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All Journal LONTAR Jurnal Teknik Mesin Undana (LJTMU )
Yeremias M Pell
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Mechanical Engineering

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Pengaruh Perlakuan Karburising Menggunakan Arang Kayu Kusambi Terhadap Kekerasan Material Pada Spesimen Tooth Bucket Excavator Mohammad Fadel; Erich U. K. Maliwemu; Yeremias M Pell
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 13 No 01 (2026): April 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v13i01.19244

Abstract

The aim of this research is to determine the effect of carburizing using kusambi charcoal on the hardness of Excavator Bucket Tooth. An excavator is a piece of heavy equipment that is often used in various types of projects to carry out various projects such as loading and unloading asphalt, digging soil and is also used in the mining world for digging. This research was conducted at the Kupang State Polytechnic campus from May to June 2024, using tools such as a furnace, electric grinder, microscope, hardness testing equipment, 60 mesh sieve, carburizing box and the materials used were an excavator tooth bucket and kusambi charcoal powder. . This research uses 2 tests, namely Vickers hardness testing and microstructure testing. In the Vickers hardness test, the average hardness value for each media variation was the best with a hardness treatment of 130 grams with an average hardness value of 36 VHN. Meanwhile, in the microstructure test with 130 grams of pearlite treatment, the pearlite structure increased and the grain size began to even out along the penetration, although there was still a lot of ferrite on the pearlite side.
Analisis Pengaruh Endplate Terhadap Kinerja Turbin Angin Savonius Sebagai Pembangkit Energi Listrik Moh Yusril Nurtaufiq; Arifin Sanusi; Yeremias M Pell
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 13 No 01 (2026): April 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v13i01.22084

Abstract

If without using an end plate, the wind direction is more spread out. From the main background of end plate testing, a study was conducted entitled "The Effect of End Plates on the Performance of Savonius Wind Turbines as Electric Power Generators". The test results show that with the same wind speed, it can produce greater turbine rotation if using an endplate compared to without using an endplate, from the results of the study at the same wind speed of 6.1 m / s it produces a rotor rotation of 652.5 rpm, Tip Speed ​​Ratio 0.8, power coefficient 0.5. In the turbine using endplate, this result is greater than the turbine without endplate by 488.9 rpm, Tip Speed ​​Ratio 0.4, power coefficient 0.2. The efficiency of the generator using endplate is better than without using endplate. Namely the maximum efficiency produced is 13.76% at a wind speed of 3.8 m/s. While without using endplate the maximum efficiency produced is 7.06% at a wind speed of 3.5 m/s.
Co-Authors Arifin Sanusi Erich U. K. Maliwemu Moh Yusril Nurtaufiq Mohammad Fadel