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All Journal Jurnal Rekayasa Mesin Jurnal Tecnoscienza Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Sains dan Teknologi Journal of Mechanical Engineering and Applied Technology
Atikah Ayu Janitra
Politeknik Negeri Semarang
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Public Health Other

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Journal : Journal of Mechanical Engineering and Applied Technology

 1 
Analisis Alat Bantu Pemutar Es Puter Dengan Penggerak Motor Listrik 1 HP Atikah Ayu Janitra; Ahmad Abdul Na’im
Journal of Mechanical Engineering and Applied Technology Vol 1, No 1 (2023): Volume 1 Issue 1 Year 2023 (March 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i1.4721

Abstract

Snow ice is a type of ice that is liked by the public, especially teenagers, so it requires more production, while the manufacturing process in UKM is still manual by rotating the dough tube between buckets filled with ice cubes by using the hand as a spinner, so it is considered inefficient because it requires a relatively long time and causes fatigue from the workers, a tool or snow ice machine is made so that it can speed up and facilitate and improve efficiency in the production or processing process. Referring from various sources, namely observation, field studies, literature studies, machine design, and machine testing. So that it can be implemented and produces a tool that can be produced to facilitate the process of making snow ice and has dimensions of length = 560 [mm], width = 680 [mm] and height 1400 [mm]. With a dough capacity of 12.85 [kg], it requires 1 [HP] of power and takes 70-90 minutes to make snow ice freeze.
Mass Ratio Influence on Vortex-Induced Vibration of a Flexible Cylinder using Large Eddy Simulation at Re=1000 Avicenna An-Nizhami; Nanang Apriandi; Trio Setiawan; Timotius Anggit Kristiawan; Elfrida Rizky Riadini; Atikah Ayu Janitra; Padang Yanuar
Journal of Mechanical Engineering and Applied Technology Vol 2, No 1 (2024): VOLUME 2 ISSUE 1 YEAR 2024 (MARCH 2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v2i1.5498

Abstract

The study investigates the phenomenon of vortex-induced vibration (VIV) using Large Eddy Simulation (LES) at a Reynolds number of 1000, focusing on transitional flow conditions. LES has proven effective in understanding VIV across Reynolds number regimes, aiding in comprehending flow physics and mechanisms behind VIV. The research aims to contribute data for validating numerical models and informing engineering practices. The study employs the Navier-Stokes equation and the continuity equation to analyze fluid flow, treating it as incompressible due to negligible density changes. The three-dimensional incompressible momentum equation is discretized using the finite volume method within the spatial domain. Resolution of the pressure Poisson equation ensures compliance with free divergence conditions, enhancing computational fluid dynamics simulations' reliability. Validation of the fluid flow solver involves comparing computed drag force coefficients with established benchmarks, showing agreement within small discrepancies. The study delves into vibration behavior induced by cross flow at various reduced velocities (), noting distinct patterns ranging from irregularities at low  to quasi-periodic behavior at higher values. Analysis of maximum cylinder displacement () across different reduced velocities and mass ratios underscores the complex relationship between system parameters and displacement dynamics. A consistent occurrence of y_max at a specific reduced velocity highlights its significance, while varying mass ratios affect displacement patterns, indicating the importance of understanding these dynamics for optimizing fluid-structure interaction systems.
Rancang Bangun dan Analisis Mesin Perajang Tembakau Menggunakan Mekanisme Poros Engkol Abdul Syukur Alfauzi; Atikah Ayu Janitra; Aan Setyo
Journal of Mechanical Engineering and Applied Technology Vol 1, No 2 (2023): Volume 1 Issue 2 Year 2023 (July 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i2.4874

Abstract

Tobacco is the main raw material that is utilized to make smoke. In the process the tobacco must experiences about carve, so that the process is then required carve engine existing chopper machine that uses the engine chopper blades involute results obtained in the chopped tobacco patches that appear black spots when dried so that we modify cutting mechanism carve crankshaft engine driving source motors 5.5 ( PK ) , and has been using the automated system on the conveyor secure in its use . In the selection of assessors and alternative design considerations needed to get the best design that later developed in the direction of making tools. This machine uses the calculation of motor power , the power distribution calculation , calculation , calculation of belt pulley diameter , shaft calculations . This machine has a design dimensions 1200 x 450 x 1050 ( mm ) with the results of chopped tobacco have uniformity chopped 2 , 4 and 6 ( mm )
Co-Authors Aan Setyo Abdul Syukur Alfauzi Ahmad Abdul Na’im Ana Putri Nastiti Avicenna An-Nizhami Destine Fajar Wiedayanti Elfrida Rizky Riadini Friska Ayu Fitrianti Sugiono Hartono Hartono Irin Mirrah Luthfia Mona Inayah Pratiwi Muhamad Cahyo Ardi Prabowo Muhamad Cahyo Ardi Prbowo Nanang Apriandi Nisrina Mayla Wibowo Padang Yanuar Roni Apriantoro Septiantar Tebe Nursaputro Slamet Priyoatmojo Timotius Anggit Kristiawan Trio Setiawan Trio Setiyawan Wahyu Isti Nugroho