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All Journal JHP17 (Jurnal Hasil Penelitian) Jurnal Rekayasa Mesin MEKANIKA - JURNAL TEKNIK MESIN Share : Journal of Service Learning
Edi Santoso
Universitas 17 Agustus 1945, Jl. Semolowaru 45, Surabaya
Arts Humanities Energy Engineering Mechanical Engineering Social Sciences Other

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ANALISA PENGARUH PANJANG PIPA INLET DAN PANJANG PEGAS KATUB BUANG TERHADAP PERFORMANCE POMPA HIDRAM Santoso, Edi; Utomo, Gatut Priyo; Martini, Ninik
JHP17 (Jurnal Hasil Penelitian) Vol 1 No 01 (2016)
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas 17 Agustus 1945 Surabaya

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Abstract

Hidram pump is one of the water pumps are energy efficient andenvironmentally friendly. Pump hidram an effective technology in the field ofenergy pumping by using the momentum of the water (water hammer) to raisethe water, so the pump hidram one water pump that does not use fuel andelectricity. Effectiveness hidram pump performance is affected by severalparameters such as the diameter of the pipe, reservoir height, exhaust valve, theair tube on hidram pump, inlet pipe length. This study aimed to observe andanalyze the effect on the length of the inlet pipe to the pump hidram highdischarge pumps and pumping. This research method through the design of thepump installation hidram and observation influence the inlet pipe length (6 m, 8m, 10 m), and the observation of the effect of the length of the exhaust valvespring (7 cm, 8 cm, 10 cm) to the pressure value (H) and the value of discharge(Q) to the pump performance hidram. The test is performed in ProductionProcess Laboratory August 17, 1945 University of Surabaya. The longer thepipe, the flow in the pump inlet hidram (Q) generated will be even greater. So inthe above study also directly proportional to the value of head (H) anddischarge rate (Q) on the pump performance hidram. So the value of theexisting pressure in the pump hidram with maximum value is generated headwith value - average (H) 1.41 bar and the discharge of water produced with -average (Q) 21 liters / min. This is because the moment of greatest impact onthe water valve.Keywords: Pump Hidram
ANALISA PENGARUH ELECTROLESS PLATING ABU DASAR BATU BARA SEBAGAI PENGUAT KOMPOSIT MATRIKS LOGAM TERHADAP PRODUK REAKSI YANG TERBENTUK PADA PERMUKAAN ABU DASAR BATUBARA santoso, edi; Seputro, Harjo; Himawan, Eka Puji
JHP17 (Jurnal Hasil Penelitian) Vol 1 No 02 (2016)
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas 17 Agustus 1945 Surabaya

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Abstract

An electroless plating process that does not use electric current in the coating process. Coatings that occurs due to the reaction of reduction and oxidation of [ermukaan objects, thus forming a layer of metal derived from the metal salt. Because it does not use an electric current in the electron exchange coating process happens more slowly. The purpose of this study is to see the reaction products formed on the surface of coal bottom ash results electroless plating which is affected by variations in the weight of aluminum and temperature oxidation by testing the SEM-EDX. Results of SEM-EDX will be the reaction products formed by using statistical software version PCPDF WIN 2:01. From the test results SEM-EDX with magnesium weight variation and temperature variation affects the oxidation Wt%-forming elements in it but does not affect the elements formed where for all specimens produce similar reactions, namely Aluminium Silicate Al2SiO5.Keywords: Composites, electroless plating, the reaction products formed
ANALISA PENGARUH VARIASI MEDIA PENDINGIN DAN WAKTU AGING PADA PERLAKUAN PANAS T6 TERHADAP STRUKTUR MIKRO KOMPOSIT ALUMINIUM ABU DASAR BATUBARA Susanto, Juli; Seputro, Harjo; Santoso, Edi
JHP17 (Jurnal Hasil Penelitian) Vol 1 No 02 (2016)
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas 17 Agustus 1945 Surabaya

