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Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin
Published by Universitas Pancasila
ISSN : 20885784     EISSN : 26209675     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Jurnal Teknobiz dipublikasikan sebanyak 3 (tiga) kali dalam 1 (satu) tahun yaitu pada bulan Maret, Juli dan November. Lingkup Jurnal Teknobiz meliputi bidang energi baru terbarukan, dan manufaktur. Bidang energi baru terbarukan yang dibahas mengenai sistem dan alat teknologi konversi yang mampu mengkonversi sumber energi terbarukan seperti energi tenaga air, tenaga angin, tenaga surya, biomassa, dam lain-lain untuk dapat dimanfaatkan energinya ke bidang sektor yang lain. Bidang manufaktur yang dibahas meliputi bidang material, tribologi, dan lain-lain.
Arjuna Subject : -
Articles 398 Documents
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Analysis of the Effect of the Number of Valve Openings on the Performance Value of the Pelton Turbine Prototype Sandra Mayang Dika Ridwan; Saputra, Alfian
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/n7hpbe40

Abstract

The Pelton turbine is a type of impulse turbine that utilizes a high-pressure water jet through a nozzle to rotate the turbine buckets. One factor influencing turbine performance is the number of valve openings, as the opening size determines the water flow rate directed to the turbine. This study aims to analyze the effect of the number of valve openings on the performance of a Pelton turbine prototype. The research method employed is an experimental approach by varying the valve openings, resulting in different water flow rates, followed by measurements of torque, water power, turbine power, and efficiency. The tests were conducted under a constant load of 1 kg with 12 buckets. The results show that the maximum torque obtained was 0.2695 Nm. The highest water power of 15.41 W occurred at a flow rate of 30 LPM, while the lowest water power of 10.03 W was recorded at the smallest flow rate. The highest turbine power was 9.45 W, and the maximum efficiency was achieved at a flow rate of 26 LPM with valve openings producing an effective nozzle diameter of 9–11 mm, reaching 90.97–91.38%. The lowest efficiency was observed at a valve opening equivalent to a 9 mm nozzle diameter, at 22.15%. These findings indicate that the number of valve openings has a significant effect on Pelton turbine performance, particularly in terms of efficiency and output power
Optimization of Pipe Length Parameters, Number of Valves and Compressor Operations to Reduce Electricity Consumption Nurhadi, Achmad; Indra Chandra Setiawan
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/jgyzws58

Abstract

Compressed air is a frequently used energy supply tool in industrial processes. Energy audits and energy-saving measures focus only on technical issues that affect energy efficiency. Related operating issues of compressed air systems are rarely addressed towards energy efficiency. Only 21% of participants in the Australian energy audit program recommended energy-saving measures for compressed air systems. The largest electricity consumption in an automotive factory is on the compressor engine which is needed for the pneumatic needs of machines, dies, and jigs so optimizing the parameters of pipe length, number of valves and compressor operation to reduce electricity consumption is needed. The research method uses the Taguchi method and is reviewed by monitoring the Cumulative Sum Control Chart (CUSUM) after conducting experiments. The experimental results on the parameters of pipe length 668 m, number of valves 6 pcs and operational compressor 185 kW are the most optimal parameters to reduce electricity consumption 198,000 kWh / year with the resulting pressure of 5.43 bar and a pressure drop of 1.57 bar
THE DESIGN OF DEBURRING AIDS TO INCREASE THE PRODUCTION EFFICIENCY OF KN0081 SPACERSAT PT. XYZ Andrian, Yohanes Oscar; Zefanya Rangga Prangestya2; Sutrisno; Yohanes Nugroho; Archi Kun Cahyo Utomo
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/7kkf5d09

Abstract

Deburring is one of the important production processes in part manufacturing. Spacer KN0081 is one of the parts of the fuel bracket protractor that functions as a distance guard between the bracket and components in the car engine system. The focus of the deburring process is the quality of the deburring and the cycle time of the process. The quality and efficiency of the deburring process can be improved by using tools for the deburring process. The design of the deburring tool uses a collet clamping mechanism and an interlock system. The spacer is clamped using a collet, then deburred. The interlock mechanism allows the adjustment of the tool's rotation angle to facilitate the setting process. The research method used is VDI 2221 as a design tool and SOLIDWORKS software as a device for creating the design. The best variant design was selected based on technical and economic assessments resulting in a design solution for the deburring spacer product KN0081. The result of the process cycle time analysis is 0.55 minutes for the processing of 1 spacer. Based on cycle time analysis calculations, deburring tools can improve spacer quality and reduce deburring process cycle time to 80% more efficient.
OPTIMIZATION OF CAPILLARY PIPE DIAMETER FOR THE PERFORMANCE OF A 100-LITER CAPACITY ICE PLANT AS A MEANS OF PRESERVING FISH Tupamahu, Cendy; Salamor, Axel; Nuha, Widyastutifajri
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/j94whk49

