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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Rekayasa Mesin Jurnal Pengabdian UntukMu NegeRI Jurnal Pemberdayaan Masyarakat Madani (JPMM) Dinamisia: Jurnal Pengabdian Kepada Masyarakat Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Proksima BATOBO: Jurnal Pengabdian Kepada Masyarakat Prosiding SNTTM
Anita Susilawati
Universitas Riau
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Other

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Optimasi Jalan Pahat Dan Analisis Biaya Produksi Proses Pemesinan CNC Lathe Pembuatan Piston Master Cylinder Rem Sepeda Motor Yamaha Menggunakan CAM Atmadio, Nico; Susilawati, Anita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tool path optimation on CNC lathe machining can set up every movement of tools move optimally to minimize processing time of a workpiece. This research purpose is simulation of tool path the CNC lathe machining for the manufacture of piston master cylinder brake of Yamaha Motorcycle by using CAD/CAM software. First design was made geometry of piston master cylinder using Computer Aided Design (CAD). Tool path was designed into 3 variations of scheme with absolute and increment of programming system using Mastercam v9. Then it was simulated to get the most optimum processing time. Simulation result was obtained longitudinal scheme time for absolute coordinate system 14 minutes 45 seconds and increment coordinate system 14 minutes 5 seconds, surface to parallel scheme for absolute coordinate system 14 minutes 30 seconds and increment coordinate system 13 minutes 48 seconds, diametrical scheme for absolute coordinate system 17 minutes 39 seconds and increment coordinate system 17 minutes 12 Seconds. The optimal processing time for making the piston master cylinder brake of Yamaha Motorcycle used the toll path of surface to parallel increment coordinate system with production cost Rp. 6.912,81,-/pcs.Keywords : Piston master cylinder, Tool Path, Absolut, Inkremen.
Development of Rice Threshing Machine Based Quality Function Deployment Approach – A Case Study Susilawati, Anita; Roni, Guido; Yohanes, Yohanes; Anuar, Kaspul; Fatiya, Fatiya
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 68 No 2 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v68i2.373

Abstract

Threshing rice is an important stage in agriculture, especially in rice production. The aim of this paper is to develop designs for multi-functional rice threshing machines using the Quality Function Deployment (QFD) approach. The case study was conducted on farmers in a village in Indonesia. Based on observations and survey results conducted with farmers, there was a problem with the rice threshing machine being used less than optimally, so that the time and cost of harvesting became greater. The research was carried out by collecting data by distributing questionnaires directly to 15 respondents. In this research, validity and reliability testing was carried out. The result was in the form of design development, the weight of the rice threshing machine was obtained at 35 kg, which was lighter than previously machine used by farmers. More, the development for new one was resistant to rust and has a fan that functions to separate the rice grains from the grain. Priority of technical characteristics based on weight and dual function of the tool. The dual function of the tool was to thresh and separate the rice with sides and empty ones. Furthermore, the development of rice threshing machine can tailored to the consumers needs.
Analysis of Cut Size Paper Cutting Machine Performance Using Total Productive Maintenance Concept (Case Study: PT. RST) Mustafa, Rolandi; Susilawati, Anita; Mulyadi, Ismet Hari
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 68 No 2 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v68i2.365

Abstract

PT. RST, a leading paper factory in Indonesia, prioritizes timely production by optimizing productivity, efficiency, and paper quality. This study assesses the reliability of the Cut Size (CS) paper cutting machine, which is enhanced through the implementation of Total Productive Maintenance (TPM) as a management philosophy to ensure high-efficiency operations. To evaluate machine performance, Overall Equipment Effectiveness (OEE) measurement is used. From data collected from January to September 2023, an analysis is conducted to improve the performance of the CS machine, which has not met its set target. The average OEE value of 70.9% falls short of the target of 72%. This research aims to improve the performance of the CS machine through the TPM approach, focusing on the Focused Maintenance pillar. Using tools such as Pareto diagram, why-why analysis, fishbone diagram, and the 5W1H method, several sources of problems causing the decrease in OEE value will be identified and addressed.
Design and Development of Quadcopter’s Frame Anuar, Kaspul; Susilawati, Anita; Syafri, Syafri; Fatra, Warman; Huda, Feblil; Nazaruddin, Nazaruddin; Cupu, Dedi Rosa Putra
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 68 No 1 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v68i1.360