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 Aluminium is a metal which has a mild nature, corrosion resistance, and electrical conductors that are used as matiks. Bottom ash coal used for reinforcement which is useful for producing aluminum composite with excellent mechanical properties and low cost. Besides the mechanical properties of aluminum can be enhanced by the addition of alloying elements (alloying) and the heat treatment process (heat tretment). The purpose of research is a comparative changes in microstructure before and after T6 heat treatment. This research will look at the changes in the microstructure of aluminum composite bottom ash coal that have undergone a process of T6 heat treatment that includes, (solid solution) is done at a temperature of 540 °C with a holding time of 6 hours, (quenching) with media cooling water, salt water (brine), oil, and (aging) with aging time of 2 hours, 4 hours, and 6 hours at a temperature of 180 °C From the results of tests performed on the aluminum composite material coal bottom ash, before and after T6 heat treatment process shows that. Granules greatest average diameter of the grain is shown by the media granules with salt water cooling 6-hour holding time for 165,3pm, and the smallest is 95,58pm with water cooling media holding time 6 hours, while aluminum composite granules of coal bottom ash without treatment equal to 158.4 pmKeywords: aluminum, coal bottom ash, heat treatment, quenching, aging, microstructure
ANALISA PENGARUH VARIASI TEGANGAN LISTRIK DAN JARAK ANODA DENGAN KATODA PADA PROSES ANODISASI TERHADAP TINGKAT KILAP MATERIAL KOMPOSIT AL – ABU DASAR BATUBARA Santoso, Edi; Rohman, Fatehur
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 02 (2015): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Composites have been developed in the world of manufacturing especially Metal Matrix Composites ( MMCs ). It is light resistant to corrosion, and mechanical properties has been successfully repaired in variousstudies, make this material superior in terms of durability. But the appearance need to be improved to obtain a highdecorative value through anodizing process. Coloration process using this anodizing method has been used forcoloring aluminum metal. Anodizing process carried out by the independent variable electrical voltage between 8,10, and 12 Volt and anode cathode distance 0.10, 0.15, and 0.20 m with 10 minutes of processing time. Colorationresults are tested using test equipment gloss sheen Micro-Tri-Gloss with reflection angle of 85. The results showedthat the variation of the electric voltage supplied to the anodizing process proved to be able to give much influenceon the vulnerable 8 , 10 , and 12 Volt. Material reflectance values tend to decrease. This happens because thehigher the voltage , the greater the material pore. The same is shown on the chart the influence of sulfuric acidconcentration and the voltage of the pore diameter. In the graph shows an increase continuously - as you constantlygiven electrical voltage. Anode cathode distance variation on the anodizing process also proved sufficient to providea significant influence on susceptible 0.10 , 0.15 , and 0.20 m. Material reflectance value tends to increase with theaddition of anode cathode spacing. Such things happen because of the obstacles posed increasingly stable , theformation of smaller pore structure and equitable causes deposition of dye attached to the surface of the object isflat and the color quality is increasing. The highest reflectance values obtained at a voltage of 8 volts of electricitywith the anode cathode spacing 0.15 m. While the lowest reflectance values obtained at a voltage of 10 volts ofelectricity with the anode cathode spacing 0.10 m.Keywords : anodizing , voltage, anode cathode spacing , reflectance
STRUKTUR MIKRO BAHAN PROPELLER DARI KOMPOSIT ALUMINIUM 6061-ALUMINIUM OXIDE DENGAN METODE SQUEEZE CASTING Santoso, Edi; Faizin Aswanto, Muhammad; Rigi Santoso, Achmad
MEKANIKA: Jurnal Teknik Mesin Vol 2 No 01 (2016): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

