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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN VANOS Journal of Mechanical Engineering Education Journal Technology and Implementation Bussines Infotekmesin Jurnal Teknologi dan Terapan Bisnis Jurnal Teknologi dan Terapan Bisnis
Puguh Elmiawan
Politeknik Gajah Tunggal
Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISA KEHANDALAN PADA MESIN JOINTLESS DENGAN METODE RELIABILITY CENTERED MAINTENANCE Puguh Elmiawan
Jurnal Teknologi dan Terapan Bisnis Vol. 2 No. 1 (2019): Vol 2 No 1 (2019): Jurnal Teknologi dan Terapan Bisnis
Publisher : UPPM Akademi Komunitas Semen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0301/jttb.v2i1.64

Abstract

In the production department of the D&K Building plant which serves as a place to assemble tire building materials to become a green tire, there is a jointless machine which functions to install jointless material to be assembled with other materials. The frequency of damage in jointless machine components is still high that causes the high losstime. The high losstime indicates a small value of reliability of the machine. The data needed in this study are damaged engine components, engine failure period, and engine component replacement time. In this study, critical components were analysed. The methods used in this analysis were FMEA, LTA and MTTF. The result of the analysis showed that the bearing is jammed with an average reliability of 49% with an MTTF value of 30 days. Broken bearings value an average reliability of 8.5% to an MTTF value of 56 days. Piping accessories (jointless stopper) the average value of reliability is 52% to an MTTF value of 145 days. The stopper bolt has an average reliability of 50% to an MTTF value of 385 days. The results showed that the determination of the critical component replacement time interval can determine the appropriate maintenance activities on the Jointless machine so that the right RCM decision for the company can be achieved.
Analysis of the Effect of Blade Thickness on Propeller Water Turbine Performance Using Computational Fluid Dynamic Fajar Paundra; Akhmad Nurdin; Hamid Abdillah; Puguh Elmiawan
VANOS Journal of Mechanical Engineering Education Vol 7, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/vanos.v7i1.14979

Abstract

Hydropower on the lowest scale namely propeller pico-hydro, the turbine has a light workload so that allows it to be made from polymer materials with rapid manufacturing 3D printing technology.  In the design of the propeller turbine, the most concerned loading is the axial load which results in failure. A failure of designing the dimensions of the propeller turbine with polymer materials causes a fracture in the blades. This study aims to analyze how the effect of blade thickness on the performance of a propeller water turbine. Data collection in this study uses numerical simulation through computational fluid dynamics using SolidWorks Flow Simulation with the blade thickness variable used 1 mm to 3 mm with a fillet size 1.5 mm. Based on the results, the thickness of the blade affects the value of static torque. At a blade thickness of 2 mm, it shows the most optimal torque value compared to a thickness value below or above 2 mm.
ANALISA KEHANDALAN PADA MESIN JOINTLESS DENGAN METODE RELIABILITY CENTERED MAINTENANCE Puguh Elmiawan
Jurnal Teknologi dan Terapan Bisnis Vol. 2 No. 1 (2019): Vol 2 No 1 (2019): Jurnal Teknologi dan Terapan Bisnis
Publisher : UPPM Akademi Komunitas Semen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0301/jttb.v2i1.64

Abstract

In the production department of the D&K Building plant which serves as a place to assemble tire building materials to become a green tire, there is a jointless machine which functions to install jointless material to be assembled with other materials. The frequency of damage in jointless machine components is still high that causes the high losstime. The high losstime indicates a small value of reliability of the machine. The data needed in this study are damaged engine components, engine failure period, and engine component replacement time. In this study, critical components were analysed. The methods used in this analysis were FMEA, LTA and MTTF. The result of the analysis showed that the bearing is jammed with an average reliability of 49% with an MTTF value of 30 days. Broken bearings value an average reliability of 8.5% to an MTTF value of 56 days. Piping accessories (jointless stopper) the average value of reliability is 52% to an MTTF value of 145 days. The stopper bolt has an average reliability of 50% to an MTTF value of 385 days. The results showed that the determination of the critical component replacement time interval can determine the appropriate maintenance activities on the Jointless machine so that the right RCM decision for the company can be achieved.
AKURASI MESIN CNC ROUTER LOW BUDGET BERBASIS MACH 3 Puguh Elmiawan; Dharmanto Dharmanto; Adik S.W; M Fazalul M; Arief R
ROTOR Vol 15 No 2 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v15i2.34645

