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All Journal Jurnal Energi Dan Manufaktur Rotasi Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN R.E.M (Rekyasa Energi Manufaktur) Jurnal Journal of Mechanical Engineering Science and Technology Turbo : Jurnal Program Studi Teknik Mesin Spektra: Jurnal Fisika dan Aplikasinya STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Elemen Jurnal Teknologi Informasi dan Pendidikan Jurnal Energi dan Teknologi Manufaktur J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Jurnal Techno Bahari

Gaguk Jatisukamto

Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Author-ID : 291603

Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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ANALISIS KETAHANAN KOROSI PIPA A53 PADA LINGUNGAN OIL SLUDGE DENGAN METODE C-RING Rony Agista Apriansyah; Sumarji Sumarji; Gaguk Jatisukamto
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Corrosion is the degradation of the material surface due to reaction with the environment. Steel pipe is one of the materials vulnerable to corrosion because the piping system is always in contact with the outside environment. This research have a purpose to know influence of cold working about corrosion resistance pipe A53 on oil sludge salt water and oil sludge pond environment with c-ring method. Oil sludge is sediment of crude oil thats contain water, sediment, and oil thats can be processed again. The cold working process is carried out by providing bending loads of 114 kg, 140 kg, and 160 kg, and one material without bending. Process of corrosion testing uses weight loss method by weighing the material before it is corroded and after corrosion. Result of test showed that there was an increase of hardness on the material with bending load of 114 kg, 140 kg, and 160 kg respectively of 103.33 BHN, 134.00 BHN, and 187.66 BHN, while the material without bending had a hardness of 93.33 BHN. Corrosion rate on material without bending with oil sludge salt water is 2,12 x 10-2 mmpy while in oil sludge pond equal to 1,67 x 10-2 mmpy. Materials with bending loads of 114 kg, 140 kg, and 160 kg have a corrosion rate of 2.35 x 10-2 mmpy, 2.88 x 10- 2 mmpy, and 4.18 x 10-2 mmpy on oil sludge salt water, and 1.19 x10-2 mmpy, 2.15 x 10-2 mmpy, and 3.09 x 10-2 mmpy on oil sludge pond. Oil sludge of salt water is more reactive than oil sludge pond because it contains sea water composed of NaCl compounds which is a corrosive environment .The given bending load results in strain hardening followed by increased energy on the material so that the corrosion rate increases. Cold treatment provided resulted in cracks on the surface of the material so that the corrosion was localized to the crack and formed pitting. Keywords : A53, Oil Sludge, Strain Hardening, Weight Loss

ANALISIS STRUKTUR STATIS PROVISION CRANE DENGAN SOFTWARE ANSYS 16.2 Widyaningrum Febriolita; Jatisukamto Gaguk; Ilminnafik Nasrul
ROTOR Vol 11 No 1 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Provision crane is one type of crane used for loading and unloading on ships. Material provision cranes used in this study are structural steel with a cross-section of hollow pipes. This study aims to analyze the strength and equilibrium of the structure of provision cranes. The research methodology used is the analysis of finite element analysis with Ansys 16.2 software. The results of the structural analysis show that the maximum deflection occurs at the end of the boom arm, namely aks max = 0.93843 mm; σymaks maximum yield stress = 36,233 MPa; the maximum yield strain εymaks = 0.027632%. Key Words: provision crane, finite element method, Ansys 16.2, δmaks, σy maks

PENGARUH WAKTU GESEK FRICTION WELDING TERHADAP KARAKTERISASI BAJA AISI 1045 DENGAN SUDUT CHAMFER 15 DERAJAT Riko Septian; Gaguk Jatisukamto; Salahuddin Junus
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Friction welding is a technique by rubbing between two metal surfaces to produce a heat source, causing the union between the two metal surfaces without using filler metal. The purpose of this research is to improve the mechanical strength of metal welded joints 1045. The research method is done by rubbing between the two metal surfaces with the time variation of friction 25 seconds, 35 seconds, 45 seconds and 55 seconds. Friction time in 45 seconds able to get the highest tensile strength about 703,835 N/mm2 and get fracture in main metal. In other, at the time of friction 25 seconds reach its low tensile strength about 429,671 N/mm2 and occured a fracture in connection welds. Best hardness distribution obtained at the time of friction 55 seconds with a value of 270 BHN in hardness weld metal, the hardness value inleft part of HAZ reach 252 BHN and hardness value of right part of HAZ reach 247.6 BHN. Lowest hardness obtained at Friction time in 25 seconds with welding metal hardness of 250 BHN, hardness value in left side HAZ reach 240.3 BHN and the right sideof reach 236.6 BHN. Time friction affect to the microstructure and mechanical properties of AISI 1045. Smaller crystal structure will be block the movement of the dislocation, so that the mechanical properties of the metal are getting better, and conversely when crystal structuresare formed getting greater, the mechanical properties of the material will decreases. Keywords: friction welding, friction time, tensile strength, hardness, metallography.

