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Masdani, Masdani
Politeknik Manufaktur Negeri Bangka Belitung
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ANALISIS KERUSAKAN MESIN FRAIS FEHLMANN PICOMAX 20 MENGGUNAKAN METODE ROOT CAUSE ANALYSIS DI POLMAN BABEL Sitinjak, Harpois S; Pratama, Adrian Deka; Masdani, Masdani; Napitupulu, Robert
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

This study aims to identify the root cause of damage to the vertical head motion mechanism of the Fehlmann Picomax 20 milling machine at the Bangka Belitung State Polytechnic of Manufacturing using the Root Cause Analysis (RCA) method. This descriptive research with a qualitative approach involves collecting primary data through direct observation and interviews with machine operators and technicians. Secondary data is obtained from the machine's repair history and related literature. Analysis using the 5W+1H and Fishbone Diagram methods reveals that the machine damage is caused by irregular maintenance, the use of inappropriate lubricating oil, the use of low-quality components, and untrained operators. The recommendations for improvement include operator training, regular repairs, the use of appropriate materials, and environmental maintenance. This research successfully achieves its main objective, which is to systematically identify and analyze the root cause of machine damage and provide improvement recommendations to prevent recurring damage.
REKONDISI HEAD MESIN FRAIS FEHLMANN PICOMAX 20 DI LABORATORIUM TEKNIK MESIN POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG Bindara, Bindara; Muhamad, Muhamad; Masdani, Masdani; Feriadi, Indra
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

This study aims to perform a reconditioning of the Fehlmann Picomax 20 milling machine head in the Mechanical Engineering Laboratory of the Bangka Belitung State Polytechnic of Manufacturing. The main damage to the machine head was caused by the accumulation of swarf and frozen grease in the gear and machine column sections. The reconditioning process includes data collection, problem identification, root cause failure analysis using the Root Cause Failure Analysis (RCFA) and 5-Why Analysis methods, repair planning, the repair process, and testing after the repair has been carried out. The test results show that the machine head has been able to function again according to its specifications, including in functional testing, machine performance testing, and column straightness testing. In addition, preventive maintenance has been designed to prevent similar damage from recurring in the future. This project is expected to improve the effectiveness of student learning and extend the operational life of the machine.
Pengaruh Variasi Fraksi Volume Komposit Berpenguat Serat Pelepah Kelapa Sawit Terhadap Kekuatan Tarik Daramawan, Tirta; Masdani, Masdani; Pranandita, Nanda
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 2 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i2.299

Abstract

The use of oil palm fronds is rarely used in the world of research. Oil palm fronds are only used in animal feed such as goats and cows, but in this study, oil palm fronds are used to make composite materials. Composites are a combination of reinforcement and binder. The reinforcement uses oil palm frond fiber while the binder uses resin. In this tensile test to determine the effect of the volume fraction of oil palm frond fiber with a volume fraction of 35%, 40%, and 45% while soaking in 5% NaOH for 2 hours. The results showed a tensile strength of 35% of 30.7 MPa, 40% of 38.8 MPa and 45% of 42.5 MPa. So the highest tensile strength is in the volume fraction of 45% and the lowest tensile strength is in the volume fraction of 35%.
Kekuatan Tarik Komposit Hibrid Berpenguat Serat Batang Pisang Kepok Dan Serat Bambu Dengan Perlakuan Asap Cair Rizki, Muhammad; Masdani, Masdani; Sugiyarto, Sugiyarto
Manutech : Jurnal Teknologi Manufaktur Vol. 17 No. 02 (2025): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v17i02.513

