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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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Ketelitian Geometrik dan Unjuk Kerja Mesin Bubut Retrofit PL 1000 G dengan Kendali Numerik Setyawan, Mohammad Yunan; Budhi M. Suyitno; Susanto Sudiro
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.8gt19t61

Abstract

Development of equipment has been carried out in the form of adding NC systems to conventional lathes, namely PL 1000 G retrofit lathe machines integrated with the GSK 928 TE II control system.The reliability of CNC machines that have been developed needs to be tested in terms of accuracy and precision so that the influence of numerical control systems on the level of accuracy and precision is known.Tests carried out on PL 1000 G retrofit lathes include geometric testing of machine tools and testing of machine performance in accordance with SNI-05-1612-1989. From testing the performance of the retrofit machine using test samples for cylindrical tests, flatness test and thread test results nothing comes out of the tolerance limit. So overall the performance of PL 1000 G retrofit machines with numerical control is in accordance with the requirements of the SNI-05-1612-1989 standard.
Pemanfaatan Limbah Kayu dan Kulit Kopi Menjadi Bahan Bakar Refuse Derived Fuel (RDF) Wahyudi, Wahyudi; La Ode M. Firman
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.yt9kf046

Abstract

Utilization of coffee skin waste into briquettes as a substitute for biogas to support the roasting process of robusta coffee processing is an alternative energy innovation as a substitute for conventional charcoal from wood and biogas from LPG as well as to support energy security. RDF briquettes are a material that is greatly influenced by the characteristic and type of materials that make up the composition. This research aims to determine the effect of the composition of briquettes with a mixture of coffee husk waste and wood dust on calorific value, water content, ash content and Volatile Matter. The method used is experimental. This research made 5 (five) samples that were carried out with various compositions and tested 3 times each. The results showed that sample 3 produced an average calorific value of 7092 kcal/kg, Water Content 7.87%, Ash Content 7.86%, Volatile Matter 14.73% and Fixed Carbon 15.1%, in accordance with the SNI No.1 / 6235 / 2000 standard for wood charcoal briquettes.
Effect of Fins on Charging Performance – Release of a PCM-Based Thermal Energy Operating Simultaneously Musthofa, M. Abdul; Budhi M. Suyitno
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.411pja74

Abstract

The use of organic phase change materials (PCMs) has been widely applied as a filling material for thermal energy storage units (TES) due to its relatively low cost, easy availability, and stable temperature during phase change. However, on the other hand, phase change materials have low thermal conductivity, which results in slow operation duration, considered as a drawback. To address this issue, the use of fins inserted into the PCM in a simultaneously operating TES unit is proposed. The effects of flat and pipe aluminum fins were observed in a TES unit using palmitic acid (PA) and myristic acid (MA) as PCMs, resulting in four experimental variations: palmitic acid - flat aluminum fins (PA1), palmitic acid - pipe aluminum fins (PA2), myristic acid - flat aluminum fins (MA1), and myristic acid - pipe aluminum fins (MA2). These variations were tested from ambient temperature up to the PCM temperature of 90°C and back to ambient temperature. The results showed that visually, PCM melts and freezes earlier in the areas near the fins. Based on the experimental data, PA1 was 4.5% faster than PA2, and MA1 was 8.1% faster than MA2 in terms of TES operation duration. Therefore, it can be concluded that the use of flat aluminum fins makes the operation duration faster compared to pipe aluminum fins. The simultaneous operating system caused the exhaust temperature to increase by an average of 11.1°C during the charging process, while during discharging, the exhaust temperature decreased by an average of 14.5°C across the entire TES unit.
Analisis Laju Korosi Dan Maximum Allowable Working Pressure (Mawp) Pada Jaringan Pipa Hydrant Soleh Sabarudin, Moh; Indra Chandra Setiawan
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/steknobiz.m80e334

