Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Prosiding Seminar Nasional Teknoka Metalik: Jurnal Manufaktur, Energi, Material Teknik
Pancatatva Hesti Gunawan
Universitas Muhammadiyah Prof. Dr. Hamka
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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

Found 3 Documents
Search

 1 
Sistem Pendingin Bertenaga Surya pada Model Ruang Pendingin Rifky; Mohammad Yusuf Djeli; Delvis Agusman; Pancatatva Hesti Gunawan
Prosiding Seminar Nasional Teknoka Vol 7 (2022): Proceeding of TEKNOKA National Seminar - 7
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Energi surya masih menjadi harapan besar dalam menggantikan energi fosil, karena potensinya, kemudahan dalam memperolehnya serta ramah terhadap lingkungan. Konversi energi surya menjadi energi termal atau energi listrik bukan akhir dari pemanfaatan energi surya dalam kehidupan. Dengan media dua konverter energi yakni sel surya dan termoelektrik energi surya dapat dimanfaatkan untuk membuat sistem pendingin ruang. Model ruang pendingin dapat dibuat dari kotak sederhana sampai ruangan dalam bangunan. Adapun yang ingin dicapai penelitian ini untuk mendapatkan sebanyak mungkin penyerapan kalor dari ruang di bawahnya dan mendapatkan temperatur terendah. Metode yang digunakan dalam penelitian ini adalah eksperimental. Pada model ruang pendingin bagian atasnya ditempatkan sel surya dan termoelektrik yang diberi ruang pembuangan panas dari termoelektrik. Susunan sistem pendingin terdiri dari pendingin termoelektrik dan heatsink sebagai penyerap kalor. Penelitian ini menghasilkan capaian kinerja model ruang pendingin dengan nilai CoP sebesar 0,989. Sementara temperatur terendah yang dicapai oleh model ruang pendingin sebesar 25,60 oC.
Pengaruh Variasi Tekanan Oksigen pada Torch terhadap Sifat Mekanik Sambungan Las Oxy-Acetylene pada Plat Aluminium 5052 Rayhan Ihsan Nugraha; Riyan Ariyansah; Pancatatva Hesti Gunawan
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 5 No. 1 (2026): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v5i1.24535

Abstract

This research aims to analyze the effect of oxygen pressure on the oxy-acetylene welding process concerning the mechanical properties of weld joints on 5052 aluminum plates. The variations of oxygen pressure used were 30 kg/cm², 40 kg/cm², and 50 kg/cm², with the acetylene pressure kept constant for each sample. Hardness testing was conducted to evaluate the hardness distribution in the base metal, Heat Affected Zone (HAZ), fusion line, and weld metal. The results indicate that oxygen pressure significantly affects the hardness values in the weld area. At an oxygen pressure of 30 kg/cm², the hardness reached 65.7 HV. Increasing the oxygen pressure to 40 kg/cm² resulted in the highest hardness value of 98.9 HV, indicating optimal conditions for forming a denser microstructure. However, at an oxygen pressure of 50 kg/cm², the hardness decreased back to 65.7 HV, suggesting that excessively high oxygen pressure can negatively impact the solidification process. From this study, it can be concluded that an oxygen pressure of 40 kg/cm² is the optimal parameter for achieving the highest hardness in the weld area. This research emphasizes the importance of controlling welding parameters to attain the desired mechanical properties in aluminum 5052 weld joints.
Perancangan Rangka Sepeda Motor Listrik dengan Simulasi Pembebanan Statik Menggunakan CFD Farid Nurfianto; Pancatatva Hesti Gunawan; Yos Nofendri
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 5 No. 1 (2026): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v5i1.24537

Abstract

The simulation results indicate that all three frame designs meet structural safety standards with a minimum safety factor above 2.5, as established in previous studies. In the first design (V1), the safety factor ranges from 3.484 to 2.809. The second design (V2) shows an improvement in safety factor, ranging from 4.714 to 3.328. Meanwhile, the third design (V3) demonstrates the best performance with the highest safety factor, ranging from 4.785 to 3.379. The analysis also reveals that the V3 design has a more uniform stress distribution and displacement that remains within a safe limit, not exceeding 3.4311 mm. Validation was conducted by comparing the simulation results with manual calculations, showing minimal differences, confirming the validity of the simulation results. Based on the analysis, the V3 design is recommended as the optimal configuration due to its higher safety margin and better stress distribution compared to the other designs
Co-Authors Delvis Agusman Farid Nurfianto Mohammad Yusuf Djeli Nofendri, Yos Rayhan Ihsan Nugraha Rifky, Rifky Riyan Ariyansah