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Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Published by Asosiasi Riset Ilmu Teknik Indonesia
ISSN : 30315018     EISSN : 30313503     DOI : 10.61132
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Industrial & Manufacturing Engineering Mechanical Engineering
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan. is a journal devoted to the publication of scientific articles published by the Indonesian Engineering Science Research Association. This journal is a peer-reviewed and open research journal of the Engineering Science Clump. The fields of study in this journal include the Civil Engineering, Earth and Shipbuilding Engineering sub-groups. The Research Journal of the Engineering Science Clump accepts articles in English and Indonesian. This journal is published 1 year 4 times (February, May, August and November)
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 174 Documents
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Pembuatan Cangkul Baja Ukuran 35×22×0,7 cm, Kapasitas 0,5 Biji/Jam Akmal Robby Syadana; Syamsul Hadi; Satrio Riesqi Saputra; Muhammad Agil Ramadhan
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i2.1456

Abstract

This study was motivated by the limited quality of locally manufactured hoes, which are considered insufficiently strong and hard for soil cultivation activities such as digging, clearing, and leveling land, making them less competitive than imported products. The study aimed to produce a steel hoe measuring 35 × 22 × 0.7 cm with adequate strength, hardness, and wear resistance for soil cultivation. The manufacturing process included designing the hoe, selecting AISI 1020 low-carbon steel as the raw material, conducting the forging process at a temperature of 1,150–1,250°C, applying a carburizing heat treatment at 900°C for one hour, testing the product's hardness and chemical composition, installing a wooden handle, and inspecting product quality and dimensions according to applicable standards. The results showed that the manufactured steel hoe met the requirements of SNI 0331:2018 and achieved a hardness value of 37.842 HRC. The production cost was Rp150,000.00 per unit, with a manufacturing time of approximately 120 minutes per unit. The resulting hoe demonstrated adequate strength, hardness, and wear resistance, making it suitable for soil cultivation activities, particularly digging, clearing, and leveling agricultural land..
Analisis Penyebab Kenaikan Temperatur Air Tawar pada Sistem Pendingin Mesin Induk di HT Kresna 3116 Syavessandro Marchio Sangkastria Diadema; Sugeng Marsudi; Maxima Ari Saktiono
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i2.1459

Abstract

This study aims to analyze the factors causing the increase in fresh water cooling temperature in the Main Engine, the impacts on engine performance, and the corrective actions taken to overcome Cooling System problems on board Harbour Tug (HT) Kresna 3116. The research was conducted during the sea practice period (PRALA) from October 5, 2024, to October 5, 2025, using a descriptive qualitative research method. Data were collected through direct observation in the engine room, interviews with the Chief Engineer and engine crew, documentation, and analysis of Cooling System operational data. The results showed that the increase in fresh water cooling temperature from the normal condition of 70°C to 85°C was caused by several factors, including blockage of the Sea Chest due to mud and marine debris, scale accumulation in the fresh water cooler, damage to the Mechanical Seal of the Fresh Water Pump, and the less-than optimal implementation of the Planned Maintenance System (PMS). These problems reduced the effectiveness of the heat transfer process, causing the exhaust gas temperature to increase up to 460°C, decreasing combustion efficiency, increasing fuel consumption, and potentially leading to Overheating of the Main Engine. To address these issues, several corrective actions were implemented, including cleaning the Sea Chest and fresh water cooler, replacing the damaged Mechanical Seal on the Fresh Water Pump, renewing the Coolant, and carrying out PMS activities regularly and continuously. After these corrective measures were taken, the fresh water cooling temperature returned to its normal range of approximately 70°C, and the system pressure returned to 2.5 bar. Based on the research findings, it can be concluded that regular maintenance and monitoring of the Cooling System are essential to maintain Main Engine performance, improve vessel operational reliability, and prevent disruptions that could hinder sailing operations.
Analisis Kegagalan Sistem Pelumasan Piston pada Diesel Generator Nomor 1 di Kapal MV. Hanglima Moh. Rifqi Bagus Wahyudi; Sugeng Marsudi; Rodlitul Awwalin
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i2.1460

Abstract

This study analyzes the causes of piston lubrication system failure and its impact on the performance of Diesel Generator No. 1 aboard MV. Hanglima. The lubrication system is essential for reducing friction, cooling engine components, and preventing wear to ensure reliable diesel engine operation. This research employed a qualitative descriptive approach using direct observation in the engine room, interviews with engine crew members, and documentation from engine logbooks and engine disassembly results. The findings show that the engine initially operated normally, but a significant increase in fresh water and lubricating oil temperatures, followed by a drop in lubricating oil pressure below the minimum operating limit of 2.5 bar, activated the Low Lubricating Oil Pressure alarm. This condition caused the engine speed to decrease from 1200 RPM to approximately 700 RPM, reducing both frequency and electrical power output. Engine disassembly revealed that the failure was primarily caused by a blocked piston cooling jet in Cylinder No. 3, contaminated oil filters, sludge accumulation in the oil sump, and wear on the piston and cylinder liner. Regular preventive maintenance is therefore essential to ensure stable and reliable diesel generator performance.
Analisis Pengaruh Penambahan Ca(Oh)₂ Terhadap Kontaminasi Ion Magnesium (Mg²⁺) Berdasarkan Nilai Rheology Lumpur Pemboran Berbasis Air Yohanes Ongky Miang; Joko Wiyono; Fatma Fatma
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 3 (2026): Agustus : Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i3.1470

Abstract

This research was conducted to evaluate the impact of magnesium ion (Mg²⁺) contamination and to assess the effectiveness of calcium hydroxide (Ca(OH)₂) as a treatment agent on the rheological behavior of water-based drilling mud. The experiment utilized 350 mL of water-based mud (WBM), which was contaminated with MgCl₂·6H₂O at concentrations of 2 g, 4 g, and 6 g. Subsequently, Ca(OH)₂ was added at dosages of 1 g, 2 g, and 3 g. The evaluated parameters included plastic viscosity (PV), yield point (YP), gel strength, filtration loss, mud weight, and pH in accordance with API standards. The findings revealed that magnesium contamination altered the rheological characteristics of the drilling mud, as indicated by a reduction in PV, increases in YP and gel strength, higher filtration loss values, and a decrease in pH. These changes suggest that the presence of Mg²⁺ negatively affects mud stability. Following the addition of Ca(OH)₂, the pH increased and returned to alkaline conditions, while the adverse effects of magnesium contamination on mud rheology were partially mitigated. Although several rheological parameters remained higher than those of the base mud, the treatment demonstrated its ability to improve mud performance by stabilizing its chemical condition and reducing the influence of magnesium ions. The results indicate that Ca(OH)₂ can be applied as a treatment material to reduce the adverse effects of magnesium ion contamination in water-based drilling mud. However, an appropriate dosage is still required to achieve optimum drilling fluid performance.

Page 18 of 18 | Total Record : 174

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