dan paling sederhana. Hasil proses pengelasan spot welding perlu diketahui secara detail karena akan berdampak pada kekuatan geser dan kekerasan hasil pengelasan, secara mekanik pasangan elektroda dan lembaran plat perlu diperhatikan tekanan elektroda pada lembaran plat, hal ini perlu reference sifat fisik kekerasan permukaan elektroda terhadap lembaran plat dan sebagai acuan awal pada pemilihan material pasangan elektroda dan lembaran plat dengan ketebalan 0,8 mm, maka perlu diketahui komposisi elektroda dan lembaran plat. Hasil uji pasangan material elektroda (Cu) dan lembaran plat (Fe), setelah dilakukan eksperimen uji spectrometric diperoleh bahwa elektroda memiliki kandungan Cu yang balance dan Lembaran plat memiliki kandungan Fe yang mendominasi namun memiliki Carbon kurang dari 0,25%, maka hal tersebut lembaran plat memiliki kategori karbon rendah, dan dari hasil uji kekerasan menunjukkan Elektroda memiliki nilai kekasaran 130 HV, hal ini menunjukkan bahwa elektroda kategori class 2 [10] dan lembaran plat memiliki kekasaran 128 HV, kecenderungan nilai kekasaran material elektroda lebih besar dari lembaran plat.

Design Optimization of Crashworthiness in Square Tube as Thin Walled Structure With Variations of Crush Initiator: Stripe-Parallelogram-Trigon Dionisius, Felix; Istiyanto, Jos; Endramawan, Tito; Andri, Andri
Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Crashworthiness is an ability of a vehicle structure in order to reduce injury when occurred in collision. Crashworthiness criteria are peak force (Fmax), specific energy absorption (SEA), and crush force efficiency (CFE). The part of structure of vehicle in crashworthiness is front rail which is generally tube as thin walled structure. The aim was to know the best design in thin walled square tube as specimen by variance of crush initiator which arranged holes 3 mm of diameter in shaping stripe with 4 holes, then added graded holes in parallelogram to trigon. This research used compression experiment method under quasi static loading with 30 mm/minute of actuator velocity. Optimum design was done by using Multi Criteria Decision Making (MCDM) with Simple Additive Weighting (SAW) modelling. This research presents that specimen with trigon of crush initiator is the best design with 0.98 of decision score in which crashworthiness criteria for peak force, specific energy absorption and crush force efficiency are 19193.81 N; 5100.93 J/kg; and 46.44%.

APLIKASI NON DESTRUCTIVE TEST PENETRANT TESTING (NDT-PT) UNTUK ANALISIS HASIL PENGELASAN SMAW 3G BUTT JOINT Endramawan, Tito; Haris, Emin; Dionisius, Felix; Prinka, Yuliana
Jurnal Teknologi Terapan Vol 3, No 2 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

The purpose of the research are determine acceptance criteria the specimen based on ASME standard. The research used mild steel materials with hardness 220 HVN with sized 30 cm x 20 cm x 1.2 cm then SMAW welding process position of 3G buttjoint with rooting electrode LB 52U diameter 2.6 mm used current 70 Amper and voltage 380 volt, for Filler used LB 5218 electrode 3.2 mm with current of 80 Amper and voltage of 380 volts. The welding process influenced by many factor which cause failure. The method for inspect result of weld used Non Destructive Test Penetrant Testing (NDT PT) and used ASME standard for acceptance criteria. The test results showed the discontinuity of porosity on the surface of the welded product in specimen 1 is the largest rounded 5 mm at 233 mm distance so that based on the acceptance criteria of AWS standard, the welding result is accepted and the specimen 2 there is discontinuity at 233 mm with the size of 8 mm so that Otherwise rejected. This rejected result can be improved by gouging the discontinuity and then welded.

Design and Performance Test of Aluminum Melting Furnace fueled by Used Oil endramawan, tito; sifa, agus; suwandi, dedi; dionisius, felix
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.v12i2.2402

Waste is a major problem in the world and Indonesia. Used oil is one of the liquid wastes produced by machines, both in large industrial and private vehicle engines. Handling this waste oil can be done in various ways, one of which is by using it as a liquid fuel with constant heat treatment. One of the applications of this burning is used in metal smelting equipment to melt metal waste in the community, especially those that have been collected by collectors both in the Indramayu region and Cirebon 3 region. In the design process, a simulation of the safety of the material used is carried out using solid work software using A36 steel. For the performance test, several variations were carried out including the input distance of used fuel oil at a distance of 5 cm, 10 cm and 15 cm and the opening of the used oil tap as fuel in the form of , and 1. The test was carried out using fuel oil to melt 1 kg of aluminium The results of the flow simulation process obtained data with a distance of 10 cm where the airflow is sprayed spread out in the burner and the optimal parameter at the time of smelting is that with a tap opening it will be more effective in fuel use and aluminium smelting time.

