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All Journal Rotasi Rekayasa Mesin Jurnal Teknik Mesin
Kimar Turnip, Kimar
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Kristen Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Mechanical Engineering

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Analisis Pengaruh Holding Time terhadap Sifat Mekanis dan Struktur Mikro pada Proses Induction Tempering Batang Piston Baja SCM 420 H Budiarto, Budiarto; Turnip, Kimar
Rekayasa Mesin Vol 9, No 3 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (660.016 KB) | DOI: 10.21776/ub.jrm.2018.009.03.11

Abstract

Selection of materials connecting rod for a component or structure usually involves several aspects, there are aspects of specific strength, stiffness, lightweight, noncorrosive materials and resistance or age. In the manufacturing process connecting rod always give heat treatment such as Normalizing, Carburizing, and Induction Tempering. In the process, Induction Tempering has a big problem in hardness after the process, not stable and liable to over from standard. Process condition of tempering induction temperature in 650~700 C at 1 atm pressure, & holding time variation at 5, 10, 15, and 20 seconds. Kind of tests such as bending test, magna-flux, hardness, and structure micro. Bending test report fiber flow is straight, not broke because not found micro crack portension at body connecting rod. Hardness test result min point 23 HRC and max point 39,2 HRC base on standard range 25~44 HRC. The results of surface morphological observation show that the martensite phase causes hardness value to increase.
Desain Mekanisme Ballscrew untuk Retrofit Drilling axis Mesin Ficep H-Beam Drilling LFB-200-49 Turnip, Kimar; Atmadi, Priyono; Novianto, Andreas Agung
ROTASI Vol 23, No 2 (2021): VOLUME 23, NOMOR 2, APRIL 2021
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.23.2.22-28

Abstract

The retrofit process is the process of replacing or adding a component to a machine with the aim of adding value to the machine's performance. In this study, the retrofit process was applied to the replacement of the Ficep H-beam Drilling LFB-200-49 drilling machine axis. This retrofitting process requires a servo motor component as driving energy and a ballscrew to convert the motor rotation into a linear twist drill motion during the drilling process to replace the hydraulic system used previously. In the retrofit design carried out on the Ficep H-beam Drilling machine, the thrust generated by the hydraulic system is used as a reference to determine the dynamic load requirements that must be transmitted by the ballscrew while the thrust axial force from the drill bit is used as a reference in determining the power of the servo motor. In designing the replacement of the hydraulic system to this servo motor system, the recommended components are a ballscrew with a pitch of 10 mm and a ballscrew shaft diameter of 38 mm which meets the requirements for dynamic load transmission of 50,210.56 N and a servo motor with a power of 8.12 kW with the addition of a gear ratio of 3. : 1.
SIMULASI TURBIN ANGIN DENGAN BEBERAPA TIPE AIRFOIL MENGGUNAKAN SOFTWARE QBLADE Sebo, Bimo Putra; Turnip, Kimar; Samosir, Rahmad
Jurnal Teknik Mesin ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ(Journal Of Mechanical Engineering) Vol 11, No 2 (2022)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v11i2.10801

Abstract

Indonesia adalah negara yang memiliki potensi sumber energi terbarukan yang cukup besar, salah satunya adalah sumber energi angin yang potensinya mencapai 100 MW. Namun, pemanfaatan sumber energi angin di Indonesia masih belum maksimal, yakni baru sekitar 1.6% atau sekitar 1.6 MW. Desain turbin angin dan pengukuran kecepatan angin rata-rata merupakan hal yang penting dalam pemanfaatan potensi energi angin. Oleh sebab itu, dibutuhkan pengetahuan perihal desain dan simulai dari beberapa parameter yang mempengaruhi pemanfaatan energi angin, seperti jenis airfoil , kecepatan angin, pitch angle turbin angin, dan parameter desain turbin angin. Dalam penelitian ini, akan dilakukan desain sekaligus simulasi turbin angin menggunakan software Qblade dengan beberapa tipe airfoil yang berbeda, untuk mengetahui tipe airfoil  dengan bentuk geometrinya yang paling efisien dalam membangkitkan daya pada turbin angin.
Co-Authors Atmadi, Priyono Budiarto Budiarto Novianto, Andreas Agung Samosir, Rahmad Sebo, Bimo Putra