Abstract

This paper discusses the building of a low-cost CNC router machine. In designing a CNC machine using an electrical actuator as the driving force, we use a nema 23 stepper motor combined with a pitch 2 mm timing belt to drive the machine on the x and y axes. On the z-axis, we use a stepper motor and a linear screw to drive the machine. This machine is often used to cut and engrave wood, acrylic, and PCB objects. The design drawing that has been made on the PC is sent to the microcontroller using serial communication, then the CNC performs work on the thing according to the coordinates. The spindle will create a pattern on the thing automatically according to the design drawing. Measurement was made using a caliper with an accuracy of 0.05 mm. This CNC machine is performing duly as ordered by the mach3 micro controller. The machine test results show an accuracy value of 99.85% on the x-axis, 99.74% on the y-axis, and 99.12% on the z-axis.
ANALISA KEHANDALAN PADA MESIN JOINTLESS DENGAN METODE RELIABILITY CENTERED MAINTENANCE Puguh Elmiawan
Jurnal Teknologi dan Terapan Bisnis Vol. 2 No. 1 (2019): Vol 2 No 1 (2019): Jurnal Teknologi dan Terapan Bisnis
Publisher : Program Studi Teknologi Informasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0301/jttb.v2i1.64

Abstract

In the production department of the D&K Building plant which serves as a place to assemble tire building materials to become a green tire, there is a jointless machine which functions to install jointless material to be assembled with other materials. The frequency of damage in jointless machine components is still high that causes the high losstime. The high losstime indicates a small value of reliability of the machine. The data needed in this study are damaged engine components, engine failure period, and engine component replacement time. In this study, critical components were analysed. The methods used in this analysis were FMEA, LTA and MTTF. The result of the analysis showed that the bearing is jammed with an average reliability of 49% with an MTTF value of 30 days. Broken bearings value an average reliability of 8.5% to an MTTF value of 56 days. Piping accessories (jointless stopper) the average value of reliability is 52% to an MTTF value of 145 days. The stopper bolt has an average reliability of 50% to an MTTF value of 385 days. The results showed that the determination of the critical component replacement time interval can determine the appropriate maintenance activities on the Jointless machine so that the right RCM decision for the company can be achieved.
Pengaruh Variasi Waktu Curing Pada Kegagalan Uji Bending Komposit Sandwich Serat Karbon Dengan Core PVC Foam Fajar Paundra; Joy Rivaldo Aritonang; Eko Pujiyulianto; Abdul Abdul; Puguh Elmiawan
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2730

Abstract

Curing is a method used to enhance the performance of composite materials by heating them in an electric oven for a specific duration and at a controlled temperature. This study aims to examine the effect of curing time variations on the failure analysis of carbon fiber sandwich composites with a PVC foam core under bending tests. The materials used in this research include polyester resin, 240 gsm carbon twill fiber, and a 5 mm thick PVC foam core. The manufacturing method applied was vacuum bagging, followed by a curing process with time variations of 30 minutes, 60 minutes, 90 minutes, and 120 minutes at a constant holding temperature of 80°C. Bending tests were carried out according to ASTM C393 standards. The highest bending strength of the sandwich composite was achieved with a curing time of 120 minutes, reaching 45.55 MPa, while the lowest strength was observed in the specimen without curing, at 25.76 MPa. The failures observed after bending tests included core failures such as core crush, indentation, and delamination, as well as skin failures like micro buckling.
Co-Authors Abdul Abdul Adik S.W Arief R Dharmanto Dharmanto Eko Pujiyulianto Fajar Paundra Hamid Abdillah Joy Rivaldo Aritonang M Fazalul M Nurdin, Akhmad