Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Journal Dynamic SainT Quantum Teknika
Chendri Johan
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Optimasi Umur Pahat Pada Proses Pembubutan Baja ST 42 Chendri Johan
Journal Dynamic Saint Vol. 5 No. 2 (2020): Jilid 5 Volume 2
Publisher : Publikasi dan UKI Press UKI Toraja.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47178/dynamicsaint.v5i2.1099

Abstract

The high cutting speed (Vc) and the varying depth of cut (a) made the tool life decrease. Machining variables are very influential on the tool life, namely cutting speed (Vc) which has a contribution of 13.36%, and depth of cut (a) which has a contribution of 68.56% to the tool life. The correlation value between tool life and the machining process variable is very significant, with the correlation value between the predictors obtained by R = 0.999.
Analisis Permukaan Baja ST 42 dalam Pengaruh Variasi Kecepatan Spindel dan Kedalaman Pemotongan pada Kekasaran Hasil Teknologi Pemesinan Chendri Johan; Alfendi Ranteallo; Yafet Bontong; Sallolo Suluh; Pineng, Martina
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol. 8 No. 2 (2025): Journal of Electrical and System Control Engineering
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v8i2.13159

Abstract

Surface roughness is an important aspect in machining that affects the appearance and function of the product. This study examines the effect of spindle speed and depth of cut on the surface roughness of ST 42 steel using HSS tools. Workpieces with a length of 300 mm and a diameter of 25 mm were processed with variations in spindle speed of 250, 350, and 450 rpm and depths of cut of 0.6, 0.7, and 0.8 mm. Roughness measurements were carried out using a surface tester. The results showed that at 250 rpm, the surface roughness was 0.0554 μm, at 350 rpm, 0.0517 μm, and at 450 rpm, 0.0416 μm. For the depth of cut, the roughness values were 0.0509 μm (0.6 mm), 0.0523 μm (0.7 mm), and 0.0542 μm (0.8 mm), respectively. The conclusion shows that increasing spindle speed reduces surface roughness, while depth of cut has a less significant effect.
Pengaruh Kecepatan Putaran Menggunakan Pahat Karbida Tungsten Kobalt 6% terhadap Frekuensi Getaran dan Kekasaran Permukaan Baja ST 37 Chendri Johan; Paulus Aket; Rony Rukka; Lery Alfriany Salo
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol. 7 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v7i2.30666

Abstract

This study aims to analyze the effect of rotational speed variations in the turning process using 6% cobalt tungsten carbide chisels on the vibration frequency and surface roughness of ST 37 steel. Tests were conducted using a conventional lathe with five rotational speed variations: 350 rpm, 400 rpm, 450 rpm, 500 rpm, and 550 rpm. Other cutting parameters were kept constant, namely feed rate of 0.7 mm/rev, depth of cut of 0.7 mm, and the use of SAE 10 oil cooling media. The results showed that the higher the rotational speed, the lower the surface roughness value. The highest roughness value was obtained at a speed of 350 rpm of 7.420 μm, while the lowest value was at 550 rpm of 4.66 μm. Conversely, the vibration frequency increased with increasing rotational speed. The lowest vibration frequency of 1.53 mm/s occurred at 350 rpm, while the highest value was 3.53 mm/s at 550 rpm. These results show that increasing the rotational speed produces a smoother surface, but increases tool vibration.
Co-Authors Alfendi Ranteallo Lery Alfriany Salo Martina Pineng Paulus Aket Rony Rukka Sallolo Suluh Yafet Bontong