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Hamdan Akbar Notonegoro
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Department of Mechanical Engineering, Faculty of Engineering, Universitas Sultan Ageng Tirtayasa Jl. Jend. Sudirman Km. 3 Cilegon,
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FLYWHEEL : Jurnal Teknik Mesin Untirta
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 24077852     EISSN : 25977083     DOI : https://doi.org/10.36055/fwl.v0i0.
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 235 Documents
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Prediction of The Surface roughening in Austenitic Stainless Steel Thin Foil With Various Grain Based on Heat Treatment Process for 5.0 Technology Application Rafi Nurdwi Raharjo; Abdul Aziz; Agus Pramono; Suryana Suryana; Indah Uswatun Hasanah; Muhammad Fitrullah
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 12, No 1 (2026): April
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v12i1.39901

Abstract

Prediction of The Surface roughening in Austenitic Stainless Steel Thin Foil With Various Grain Based on Heat Treatment Process for 5.0 Technology Application
Simulation Analysis of an Ankle Prosthesis Design Using Shock Absorbers to Support Prayer Movements Winarno, Agil; Suyitno, Suyitno; Mahendra, Raka
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 12, No 1 (2026): April
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v12i1.36328

Abstract

Amputation of the lower limb causes limitations in performing daily activities, including praying (salat), which requires dynamic movements such as standing, bowing, prostrating, and sitting. This study aims to design and manufacture an ankle-foot prosthesis prototype that allows users to perform salat movements normally without removing the prosthesis. The design process was carried out using Computer-Aided Design (CAD) software to create a 3D model and analyze structural strength through Finite Element Analysis (FEA). The prosthesis was made from aluminum A356 material and fabricated using metal casting and machining methods. The simulation results showed that the maximum stress occurred at the upper front part of the ankle, with a value of 15.14 MPa, which is still below the material’s strength limit, indicating that the design is safe. The prototype produced was consistent with the design and capable of supporting dorsiflexion up to 20° and plantarflexion up to 50°, with a shock absorber mechanism that operates smoothly without jerks. Therefore, the designed ankle-foot prosthesis can provide comfort and flexibility for people with disabilities when performing salat.
Supply Chain Management for Pressure Vessel Fabrication Based on Design Pressure and Capacity Specifications Darmawan, Didit; Suharyono, Dedik
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 12, No 1 (2026): April
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v12i1.39756

Abstract

Pressure vessel fabrication requires precise material specifications derived from design pressure and capacity. These specifications guide procurement planning, supplier selection, and inventory management. Material quantity calculation must consider yield factors and nesting efficiency. Supplier selection employs multi criteria weighting with quality as primary requirement due to safety risks. Inventory management faces challenges from large material dimensions, corrosion risks, and high holding costs. Just in time or consignment strategies may suit reliable suppliers. Material traceability systems and complete documentation are mandatory for regulatory certification. Collaboration with suppliers during design phase reduces custom dimension orders. Technology adoption including ERP and blockchain improves supply chain visibility. Performance metrics such as perfect order fulfillment enable continuous improvement.
EFFECT OF ASYMMETRIC CARBON FIBER SKIN LAYER DISTRIBUTION ON THE FLEXURAL STRENGTH OF POLYPROPYLENE HONEYCOMB SANDWICH COMPOSITES Muhammad Nauval Althaaf Lovrien; Muhammad Alfatih Hendrawan
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 12, No 2 (2026)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v12i2.41706

Abstract

Advances in energy-efficient vehicle technology require lightweight materials that maintain high structural strength. One developed alternative is a polypropylene honeycomb-based sandwich composite structure reinforced with carbon fiber for monocoque chassis applications. This study aims to analyze the effect of varying the number of carbon fiber layers in the top and bottom skins on bending strength and post-test damage characteristics. Specimens were fabricated using the vacuum infusion method at a pressure of -0.8 bar, employing a polypropylene honeycomb core, 3K twill carbon fiber, and an epoxy matrix. Bending tests were conducted using the three-point bending method in accordance with ASTM D790 on three configuration variations: 5-3, 4-4, and 3-5 (top skin–bottom skin). The results showed that the configuration with 5 layers on the top skin and 3 layers on the bottom skin yielded the highest flexural strength of 15.456 MPa, followed by the 4-4 configuration at 12.469 MPa and the 3-5 configuration at 11.654 MPa. Macroscopic analysis revealed failure mechanisms including bending deformation, delamination, core crushing, matrix cracking, lower skin cracking, and fiber pull-out. It is concluded that increasing carbon fiber layers in the top skin significantly enhances flexural strength and reduces damage to the sandwich composite structure.
DESIGN AND CONSTRUCTION OF ANIMAL FEED PACKAGING MACHINE USING A MANUAL MEASURING AND PRESS SYSTEM WITH VARIABLE SPEED Rizki Ardika Akbar; Bobby Alvian Juliansah; Elisa Sulistyorini
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 12, No 2 (2026)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v12i2.41419

Abstract

A packaging machine is a tool that functions to carry out the work of packaging production products in an industrial process. The main purpose of designing this packaging machine is to make the animal feed packaging process faster, more accurate, and more efficient in terms of energy use. The working principle of this packaging machine uses a measuring system that moves back and forth continuously, where the measuring adjusts the volume of the type of animal feed that is packaged, so that the packaging process becomes shorter and more accurate. Therefore, the concept of speed control of an induction motor using Variable Frequency Drive (VFD) can be applied as a control system to adjust the speed of the electric motor according to the needs of the workload. The research method used is experimental research, which is to make a tool and conduct a direct function test to determine the level of measurement accuracy. The test results show that the machine is able to carry out the process of measuring and packaging animal feed more effectively and efficiently. In addition, the use of VFD allows the adjustment of working speed according to production needs, while the press system uses a hand impulse sealer to produce neater packaging and has a better selling value. The machine designed is expected to be a solution for livestock business actors and MSMEs in increasing productivity and quality of animal feed packaging. Keywords: packaging machine, measuring system, hand impulse sealer, induction motor, Variable Frequency Drive (VFD)

Page 24 of 24 | Total Record : 235

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