Abstract

The capillary tube is an expansion device in the vapor compression refrigeration cycle (VCRC) that functions to reduce refrigerant pressure from high to low levels. The tube’s diameter and length significantly affect the pressure and performance of the refrigeration system. Therefore, selecting the appropriate capillary tube size is essential to achieve optimal system operation. This study aims to determine the optimal capillary tube diameter to improve the performance of a 100 liter ice maker unit utilizing a 1 PK air conditioner outdoor unit as the condensing unit. The system is designed to support an efficient and simple ice freezing process for fish preservation. The main variable analyzed is the capillary tube diameter (0.028 inch, 0.031 inch, and 0.040 inch). Evaluation parameters include refrigeration effect (Qc), compressor work (Wk), condenser heat rejection (Qk), and coefficient of performance (COP). The results indicate that a 0.028-inch capillary tube yields a refrigeration effect of 345.35 kJ/kg, compressor work of 78.26 kJ/kg, and a COP of 3.41. The 0.031-inch and 0.040-inch diameters result in COP values of 3.31 and 3.29, respectively. Therefore, the 0.028-inch capillary tube provides the highest performance and is considered the most suitable for the 100 liter ice maker system.
ANALYSIS OF HYDRAULIC POWER REQUIREMENTS OF CONTINUOUS COLORING LINE AREA EXIT MACHINE Rohman, Rohman; Ade Kristian; Jatira; Yadi Heryadi
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/et449261

Abstract

In the metal processing industry, hydraulic system play a crucial role in supporting the operation of production machines such as cut shear, mandrel, and coil cart. These machines rely on hydraulic power to function efficiently and reliably. This study aims to analyze and calculate the pressure and optimal hydraulic power required for each machine in the exit area of the continuos coloring line (CCL). The methodology includes measuring actual hydraulic pressure based on variations in the thickness nada width of galvalume sheets as coil weights, followed by quantitative descriptive analysis. The result show that the hydraulic pressure required by the cut shear machine varies from 58,1 bar to 139,62 bar depending on sheet galvalume dimensions. The mandrel machine pressure ranging from 15,93 bar to 28,93 bar depending to weight coil,, while the coil cart needs between 21,30 bar and 38,70 bar depending to weight coil. The highest recorded pressure reached 207,25 bar when all machine operated simultaneously under maximum load, approaching the pump is maximum capacity of 210 bar. This indicates that the system operates at near-optimal levels but closes to its safety threshold, thus requiring technical attention to maintain system reliability.
MICROBIAL ELECTROLYSIS CELL CARBON ANODE WITH VOLTAGE VARIATION FOR HYDROGEN GAS PRODUCTION Alphanoda, Abid Fahreza; Ramadhan, Afnaz Nurfalah
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/48adg368

Abstract

The global energy crisis and environmental impacts of fossil fuel usage have accelerated the development of sustainable renewable energy sources. Hydrogen (H₂) has emerged as a promising clean energy carrier due to its high calorific value and zero carbon emissions. This study aims to develop and optimize a Microbial Electrolysis Cell (MEC) system that utilizes palm oil waste as a substrate for hydrogen production. Using anaerobic bacteria, MECs convert organic compounds in the waste into electrons and protons, which are then electrochemically transformed into hydrogen gas with the aid of an external power source. The research involves a dual-chamber reactor setup (anode and cathode) using carbon electrodes and a proton exchange membrane, monitoring the volume of hydrogen gas generated. The results are expected to improve energy conversion efficiency, significantly reduce industrial waste, and contribute to the advancement of applicable clean energy technologies. MEC technology presents an innovative dual-solution approach by integrating waste treatment with renewable energy production efficiently. 
Cover, Foreword, Table of Contents editor
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 3 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/d3d6wy81

