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Indonesian Journal of Innovation Studies
Published by Universitas Muhammadiyah Sidoarjo
ISSN : -     EISSN : 25989936     DOI : https://doi.org/10.21070/ijins.v17i
Core Subject : Science, Education, Social, Engineering,
Computer Science & IT Education Engineering Law, Crime, Criminology & Criminal Justice
Indonesian Journal of Innovation Studies (IJINS) is a peer-reviewed journal published by Universitas Muhammadiyah Sidoarjo four times a year. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.This journal aims is to provide a place for academics and practitioners to publish original research and review articles. The articles basically contains any topics concerning new innovation on all aspects. IJINS is available in online version. Language used in this journal is Indonesia or English.
Arjuna Subject : Umum - Umum
Articles 1,027 Documents
 99   100   101   102   103 
Integrated FMEA FTA HOR Reduces Production Defect Risk: Penerapan EOQ Mengurangi Biaya Persediaan PAC dalam Pengolahan Air Maulidiyah, Indri; Sari W., Indah Apriliana
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2121

Abstract

General Background Product quality and risk management are essential aspects of maintaining efficient production systems. Specific Background Many industries experience recurring defects due to inadequate identification and control of potential failure modes. Knowledge Gap However, the integration of multiple risk analysis methods to systematically address these issues remains limited. Aims This study aims to analyze and mitigate production risks using Failure Mode and Effect Analysis (FMEA), Fault Tree Analysis (FTA), and House of Risk (HOR). Results The findings identify critical failure modes with high risk priority values and reveal root causes through FTA. The HOR method prioritizes mitigation strategies, focusing on the most significant risk agents. Novelty This study integrates three analytical approaches to provide a comprehensive framework for quality improvement and risk mitigation. Implications The results offer practical guidance for reducing defects and improving decision-making in production risk management. Keywords: Failure Mode Analysis, Fault Tree Analysis, House Of Risk, Quality Control, Risk Mitigation Key Findings Highlights Critical failure sources identified through structured evaluation Root cause mapping clarifies defect occurrence pathways Priority-based actions guide targeted improvement strategies
Line Balancing Optimization in Shoe Finishing Production Systems: Optimasi Keseimbangan Jalur dalam Sistem Produksi Penyelesaian Sepatu Cahyaningurm, Rista Dwi; Sukmono, Tedjo
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2122

Abstract

General Background: Manufacturing systems often face inefficiencies due to unbalanced workloads across workstations, particularly in labor-intensive industries such as shoe production. Specific Background: In the finishing process of a shoe manufacturing company, production targets were not achieved due to bottlenecks in the creaming brushing process, where operation time exceeded the cycle time of 1.215 minutes. Knowledge Gap: Previous applications of line balancing methods have not sufficiently addressed workload imbalance in finishing lines with complex task distributions. Aims: This study aims to optimize the production line by applying the Largest Candidate Rule (LCR) and Region Approach (RA) methods to improve efficiency and workload distribution. Results: The findings show that both methods significantly improve performance, increasing line efficiency to 81.73%, reducing balance delay to 18.27%, and decreasing idle time to 1.998 minutes, while reducing the number of workstations from 15 to 9. Novelty: The study provides a comparative application of LCR and RA methods within a real shoe production finishing line and identifies layout considerations as a determining factor in method selection. Implications: The results suggest that implementing appropriate line balancing methods can support production target achievement and improve operational efficiency in manufacturing systems. Keywords: Line Balancing, Production Systems, Largest Candidate Rule, Region Approach, Workstation Optimization Key Findings Highlights Workstation reduction achieved through task redistribution across production stages Idle time minimized alongside improved workload allocation consistency Layout-based selection supports practical implementation of balancing methods
Quick Shifter Prototype for Manual Motorcycle Gear Transition: Prototipe Quick Shifter untuk Pergantian Gigi Motor Manual Qodrinas, Alvi; Wicaksono, Arief
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2123

Abstract

General Background: Motorcycles are widely used transportation tools, and manual transmission systems require multiple steps during gear shifting, which can be difficult for novice riders. Specific Background: Conventional gear shifting involves reducing throttle, pulling the clutch, shifting gears, and reopening the throttle, which may lead to delays or engine stalling. Knowledge Gap: Existing manual systems still rely heavily on rider skill, with limited integration of automated electronic assistance for gear shifting. Aims: This study aims to design and develop a quick shifter prototype to simplify and accelerate gear shifting in manual motorcycles. Results: The prototype utilizes a push button switch as a trigger, an Arduino Nano as a controller, and a relay system to momentarily cut ignition for 0.1 seconds, allowing smooth gear transition. Testing results show that gear shifting was successfully performed across all gears from 1 to 6 within RPM ranges of 1,000–12,000. Novelty: The study presents a prototype-based integration of microcontroller and relay systems to support clutchless upshifting in manual motorcycles. Implications: The prototype demonstrates a practical approach to simplifying gear shifting operations and improving user convenience in motorcycle operation. Keywords: Motorcycle, Quick Shifter, Arduino Nano, Gear Shifting, Prototype System Key Findings Highlights Successful operation across full gear range under varying engine speeds Ignition cut mechanism enables seamless transition without clutch use Integrated hardware and software configuration supports system functionality
Welding Current Variation Determines Tensile Strength in MIG Joints: Variasi Arus Las Menentukan Kekuatan Tarik pada Sambungan MIG Wijaya, Achmad Surya; Mulyadi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2124

