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All Journal JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) Jurnal Ilmiah Wahana Pendidikan Madiun Spoor : Jurnal Pengabdian Masyarakat Journal of Railway Transportation and Technology GEMBIRA (Pengabdian Kepada Masyarakat) Sainstech Nusantara
Zulkarnain, Akbar
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 1 
A Comparative Study of Mobilith SHC 100 and Gulf Crown EP 2 Greases on the Train Wheel Bearings Zulkarnain, Akbar; Rianta, Wawan; Fauzi Pradana, Akbar
SAINSTECH NUSANTARA Vol. 1 No. 1 (2024): February 2024
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v1i1.41

Abstract

A bearing is a part that reduces the friction that builds up between moving parts. The proper type of grease must be considered to provide a long bearing life. This study aims to analyze the differences between Mobilith SHC 100 and Gulf Crown EP 2 greases. This study employed a laboratory test method conducted at PT Petrolab Services with the test parameters of base oil viscosity, dropping point, and worked penetration at 250C. Further, as the supporting data, a comparison of the bearing repairs was executed at Balai Yasa Manggarai using Gulf Crown EP 2 grease in 2018 and Mobilith SHC 100 in 2021. The study results suggested that Mobilith SHC 100 grease offered more advantages in maintaining its characteristic stability compared to Gulf Crown EP 2. Moreover, the bearing repairs at Balai Yasa Manggarai in 2018 and 2021 indicated that Mobilith SHC 100 had fewer bearing repairs and higher maximum mileage than Gulf Crown EP 2.
Modeling and Simulation of Static Strength Railway Bogie Bolster Using Ansys Workbench Wirawan, Willy; Zulkarnain, Akbar; Satrio Utomo, Ilham; Sabilil Rouf, Muhammad; Aizuddin Bin Azari, Muhammad; Prasetijo, Joewone
SAINSTECH NUSANTARA Vol. 1 No. 4 (2024): November 2024
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v1i4.54

Abstract

This study aimed to ensure that plastic deformation does not occur on the structure of bolster bogie 1722 when it accommodates burdens or loads based on previously determined overload limit. The simulation in this study used the finite element method with the help of Ansys Workbench 2020. The standard of testing UIC 515-4 was employed as a reference for the simulation, notably in determining the load case. The result of static simulation on the overload showed that the maximum stress on the vertical load case was 72.764 MPa, and the maximum stress on the transverse and vertical load case (combination) was 109.9 MPa. The result of maximum vertical deflection was obtained from the case of vertical load as 0.553 mm and in the case of transverse and vertical load (combination) as 1.799 mm. The structure of the bolster design is considered safe because the maximum score of stress was under the yield strength score of the used material, namely SS400 as 245 Mpa.
Effect of Groove Shape in GTAW Welding on Bending Strength of Aluminium 6061 Zulkarnain, Akbar; Tyas Damayanti, Ajeng; Yanuar Saputro, Roni
SAINSTECH NUSANTARA Vol. 1 No. 4 (2024): November 2024
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v1i4.74

Abstract

The Aluminum alloy 6061 material is used to make components for light trains such as underframes, sidewalls, roofs, and endwalls. A joining process called welding is used to make train components. In the connection process using welding, many stages must be considered, such as the design stage starting from selecting the type of welding, to choosing the seam angle used. This research aims to determine the effect of the shape of the seam on GTAW welding on bending tests on aluminum alloy 6061 material. The shape of the seam used in this research is a variation of the shape of the seam square groove, V groove, and double V groove. The research method used is research by conducting tests, based on the treatment given to the test material, namely welding using GTAW welding on aluminum alloy 6061. To determine the strength of the joint, bending tests are carried out, and calculation of the bending strength and modulus of elasticity value so that the shape of the joint can be determined. Has a high elasticity value. After welding and bending tests were carried out, the highest average bending strength result was 94.83 MPa in the double V groove seam shape variation, and for the specimen that had the lowest bending strength it was 41.299 MPa in the square groove seam shape variation. The elastic modulus calculation was carried out showing that the largest elastic modulus value in the Double V groove seam shape was 295.929 MPa.
Co-Authors Aizuddin Bin Azari, Muhammad Arif Devi Dwipayana, Arif Devi Arifin, Triana Sharly Permaisuri Budi, Hari Budiarto, Balla Wahyu Dadang Sanjaya Atmaja Damar Isti Pratiwi Ersaputra, Arya Yudha Evi Deliana HZ Fauzi Pradana, Akbar Hari Boedi Wahjono Ilham Satrio Utomo Imron, Nanda Ahda Oktaria, Dhina Setyo Perwira, Dimas Adi Pradana, Adrian Prasetijo, Joewone Prasetya, Henry Widya Priwardana, Faizal Riko Raflyliano, Reka Patria Ramadhani, Yunus Dwi Rianta, Wawan Rifa'i, Afaf Fadhil Rukai, Royyan Sabilil Rouf, Muhammad Saefullah, Dehar Bagas Satrio Utomo, Ilham Tyas Damayanti, Ajeng Wirawan, Willy Yanuar Saputro, Roni Zulwisman, Zulwisman