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All Journal Bulletin of Community Engagement Serambi Engineering
DWI ARNOLDI
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Efisiensi Waktu Pengemasan Keripik Menggunakan Alat Pengemas Semi Otomatis Berbasis Internet of Things Arif Suersa; Muhammad Rasid; Dwi Arnoldi
Bulletin of Community Engagement Vol. 4 No. 3 (2024): Bulletin of Community Engagement
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/bce.v4i3.1565

Abstract

This research aims to improve the efficiency and quality of chip packaging by testing four main aspects: stepper motor speed, sensor errors, the effect of sealer temperature on packaging quality, and a comparison of semi-automatic and manual packaging times.  Stepper motor speed testing was conducted to find the optimal speed, which was found to be 300 RPM. At this speed, the average packaging time per product is 7.84 seconds with a total of 36 products packed in 5 minutes. Error testing on the sensors showed that the Ir Proximity and Ultrasonic (Plastic) sensors had a high accuracy of 86.7%, while the Ultrasonic (Chips) sensor had an accuracy of 80%. Sealer temperature testing showed an optimal temperature of 57.9°C to achieve the best packaging quality. High temperatures such as 112.1°C result in poor packaging quality. Comparison of packaging times showed that the semi-automated method with a 300 RPM motor was more efficient, producing an average of 36 products in 5 minutes compared to 16 products using the manual method. The results of this study show that the use of stepper motors at 300 RPM, high-accuracy sensors, proper sealer temperature settings, and semi-automated technology in the packaging process can improve the efficiency, quality, and consistency of chip packaging production.    
Pengaruh Variasi Pukulan terhadap Kekerasan Baja menggunakan Mesin Hammer Otomatis Kiki Qauri Valentino; M. Rasid; Dwi Arnoldi
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study evaluates the effect of varying hammer strokes during the forging process using an automatic hammer machine on the hardness of ST 37 steel, ST 60 steel and automotive leaf springs. The experiments were carried out at a temperature of 600°C to analyse dimensional changes and material hardness resulting from plastic deformation. Data was obtained from thickness and hardness tests using the Vickers method. Variations in hammer strokes (0, 32 and 49 strokes) resulted in a significant increase in material hardness. For ST 37 steel the hardness increased from 137,964 kgf/mm² to 170,088 kgf/mm², for ST 60 steel from 158,781 kgf/mm² to 172,56 kgf/mm² and for automotive leaf springs from 198,442 kgf/mm² to 241,756 kgf/mm². This improvement is attributed to the strain hardening mechanism, which induces the accumulation of dislocations in the microstructure of the material, thereby increasing its resistance to further deformation. The variation in hammer strokes also influenced the changes in material thickness, with different levels of deformation depending on the mechanical properties of each material. ST 60 steel showed a more controlled deformation response compared to ST 37 steel, while automotive leaf springs showed greater deformation due to their more ductile nature. These results emphasise that forging process parameters, such as the number of hammer strokes, play a crucial role in enhancing the mechanical properties of materials to meet specific engineering application requirements.
Co-Authors Arif Suersa Kiki Qauri Valentino M. Rasid Muhammad Rasid