The composite is a combination of two or more materials that form a bond, in which eachmaterial has different elements and forms a new material. One way to improve themechanical properties of composite materials is by heat treatment T6 consisting of threestages: 1. Solution treatment, 2. Quenching, 3. Artificial aging. The purpose of this study isas a comparison between the influence of type variations and temperature of cooling mediato the change of shape, dimensions, distribution of hardness and microstructure after andbefore T6 process of composite material aluminum 6061-aluminum oxide by squeeze castingmethod. In the process of T6 is done solution heat treatment at temperature 530℃ for 2 hoursand aging at temperature 180 ℃ for 2 hours. Specimen 9 with variations of coolant mediatype (water, brine, and oil SAE 40) and variations of coolant media temperature (roomtemperature, 70℃, dan 110℃). From the result of measurement and testing conducted showthat, changes in shape and dimensions are irregular due to non-uniform cooling rates. Thevalue of hardness increases after the heat treatment process and the value of hardness thatexist in the variation of the type and temperature of irregular cooling media, because it isinfluenced by the internal condition of the material. XRD microstructure testing showed thatall specimens in the compound candidate (Al, MgO, Si, and O) had a percentage value andthe compound formed differently. But the MgO compound affects changes in shape anddimension, If the value of MgO percentage is low then the change of shape and dimensionhas the biggest difference value. While the MgO is high then the change of shape anddimension has the smallest difference value
ANALISA PENGARUH VARIASI PENGELASAN ULANG DAN VARIASI KUAT ARUS PADA PLAT BAJA TERHADAP CACAT LAS DAN SIFAT MEKANIK Santoso, Edi; Mastuki, Mastuki
MEKANIKA: Jurnal Teknik Mesin Vol 6 No 2 (2020): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Perkembangan dalam dunia perindustrian pada saat ini mulai mempertimbangkan material baja untuk bahan utama dalam proses produksinya. Baja salah satu logam ferro yang banyak dipergunakan di dunia teknik,misalnya digunakan dalam bidang kontruksi, membuat alat-alat perkakas,alat-alat pertanian,komponen otomotif,dan semua struktur logam akan terkena pengaruh gaya luar yaitu berupa tekanan dan gaya tegangan gesek. Perbedaan paling mendasar adalah terdapat nilai keuletan pada logam las tersebut,dimana nilai keuletan logam las besi selalu lebih tinggi jika di bandingkan dengan logam induk. Proses pengelasan ulang atau repair dapat terjadi apabila material yang mengalami kerusakan atau cacat akibat kesalahan dalam pekerjaan di lapangan dan pengulangan pekerjaan. Karena terjadi proses pengelasan ulang ini maka akan mengakibatkan perubahan sifat mekanik dan struktur mikro pada suatu material. Pada umumnya sifat logam las besi lebih ulet,sehingga perlu dilakukan pengujian ketangguhan material untuk mengetahui sampai berapa kali pengelasan ulang atau repair dapat di lakukan. Maka berdasarkan hal tersebut di Tugas Akhir ini akan menganalisa pengaruh pengelasan ulang pada besi karbon terhadap nilai kekerasan serta terjadinya cacat di bawah permukaan yang mungkin terjadi akibat dilakukanya pengelasan ulang. Dari variasi tegangan dapat mempengaruhi hasil pengelasan. Terdapat beberapa hasil cacat las yang timbul yaitu incomplete penetration dan incomplete fusion. Terdapat kategori cacat las yang berbeda-beda pada hasil pengelasan normal dan repair. Pengujian hardness menunjukan bahwa nilai kekerasan dapat berubah disebabkan karena pengaruh perubahan deformasi pada saat pengelasan. Dari hasil tegangan 80 amper menghasilkan nilai kekerasan diangka maksimum 2,6 HRA sedangkan tegangan 160 volt menghasilkan nilai kekerasan minimum 0,5 HRA.Kata kunci: bahan ST42,kekerasan (Rockwell),metalografi,radiografi,SMAW.
Analisa Pengaruh Variasi Holding Time Dan Variasi Kadar Garam Media Pendingin Pada Perlakuan Panas Baja Aisi 1045 Terhadap Struktur Mikro Dan Sifat Mekanik Pada Logam Santoso, Edi; Setiawan, Nurdin Hadi
MEKANIKA: Jurnal Teknik Mesin Vol 6 No 1 (2020): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Pembentukan struktur martensit pada baja karbon dapat meningkatkan sifat mekanik suatu bahan salah satunya yaitu kekerasanya, dimana material baja karbon tersebut dilakukan perlakuan panas dengan dipanaskan pada temperatur austenit dan didinginkan dengan cepat. Laju pendinginan dan kadar karbon akan mempengaruhi struktur mikro yang terbentuk seperti martensit, ferit dan perlit.Tujuan penelitian ini adalah mengetahui karakteristik sifat mekanis seperti ketangguhan baja dan kekerasan baja pada baja AISI 1045 yang telah diberi proses heat treatment dan dilakukan proses quenching menggunakan media pendingin air dengan variasi hoding time 25 meni, 30 menit, 35 menit dan variasi media pendingin kadar garam 500 gram, 625 gram, 700 gram. Kemudian dilakukan pengujian struktur mikro dan pengujian sifat mekanik pada logam untuk mengetahui struktur mikro, tingkat kekerasan, tingkat kekuatan, tingkat elastisitas dari baja AISI 1045. Hasil dari pengujian kekerasan menunjukan harga kekerasan terkeran pada spesimen holding time 35 menit dan pendinginan 700 gram adalah 60, HRC dan struktur mikronya terdiri dari pearlite dan martensite.Kata kunci : baja aisi 1045, proses quenching, kadar garam, holding time.
Analisis Pengaruh Variasi Temperatur Pemanasan Dan Holding Time Pada Perlakuan Panas Baja ST-42 terhadap Sifat Mekanik Santoso, Edi; Martini, Ninik
MEKANIKA: Jurnal Teknik Mesin Vol 7 No 1 (2021): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Hardening adalah salah satu jenis proses perlakuan yang bertujuan untuk memperbaiki sifat mekanik diantaranya untuk memperoleh nilai kekerasan dan kekuatan yang lebih baik. Hardening dilakuakan dnegan memanaskan material sampaI ke tempertur austenite, ditahan pada temperature tersebut untuk waktu tertentu dan dilakukan pendinginan cepat dengan media pendingin tertentu. Pada penelitian ini menggunakan material baja ST-42 yang termasuk golongan baja rendah dan dilakukan proses laku panas hardening. Pada proses laku panas hardening ini dilakukan dengan memberikan variasi pada temperature pemanasan sebesar 825°C, 875°C, 925°C dan variasi pada holding time sebesar 20 menit, 25 menit, 30 menit setelah itu dilakukan Pengujian Tarik. Dari hasil Pengujian Tarik yang dilakukan,  didapatkan Kekuatan Tarik Maksimum ( UTS ) yang terbesar pada variasi temperature pemanasan  825 0C dan holding time 25 menit, yaitu sebesar  687kg/?mm?^2  dan Kekuatan Tarik Maksimum terkecil  pada variasi temperature pemanasan 8250C dan holding time 30 menit yaitu sebesar 445kg/?mm?^2 .Kata kunci: Hardening, Temperatur Pemanasan, Holding Time, Baja ST-42
Analisa Pengaruh Perlakuan Panas Tempering Dengan Variasi Temperatur Dan Holding Time Terhadap Struktur Mikro Baja EMS 45 Santoso, Edi; Martini, Ninik; Mufti, Mohammad
MEKANIKA: Jurnal Teknik Mesin Vol 7 No 1 (2021): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Baja EMS 45 merupakan baja karbon sedang yang mempunyai komposisi seperti berikut: 0,52% C, 0,27% Si, 0,65% Mn, 0,15% P, 0,002% S, 0,02% Cu. Berdasarkan penggunaanya baja jenis ini dapat dikembangkan untuk memiliki sifat mekanik keras, kuat, tangguh, dan keuletan yang baik dengan cara proses perlakuan panas.Pada penelitian ini digunakan proses perlakuan panas hardening 9000C, holding time 60 menit, quenching media air dan dilanjutkan dengan proses tempering.  Variasi temperatur tempering 5000C. 5500C, 6000C dan variasi waktu penahanan tempering 30, 60, dan 90 menit. Pengujian yang digunakan adalah uji struktur mikro.Dari hasil pengujian  struktur mikro pada baja EMS 45, pada temperature kamar struktur mikronya  ferit-perlit,  setelah dilakukan heat treatment hardening 9000C, holding time 60 menit dan didinginkan cepat dengan media air mengalami perubahan menjadi struktur martensit. Setelah dilakukan tempering pada temperatur 5000C, 5500C, dan 6000C dan holding time 30, 60 dan 90 menit terjadi lagi perubahan struktur dari martensit berubah menjadi martensit temper.
STRUKTUR MIKRO CORAN KOMPOSIT Al 6061 + ABU BATUBARA SETELAH PERLAKUAN T6 Ahmad, Zainun; Santoso, Edi
JHP17 (Jurnal Hasil Penelitian) Vol 1 No 01 (2016)
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas 17 Agustus 1945 Surabaya

