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Analisa Effectiveness Mesin Threser Di PTPN V Sei Garo Menggunakan Metode Analytical Hierarchy Process (AHP) Aria, Dedek; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This research is aimed to analyze production process at threser station using Overall Equipment Effectiveness (OEE) and AHP methods in PTPN V Sei.Garo factory. The research methodology consists of three main steps: (1) gathered data, (2) calculate the OEE values to analyze the losses, (3) evaluated the big losses using the AHP method. The calculation of the OEE values based on the 6 months data period, from March to August 2017. There were six big losses analysed in this research i.e.: breakdown losses, setup and adjustment losses, idling and minor stoppage losses, reduced speed losses, rework losses and reduced yield losses. A loss analysis can be indicated in low OEE values result. From the analysis of OEE calculation results were obtained the OEE values rate of the threser machine during research period of 74.11%. It was below the world class standard (below 85%). Result of the analysis of six big losses was obtained the significant losses affect the OEE value of idle minor losses. The high idle and minor losses of the threser machine should be removed by determine action to minimize the causes of losses. Furthermore, it was chose the alternative action to overcome the highest losses using Analytical Hierarchy Process (AHP) method. The result shown alternative weighted data to reduced the idle and minor losses priority of periodically checking (0.29), SOP application (0.28), retraining (0.27), and maintain cleanliness (0.15). Therefore, to reduced the losses and improve the effectiveness of threser station can be implemented Total Productive Maintenance (TPM) pillars such as focused maintenance (periodically check the machine components) and autonomous maintenance.Keywords: OEE, Threser machine, Analytical Hierarchy Process

Analisa Mesin Generator Pada Sistem Pembangkit Listrik Tenaga Gas Menggunakan Metode Total Productive Maintenance (TPM) (Studi Kasus : PLTG Tanjung Datuk, Pekanbaru) Nurjaman, Jajang; Susilawati, Anita; Romy, Romy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The gas power plant in Tanjung Datuk has been required in optimal condition, because it has crucial role to supply electricity for Pekanbaru areas. This research purposed to analyze and evaluate the performance of generator machine at gas power plant in Tanjung Datuk. There are two generator machines that always operate for 24 hours, so the maintenance of these machines has been essential to applied. One of maintenance approach is the Total Productive Maintenance (TPM). In this research, the TPM tool to measure effectiveness machine of generator used Overall Equipment Effectiveness (OEE), continued to analyze the OEE six big losses. After that, calculation of Mean Time To Failure (MTTF) and Mean Time To Repair (MTTR) to know the lifespan or maintenance on generator machine especially on AVR (Automatic Voltage Regulator) component. The results were obtained the OEE value rate of 63.98%, the value of MTTF and need to be treated every 1,688.17 hours, while for the MTTR value of 1.831 hours. To improve the effectiveness of the generator machine has done the maintenance in accordance with the appropriate schedule and implementation of the TPM approach.Keywords: OEE, Generator, TPM, Mean Time To Failure ( MTTF) dan Mean Time To Repair (MTTR).

Pengaruh Kuat Arus Dan Kecepatan Pengelasan Smaw Sistem Sliding Adaptive Two Axis Terhadap Hasil Pengelasan Baja Karbon Rendah Putra, Ivan Fadillah; Yohanes, Yohanes; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Low carbon steel can be welded with all types of welds. One of the welding techniques is SMAW (Shielded Metal Arc Welding), which has its own advantages, under which the large current can be varied as the heat source used, easy to use in different welding positions and penetration and width of melting electrodes can be adjusted. This study uses an SMAW welding machine with a sliding adaptive two-axis system that varies the current strength and welding speed according to the characteristics of the weld, by visual observation, tensile strength and microstructure on the weld. The parameters were varied from the strength of the 90 A, 100 A and 120 A currents and the welding speed controlled by the Arduino Uno with the rotation of the stepper motor as a driver. The material used a low-carbon steel, using V camp with a vertical angle of 600. The results of the study show that the highest tensile strength of 505.31 Mpa and the lowest value of 224.20 Mpa. The micro-weld structure was determined by many factors, including heat input, current, welding speed and cooling speed. In this study, the HAZ area has a larger grain structure than the base metal and the weld metal.keywords Current, Welding Speed, SMAW, Sliding Adaptive Two.