Abstract

Development in urban areas is increasingly developing, with various designations, various buildings are built to meet the needs of human life. With the continued growth of gedeung buildings in cities, the availability of land is increasingly expensive because it is limited. High-rise buildings are one of the solutions to this problem, with multi-storey buildings with limited land can get large functions according to the needs of the building designation. The tall building that we usually call a High Risk Building is growing rapidly with the concept of design and construction built with various characters and technological sophistication in it. The building safety system against fire hazards that we know as the Fire Figthing System is one of the systems that must be present in high-rise buildings and one of them is the hydrant system in high-rise buildings. Hydrants must be designed in accordance with existing standards and regulations such as the National Fire Fighting Association (NFPA), SNI, local regulations and other government regulations. With the pressure on the hydrant pipeline network, carbon steel pipes are an option, with water fluid as a standby extinguishing medium in the carbon steel pipeline network, the potential that occurs is corrosion. In the installed hydraulic pipe network already has an installed life of approximately 15 years, then corrosion must occur, with the measurement method using UTM (Ultrasonic Thickness Measurement) the thickness of the existing pipe can be determined. So that it can be calculated whether the corroded pipe network is still safe to use or needs to be replaced with a new pipe. The surface morphology and corrosion products are characterized using Scanning Electron Microscopy (SEM), and Dispersive X-ray Energy (EDX) to determine the characterization of the corrosion process and the elements that cause the corrosion. With a series of checks and calculations of the Maximum Allowable Working Pressure (MAWP) on the hydrant pipeline network, it will be answered whether the installed hydrant pipeline network can still withstand internal pressure.
Modification of Stiffener Sidewall for 17 m³ Capacity Dump Truck at PT. ABC Mahandika, Dhidik; La Ode M Firman; Bambang Sulaksono; Erlanda Augupta Pane; Estu Prayogi; Al Diki Akbar Fitrianto
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.wkf01j02

Abstract

ABC operates within the engineering and construction sector, specializing in the service and provision of advanced heavy equipment, including the DV17 type Dump Truck. This Dump Truck model features a loading and unloading body capable of supporting loads of up to several tons. However, there are noted deficiencies in the effectiveness and efficiency of the Sidewall stiffener section, which utilizes 6 supports. A modification was carried out by creating 3 variants or forms of stiffeners. The design method used is the Pahl & Beitz concept design method, with testing performed through static and dynamic simulations using Finite Element Analysis (FEA). Simulation results show that Variant 2 performed the best in both static and dynamic tests, with static simulation values showing stress at 88 MPa, strain at 0.1, displacement at 0.8 mm, a safety factor of 2.9, and a weight of 818.16 kg. The dynamic simulation for Variant 2 recorded stress at 187 MPa, strain at 0.1, displacement at 1.7 mm, and a safety factor of 1.3. When compared to the existing design by PT. ABC, Variant 2 demonstrates superior performance. The current PT. ABC design presents static simulation values of 301 MPa for stress, strain of 0.1, displacement of 4.7 mm, and a safety factor of 0.8. Dynamic simulations reveal a stress value of 411 MPa, strain of 0.1, displacement of 5.1 mm, a safety factor of 0.6, and a weight of 802.63 kg. This indicates that Variant 2 provides optimal performance and a balanced trade-off between safety and stability.
Cover, Kata Pengantar, Daftar Isi
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 15 No. 2 (2025): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.195r5j58

Abstract

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Effect of Rotation on the Performance of Paddle Wheel Type Pond Waterwheel Ridwan, Ridwan; Irawan, Rudi
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: 10.35814/86egyt94

Abstract

Aerator is a very important equipment in fish farming. The availability of sufficient oxygen in the water greatly affects the growth of fish or shrimp in pond cultivation. Besides that, the use of energy in generating or producing dissolved oxygen in ponds cultivation must be as efficient as possible decreasing that cost perations. The purpose of this research was to obtain the best performance of the Paddle wheel type aerator to increasing the dissolved oxygen in pond water with the lowest energy consumption used in producing or increasing the dissolved oxygen in ponds cultivation. The research method was experimentally for the aerator paddle wheel type with eight blades, and 16 holes on each the blade. There were four variations of rotation on the blades or rotors, namely: Rotation per minutes (RPM): 80, 100, 120, and 140. The results of the research showed that at a rotation speed of 120 RPM it provided the most optimal performance, the most efficient use of energy to increase the dissolved oxygen content compared the others RPM.
Computational Study Of Static Load on Fem Based Electro-Hydraulic Operating Bed Structure in Solidworks Ignatius Henry Ismadi; Peter Hagios Asa; Doni Raharjo; Benediktus Indra; Yudha Samodra
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/mm5td585

