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Nasrul Ilminnafik
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ROTOR: JURNAL ILMIAH TEKNIK MESIN
Published by Universitas Jember
ISSN : 1979018x     EISSN : 24600385     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 2 Documents
 1 
Search results for , issue "Vol. 17 No. 1 (2024)" : 2 Documents clear
ANALYSIS OF NON-DESTRUCTIVE TESTING IN THE METAL STITCHING PROCESS Saputra, Ryandi Daffa; Zariatin, Dede Lia
ROTOR Vol. 17 No. 1 (2024)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v17i1.43300

Abstract

This research addresses damage and cracks in the Yanmar 6N18L – EV engine block through metal stitching, a coldwelding method using pins and locks to prevent thermal and mechanical cracks. The study aims to assess crack quality post metal stitching via NDT Liquid Penetrant and hardness through NDT Hardness Testing. Economic value is also evaluated. Data is collected through field observation and experimentation, meeting ASTM 159 G3500 standards. Results indicate successful crack repair, meeting NDT Liquid Penetrant standards, and achieving a 230.6 HB average hardness with a 4.82% variance, aligning with ASTM 159 G3500's 207-255 HB range. Economically, metal stitching proves beneficial with an NPW of Rp 412,353,912, making it a preferred solution for engine block crack issues.
EFFECT OF WELDING SEQUENCE ON DISTORTION RESULTS IN BRACKET CONNECTIONS Suheri, Suheri; Widodo, Syamsul Bahri; Arif, Zainal; Surawan, Surawan; Ali, Sulaiman; Pamungkas, Nurman; Syafii, Muhamad
ROTOR Vol. 17 No. 1 (2024)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v17i1.49037

Abstract

The distortion in the shape of the weld specimen is influenced by the uneven heat distribution during the welding process. There is also distortion in the welding modeling performed on the bracket joint. The modeling scenario of the bracket joint forms the basis for measuring the distortion results. Therefore, when we model the bracket joint, we obtain varying distortion results. There are three lines to observe the distortion effects. Lines a, b, and c are located on the X and Y axes (center), while line c is on the X and Y axes (+). Line a is on the X and Y axes (-). The test specimen that has been modeled is the result of numerical modeling, which is then used to calculate the magnitude of the distortion on the longitudinally stiffened plate test specimen. For the numerical modeling of the bracket joint, the result of scenario 1 is distortion. Meanwhile, the distortion results of the bracket joint modeling in scenarios 1 and 2 show that the distortion value obtained in scenario 2 is higher than that obtained in scenario 1. This is influenced by the order of welding lines used in the bracket joint modeling.

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