Abstract

The development of technology every year has increased so rapidly. Current technology is developed in various new innovations. Due to the increasing use of metals reducing the availability of natural resources, therefore alternative materials that are environmentally friendly and renewable are needed. Technology in the field of materials, for example, natural fiber composites reinforced with kapok banana stem fiber and bamboo fiber. The purpose of this study was to determine how variations in the volume fraction of hybrid composites can affect the tensile strength of composite materials. Tests were conducted using the ASTM D638-1 standard. The analysis used a direct experimental design method. This study used variations in the volume fraction of kapok banana stem fiber: bamboo fiber 10%: 20%, 15% : 15%, and 20%: 10%. Liquid smoke soaking time is 2 hours. The average value of the tensile test is highest in the composition of kapok banana stem fiber: 10% bamboo fiber: 20% with an average value of 45.8 MPa, while for the lowest tensile test value in the composition of kapok banana stem fiber: 20% bamboo fiber: 10% with an average value of 42.1 MPa.
OPTIMIZATION OF FDM 3D PRINTING PARAMETERS ON THE TENSILE STRENGTH OF FOOD-GRADE PLA FILAMENT USING THE TAGUCHI METHOD Pristiansyah, Pristiansyah; Hasdiansah, Hasdiansah; Subhan, Muhammad; Sukanto , Sukanto; Aswin , Fajar; Masdani , Masdani; Ariansyah , Ariansyah
Jurnal Rekayasa Mesin Vol. 16 No. 3 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Additive manufacturing, particularly 3D printing, has emerged as a transformative technology in digital fabrication, enabling the rapid, accurate, and cost-effective production of complex components. Among the various 3D printing methods, Fused Deposition Modeling (FDM) is one of the most prevalent techniques, employing thermoplastic filaments as its primary material source. This research aims to determine the optimal process parameters to achieve the highest tensile strength in components fabricated using food-grade Polylactic Acid (PLA) filament. To accomplish this, the Taguchi method was implemented as a robust design tool to optimize the manufacturing process, improve material performance, and reduce both cost and resource consumption. The experimental design followed the L27 Orthogonal Array, and the analysis was conducted using the Signal-to-Noise Ratio (SNR) to identify the most significant parameter combinations affecting tensile strength outcomes. The investigated process parameters included extruder temperature, build plate temperature, layer thickness, infill pattern, and deposition speed. Based on the results, the optimal conditions for maximizing tensile strength were identified as follows: extruder temperature of 190 °C, build plate temperature of 60 °C, layer thickness of 0.2 mm, triangle infill pattern, and deposition speed of 60 mm/s. Additionally, the parameters with the greatest influence on tensile strength, ranked from most to least impactful, were: build plate temperature, layer thickness, infill pattern, deposition speed, and extruder temperature.
PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN MEKANIK PADA KOMPOSIT BERPENGUAT SERAT POHON TERAP MENGGUNAKAN RESIN POLYSTER BQTN-157 Abdullah hamid; Masdani Masdani; Idiar Idiar
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Composite is a system composed by mixing two or more different materials, in form and composition. Between two or more materials are insoluble in each other. Composites are very influential on the mechanical properties. The most influential factors are fiber fraction, fiber length and immersion used. This study aims to examine the effect of volume fraction variations on the mechanical properties of applied tree bark fiber reinforced composites. This study used matrix and fiber volume fraction 5% : 95%, 6% : 94%, 7% : 93% with 5% NaOH for 2 hours. The material used is fiber. Applied tree bark. Composites are made using the hand lay up method. The tests carried out were tensile test and Impact Charpy test with ASTM D638 Type 1 tensile test standard and ISO-179 impact test. The result of the highest tensile strength at 7% volume fraction that is equal to 36.32 Mpa. While the results of the smallest tensile strength at 5% volume fraction that is equal to 28.74 Mpa. And the results of the highest composite impact test at 7% volume fraction that is 0.051198 Joul/mm2. Meanwhile, the lowest impact strength was at 5% volume fraction with a value of 0.009652 Joul/mm2.
PENGARUH VARIASI FRAKSI VOLUME DAN LAMA PERLAKUAN NAOH PADA KOMPSIT BERPENGUAT SERAT TEBU DENGAN MATRIKS POLYESTER TERHADAP KEKUATAN TARIK DAN IMPACT sayyid osama; Masdani Masdani; Erwansyah Erwansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Material development is expected to increase efficiency in the field of engineering, judging from the current good material is a material that meets several main standards such as composites. Composite is a material consisting of a mixture of two or more main elements, and composites have a light weight, high strength, corrosion resistance and cheaper price. Presearch aims to find out the effect of variations in volume fraction and length of difference in immersion ofsugarcane fiber using NaOH solution against tensile strength and impact, so that it can be used as potential information about fiber. Sugarcane that can produce a new quality material. The study used variations in volume fractions of 10%, 15% and 20% as well as the length of immersion using NaOH for 30, 60 and 90 minutes. From the tests that have been done, the highest average tensile test value is in the volume fraction of 15% and the length of NaOH treatment of 60 minutes is 36.73MPa and the lowest average value is in the volume fraction of 20% and the length of NaOH treatment is 90 minutes by 21.16 MPa. The maximum average value on the impact test is at a volume fraction of 20% and the length of naOH treatment of 60 minutes is 0.07290 joules / mm², and the average minimum value is in the volume fraction of 10% and the length of naOH treatment is 90 minutes by 0.02849 joules / mm².
Experimental evaluation of static thrust performance of an FDM-printed TPU 95A waterjet thruster Hasdiansah Hasdiansah; Herianto Herianto; Masdani Masdani; Ramli Ramli; Dafi Bazilah; Muhammad Haritsah Amrullah; Zaldy Sirwansyah Suzen; Muhamad Riva'i; Idiar Idiar; Muhammad Subhan
Jurnal Polimesin Vol 24, No 4 (2026): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i4.9048