Abstract

The electro-hydraulic operating table is a vital component in contemporary surgical systems, responsible for supporting the patient’s body throughout various procedures. Ensuring the structural strength and stability of the bed frame is critical for maintaining patient safety and enhancing procedural success. This study investigates the mechanical performance of key substructures within the bed unit, namely the cranial support structure, dorsal frame, pelvic base, and lower limb support frame. A static structural analysis was conducted using SOLIDWORKS Simulation software, incorporating load distribution data based on a 280 kg patient. Results revealed maximum stress values of 14.888 N/mm² (cranial support), 105.621 N/mm² (dorsal frame), 2.495 N/mm² (pelvic base), and 81.185 N/mm² (lower limb support). All stress values were below the yield strength of aluminum casting (220 N/mm²), indicating structural safety. The findings suggest that the current frame design is mechanically reliable and suitable for clinical deployment under specified load conditions.
TRANSMISSION SYSTEM PROTOTYPE AS SPEED OPTIMIZATION IN THE POWER DRIVE MECHANISM OF THE MAKER S4000 MACHINE AT PT DM Mahernanda Putanto, Christian Yokevin; Nugraha, Aditya; Nugroho, Yohanes; Karyadi, Bagus
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/gws9wp29

Abstract

The S4000 maker machine at PT DM faces issues during the cigarette rod cutting process due to a mismatch in speed between the servo motors in the feeding and cutting processes. This lack of synchronization results in imprecise cuts and an increase in defective products. This problem indicates the need for a system capable of mechanically synchronizing the rotational speeds between the two processes. This study aims to design a gear transmission system as a solution to synchronize the speeds between the feeding and cutting processes. Problem analysis was conducted using the Failure Mode and Effect Analysis (FMEA) method. The design process follows the VDI 2221 method, which includes functional requirement analysis, development of several conceptual alternatives, evaluation of transmission ratios, and selection of suitable mechanical components. Structural strength analysis was carried out through simulations using Finite Element Analysis (FEA). A system prototype was created using 3D printing as a design verification tool. The results show that the transmission system is capable of delivering synchronized rotation, resulting in consistent cigarette rod lengths. The FEA simulation indicates the system is safe under working loads. The prototype was successfully validated both visually and functionally, serving as a basis for evaluation prior to actual implementation
Optimization of Vice Manufacturing Cost Using VDI 2222: Balancing Strength, Weight, and Cost Fidelis Gigih Triatmaja, Fidelis Gigih Triatmaja; Christian Unsu Taolin; Devano Fajar Hermawan; Utomo, Archi Kun Cahyo
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/vw04q586

Abstract

This study presents the redesign of a machine vice used in the Great D1 universal grinding machine, to improve manufacturability, reduce weight, and minimize production costs. The redesign process followed the structured VDI 2222 product development methodology, which includes four phases: task clarification, conceptual design, embodiment design, and detailed design. Through a systematic evaluation of design variants using technical and economic criteria, the final concept was selected and refined using CAD modeling and CNC-oriented manufacturing strategies. The resulting design maintained functional performance while achieving a weight reduction of over 30% and a machining time reduction of more than 50%. Material cost savings were also achieved by using a hybrid structure, with cast iron for the base and aluminum for the movable components. Overall, the total production cost was reduced by approximately 41.8%. In addition to economic benefits, ergonomic improvements such as modular part construction and improved accessibility were realized. These outcomes demonstrate that the structured application of VDI 2222 enables effective redesign of legacy equipment and provides measurable improvements in cost, usability, and production efficiency.

Page 38 of 40 | Total Record : 398

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