Abstract

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Standardized Concept Design of Structural Testing and Camber of Railway Flat Wagons soebagyo, hary; T. K, Arief Riyadi
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 1 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/25xj3k71

Abstract

The train is a means of mass transportation that functions to transport people and goods. The level of train safety must be maintained during operation, especially the structural parts which must be strong and reliable in accepting the loads they carry following RAMS provisions (Reliability, Availability, Maintainability, Safety). The main structural part of concern is the lower frame of the train carriage whose main function is to support all the loads received. The design of the lower frame structure is made in such a way that it is slightly curved so that there is a pre-stress load that can withstand bending loads when the structure is loaded. This slightly curved structural design is called "camber" where camber is defined as the lowest distance between the midpoint of the span of the carriage structure and the fulcrum. Considering the importance of flat carriage structures and their camber, it is necessary to create standard structural testing and camber measurement standards for the railway industry in Indonesia. This paper discusses how to develop standard concepts for testing methods and measuring camber values ​​which refer to international standards and applicable laws and regulations in Indonesia. The results of this study are in the form of a design concept containing methods and stages for testing of the lower frame structures and measuring the camber of the lower frame structures of the train. This concept can be used as initial material for developing national standards in the manufacture of the lower frame structure of the train.
Design and Construction of a Bending Test Machine Using the VDI 2222 Method and Accuracy Verification Using UTM Prabandono, Bayu; Laurentius Sumadi; Paulinus Cherlyndo Paterias; Ivo Arya Gustantia; Yanuarius Wahyu Utama; Bondan Wiratmoko Budi Santosa; Agus Kurniawan
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 1 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/685vfb39

Abstract

Plastic material testing is conducted to determine the mechanical properties and strength characteristics of plastic materials. The selection of appropriate plastic material is a critical aspect in product design to ensure optimal strength and quality. At PT XYZ, a discrepancy was identified between the elastic modulus values stated in the material datasheet and those observed in the actual product material. Such differences can affect the fracture limit, resulting in products that do not meet design specifications. In response to this issue, a product bending test machine was proposed and designed. The VDI 2222 methodology was utilized in the design process, and testing was performed using PMMA specimens in accordance with ASTM D790 standards. Verification was conducted using the Zwick Roell Z020 Universal Testing Machine, accompanied by analytical calculations to determine the accuracy of the newly designed machine. The study resulted in alternative design options for the bending test machine based on the requirements list and calculated accuracy levels. The accuracy results showed a force accuracy of 98.63%, displacement accuracy of 58.67%, and stress accuracy of 97.34%. The significant deviation in displacement is suspected to be due to system incompatibility and additional jig components that were not perfectly perpendicular to the pressing plane, leading to measurement errors. The current prototype of the product bending test machine is considered not yet suitable for industrial applications. Further review is required, particularly in calibrating the displacement between the mechanical components and the electronic control system.
Optimization of Production Scheduling on the Nct Vipross 255 Machine Using the Heuristic Priority Dispatching Rules Method and Overall Equipment Effectiveness Oloan; Budhi Muliawan Suyitno; Susanto Sudiro
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 1 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/mszjbf44

Abstract

Scheduling is defined as the process of allocating resources or machines – machines for scheduling a set of tasks in a specific time period, then based on the Priority of the job one Dispacthing Rules have a high priority for the further processed on the machine. This research uses a scheduling and Dispatching Rules Such As Oee The best production scheduling results i.e. use rules Such As the Total value of Flow Time of 1708.61 minutes into 1288.14 minutes, Average Flow Time of 170.86 minutes, Utilitasn minutes, 128.81 became the engine of the menigkat 20% to 26% and the average queue job from 5.06 seconds be 3.81 minutes. The results of the second best production scheduling also uses the rules to all the components of the job SUCH AS the total value of maximum Flow time of the 594.35 minutes be 348.17 seconds, the average completion time maximum 34.96 seconds, becoming 23.7 seconds and the average queue job maximum 7.23 minutes be 5.12 seconds, the result of the calculation of the value of the Avaibility Rate (AR) 5.86%, the value of the performance Rate (PR) 91.34%, Rate Of Quality 97,15, Overal Eqiupment Effektivines (OEE) 83.76%

Page 39 of 40 | Total Record : 398

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