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All Journal Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Pengabdian UntukMu NegeRI International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) PROCEEDING OF INTERNATIONAL CONFERENCE ON BUSINESS MANAGEMENT AND ACCOUNTING

Dodi Sofyan Arief, Dodi Sofyan

Universitas Riau

Author-ID : 3206893

Religion Aerospace Engineering Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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Analisa Performance Mesin Screw Press Menggunakan Metoda Overall Equipment Effectiveness (Studi Kasus: PTPN V Sei Pagar) Fauzul Hamdi Siregar; Anita Susilawati; Dodi Sofyan Arief
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The Overall Equipment Effectiveness (OEE) is one of the methods of maintenance activities, which aim to preserve and maintain the quality of the equipment or machinery. The OEE in maintenance activities may include measuring the level of availability, level of performance, and level of quality of the machines to produce a product. This research aims to analyze the performance of machine using OEE method (case study: the machine screw press in PTPN V Sei Pagar). The research was carried out on screw press machine in the PTPN V Sei Pagar. The company is engaged in palm oil processing industry that produces crude palm oil and kernel. The research method used the Total Productive Maintenance (TPM) approach to analyze the value of OEE based on the Statistic Software of SPSS 21. Analysis result over a period of eight weeks of OEE values were obtained on a screw press,which was 47.3%. The OEE values of the screw press machine were still below the standard of OEE’s world class, which was over 85.4%. Based on analyzing of the value of six big losses that was known as the affecting factor of the low value of the OEE on the screw press machine, that was found the very significant losses on the set up and adjustment losses. The value of OEE on the set up and adjustment losses of the screw press was 45.6%. Using cause and effect diagram was obtained the root causes of the low value of OEE due to very high the schedule of stand by the machine. By using SPSS 21 software proved that each of six big losses factors have a relationship and affect the value of OEE with significant value under 0.05.Keywords : OEE, Six Big Losses, Cause and Effect Diagram, SPSS 21

Perancangan Alat Pengukur Massa Pada Automatic Machine Measuring Of Mass And Dimension Dengan Metode Dfma Aulia Rahman; Dodi Sofyan Arief
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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Design of automatic machine measuring of mass and dimension is the initial activity of a series of product manufacturing processes. Design is an important part of producing a complete manufacturing product. The manufacturing process of this machine refers to the Design for Manufacture and Assembly (DFMA) method. DFMA method is a method that provides efficient steps in the manufacturing process. Design for Manufacture (DFM) is one of the manufacturing planning systems that will analyze designs that will be used from several planned design alternatives, until the third design alternative is chosen as the final design for manufacturing. Design for Assembly (DFA) is one of the assembly planning systems that will analyze the design of components and products as a whole. The DFA analysis will produce assembly efficiency values. The value of assembly efficiency from the prototype design in theory is 5.45% with assembly time of 715.05 seconds and the value of assembly efficiency from the prototype in practice is 5.76% with assembly time of 676.54 seconds. Keyword : design, automatic measuring machine, DFM

Perancangan Alat Pengukur Volume Automatic Machine Measuring Of Mass And Dimentionuntuk Pengiriman Barang Dengan Metode Dfma Syahru ramadonal; Dodi Sofyan Arief
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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Automatic machine measuring of mass and dimension is a machine that consists of several components that function as retrieval of information in the form of mass (kg) and dimensions (m3) of an object in the form of a regular or irregular (random). The working principle of Automatic machine measuring of mass and dimension is that the camera will take pictures of the light given by the sensor beam (line lacer) which moves together with the camera and by using the triangulation method [7] of the laser and camera, then a broad measurement image can be obtained. from 2D images that will be processed using computer algorithms to get 3D image results to determine the volume of objects,Design forManufacturing assembly is one of systems analysis to assembling components, simultaneously, throughout the products from beginning of process design. As result, obstacles to get assembly could be minimalizing before components production. DFMA analysis will be obtaining the value of efficiency on assembly. Through this way, the efficiency value of machine prototype to separating waste, both, ferromagnetic and non-ferromagnetic materials can be achieved. Furthermore, efficiency value on assembly of prototype design is 2.27% at 3033.75 seconds theoretically. The assembly efficiency value of prototype after production and assembling process on actual condition is 1.67% at 3676,473 seconds. The distinction from these efficiency values is caused by difficulty on assembly of the Arduino Acrylic base and the installation of sub-assembly body cover. As consequences, the time to get assembly will take more time on actual condition rather than theoretically. Keywords:triangulation method,laser,camera,volume, Designing, Design For Manufacturing And Assembly (DFMA), assembly efficiency

