Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Rekayasa Mesin REKAYASA JMPM (Jurnal Material dan Proses Manufaktur) BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks
Mudjijana, Mudjijana
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Computer Science & IT Education Electrical & Electronics Engineering Engineering Mechanical Engineering Physics

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Manufaktur Sampan (Canoe) Dengan Bahan Paduan Aluminium untuk Wisata Sungai Wisnujati, Andika; Mudjijana, Mudjijana; Octantha, Esron Fernando
Berdikari: Jurnal Inovasi dan Penerapan Ipteks Vol 4, No 2 (2016): August
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bdr.429

Abstract

Specific objectives and targets to be achieved are the new business entrepreneurs in the field of manufacture of canoes (canoe) for water vehicles, especially in the river Winongo and generally in places of tourism in other areas. This new entrepreneur will be made in Kampung Pojok, Sinduadi Urban Village, Mlati Sub-district, Sleman Re-gency, DIY (Winongo west side bank). Canoe manufacturing starts from the design (design) of construction which in this case ask for help 4 students of Mechanical Engineering Department and Industrial Faculty of Engineering UGM. Based on the design drawings can be calculated the amount of aluminum alloy material in the form of a 2 thick plate and pipe ¾ inch for the construction of the amplifier. The cutting of the plate is carried out with the betel in accordance with the drawing (the initial stage) and smoothed with hand grinding prior to connection with the electric welding with aluminum alloy electrodes. Similarly, the reinforcing and buoying rods are sawn with a hand saw (initial stage) and connected with an electric weld. In the end the product is tested in the flow of Winongo River, near the canoe production place in the village of Pojok, Sinduadi, Mlati, Sleman. Canoe products are tested by students of the Yogyakarta Maritime Academy. Test results should show no leakage in each canoe connection when in use and on reliable stability conditions. Keywords: Canoe, Water Vehicle, Winongo River, Reliable, Aluminium
KARAKTERISASI SAMBUNGAN SMAW BAJA KARBON RENDAH MENGGUNAKAN 3 JENIS ELEKTRODA Iswanto, Priyo Tri; Mudjijana, Mudjijana; Himarosa, Rela Adi
JMPM (Jurnal Material dan Proses Manufaktur) Vol 1, No 2 (2017): DESEMBER 2017
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v1i2.3612

Abstract

Shield Metal Arc Welding (SMAW) merupakan salah satu cara yang biasa digunakan untuk pengelasan baja karbon rendah. Kualitas sambungan las dapat dikarakterisasi dengan pengujian tarik, fatik, kekerasan Vickers, dan strukturmikro. Penelitian ini bertujuan mengkarakterisasi sambungan SMAW baja karbon rendah menggunakan 3 jenis elektroda.Penelitian ini menggunakan baja karbon rendah 0,113 %C berdiameter 19,05 mm, dilas menggunakan elektroda E7018, E7016, dan E 6013. Karakterisasi hasil lasan menggunakan  alat Universal Testing Machine, Vickers hardness test, rotary bending fatigue,  dan optical microscope.Hasil penelitian menunjukkan lasan menggunakan elektroda tipe E7018 menghasilkan kekuatan tarik maksimum, UTS : 453,73 MPa,  nilai kekerasan Vickers, HVN : 148,23 kg/mm2 , sedangkan hasil lasan menggunakan tipe E7016 dan E6013 berturut-turut UTS : 442,11 dan 406,27 MPa, HVN : 142,30 dan 119,63 kg/mm2. Kekuatan sambungan las lebih rendah dari material baja karbon rendah as received yaitu 489,47 MPa. Hasil pengujian fatik berturut-turut mempunyai nilai ketahanan fatik (Se) : 204,18; 198,95; 182,82, dan lebih rendah dari Se baja S10C yaitu 292,59 MPa. Pengamatan strukturmikro logam las untuk 3 tipe elektroda didominasi struktur ferit batas butir (GF) dan perlit.
Karakterisasi Pengecoran Paduan Al-Si-TiB dengan Variabel Suhu Die Casting Abdus Shomad, Muhammad; Wisnujati, Andika; Mudjijana, Mudjijana
Rekayasa Vol 15, No 3: Desember 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i3.15438

Abstract

This study describes the microstructure phase and the hardness value produced in metal casting with variations in metal mold temperature with the addition of Ti-B elements. gravity casting, a technique that relies solely on gravity, is used for casting metals. This objective of this study to determine the mechanical properties characterization of specimens using die casting molds by varying the mold temperature between 250°C, 350°C, 450°C and the addition of 0.05% Ti-B alloying elements. In addition, this research can determine the right temperature for metal casting by gravity casting method. The material used in this research is recycle piston Al-Si (series 4xxx). The results of hardness testing at a temperature of 250°C have produced 123.9 HVN. The microstructure of the Al-Si-TiB alloy material has dense grain boundaries. This is because the casting with the addition of the TiB element functions as a grain refiner and reduces porosity in the microstructure. So, the smaller the porosity, the stronger the hardness of the specimen or material. This is because at low mold temperatures, the metal casting process will freeze faster, resulting in higher hardness. In addition, the increasing temperature of the die casting mold has a tendency to change the eutectic structure of silicon to primary silicon.
KARAKTERISASI KEKERASAN DAN KEKUATAN TARIK BAJA TAHAN KARAT SS304 DENGAN VARIASI ELEKTRODA LAS BUSUR LISTRIK Wisnujati, Andika; Mudjijana, Mudjijana; Sutoyo, Sutoyo
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.2029

Abstract

This study examines the hardness and tensile strength characterization of SS304 stainless steel welded using different electrode variations in the Shielded Metal Arc Welding (SMAW) process. The research focuses on three types of electrodes: NSN 308, NSN 309L, and NSN 312, to evaluate their influence on the mechanical properties of the weld metal. Hardness testing was conducted using the Vickers method with a 200-gf load, while tensile strength testing was performed to assess ultimate tensile strength (σu), yield strength (σy), and elongation (ε). The results indicate that the selection of electrodes significantly affects the hardness and tensile properties of the welded joints. NSN 312 exhibited the highest hardness values, particularly in the weld metal and filler areas, suggesting the formation of hard phases such as martensite or chromium-rich ferrite, making it suitable for wear-resistant applications. NSN 309L demonstrated moderate hardness, indicating a more balanced microstructure that provides good toughness and ductility. NSN 308 showed the lowest hardness values, which can be beneficial for applications requiring greater deformability. In the tensile test, NSN 309L achieved the highest ultimate tensile strength 47.77 Kg/mm² and elongation 45%, suggesting an optimal balance of strength and ductility. NSN 312 exhibited the highest yield strength 46 Kg/mm², indicating better resistance to plastic deformation. Meanwhile, NSN 308 had lower tensile properties compared to the other electrodes.  Overall, electrode selection should align with specific application requirements. NSN 312 is recommended for wear-resistant applications, NSN 309L for structures requiring both strength and ductility, and NSN 308 for applications with lower mechanical stress.
Co-Authors Abdus Shomad, Muhammad Himarosa, Rela Adi Holyness Nurdin Singadimedja Octantha, Esron Fernando Priyo Tri Iswanto Sutoyo Sutoyo Wisnujati, Andika