Abstract

The purpose of this research is to obtain a design and prototype of quadcopter’s frame, which be developed further as a quadcopter that capable of carrying payload of 1.5 kg with flight time of more than 20 minutes. The design begins with estimating the values of Maximum Take-Off Weight (MTOW), required thrust, propeller dimensions, and wheelbase dimensions of the quadcopter. The results show the MTOW of the quadcopter was 5 kg, with each motor requiring of 2.5 kg of thrust per arm. The wheelbase dimension was 790 mm, and the propeller diameter of 17 inches. A wheelbase dimension was utilized to develop three conceptual frame designs for the quadcopter. The three conceptual designs were selected using a decision matrix table. The selected design was calculated for its structural strength by applying a load of 2.5 kg on each motor mounting. The results show the maximum stress value of 21.17 MPa, the maximum deflection of 3.5 mm, and safety factor of 22.44. Then, the prototype of quadcopter’s frame was manufactured. Therefore, the producing of prototype was measured the mass and deflection. Based on the measurements conducted, the quadcopter frame has an actual mass of 595 grams and a maximum deflection of 3.7 mm. The actual deflection value and the actual mass are close to the deflection and mass obtained from the calculation.
Optimizing Steam to Electricity Ratio in Crude Palm Oil Refinery Captive Power Plant: A Six Sigma-DMAIC Capability Assessment Anggriawan, Akbar; Susilawati, Anita; Mainil, Rahmat Iman
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 3 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v69i3.552

Abstract

This study applies the Six Sigma-DMAIC (Define, Measure, Analyze, Improve, Control) methodology combined with process capability analysis to enhance energy efficiency, specifically by reducing the steam to electricity ratio of a steam turbine. Initial measurements indicated a steam-to-electricity ratio of 4.5 to 5.34 kg/kWh, highlighting high steam consumption and poor efficiency. The process was unstable, with Cp and Cpk values of 0.30 and -0.16, and a defect rate exceeding 560,000 DPMO. Using an Ishikawa diagram, a vacuum leak in the steam turbine condenser was identified as the main cause of excessive steam consumption. After repairing the condenser, monitoring showed significant improvements, with the steam to electricity ratio reducing to 3.0 – 4.0 kg/kWh. Process capability improved, with Cp increasing to 1.39, Cpk to 1.02, and Z-bench to 3.05 (equivalent to 1,143 DPMO). The Anderson-Darling test confirmed a normal distribution (p-value = 0.464). Six Sigma-DMAIC effectively optimized steam turbine performance.
Comparative Analysis of Real-time and Conventional Overall Equipment Effectiveness Applications in Manufacturing Industry Susilawati, Anita; Yohanes, Yohanes; Putri, Sunny Ineza; Prasetyo, Brian Agung Cahyo; Saputri, Anggraini Dwi; Ihsan, Yaser
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 3 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v69i3.570

Abstract

Overall Equipment Effectiveness (OEE) is a comprehensive measure to identify the level of productivity and performance of machines/equipments. Conventional approaches to OEE data processing, such as using Microsoft Excel, have limitations. Consequently, the data processing process becomes less efficient and prone to human error. This study aims to examine the application of OEE in the Manufacturing Industry, measurable performance gaps between conventional and real-time approaches. The methodology used in this study was based on a synthetic literature review to evaluate the effectiveness of both OEE approaches based on existing studies. The transition of OEE from mere calculations to dynamic, real-time, and integrated systems is a direct response to the increasing complexity and competitiveness of the modern manufacturing environment. This study can be used to identify areas for future development and as a reference for further research to provide a guide to OEE practitioners in implementing improvements.
Implementasi analytic hierarchy process dalam penentuan bobot key performance indicators pada pembangkit listrik turbin uap Anggriawan, Akbar; Susilawati, Anita; Arief, Dodi Sofyan; Nazaruddin
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/6yw8w905

Abstract

Optimalisasi Key Performance Indicators (KPI) pada pembangkit listrik turbin uap sangat penting untuk meningkatkan efisiensi operasional dalam industry pengolahan kelapa sawit. Penelitian ini menerapkan metode Analytic Hieararchy Process (AHP) untuk menentukan bobot relative setiap KPI, sehingga memfasilitasi pengambilan keputusan berbasis data untuk peningkatan kinerja. Empat KPI krusial dievaluasi melalui perbandingan berpasangan berdasarkan keahlian para pakar. Hasil penelitian menunjukkan bahwa power output (47,16%) merupakan KPI paling signifikan, diikuti oleh availability factor (38,58%), steam consumption (9,69%), dan capacity factor (4,58%). Nilai consistency ratio (CR) dari seluruh penilaian pakar berada di bawah 0,10, yang menunjukan bahwa hasil AHP tersebut dapat diandalkan.
Analysis of co-firing palm oil waste for the economic and emission performance of PLTU in Riau Aulia Ramadhan; Anita Susilawati; Asral; Dodi Sofyan Arief; Dinni Agustina
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/rkcrwn20