Automatic Task Machine (ATM) Design for Logistic Package by Method Analytical Hierarchy Process (AHP) Through Approach the Design for Manufacturing (DFM) Deni Pranata; Dodi Sofyan Arief
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 65 No 1 (2021): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

The Automatic Task Machine (ATM) machine for logistics packages is a machine vision to measure the dimensions and other components in form load cell, which serves to measure the mass of an object. This machine design was development the addition of components such as insert card, screens, navigation buttons, receipt printers, automatic package doors and a storage room delivery mechanism. Method of Analytical Hierarchy Process (AHP) was chosen to determine the ATM design for the optimal logistics package for the best alternative decision. The questionnaires were made to get priority consumer needs, which it used for the initial design. The consumer needs questionnaire was based on several indicators, namely: ergonomics, measurement of dimensions and weight, package transmission and package storage. The next stage was selecting the optimal design using AHP, which involves Expert based on the indicator of a product. The highest indicator value obtained for the logistics package ATM is "dimension and weight" with a value of 5.22 and the optimal design choice was "alternative 3". The optimal design choice was analyzed using the Design for Manufacturing (DFM) approach to consider the cost of manufacturing product, which aims to minimize the cost of making ATMs for logistics packages.

Calibration of Dial Indicator Using Calibration Tester with JIS B 7503 Standard Dodi Sofyan Arief; Amri Pahlevi; Agus Surya Permana
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 65 No 2 (2021): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

The measurement process is the most important part of the production process in the industrial world. Obtaining good measurement results can not be separated from using measuring instruments that are always maintained. Subsequence, the maintenance of calibration procedures must be carried out periodically based on a predetermined time limit. The calibration process is an activity to compare standard quantities between measuring instruments and testers that are in accordance with the measuring instrument and carried out periodically. The implementation of the calibration process often has generates an uneven value where this value is better known as the uncertainty value. This research objective is to determine the uncertainty value of the measuring instrument of a dial indicator using the JIS B 7503 Standard. The calibration can control the quality of the equipment used, and can show whether the tool is feasible or not to be used.

Calibration Of Vickers Hardness Test PT.Tenaris Seamless Pipe Indonesia Jaya Cilegon Using Standar Blok Dodi Sofyan Arief; Muftil Badri; M. Dalil; Agus Reforiandi; Agus Surya Permana
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 64 No 3 (2020): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

A calibration is an activity to determine the conventional validity of the appointment value of measuring instruments and measuring materials by comparing them to standard measurements that are traceable to national and international standards for measurement units and or international and certified reference materials. The calibration is generally a process of adjusting the output or indication of a measurement device to match the magnitude of the standard used in certain accuracy. The purpose of this paper is to find out the vickers hardness test calibration whether the machine running normally or there is a problem with the device. A case study was conducted in PT. Tenaris SPIJ, Cilegon, Indonesia. A vickers hardness testing in the case study has its own reference standard, namely ISO 6507-2: 2018 Metal material - Hardness Test Verification and Calibration of the test machine. The vickers hardness test equipment is a machine to conduct tests using a diamond pyramid with a plane angle of 136°, by means of an emphasis by an indentor that results in a trace or indentation on the surface of the test object. The vickers hardness testing is abbreviated as HV or HVN and also known as Diamond Pyramid Hardness Test (DPH). Result of calibration in the case study was found the repeatability value on vickers hardness testing machine of 32 HV 10 and the error value of ±3%.