Peningkatan Performa Mesin Dapur Semi Kupola Menggunakan Metode Total Productive Maintenance (TPM) Dan 5S (Studi Kasus: CV. Sispra Jaya Logam Pekanbaru) Randa, Nofri; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Total Productive Maintenance is an innovative approach to maintenance that optimizes equipmenteffectiveness, eliminates damage and develops autonomous maintenance by the operator through daily activitiesinvolving all workers. This study aims to improve the performance of semi-cupola furnace machine byimplementing Total Productive Maintenance and 5S maintenance strategies as work culture in CV. Sispra JayaLogam. The steps of method were collect data, compute the value of Overall Equipment Effectiveness (OEE),Six Big Losses analysis, statistical analysis with SPSS 20 and proposed improvement using 5S method. Theresult of this research was revealed the OEE value rate in June 2017 period that was 84,09%, which was havenot yet fulfill world class OEE standard (85%). From the analysis of six big losses, the most dominant factorinfluences the OEE value, namely set up and adjustment losses, and idling losses with value rate was 22.33%and 22.33% respectively. Based on Pareto chart and fishbone diagrams analyses may be caused by lessresponsive operators and lack of machine maintenance. To improve the performance of semi-cupola furnacemachine, it is necessary to make improvements using the 5S method and implementing the TPM pillar such asplanned maintenance and autonomous maintenance.Keywords : TPM, Method 5S, Overall Equipment Effectiveness (OEE), Six Big Losses, Fishbone Diagram.

Perencanaan CAD CAM Mesin CNC Milling Router 3 Axis Dengan Perangkat Lunak Mastercam Fahlevi, Muhammad Reza; Syafri, Syafri; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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A CNC (Computer Numerically Controlled) machine is a machine tool that can work automatically. The CNC machine sends operational instructions that are inputted via a computer that is directly connected to the machine. This CNC machine uses PC (Personal Computer) as main control with windows platform for Operation System (OS). The CNC programming becomes an important element of the machine in work. The numerical signals are inputted into the Mach3 software as the main controls for the movement of axis (axes) x, y, and z as well as spindles. EIA-RS 274D programming format or G & M codes are used in this study for further adjustment of characters per character so that bug error does not occured on Mach3. Therefore, a CNC machine programming plan is created to adjust the machine, which can work according to the design of the Mastercam software. Mastercam software is selected because it has the completeness to design and obtain program instructions with simulation. Mastercam is a full-featured modeling software that combines 2D and 3D frame and surface geometry with editing and transformation capabilities. The G & M codes were generated by Mastercam that would be adjusted by removing G2 and G3 commands, which circular or unidirectional motion commands. In conclusion, this research revealed the program adjustment and program execution of a CNC program creating with CAD CAM system into the interface, therefore the CNC machine can be controlled by the PC device.Key words : CNC, Mastercam, G & M Codes, Mach3

Manajemen Sistem Informasi Perlengkapan Dan Peralatan Bengkel Sepeda Motor Umum Skala UKM (Usaha Kecil Dan Menengah) berbasis Komputerisasi Simaskot, Johar; Arief, Dodi Sofyan; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Motorcycle repair shop management is to manage the motorcycle workshop to be effective and efficient. Good workshop management must also be supported by a properly administration, in order to record all the resources that become workshop assets. Moreover, the motorcycle workshop also conducts spare parts sales to complete the replacement needs of broken vehicle spare parts. This study aims to analyze and design a workshop information system for small and medium enterprises (SMEs) engaged in the field of repairing of motorcycle. Generally the SMEs motorcycle workshops in this research, still uses a simple management system and manually in presenting the data required by the workshop. This it make difficult and inconvenient for the owner of a small and medium-scale of motorcycle workshop. Sequence, it is necessary to optimize the management system and change the simpler manual system to be computerized. One way is by implementing the 5S (Sort, Straighten, Shine, Standardize, Sustain) methods and creating an information system that can manage equipment in SMEs scale of motorcycle workshops. Stages of the method in this study: (1) survey of general workshop management SMEs scale, (2) do analysis of data obtained during the survey and provides input for workshop management based on 5S method, (3) to design and create information systems and databases using PHP (Hypertext Preprocessor) as the programming language and MySQL as the database. By implementing 5S management and this information system can help streamline the services of SMEs scale of motorcycle workshops.Key Words: Motorcycle Workshop management, 5S Method, PHP, MySQL, Information System.