Abstract

This study evaluates the co-firing of palm oil industry waste biomass, specifically Palm Kernel Shell (PKS) and Empty Fruit Bunch (EFB) pellets, in coal-fired power plants (PLTU) in Riau, Indonesia, to support a sustainable energy transition. Empirical tests were conducted at PLTU Tenayan and Tembilahan, using biomass substitution rates of 5% and 50%, respectively. Key performance indicators, including Specific Fuel Consumption (SFC), Net Plant Heat Rate (NPHR), production cost, and exhaust emissions (SO₂ and NOₓ), were analyzed. Results show that 5% PKS co-firing at PLTU Tenayan reduced SFC from 0.871 to 0.856 kg/kWh and NPHR from 4,187 to 4,116 kCal/kWh, while 50% PKS co-firing at PLTU Tembilahan decreased SFC from 1.171 to 0.785 kg/kWh and NPHR from 5,312 to 3,625 kCal/kWh. Economically, PKS co-firing resulted in cost savings of up to Rp223.58/kWh. Emission measurements revealed SO₂ reductions up to 27.8% at PLTU Tenayan and 34% at PLTU Tembilahan (EFB scenario), with NOₓ emissions remaining stable or decreasing by up to 13%. Conversely, EFB pellet co-firing increased fuel consumption and production costs due to higher fuel prices and operational challenges. The study confirms that PKS co-firing is a viable and effective approach to enhance power plant efficiency, reduce emissions, and lower costs in palm oil-producing regions. Limitations include short test durations and limited plant sites; therefore, long-term monitoring is recommended to assess boiler integrity, operational stability, and emission performance for sustainable large-scale implementation. This research provides critical technical, economic, and environmental insights for advancing biomass co-firing in commercial coal power plants.
Co-Authors Achmad Noerkhaerin Putra Agus Sutanto Agustina, Dinni Andi Putra Anggriawan, Akbar Anuar, Kaspul Aria, Dedek Asral Atmadio, Nico Aulia Ramadhan Bambang Nofri Barib Bramawira Calvin Aidil Febri Cupu, Dedi Rosa Putra Dalil, M. Dedy Masnur, Dedy Dhimas Budhi Pratama Dodi Sofyan Arief, Dodi Sofyan Efrizal Saputra Eka Setia Wahyudi Ervan Kurniawan Evander Simanjuntak Fatiya, Fatiya Fauzul Hamdi Siregar Feblil Huda Heri Saputra Heri Siswanto Herisiswanto Herisiswanto Herisiswanto Herisiswanto Ihsan, Yaser Iskandar, Anwar Ismet Hari Mulyadi Keno Widodo Muftil Badri Muhammad Ardi Muhammad Ikhlas Muhammad Nur Iksan Muhammad Razak Tuara MUHAMMAD REZA FAHLEVI Muhammad Sholihin Muhammed Sarwar Mustafa, Rolandi N. Nazaruddin Nazaruddin Nico Atmadio Novaldi Andryoga Novri Yunus Nur Iksan Agusti Nurjaman, Jajang Prasetyo, Brian Agung Cahyo Putra, Ivan Fadillah Rahmat Iman Mainil Ramadhan, Aulia Ramadhani, Hafiz Randa, Nofri Reihan Fahrezi Ridwan Abdurrahman Rio Agus Saputra Risyandi, Danul Riyandi Al Isral.Z Romy Romy Romy Romy Romy Roni, Guido Rudiansyah Rudiansyah Samuel Putra Tambunan Saputra, Efrizal Saputri, Anggraini Dwi Selera Sitepu Simaskot, Johar Siregar, Erikson Sukemi Indra Saputra Sunny Ineza Putri Syafri Syafri Syafri Syafri, Syafri Tan, John Toni Darji Toni Darji Warman Fatra, Warman Wasilah Yohanes Yohanes Yohanes Yohanes Yohanes Yohanes Yohanes Yunus Pardosi