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All Journal Rotasi Reaktom : Rekayasa Keteknikan dan Optimasi Jurnal Polimesin
Suryapradana, Ilmawan
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Sensor Monitoring Suhu Komputer Berbasis Port Paralel Dengan Menggunakan Rangkaian IC LM35 dan ADC 0804 Santoso, Hadi; Suryapradana, Ilmawan
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 2 (2018)
Publisher : Universitas Hasyim Asy'ari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33752/reaktom.v3i2.337

Abstract

Optimasi Umur Pahat Karbida TiN: Studi Eksperimental dengan Variasi Kecepatan Potong dan Metode Taylor Halim, Arfan; Suryapradana, Ilmawan; Sufriansyah, Dedy; Masnur, Masnur
ROTASI Vol 27, No 1 (2025): VOLUME 27, NOMOR 1, JANUARI 2025
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.27.1.%p

Abstract

Penggunaan alat potong karbida banyak digunakan oleh industri pemotongan logam, dengan penelitian sebelumnya menunjukkan bahwa alat potong karbida memiliki daya tahan lebih tinggi dibandingkan alat potong biasa. Penelitian ini menjelaskan pengujian untuk menentukan umur dan keausan pahat karbida TiN, yang dapat melengkapi data variabel permesinan terkait masa pakai pahat. Penelitian ini dilakukan dengan memperhatikan pengaruh kondisi pemotongan, di mana kecepatan potong divariasikan sementara parameter lainnya (gerak makan dan kedalaman potong) tetap. Tujuan penelitian ini adalah menentukan umur pahat karbida yang digunakan dalam proses pembubutan poros. Hasil penelitian menunjukkan bahwa pada pahat karbida TiN dengan kecepatan potong 92,45 m/menit, keausan terjadi pada menit ke 220 dengan nilai VB 0,92 mm, sedangkan pada kecepatan potong 56,33 m/menit, keausan terjadi pada menit ke 420 dengan nilai VB 0,53 mm. Secara empiris, umur pahat untuk kondisi proses pembubutan dianalisis menggunakan pendekatan metode umur pahat Taylor. Dari hasil pengujian umur pahat karbida TiN pada kombinasi kecepatan potong (VC) 56,33 m/menit dan 92,45 m/menit, diperoleh nilai eksponen n = 0,7857 dan konstanta CT = 3,8086 sehingga persamaan umur pahat adalah V.T0,7857 = 3,8086.
Experimental investigation of seawater volume effect on the performance of a corrugated-V absorber solar still Halim, Arfan; Suryapradana, Ilmawan; S, Adit; P, Abraham
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8485

Abstract

Limited access to clean water in coastal and remote areas has spurred the development of simple desalination technologies powered by renewable energy. This study analyzes the effect of seawater volume variation on the performance of a solar distillation system employing a corrugated-V absorber plate at a 40° tilt angle. The absorber plate was fabricated from aluminum and coated with matte black paint to enhance solar radiation absorption. Experimental tests were conducted under natural solar radiation conditions with seawater volumes of 5L, 6L, and 7L from 09:00 to 16:00 local time. The observed parameters included estimated solar radiation intensity, absorber plate temperature, basin water temperature, system efficiency, and condensate production. The results indicate that seawater volume significantly influences the thermal characteristics and productivity of the solar still. Among the tested variations, the 6L volume showed the best performance, achieving an average efficiency of 40.54% and a maximum condensate yield of 0.36L. At 5L, the available thermal energy was not effectively utilized, whereas at 7L, the increased water mass resulted in slower heating and evaporation rates. These findings demonstrate that appropriate selection of seawater volume plays an important role in enhancing the performance of solar distillation systems equipped with corrugated-V absorber plates under real outdoor operating conditions.
Co-Authors Arfan Halim Hadi Santoso Masnur Masnur P, Abraham S, Adit Sufriansyah, Dedy