Analisis Kerusakan Mesin CNC Milling Menggunakan Metode Fault Tree Analysis (FTA) Dan Failure Mode And Effect Analysis (FMEA) (Studi Kasus Mesin CNC Milling Di Lab. Jurusan Teknik Mesin, Universitas Riau) Saputra, Rio Agus; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The CNC machines are computer-controlled machines using numeric codes, symbols and letters as command data. A CNC Milling machine at the Mechanical Engineering Laboratory of the University of Riau has damaged and disrupted engine performance. The purpose of this study is to determine the types of damage, causes, and efforts and suggestions of actions that can be done to improve engine performance for CNC milling in Riau University Laboratory. The method is used in this research of the Fault Tree Analysis (FTA) method which is used to find the caused of the damage to the basic event and Failure Mode and Effect Analysis (FMEA) that is used to search priority problem through Risk Priority Number (RPN). The result showed damaged of components such as pneumatic cylinders of protective door, ATC pneumatic brauer units, pneumatic valves and saddle. The result of critical component analysis of leakage on pneumatic valve component was the most critical risk with RPN of 448. The actions to reduce the highest of RPN were repairing, prevention and maintenance on the CNC milling machine. Proposed repair was the replacement of components that have been damaged and optimize the precautions and maintenance in accordance with the instructions in the manual book.Keyword: FTA, FMEA, RPN, CNC Milling machine

Manajemn Sistem Pergudangan/Warehouse Peralatan Laboratorium Teknik Mesin Universitas Riau Berbasis Komputerisasi Iskandar, Anwar; Susilawati, Anita; Arief, Dodi Sofyan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The warehouse management is a system to manage a storage and handling of goods and material, which are stored and distributed in a right time, amount and the specification. The Laboratory of Mechanical Engineering, University of Riau is equipped with goods and material to support its activities. Hence, it is needed a system to manage the storage and handling of such equipments in optimal manner. Recently, the warehousingat the Laboratory of Mechanical Engineering, University of Riau has been used the manual system. Subsequent, there was not optimal to manage activities in the laboratory such as time consuming, mess of storage, difficulty in finding data equipments, etc. This research aim is to design and develop a warehouse management system of the Laboratory in Mechanical Engineering, Riau University. A method of 5S (Sort, Straighten, Shine, Standardize, Sustain) and the warehouse laboratory based information system were implemented in this research. Stages to construct the information system of warehouse management were: the design of database system, the menu structure, sub-systems and the display model of interface system (users interface). This systemwas developed using the programming language of the PHP (Hypertext Preprocessor) and MySQL as the database. The information system of laboratory based-computerization was useful for managing and monitoring the activities in Laboratory of Mechanical Engineering in form of incoming or outgoing the data of goods and material. While, the design of warehouse layout of facilities in laboratory of Mechanical Engineering, University of Riau used the 5S method, was produced clean and neatly arranged of the equipments and tools.Keywords : Warehouse management, 5S Method, PHP, MySQL, Information System.

Analisis Kerusakan Mesin CNC Lathe Dengan Metode Failure Mode And Effect Analysis (FMEA) (Studi Kasus Mesin CNC Lathe Fanuc Di Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau) Risyandi, Danul; Susilawati, Anita; Syafri, Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This study aims to analyze the damage that occurs on the machine using the FMEA method (case study: CNC Lathe Fanuc machine at the Laboratory of Department of Mechanical Engineering Faculty of Engineering, University of Riau). The research method uses the Fault Tree Analysis (FTA) approach by identified an error tree to search for the roots of machine malfunction. Continue using FMEA method in the form of assigning weight rating of Saverity (S), Occurance (O), Detection (D) and Risk Priority Number (RPN) to become a proposed improvement to CNC Lathe machine. The results of the type of damage (Failure Mode) machine was the tool replacement system (movement M 06) failed / not completed. Causes of damage ( failure cause) machine were the motor components faults incorrecly writing program to command tool and faults of components of the automatic tool changger. The proposed improvements include checking and providing oil / lubricant on motor and tool changger components especially moving and rubbing components, repairing and replacing the motor and automatic tool changger components if needed, repairing the program deadlock, removing the M06 commands on the program, repair and replace the memory card if needed. Therefore, it is necessary to perform checks / maintenance periodically, not only when experiencing problems only.Keywords: Lathe CNC Machine, FMEA, FTA, RPN, Proposed improvemet

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