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International Journal of Science and Environment
Published by CV. Inara
ISSN : -     EISSN : 28090551     DOI : https://doi.org/10.51601/ijse.v2i4
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics
International Journal of Science and Environment (IJSE) is to provide a research medium and an important reference for the advancement and dissemination of research results that support high-level research in the fields of Science and Environment . Original theoretical work and application-based studies, which contributes to a better understanding all fields of Science and Environment. The aim and scope of the journal Chemistry, Chemical Analysis, Physical Chemistry, Physics, Biology, Ecology, Biodiversity, Zoology, Biochemistry, Mathematics, Environmental Science, Agriculture, Environment, Forestry.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 622 Documents
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Effect of Principal Cutting Edge Angle of High-Speed Steel Tools On The Machining Stability of Aluminium 6061 During Turning Nanang Kosim; Imran; Burhan Hafid
International Journal of Science and Environment (IJSE) Vol. 6 No. 2 (2026): May 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i2.769

Abstract

The turning process is one of the most widely used machining operations to produce workpieces with the required dimensions and surface quality. The stability of the turning process is influenced by several machining parameters, one of which is the principal cutting edge angle (κr) of the cutting tool. Variations in the principal cutting edge angle affect the distribution of cutting forces, vibration characteristics, and machining stability. This study aims to analyze the effect of principal cutting edge angle variations of High-Speed Steel (HSS) cutting tools on the stability of the turning process of Aluminium 6061. The experiment was conducted using a conventional lathe with three principal cutting edge angle variations, namely 45°, 60°, and 90°. Other machining parameters, including spindle speed, feed rate, depth of cut, workpiece material, and cutting tool material, were maintained constant throughout the experiment. Machining stability was evaluated based on vibration measurements using a vibration meter, and each experimental condition was repeated three times. The experimental data were analyzed using One-Way Analysis of Variance (ANOVA). The results indicated that the average vibration values for κr angles of 45°, 60°, and 90° were 0.933 mm/s, 0.740 mm/s, and 0.743 mm/s, respectively. Statistical analysis showed a significant effect of principal cutting edge angle variation on vibration level (F = 50.82, p < 0.05). Among the tested angles, the 60° principal cutting edge angle produced the lowest vibration level, indicating the highest turning process stability. These findings demonstrate that selecting an appropriate principal cutting edge angle can improve machining stability and optimize turning performance for Aluminium 6061.
Preventive Analysis of Maintenance On Centrifugal Pumps Using The Mean Method Time Between Failure (MTBF) and Mean Time To Repair (MTTR) Ardian Saputra; Erwen Martianis
International Journal of Science and Environment (IJSE) Vol. 6 No. 2 (2026): May 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i2.770

Abstract

Centrifugal pumps are essential equipment in fluid distribution systems that operate continuously, so they have the potential to suffer damage that can reduce the reliability of the system. This study aims to analyze the damage and effectiveness of centrifugal pump maintenance using the Preventive Maintenance Analysis method on centrifugal pumps using the Mean Time Betwwn Failure (MTBF) and Mean Time To Repair (MTTR) methods. The MTBF value is used to determine the reliability level of the pump, while the MTTR is used to evaluate the efficiency of the repair time. The results of the analysis show that a high MTBF value indicates good pump reliability, while a low MTTR value indicates an efficient repair process. Based on the results of the study, it can be concluded that the implementation of planned and reliability-based maintenance is able to reduce downtime and improve the performance and service life of centrifugal pumps. This research is expected to be a reference in the preparation of a more effective and optimal pump maintenance strategy.

Page 63 of 63 | Total Record : 622

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