Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Teknologi Terapan Jurnal Mekanik Terapan
Fatin, Shafa Amatullah
Unknown Affiliation
Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
OPTIMALISASI DESAIN JIG VALVE SPRING COMPRESSOR DENGAN DOUBLE FLANGE UNTUK EFISIENSI PELEPASAN DAN PEMASANGAN KATUP MESIN Dewi, Renita; Fatin, Shafa Amatullah; Wijaya, Krisna Chandra; Ramadhani, Anisa; Heryana, Ghany
Jurnal Teknologi Terapan Vol 11, No 2 (2025): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v11i2.703

Abstract

This research aims to develop a new design of Jig Valve Spring Compressor that uses double flange, replacing the previous design that only uses one flange. This new design, which is still under development, has the potential to increase the speed and efficiency of the cylinder head overhaul process which has previously shown an increase in time efficiency of up to 82%. The development of this design is based on ergonomic principles using the OWAS  method to minimize the risk of musculoskeletal injuries and improve the working comfort of technicians during the engine valve removal and installation process.
Design and Development of a Vertical-Type Hydraulic Ram Pump Simulator Widiawaty, Candra Damis; Millah, Azzam; Rasyid, Muhammad; Putri, Nuke Earlyana; Putri, Maytasha Gusti; Nurdiansyah, Muhammad; Fatin, Shafa Amatullah
Jurnal Mekanik Terapan Vol 7 No 1 (2026): April 2026
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v7i1.8238

Abstract

The hydraulic ram pump is one form of green energy used to convey water by utilizing the water hammer effect. The main parameter influencing the performance of a hydraulic ram pump is the water energy source. Most researchers modify the hydraulic ram pump design based on the installation site, which limits the variation of design or operating conditions due to the complexity and geographical constraints in the field. The main contribution of this work is the development of a vertical-type hydraulic ram pump simulator that enables controlled laboratory investigation of design modifications and operating parameter optimization, overcoming the limitations of site-specific field installations. The research applies a design and experimental method. The design process begins with defining design constraints and calculating the flow based on the Bernoulli equation, flow rate, head loss, and rule-of-thumb operational conditions for hydraulic ram pumps. The results show that the flow rate significantly affects the pump efficiency. Flow rates of 0.6 L/s, 0.8 L/s, 0.9 L/s, and 1 L/s. The range pressure of P1 are 50-60 mBar, 8-90 mBar, 80-120 mBar, and 100-140 mBar.  The range pressure of P2 are 120-125 mBar, 20-40mBar, 20-40mBar, and 85-120 mBar. Therefore, the yielded average efficiencies are 5.3%, 1.6%, 3.9%, and 3.5%, respectively. The developed hydraulic ram pump simulator achieved the highest efficiency (5.3%) at a flow rate of 0.6 L/s, P1 50-60 mBar, and P2 120-125 mBar. It can be observed that an increase in drive pipe flow rate does not always correspond to an increase in efficiency. However, the efficiency is more strongly determined by the pressure generated by the water hammer.
Co-Authors Candra Damis Widiawaty, Candra Damis Dewi, Renita Ghany Heryana Millah, Azzam Muhammad Rasyid, Muhammad Nurdiansyah, Muhammad Putri, Maytasha Gusti Putri, Nuke Earlyana Ramadhani, Anisa Wijaya, Krisna Chandra