Pengaruh Pelapisan Nikel pada Tool End Mill HSS Terhadap Nilai Kekerasan dan Temperature Proses Milling Alumunium 6061 Sifa, Agus; Endramawan, Tito; Sukardi, Casiman; Aryadi, Haerul
Journal of Applied Mechanical Technology Vol 2 No 2 (2023): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jamet.v2i2.48

The machining process of dry machining milling method is a machining process without additional coolant, but this method has several problems during the process and after the machining process, namely Tool temperature can easily rise and has a major impact on tool wear, so the purpose of this research is to develop a dry machining method with variations tools that are coated with nickel, by utilizing the properties of nickel material that can withstand heat and corrosion, therefore a nickel coating is used on the tool which will affect the temperature parameters of the tool. The coating method that will be carried out is the electroplating method. This method is a metal coating method which is often called electrodeposition, or the process of depositing the coating metal on the base metal using electrolysis. This research was carried out using experimental testing methods to obtain tool temperature parameters and hardness on the tool coating. The voltage used in the electroplating process is 6 V/ 0.7 A for 5, 10, and 15 minutes to produce a nickel layer thickness of 0.024 mm in 15 minutes, so every 5 minutes the layer is 0.08 mm. The experimental testing process used the HSS tool Ø 12 / 4 F and a aluminum 6061 workpiece which resulted in an intermediate temperature that was not coated with nickel (uncoated) at 3 mm feeding spindle speed 3000 rpm the temperature reached 73.6 ºC while that which was coated with nickel (coated) the temperature only reached 58.6 ºC, and get an average hardness value on the nickel layer, which is 279.9 Hv

Effect of Solution Concentration and Anodizing Coating Time on Hardness and Thickness Coating Of 7075-O Aluminum Alloy Endramawan, Tito; Sifa, Agus; Suwandi, Dedi; Permana, Dudung Nana; Amat, Mohammad Azwar; Sukroni, Sukroni; Dionisius, Felix; Sukardi, Casiman
Jurnal Internasional Penelitian Teknologi Terapan Vol 5 No 1 (2024): February 2024
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v5i1.136

One of the materials used in ship propellers is aluminum alloy. The advantages of aluminum are that it is easy to cast and relatively resistant to corrosion. This research aims to determine the effect of heat treatment and the effect of variations in the concentration of H2SO4 and immersion time in optimal of the anodizing process on the hardness value of 7075-O aluminum alloy (as-cast aluminum alloy). The method used is solution heat treatment at a temperature of 490ºC with a holding time of 6 hours, quenching using water or oil, with artificial aging at a temperature of 120ºC with a holding time of 24 hours. In the anodizing process, a sulfuric acid solution with various concentrations of 10%, 15%, and 20% with variations in immersion time of 10, 15, and 20 minutes. The results of vickers hardness test on heat-treated specimens with water quenching accompanied by artificial aging is 137.54 HV, it is increased by 47.44%. While the results of the vickers hardness test after anodizing is 213.09 HV, it is increased by 128.42%. Where the optimum hardness value was achieved at a concentration of 15% H2SO4 and an immersion time of 20 minutes. The coating thickness is equal to 25.79 µm.

PENERAPAN TEKNOLOGI MESIN PEMISAH KULIT ARI KEDELAI UNTUK MENINGKATKAN KAPASITAS PRODUKSI UMKM KERIPIK TEMPE Suwandi, Dedi; Sifa, Agus; Endramawan, Tito
Jurnal Pengabdian kepada Masyarakat (NADIMAS) Vol 3 No 1 (2024): Jurnal Pengabdian kepada Masyarakat (Nadimas)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/nadimas.v3i1.57