Mechanism and control system of Damping Diverters in Heat Recovery Steam Generator (HRSG) at PT. Indonesia Power, UPJP Priok, DKI Jakarta, Indonesia Athiyyah Rieke Hisana; Dodi Sofyan Arief; Gamal Fiqih Handonowarih
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 63 No 2 (2019): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Heat Recovery Steam Generator (HRSG) is one of the components in PLTGU, HRSG used the remaining heat energy to circulate a gas turbine unit to heat the water and convert to steam, and then activate it to move the steam turbine. Water heating in HRSG is done by utilizing exhaust gas as much as possible from the gas turbine. In HRSG there is one component that is a diverter damper that functions as a diverter or regulates the amount of residual combustion gas flow from the gas turbine generator step into HRSG.

Effects of Oil Palm Trunk (OPT), Peat and Coconut Shell Charcoal on the Characteristics of Biomass Pellet Muftil Badri; Dodi Sofyan Arief; Iwan Kurniawan
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 66 No 1 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

This paper presents an experimental study of mass percentage and pretreatment effect of oil palm trunk (OPT), and peat charcoal on energy parameters of biomass pellet. The density, calorific value, moisture and ash content of OPT biomass pellet has been developed and the experimental conditions in obtaining the energy parameters of OPT biomass pellet are discussed. The physical pretreatment was carried out by finely chopping OPT, peat charcoal, and adhesive and mixed in a predetermined composition. The manufacturing process of OPT biomass pellet was performed, the mass percentage of OPT and peat charcoal were varied. Type of test was performed on biomass pellet include density, calorific value, moisture and ash content. The influences of various parameters on the characteristics of biomass pellet were considered. The increase of mass percentage and pretreatment of peat charcoal has an effect on increasing the density, decreasing the calorific value of OPT biomass pellet, increasing the moisture content, and increasing the ash content of OPT biomass pellet. The mixture of coconut shell charcoal decreasing the density, increasing the calorific value, decreasing the moisture content, and decreasing the ash content of OPT biomass pellet. Biomass pellets from a mixture of OPT and coconut shell charcoal has a calorific value of 6649 cal/g, where the density was 1.15 g/cm3, the moisture content of 5.6%, and the ash content of 8.9%.

Design of the Vertical Roundness Tester Machine Using the AHP Method (Analytical Hierarchy Process) Through the DFM Approach (Design for Manufacturing) Agus Reforiandi; Dodi Sofyan Arief
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 65 No 2 (2021): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

The Roundness Tester Machine is a tool used to take measurements that are shown to check the Roundness of an object or to find out whether an object is really round or not when viewed carefully using a measuring instrument. DFM (Design for Manufacturing) is a method for reducing production costs by estimating production costs through reducing component costs, assembly costs, and other production supporting costs based on design submission data without reducing product quality. AHP (Analytical Hierarchy Process) method was chosen as a method to determine the optimal Vertical Roundness Tester Machine design based on a questionnaire given to the expert, to choose the best alternative decision. The questionnaire was created to get priority customer needs which was then used for the initial design. The next stage is selecting the optimal design using AHP which involves experts based on indicators of a product. The highest indicator value obtained on the Vertical Roundness Tester Machine is the accuracy indicator with a value of 48.52%. Then in choosing the optimal design in the DFM analysis, namely in alternative 3, where alternative 3 is the design with the lowest cost so as to minimize the cost of making a Vertical Roundness Tester Machine. The manufacturing cost for alternative design 3 is Rp. 4,173,000.