ANALISIS EFISIENSI PADA GENERATOR 12 SLOT 8 POLE Ayu Martha Lestari; Jatisukamto Gaguk; Muttaqin Zainul Aris
ROTOR Vol 11 No 1 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Wind energy can be used as an electric energy generator, known as a Bayu Power Plant (PLTB). The PLTB component consists of wind turbines, generators, and batteries. The efficiency of the generator is influenced by the loading system on the power plant, which includes the use of data logger and controller components. The study aimed to find out the efficiency of the 12 Slot 8 Pole generator. The research method uses a MagNet Software simulation, with variables: in the form of R = 15 resistance and rotor rotation n = 1000 - 10,000 rpm. The results of the study show that the efficiency of the generator and the circuit starts to stabilize at rotor rotation n = 3000 rpm; highest efficiency when rotor rotation n = 9000 rpm with efficiency ηmax = 90,04614%; average efficiency ηav = 88.867%. Keywords: PLTB, 12 Slot 8 Pole Generator, MagNet Software, efficiency.

ANALISIS SIFAT MEKANIK KOMPOSIT LAMINA BERPENGUAT SERAT KACA WOVEN DENGAN MATRIKS UNSATURATED POLYESTER 2504 APT Naafi' ul Amri; Gaguk Jatisukamto; Sumarji Sumarji
ROTOR Vol 12 No 1 (2019)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Polymer composites has anisotropic properties, if it receives stress from outside it will increase deformation in all directions. This study aims to determine the effect of composites lamina made from woven glass fibers on 2504 APT unsaturated polyester on tensile and flexural strength. The research methodology used is as follows: the process of making composites using the Hand-Lay Up method, the matrix volume fraction Vfm = 69, 39%, the fiber volume fraction Vfs = 30, 38%. The research parameters observed are the x-direction stress (sx) and the y-axis direction strees, (sy). The results obtained are the y-axis, (sy) = 0.8% greater than the x-axis. The flexural strength of the x-axis direction, (sbx) = 57,7% greater than the y-axis direction. The difference in the value of the tensile strength occurs in the number of different fiber bonds, while the flexural strength of the y direction occurs in the fiber lamina which increases more.

PENGARUH SUDUT TEKUK (CANT) WINGLET MENGGUNAKAN AIRFOIL NACA 2215 PADA AERODINAMIKA SAYAP PESAWAT Ibrahim Hanif; Asdin Amroe An Nafi; Gaguk Jatisukamto
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Flight performance is determined by the lift coefficient (CL) and drag coefficient (CD). CL and CD values are influenced by the geometric shapes of aircraft wings. Air flow through the side of the aircraft causes wingtip vortices. Wingtip vortices add induced drag to the arms of the aircraft, creating reduced aircraft aerodynamic performance. Induced drag is a drag that results from the whirlwind of air flow due to differences in pressure on the surface of an aircraft wing. Previous studies obtained data that the use of winglets on sides with 45 o bending angle can increase the CL / CD ratio by 20.73% when compared to winglets. Winglet bend angle affects fluid flow and CL / CD ratio. The purpose of the study was to analyze the winglet bend angle of the aircraft wing aerodynamic performance. The winglet bending angle variations used were 0o, 30o, 60o, and 91.4o. Analysis of the bending angle on the winglet was done with VLAERO + software. The winglet bend angle is simulated with aircraft attack angles including - 15o, -10o, -5 o, 0o, 5o, 10o, 15o and 20o. The results showed that data for bending edge 91.4o produced CL / CD of 97.452, while wings without winglets only had CL / CD values of 80.701 at 0o attack angle. Winglets with 0o buckling angles reduce CD max at a 20o attack angle by 7.03%. The conclusion of the study informs that the addition of winglets can improve the aerodynamic performance of aircraft wings. Keywords: winglet, VLAERO +, cant angle, lift coefficient, drag coefficient.

