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All Journal Jurnal Teknik Mesin Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur TEKNIK SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) JOIV : International Journal on Informatics Visualization Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Teknologi Bahan dan Barang Teknik
I Dewa Gede Ary Subagia
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Aerospace Engineering Astronomy Automotive Engineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Sifat Kekuatan Tarik dari Sambungan Tunggal Komposit Anyaman Serat Jute-Polypropylene dengan Metode Resistance Welding Ni Wayan Sugiarti; Mathias Noviantoro; I Gusti Ketut Sukadana; I Dewa Gede Ary Subagia
TEKNIK Vol. 44, No. 1 (2023): May 2023
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v44i1.41131

Abstract

Makalah ini menyampaikan hasil penelitian kekuatan tarik sambungan resistance welding (RW) dari komposit berbasis anyaman serat jute matrik polypropylene (JFRP). Metode RW dilakukan menggunakan pengaliran arus listrik pada kawat nikelin. Pada proses pengelasan untuk kawat nikelin adalah divariasikan yaitu ukuran diameter 0,3 mm dan 0,5 mm. Tujuan penelitian untuk menyelidiki kekuatan sambungan menggunakan metode RW menurut variasi diameter kawat nikelin. Pada pengujian masing-masing sampel diujikan sebanyak 5 kali pengulangan yang didasarkan pada standar ASTM D 638. Pengujian tarik dilakukan pada Universal Testing Machine (UTM) dengan cross head speed 3 mm/min, dan load cell 5 kN. Hasil penelitian menunjukkan bahwa JFRP dalam sambungan lapisan tunggal yang diikat dengan kawat nikelin berdiameter 0,5mm memiliki kekuatan tarik tertinggi dibandingkan dengan kawat nikelin berdiameter 0,3mm masing-masing adalah 213,58±0,05 MPa dan 210,34±0,05 MPa. Sementara itu, Modulus Young dari sambungan lapisan tunggal JFRP dengan diameter kawat nikelin berdiameter 0,3 mm memiliki nilai lebih tinggi dari kawat nikelin dengan diameter 0,5mm masing-masing adalah 8,16±0,05 GPa dan 8,44±0,05 GPa. Kemudian, regangan patah dari JFRP memiliki nilai yang sama 4% untuk kedua model sambungan. Kesimpulan menunjukkan bahwa pengelasan resistensi cukup menjanjikan untuk mengikat komposit termoplastik. Selain itu, diameter kawat nikelin adalah faktor penting yang mempengaruhi sifat mekanis sambungan.
PENGARUH RADIASI ULTRAVIOLET (UV) PADA PIPA KOMPOSIT JUTE-EPOKSI TERHADAP BEBAN KOMPRESI Wawan Saputra, I Gede; Adi Atmika, I.KT; Ary Subagia, I.D.G
Jurnal Teknologi Bahan dan Barang Teknik Vol 12, No 1 (2022)
Publisher : Balai Besar Bahan dan Barang Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37209/jtbbt.v12i1.233

Abstract

Pengaruh radiasi UV pada pipa berbahan komposit serat jute epoksi matriks telah diteliti. Adapun tujuan penelitian ini untuk mengamati pengaruh radiasi UV terhadap sifat mekanik (pembebanan kompresi) pipa berbahan komposit. Percobaan skala laboratorium telah dilakukan dengan membuat benda uji pipa yang terbuat dari komposit. Komposit terbuat dari 3 lapis serat jute dan matriks epoksi. Adapun pembuatan benda uji dilakukan melalui proses cetakan vakum injeksi (VIM). UV (ultraviolet) dikondisikan dengan memadukan lampu Halogen 300W, lampu UVC T5 8W, lampu bohlam reflektor 40W, dan lampu UV GNB BLB 13W sesuai standar ASTM D2166M-16. Proses penyinaran UV pada pipa komposit dilakukan selama 72 jam dengan temperatur tetap 50o C. Hasil eksperimen menunjukkan bahwa terjadi penurunan tegangan kompresi pada pipa komposit dengan perlakuan radiasi UV, rata-rata sebesar 30% terhadap kontrol. Sedangkan, mode patahan dari pipa komposit setelah pembebanan kompresi melalui analisa SEM didapatkan bahwa UV telah membuat degradasi matriks yang menyebabkan kegetasan dan kerapuhan. Kesimpulannya adalah bahwa radiasi UV berpengaruh terhadap sifat mekanik dan fisik dari pipa komposit.
TENSILE BEHAVIOR OF SINGLE ELBOW ASSEMBLY WITH RIVETS ORIENTATION ON JUTE/EPOXY COMPOSITE I.G.L, Aditya Pradnyana; I.G.K, Dwijana; I.D.G, Ary Subagia
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 2 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.2.81-87