Making roundness measurement applications and control systems on the Roundness Tester Machine Dodi Sofyan Arief; Eko Jadmiko; Adhy Prayitno; Muftil Badri; M. Dalil
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 63 No 3 (2019): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Dial indicator is a comparison device usually used in industrial activities, especially in production. To make measurements at this time must be supported by technology that can facilitate operators when using it and when analyzing measurement results. Involving the programme and microcontroller are a solution to developing in roundness measurement, and then the results can be more accurate or thorough between the readable values read from the measuring instrument with the actual value of varying the amount of data. Roundness application is a program that can input measurement data automatically and can do calculations directly. Then, it can display a reference circle, a table that calculates the values of X, Y, R, X’, Y’, R’, Roundness Deviation, Run out Concentricity or a shift in the center point and also the center point shift or Theta. In measuring roundness, the test object is used the Standard Mandrel which has been certified by PT. Global Quality Indonesia, by determining three points or positions, namely in the first position the amount of data is 180, in the second position the amount of data is 90 and in the third position, the amount of data is 60 with a rotating speed of 15 mm/s. The results of the reference circle can be seen in each calculation in each position, in the second position the roundness deviation values are approaching of the Mandrel.

Co-Authors Abdul Khair Junaidi Achmad Tavip Junaedi Adhy Prayitno Adhy Prayitno Adhy Prayitno, Adhy Afrizal, Efi Agus Reforiandi Agus Reforiandi Agus Surya Permana Agus Surya Permana Akbar, Mustafa Amani, Nahrul Amir Hamzah Amri Pahlevi Amries Rusli Tanjung Andri Andri Anita Susilawati Anjananda Vitodi Asral, Asral Athiyyah Rieke Hisana Athiyyah Rieke Hisana Atmaja, Hikmah Aulia Rahman Awaludin Martin Ayunita, Dyna Barib Bramawira Bayu Wiguna Brilliant Yosef Pandapotan Cecilia, Cecilia Choir, Mustofa Dalil, M Dalil, M. Dalil, M. Darmansyah Darmansyah Deni Pranata Dian Haryanto Doni Saputra Dyna Ayunita Dyon Shaputra Mendofa Eko Jadmiko Eko Jadmiko Elgi Oki Andeska Erizal Hamdi Ervan Kurniawan Fauzul Hamdi Siregar Fikri Aulia Firdaus M Fitra, Edy Galuh Leonardo Sihombing Gamal Fiqih Handonowarih Gusrio Tendra Hendri Yanto I Gusti Bagus Wiksuana Ida Ayu Putu Sri Widnyani Ihsan, Rizki Al Ikhsan Rahman Husein Ilyandi, Rifki Imnadir Imnadir Indro Parma Iskandar, Anwar Iwan Kurniawan Jahrizal Johanes, Erik Sitio Junaidi, Abd Khair Keno Widodo Koto, Jaswar Koto, Jaswar Kurnia, Andry M. Dalil M. Dalil MERRY SISKA Mhd Irvan Irwana Midriem Mirdanies Midriem Mirdanies Minarni Minarni Minarni Shiddiq, Minarni Mintarto Mintarto Muflihana, Afdila Muflihana, Afdila Muftil Badri Muhammad Anjar Arrohman Muhammad Arif Munirah, M. Musa, Sulaiman Mustafa Akbar Nicholas Renaldo Novry Harryadi Okazar, Okazar Putri Nawangsari Rahmat Hidayat Rahmat, Ridho Zarli Roni Salambue Saputra, Rachman Sarmaini Fridawaty SATRIYAS ILYAS Sherif, Jamaluddin Md Shodikin, Shodikin Sihombing, Galuh Leonardo Sihotang, Samsul Bahri Simaskot, Johar Sinta Afria Ningsih Sitio, Erik Johanes Solih, Aji Mahmud Sugianto, Irwan Suhardjo Sukemi Indra Saputra Sukma Aditya Syafri, Syafri Syahru ramadonal Tekad Indra Pradana Abidin, Tekad Indra Pradana Toni Darji Veronica, Kristy Wahid, Nabila Wilda Susanti Zulfebri Zulfebri

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