Pengaruh Rasio Ekuivalen terhadap Traveling Speed Stationary Flame pada Meso-scale Combustor dengan Sudden Expansion Rachmad Dwi Fitriansyah; Digdo Listyadi Setyawan; Gaguk Jatisukamto
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 1 No 1 (2018): JURNAL STATOR
Publisher : STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin

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The flame on a meso scale combustor has different stability and speed levels according to the regime flame and its characteristics. This study aims to examine the effect of the equivalent ratio of LPG and air gas to the traveling speed stationary flame on a meso combustor with a sudden expansion. The research tool used is a combustor with a diameter of a sudden expansion of 6 mm and a length of 20 mm expansion, mixer and pisco tube channels. The research parameters include fuel discharge, air discharge and flame regime where the fuel and air discharge is varied to get the regime flame and its characteristics are traveling speed. Flame regime visualization by photo flame of video cut off per frame and then processed using video editing software to get traveling speed. The results showed that the observed stationary flame was stationary asymmetric downward at the equivalent ratio ф = 0.82 and ф = 0.86 and stationary symmetric in the equivalent ratio ф = 0.90 and ф = 0.95. The lowest equivalent ratio ф = 0.82 has traveling speed = 4.41 cm / s, and the highest equivalent ratio ф = 0.95 has a traveling speed = 16.68 cm / s. The equivalent ratio ф = 0.82 to ф = 0.95 in the stationary regime flame shows that the higher the equivalence ratio, the traveling speed also increases with the number reaching 16.68 cm / s. Keywords: Meso-scale combustor, traveling speed, stationary flame, sudden expansion,

FLAMMABILITY LIMIT GAS LPG DAN UDARA PADA CYLINDRICAL MESO-SCALE COMBUSTOR DENGAN SUDDEN EXPANSION Puranggo Ganja Widtyo; Digdo Listyadi Setyawan; Gaguk Jatisukamto; Rachmad Dwi Fitriansyah
ELEMEN : JURNAL TEKNIK MESIN Vol 4 No 2 (2017)
Publisher : POLITALA PRESS

Nyala api pada sebuah combustor skala meso mempunyai batas nyala yang berbeda sesuai dengan jenis bahan bakar, debit bahan bakar dan udara serta geometri combustor. Penelitian ini bertujuan untuk meneliti batas nyala api (flammability limit) pada combustor skala meso dengan sudden expansion. Alat penelitian yang digunakan adalah combustor dengan diameter dalam inlet 4,5 mm, diameter dalam sudden expansion 6 mm dan panjang saluran sudden expansion 20 mm, mixer dan pisco tube serta dengan jenis bahan bakar LPG mix. Parameter penelitian meliputi debit bahan bakar dan debit udara dimana debit bahan bakar dan udara pada combustor dicari titik terendah dan tertinggi untuk mampu nyala. Data debit bahan bakar dan udara tersebut digunakan untuk membuat grafik flammability limit yang merupakan hubungan dari rasio ekuivalen dan kecepatan reaktan. Hasil penelitian menunjukkan rasio ekuivalen terendah pada angka ф = 0,80 dengan kecepatan reaktan V = 12 cm/s dan rasio ekuivalen tertinggi ф = 1,09 dengan kecepatatn reaktan V = 17,98 cm/s. Batas kecepatan reaktan tertinggi V = 19,84 cm/s dan batas kecepatan terendah V = 11,57 cm/s. Grafik flammability limit yang terbentuk pada combustor dengan diameter dalam saluran sudden expansion 6 mm yang menggunakan bahan bakar gas LPG berada pada zona cenderung miskin, karena mempunyai rentang rasio ekuivalen dari ф = 0,80 sampai ф = 1,09.

PENGARUH VARIASI WAKTU GESEK FRICTION WELDING PADA BAJA AISI 1045 DENGAN SUDUT CHAMFER 15o TERHADAP SIFAT MEKANIKNYA Rahma Rei Sakura; Salahuddin Junus; Gaguk Jatisukamto; Riko Septian
ELEMEN : JURNAL TEKNIK MESIN Vol 4 No 2 (2017)
Publisher : POLITALA PRESS

Komponen mesin dapat diproduksi dengan variasi metode manufaktur seperti, penempaan, permesinan, pengecoran, atau metode pengelasan. Pemilihan metode manufaktur berdasarkan biaya produksi untuk setiap bagian pada komponen tertentu. Friction welding sebagai proses produksi masal merupakan metode manufaktur yang diminati untuk penggabungan dua material. Proses friction welding pada baja AISI 1045 dilakukan dengan menggesekkan kedua permukaan baja. Variasi waktu gesek yang digunakan yaitu 25, 35, 45, dan 55 detik kemudian dilakukan pengujian tarik, kekerasan, dan metalografi. Kekuatan tarik tertinggi yaitu 703,84 N/mm2 pada waktu gesek 45 detik. Kekerasan yang terbaik didapat pada waktu gesek 55 detik dengan nilai kekerasan 270 BHN. Struktur kristal dengan butiran halus akan menghambat dislokasi, sehingga mendapatkan sifat mekanik baja yang baik.