Keripik tempe merupakan produk turunan dari kacang kedelai yang kaya akan gizi dan banyak manfaat untuk dikonsumsi. Permasalahan yang dihadapi produsen keripik tempe sebagian besar proses pembuatannya masih menggunakan metode manual. Contohnya proses pengupasan kacang kedelai dimana biji kedelai dipisahkan dari kulit arinya. Proses ini biasanya dilakukan oleh karyawan menggunakan tangan dan sendok. Proses pengupasan dilakukan pada saat kedelai masih hangat setelah kedelai direbus. Proses ini sangat penting karena jika kulit ari tidak dibersihkan maka akan mempengaruhi kualitas keripik tempe yang dihasilkan, keripik tempe akan memiliki rasa asam dan mudah basi. Solusi yang diberikan yaitu dengan membuat mesin pengupas kulit ari kedelai single roll. Mesin pengupas kulit ari kedelai single roll digerakan oleh motor listrik 1 phase 0,5 Hp, 1400rpm. Putaran motor listrik tersebut diturunkan menjadi 280 rpm yang menggerakan roll stanless steel bergelombang. Putaran roll menggilas kedelai yang turun dari hopper input, kemudian dibagian depan roll terdapat pemisah kulit ari dan kedelai yang sudah terkupas. Kulit ari akan turun ke bawah hopper kulit sedangkan kedelai terkupas akan keluar menuju hopper output. Kapasitas mesin pemisah kulit ari kedelai mampu mengupas 1 kg kedelai per satu menit. Semua kedelai terkupas 100% dengan 65% kulit terpisah ke bagian hopper kulit, kemudian masih terdapat 35% kulit yang terbawa ke hopper output bersama kedelai yang terkupas. Dengan mesin tersebut mitra pengguna dapat mengurangi waktu pengupasan dari 120 menit menjadi 30 menit per 100 kg.

PERANCANGAN BIOGAS MODEL LANDFILL GAS SEBAGAI BAHAN BAKAR ALTERNATIF Rohmat, yusup Nur; Sukroni, Sukroni; Haris, Emin; Endramawan, Tito; Andrian, Muhammad
EMPIRIS : Jurnal Sains, Teknologi dan Kesehatan Vol. 1 No. 3 (2024): EMPIRIS : Jurnal Sains, Teknologi dan Kesehatan, September 2024
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/1jvqzy72

The use of cooking fuel, both in businesses and households, is essential, especially given the lack of alternatives to LPG following the fuel transition. The rise in global oil prices due to fuel shortages has become a global issue. Biogas, produced through the anaerobic fermentation of organic waste by bacteria, generates methane gas that can be utilized as an alternative energy source. Therefore, a landfill gas model biogas machine was designed to convert organic waste, such as cow manure and tofu liquid waste, into alternative fuel. The machine is equipped with a microcontroller system for automatic valve operation and gas pressure monitoring. Static load simulation on the machine frame using SolidWorks software showed that the maximum stress experienced was 10.4 x 10^6 N/m², well below the material's yield strength of 203.9 x 10^6 N/m², indicating safety. The displacement simulation on the machine frame ranged between 0.1–0.2 mm in the loaded areas, and the resulting factor of safety (FOS) was 19.5, signifying a highly safe design (FOS > 1).

Pengaruh Perbandingan Fraksi Volume Serat Eceng Gondok Dan Serat Sabut Kelapa Terhadap Kekuatan Tarik Bermatrik Resin Epoxy Endramawan, Tito; Sifa, Agus; Dionisius, Felix; Sukroni; Prasettya, S.
Journal of Applied Mechanical Technology Vol 3 No 1 (2024): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/journalofappliedmechanicaltechnology.v3i1.57

The purpose of using natural fibers as reinforcement for composite materials is expected to be an alternative material to replace the used of fiberglass fibers and is expected to be able to increase the quality of water hyacinth fibers and coconut coir fibers. In this study, to determine the best tensile strength value, several experiments were carried out using the determine factor of the fiber volume fraction of 20%, 25%, 30% and the immersion factor with NaOH solution for 4 and 6 hours using a matrix in the form of epoxy resin. The test results showed that the variation of soaking in alkaline solution media (NaOH) for 6 hours with a volume fraction of 30% obtained the best tensile strength results with each type of fiber, water hyacinth fiber obtained the best results of 23.32 MPa while coco fiber the best result was 22.10 MPa.

Co-Authors A.A. Ketut Agung Cahyawan W Ahmad Farhan, Ahmad Amat, Mohammad Azwar Apriyandi, D.D. Aryadi, Haerul Azwar Amat, Mohammad Candra Irawan Haris, Emin Jos Istiyanto Kasni Sumeru Leo Van Gunawan Muhamad Ghozali Muhamad Ghozali, Muhamad Muhammad Andrian, Muhammad Nur Rohmat, Yusup Permana, Dudung Nana Pradhana, Claudha Alba Prasettya, S. Prinka, Yuliana Rudiana Sifa, Agus Sukardi, Casiman Sukroni Sukroni, Sukroni Suwandi, Dedi

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