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Heat treatment on the aluminum alloy is done by heating until a singlephase was then arrested a few moments and forwarded by rapid cooling to nothave time to change to another phase. If the material was left for a certainperiod of time then there was the process of aging (aging). Changes will occurin the form of precipitation (precipitation) The second phase begins with theonset of nucleation and atom clusters that became the beginning of theprecipitates. This precipitates can increase the strength and hardness. Thisprocess is the age hardening process called natural aging. If after rapid coolingthen heated again to below the solvus temperature (solvus line) then detained inthe long term and followed by slow cooling in the air called artificial agingprocess (artificial aging). This study aims to determine the microstructure ofwhat is formed from a material with a temperature variation of aging (200oC,225oC, 250oC) and holding time (8 hours, 12 hours, 16 hours) to determine howmuch influence the variables, can be analyzed through testing SEM EDXA.From the test results of SEM-EDXA it can be determined microstructure formedin 6061 + Al composite coal bottom ash, which is composed of aluminum oxidecompound of Al 2 O 3 and MgO.Keywords: microstructure, composites, coal bottom ash
Co-Authors Dewantara, Muhammad Celvin Djoko Sulistyono, Djoko Faizin Aswanto, Muhammad Fatkhurrohman Fatkhurrohman, Fatkhurrohman Gatut Priyo Utomo, Gatut Priyo Harjo Seputro, Harjo Himawan, Eka Puji Ilhamsyah, Garuda Cakra Ismail Ismail M. Sahrul Maulana Mastuki Mastuki Moh. Mufti Moh. Nor Ali Aziz Mufti, Mohammad Ninik Martini Pratama, Muhammad Zidane Prayoga, Indrajid Ramadhan, Syaiful Alan Rigi Santoso, Achmad Rohman, Fatehur Rusnaldy Rusnaldy Sampurna, Edwin Ramadhani Setiawan, Nurdin Hadi Susanto, Dani Susanto, Juli Utomo, Mohamad Diky Dwi Yulianto, Adam Eko Zainun Ahmad, Zainun