ANALISIS PENGARUH VANE TERHADAP KARAKTERISTIK DISTRIBUSI TEKANAN AIRFOIL DOUBLE-SLOTTED FLAP PESAWAT N2XX Gaguk Jatisukamto; Mirna Sari; Gembong Djoni Putranto
ELEMEN : JURNAL TEKNIK MESIN Vol 4 No 2 (2017)
Publisher : POLITALA PRESS

Kestabilan pesawat terbang ditentukan oleh disain airfoil sayap dan ekor. Perbedaan aliran udara antara permukaan atas dan bawah airfoil menghasilkan perbedaan tekanan sehingga menyebabkan gaya angkat (lift) pada sayap. Perbedaan tekanan udara pada permukaan sayap dinyatakan dengan pressure coefficient (cp), yaitu perbedaan tekanan statik lokal dengan tekanan statik aliran bebas. Koefisien lift (Cl) adalah rasio antara gaya angkat (lift) dengan tekanan dinamis. Peningkatan angka Cl sebesar 20,4% pada riset sebelumnya diperoleh berdasarkan simulasi penambahan flap. Penelitian ini bertujuan menganalis flap dengan menambahkan vane (double slotted flap). Metodologi penelitian dilakukan dengan simulasi Computational Fluid Dynamic (CFD). Hasil penelitian dapat disimpulkan bahwa perubahan koefisien lift dari kedua airfoil tidak terlalu signifikan, dimana perubahan pada bagian bawah trailing edge relatif kecil. Penambahan vane akan menambah tekanan positif pada bagian bawah airfoil sehingga menambah gaya angkat (lift).

Co-Authors ,, Sumarji Agus Triono Ahmad Adib Rosyadi Ahmad Syuhri Ahmad Wafi Al Wafi, Adib Andhika Putra, Alfian Andi Sanata Andreas Maulana Irsabudi Aris Zainul Muttaqin Artoto Arkundato Asdin Amroe An Nafi Asrofi, M Ayu Martha Lestari Azmi Saleh Cahya Alief Prasetyo Cahya Alief Prasetyo Catur Suko Sarwono Chatarina Umbul Wahyuni Dedi Dwi Laksana Digdo Listyadi, Digdo Dika Pratama, Awang Dwi Djumhariyanto Dwi Laksana, Dedi Edoward Ramadhan, Mochamad Gembong Djoni Putranto Hadi Paramu Hanifudin, Muhamad Hary Sutjahjono HT Prasetiyo, Dani Ibrahim Hanif Indra Surya Iwanata Intan Hardiatama Irsabudi, Andreas Maulana Iwan Sugihartono Kustanto, Muh. Nurkoyim Kustanto, Nurkoyim Lukman Hakim M Noer Ilman M. Noer Ilman Mahros Darsin Maijuansyah Maijuansyah Mirna Sari Mirna Sari Misto Misto Misto Misto Moh. Nurkoyim Kustanto Muh Nurkoyim Kustanto Muhammad Dimyati Nashrullah Muhammad Mukti Ali Muhammad Trifiananto Mulyadi , Santoso Muttaqin , Aris Zainul Naafi' ul Amri Nasrul Ilminnafik Pradana, Yanuar Rohmat Aji Prakoso, Muhammad Ihsan Pratama Yuli Arianto Priyo Tri Iswanto Puranggo Ganja Widtyo Putratama, Panji Hastawirata Rachmad Dwi Fitriansyah Rahma Rei Sakura Rika Dwi Hidayatul Qoryah Riko Septian Riko Septian Riyas, Nur Abdi Abdillah Robertus Sidartawan Rony Agista Apriansyah Salahuddin Junus Santoso Mulyadi Sholiha, Zhahra Hanif Siti Nur Rahmah Anwar Solichin Solichin Sugiantoro Sugiantoro Sugiantoro, Sugiantoro Sukma, Kinanti Wilujeng Sumarji Sumarji Susilo, Bili Darnanto Sutjahjono , Hary Syah, Khalif Ardian Viktor Malau Viktor Malau Wenny Maulina, Wenny Widyaningrum Febriolita yudan priyo anggono Yuni Hermawan Zainul M, Aris

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