Abstract

This experiment's purpose is to investigate the tension strength of the elbow joint with the variation of rivets position. The Joining was made based on jute woven fabric reinforced composite epoxy. The vacuum-assisted resin transfer molding process was employed to manufacture composites. In this joint two rivets were used in three orientations of positions such as diagonal (D), Vertical (V), and horizontal (H). In order to investigate the properties of a sample, the tensile loading was carried out. Then, the failure of samples based on the photographic method has analyzed. The test result shows that the tensile strength of joints with D orientation has the highest value compared with rivets on orientation V and H are 3.329 MPa, 2.946 MPa, dan 2.737 MPa, respectively. Additionally, the shear stress value of each rivets orientation on tangential states have D = 59.49 N/mm2, V = 47.46 N/mm2, and H = 45.35 N/mm2, respectively. It can be concluded that the rivet state orientation becomes an important factor for the tension strength of the tangential joint of the composites.
Evaluation of Bogie Bolster Centre Plate and Side Bearing under Vertical Static Loads through Finite Element (FEA) Modelling Artha Wirawan, I.P.; Ary Subagia, I.D.G; Adiatmika, I.K; Farid, A.R
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 15, No 2 (2025): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v15i2.105272

Abstract

The bolster is one of the main structural elements in railway bogies, playing the central role of transmitting vertical and dynamic loads from the train body to the wheel-sets. The mechanical behavior of an ASTM A148 Grade 80-50 material bolster under vertical static loading is examined in this work. This simulation is analyzed by applying the Finite Element Analysis (FEA) using student version software with nonlinear static analysis, which was run with a tetrahedral mesh and Newton-Raphson iteration. There are three variables, respectively, two variables as dependent, such as Von Misses Stress (VMS) and total deformation resulting from the loading condition. Then, the independent variable is a loading value based on the AAR M-202 standard. In this work, three values of loading condition were carried out, such as P1 = 536010.7 N, P2 = 854058.8 N, P3 = 1027500 N respectively. The result of the simulation shows that the maximum average stress in the critical area is 305.58 MPa, which is still less than the yield strength of the material at 390 MPa. The maximum elastic deflection of 0.102 mm is well within the AAR M-202 standard allowable values. In conclusion, bolster bogie based on ASTM A148 Grade 80-50 has reliability for static loading and is available with a safety factor according to the AAR M-202 standard.
Pengaruh Temperatur Rendah pada Sifat Bending dari Pipa Komposit Epoxy dengan Penguatan Serat Jute Pramadyanti, I.A.N; Adi Atmika, I.K; Ary Subagia, I.D.G
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 2 (2021): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i2.51243

Abstract

The experiment about the bending behavior of pipe composite based under the low-temperature treatment was carried out. As for the background of this research is that composite material become a suitable design with user need and it has behavior to substitute metal in engineering products. The research aims to investigate the effect of low temperature against to bending strength behavior of pipe from composite epoxy with jute fiber reinforcement. The low-temperature treatment was applied through an immersion process in dry ice as long as 60 minutes to produces a temperature of -33oC. The pipe composite was manufactured in lamination three layers of jute fabric using the vacuum injection molding process (VRTM). Then, the strength of the composite pipe was tested on the three-point bending method according to the ASTM D 790 standard. The testing results show that composite pipe with low-temperature treatment has a flexural strength average of about 76.559 MPa. Meanwhile, the compo-site pipe without treatment shows the strength of flexural average of about 52.435 MPa. They have the strength of flexural inclination is an average of 68%. In addition, the failures of composite in three-point bending test shows a shrank mode on the compression side and flat tearing at tension side due to the material becomes brittle. The conclusion that low-temperature treatment has an effective influence on the pipe composite mechanical properties.
Co-Authors A. Suryawan A.H. Yuwono Adi Atmika, I.K Adi Atmika, I.KT Adiatmika, I.K Alesandro Tarigan Anak Agung Istri Agung Sri Komaladewi Artha Wirawan, I.P. Atmaja, I Made Ari Dwi Suta Budiana D Farid, A.R Felipe P. Vista IV Gede Adi Yoga Saputra I Gusti Agung Kade Suriadi I Gusti Ketut Sukadana I Gusti Komang Dwijana I K. A. Atmika I Ketut Adi Atmika I Made Astika I Made Gatot Karohika I Made Putra Arya Winata I N. G. Suma Wijaya I Nyoman Gede Arya Astawa I Nyoman Suprapta Winaya I Wayan Purna Wirama I.G.A.K.C Adhi I.G.A.K.C. Adhi I.G.K, Dwijana I.G.K. Sukadana I.G.L, Aditya Pradnyana I.K. A. Atmika I.K.A. Atmika I.K.G. Wirawan I.M. Astika IGAK Cathur Adhi Mathias Noviantoro N.M.A.R. Adriani Ni Wayan Sugiarti Pramadyanti, I.A.N Putu Brahmanda Sudarsana S.P.G. Gunawan Tista Tri Siswanto Kamid Wawan Saputra, I Gede Wayan Nata Septiadi