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All Journal Jurnal Energi Dan Manufaktur IPTEK The Journal of Engineering
Eddy Widiyono
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Analisa Gaya dan Daya Mesin Pencacah Rumput Gajah Berkapasitas 1350 kg/jam Liza Rusdiyana; Suhariyanto Suhariyanto; Eddy Widiyono; Mahirul Mursid
Jurnal Energi Dan Manufaktur Vol 7 No 2 (2014): Oktober 2014
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Di indonesia banyak penduduk yang berprofesi sebagai peternak. Jika peternak yang memilikijumlah ternak banyak (lebih dari 5) akan mencacah rumput gajah dengan cara manual, itu akanmenghabiskan waktu, jadi dengan adanya alat pencacah rumput gajah akan sangat membantumenghemat waktu. Alat pencacah rumput gajah adalah alat yang dapat membantu menghematwaktu. Jadi alat pencacah rumput gajah adalah teknologi tepat guna. Proses untuk membuatalat pencacah rumput gajah adalah dengan melakukan perhitungan poros dan pasak, dayayang dibutuhkan alat pencacah rumput gajah, kapasitas produksi pada alat pencacah rumputgajah. Dari proses perhitungan alat pencacah rumput gajah di dapatkan daya motor sebesar0,64164 Hp dengan putaran 707,5 rpm, diameter poros sebesar 2,39 cm dengan bahan S45C,dan proses produksi didapatkan 1352 kg/jam.Kata kunci : Poros, daya, rumput gajah, mesin, ternakIn Indonesia many people who work as breeder. If the breeder will cut elephant grass by hand,it will spend the time, so with the bulrush enumerator tool will greatly help save time. Bulrushenumerator tool is a tool that can help save time. So apparatus bulrush enumerator isappropriate technology. The process to make the bulrush enumerator tool is to performcalculations and peg shaft, power tools required enumerators of bulrush, the productioncapacity of the apparatus bulrush enumerator. Of the calculation tool in bulrush chopper getmotor power of 0.64164 Hp to 707.5 rpm rotation, shaft diameter of 2.39 cm with a material S45 C , and the process of production obtained in 1352 kg / hour.Keywords: Axle, power, elephant grass, machinery, livestock
Synergistic Temperature Effect on the Acid Corrosion Inhibition of API 5L Grade B Steel Using Eichhornia crassipes Leaf Extract Laksita Aji Safitri; Eddy Widiyono; Hari Subiyanto; Dimitra Meidina Kusnadi; Yusuf Tanto Kuswanto; Nur Husodo
IPTEK The Journal of Engineering Vol. 11 No. 3 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

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Abstract

Corrosion is the deterioration of material properties, particularly metals, due to chemical reactions with the surrounding environment. One of the effective methods to mitigate corrosion is the addition of inhibitors. Organic inhibitors are considered environmentally friendly, cost-effective, and renewable. In this study, an extract of water hyacinth leaves (Eichhornia crassipes) was used as an organic inhibitor. The material tested was API 5L Grade B steel in 1 M HCl solution as the corrosive medium, with testing temperatures of 30 °C, 40 °C, 50 °C, and 60 °C, and inhibitor concentrations ranging from 500 mg to 2500 mg. The corrosion behavior was evaluated using Potentiodynamic Polarization (PDP), Electrochemical Impedance Spectroscopy (EIS), and Weight Loss (WL) methods. The results showed a significant reduction in the corrosion rate of API 5L Grade B steel in 1 M HCl solution when the water hyacinth extract inhibitor was added. In the PDP test, the corrosion rate for the sample without inhibitor reached 107.4 mm/year, while the lowest inhibition efficiency was 1.25% and the highest inhibition efficiency was 97.85%, observed at 50 °C with an inhibitor concentration of 2500 mg. This represents the maximum efficiency among all tested concentrations and temperatures.
Co-Authors Dimitra Meidina Kusnadi Hari Subiyanto Laksita Aji Safitri Liza Rusdiyana Mahirul Mursid Nur Husodo Suhariyanto Suhariyanto Yusuf Tanto Kuswanto