Abstract

Waterjet propulsion systems manufactured by Additive Manufacturing (AM) offer potential advantages for lightweight marine applications, but experimental data on the static thrust performance of polymer-based waterjet thrusters remain limited. This study presents an experimental investigation of the static thrust performance of a waterjet thruster fabricated from Thermoplastic Polyurethane (TPU 95A) using Fused Filament Fabrication (FFF). Static thrust was measured at rotational speeds of 1500, 3000, 4500, 6000, 7500, and 9000 rpm using a 13 hp internal combustion engine. The results showed a consistent increase in static thrust with rotational speed, from 20 N at 1500 rpm to a maximum of 170 N at 9000 rpm. However, the increase in thrust became less proportional at higher rotational speeds, indicating increasing hydraulic and mechanical losses. These losses may be associated with flow separation, turbulence, tip leakage, and elastic deformation of the TPU impeller under hydrodynamic and centrifugal loading. Despite this behavior, there is not any abrupt thrust fluctuations were observed throughout the tested operating range, indicating stable static thrust generation. The maximum thrust of 170 N demonstrates the capability of the FDM-printed TPU 95A thruster to generate measurable propulsion force under static conditions. The results provide experimental reference data for the development and optimization of additively manufactured waterjet thrusters for small-scale marine propulsion applications.
ROOT CAUSE ANALYSIS KERUSAKAN SISTEM PENGEREMAN SPINDEL MESIN FRAIS AJAX MODEL N2A MKV MENGGUNAKAN METODE 5 WHY Riswanda Riswanda; Niko Julianto; Masdani Masdani; Fajar Aswin
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 6 No. 1 (2026): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

The spindle braking system is one of the most important components in a milling machine because it stops spindle rotation immediately after machining. Failure of the braking system reduces operational safety, decreases machining efficiency, and accelerates component wear. This study aims to identify the root cause of spindle braking system failure in an Ajax Model N°2A MKV milling machine using the Root Cause Analysis (RCA) method with the 5 Why approach. Data were collected through direct observation, machine manual review, electrical testing using a multimeter, and systematic root cause analysis. The results indicate that the braking system failed due to a short circuit in the electromagnetic motor coil, causing excessive current in the AC-to-DC braking circuit. Consequently, the bridge rectifier diode and fuse repeatedly failed. The root cause was identified as coil deterioration caused by prolonged service life. The 5 Why method effectively identified the root cause and provided a basis for corrective actions and preventive maintenance to improve machine reliability.
RANCANG BANGUN MEDIA PEMBELAJARAN SIMULASI KERUSAKAN BEARING BERBASIS ANALISIS GETARAN Ari Togar Maulana; Muhamad Fikri; Ariyanto Ariyanto; Masdani Masdani
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 6 No. 1 (2026): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

The development of Industry 4.0 has shifted maintenance strategies from corrective maintenance to predictive maintenance based on machine condition monitoring. Vibration analysis is widely used to detect machine failures before unexpected breakdowns occur. However, limited learning media in predictive maintenance courses reduce students' practical understanding of bearing fault characteristics. This study aims to design a vibration-based bearing fault simulation learning media to support practical learning activities. The research methods include data collection, tool design, manufacturing, assembly, and testing. The developed system consists of an AC motor, shaft, coupling, bearing housing, speed controller, and bearings with several fault conditions. The results indicate that the system can simulate inner race, outer race, and rolling element defects, producing different vibration characteristics. Therefore, the proposed learning media can improve students' understanding of predictive maintenance and vibration analysis in a practical manner.
Co-Authors Abdullah hamid ACHMAD AFRIADI Ari Togar Maulana Ariansyah , Ariansyah Ariyanto Ariyanto Armannia, Vanessa Oksya Arriyani, Yang Fitri Aswin , Fajar Aswin, Fajar Bindara, Bindara Dafi Bazilah Daramawan, Tirta Dedhe Jumriladin Putra Susila Diah Mayleni Dwi Yulian, Naufal Ego Fernando Ego fernando Erick wiratama Erwansyah, Erwansyah Fajar Abdallah Fajar Aswin Febrian Alfarisyi Feriadi, Indra Harwadi, Harwadi Hasdiansah, Hasdiansah Herianto . Husman Husman Idiar Ilham Ary Wahyudie J Hartati Khadadad Azizi Costacurta Khodad Azizi Costacurta Muhamad Fikri Muhamad Muhamad Muhamad Riva'i Muhammad Haritsah Amrullah Muhammad Iqbal Nugraha Muhammad Rizki Muhammad Subhan Muhammad Subhan Nanda Pranandita Niko Julianto Oktriadi, Yudi Otniel Yulianto Pranata, Yogi Pratama, Adrian Deka Pristiansyah, Pristiansyah Rafly, Rafly Ramli Ramli Randa Randa Ridho Syahputra, Muhamad Ridhoni, Fauzan Riswanda Riswanda Robert Napitupulu Rollastin, Boy Sastra Setiawan Sastra Setiawan sayyid osama Sitinjak, Harpois S Sugianto Sugianto Sugiyarto Sugiyarto Sukanto , Sukanto Suzen, Zaldy Sirwansyah W Afridani Yuli Dharta Yuliyanto Yuliyanto Yuliyanto Zaldy Kurniawan