Abstract

General Background: Welding is a critical process in manufacturing that determines the strength and reliability of material joints. Specific Background: Metal Inert Gas (MIG) welding is widely used due to its efficiency, but variations in welding current can significantly affect the mechanical properties of the welded material. Knowledge Gap: The optimal current variation for achieving maximum tensile strength in MIG welding is not always clearly defined for specific materials such as ST 37. Aims: This study aims to analyze the effect of welding current variation on the tensile strength of ST 37 material using the MIG welding method. Results: The findings indicate that different current levels produce varying tensile strengths, with one current variation resulting in the highest tensile strength compared to others. Novelty: The study provides experimental evidence of the relationship between welding current variation and tensile strength in ST 37 material using controlled parameter conditions. Implications: The results can be used as a reference for selecting appropriate welding parameters to achieve stronger and more reliable welded joints in industrial applications. Keywords: Welding, MIG Process, Tensile Strength, Current Variation, ST37 Steel Key Findings Highlights Highest strength observed at specific electrical input setting Mechanical performance varies across tested parameter levels Experimental comparison confirms parameter sensitivity in joining process
Optimal Composition Ratio Achieves Maximum Compressive Strength in Sandwich Panels: Rasio Komposisi Optimal Menghasilkan Kekuatan Tekan Maksimal pada Panel Sandwich Hardiyanto, Dimas; Tjahjanti, Prantasi Harmi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2125

Abstract

General Background: Sandwich panels are widely used in construction due to their lightweight structure and functional efficiency, making material strength a critical factor in performance. Specific Background: Defects such as bubbles and uneven surfaces in sandwich panels often reduce product quality and are related to bonding issues between layers. Knowledge Gap: Limited studies specifically examine how variations in polyol and isocyanate composition affect compressive strength in repaired sandwich panels. Aims: This study aims to analyze the effect of composition ratios of polyol and isocyanate on the compressive strength of sandwich panels. Results: Experimental testing shows that the 70:30 composition produces the highest compressive strength of 1.13 MPa, compared to 0.513 MPa for 50:50 and 0.696 MPa for 60:40. Novelty: The study provides experimental evidence of optimal composition ratio for improving bonding performance in sandwich panel repair. Implications: The findings offer a reference for selecting material composition to improve the strength and quality of sandwich panels in industrial applications. Keywords: Sandwich Panel, Polyurethane, Isocyanate, Compressive Strength, Material Composition Key Findings Highlights Highest strength achieved at specific material proportion Measured values vary significantly across tested ratios Experimental data confirm sensitivity to composition changes
Dough Mixer Machine Design Increases Cracker Production Capacity: Desain Mesin Pengaduk Adonan Meningkatkan Kapasitas Produksi Kerupuk Saputra, Muhammad Anggie Cahya; Mulyadi; Fahruddin, A’rasy; Widodo, Edi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2126

Abstract

General Background: Productivity and consistency are essential factors in food processing industries, particularly in small and medium enterprises. Specific Background: Manual dough mixing in cracker production often results in low efficiency and inconsistent product quality. Knowledge Gap: Limited studies focus on practical machine design that addresses both productivity and consistency in small-scale cracker production. Aims: This study aims to design and develop a dough mixer machine to improve production capacity and mixing consistency. Results: The developed machine demonstrates improved mixing performance, increased production capacity, and more uniform dough compared to manual processes. Novelty: The study presents a practical machine design tailored for small-scale industries with specific capacity considerations. Implications: The results provide a reference for implementing appropriate technology to support productivity improvement in small-scale food production. Keywords: Dough Mixer, Machine Design, Productivity, Small Industry, Food Processing Key Findings Highlights Mechanical system enables higher output compared to manual mixing Process uniformity improves through controlled rotation mechanism Design supports small-scale production requirements
Manufacturing Analysis of Banana Slicer Machine Capacity 59 kg Hour: Analisis Produksi Mesin Pengiris Pisang dengan Kapasitas 59 kg per Jam Hanani, Nabil Azka; Mulyadi; Widodo, Edi; Fahruddin, A’rasy
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2127

Abstract

General Background: Banana processing is an important agro-industrial activity in Indonesia, particularly for producing banana chips with consistent quality. Specific Background: Conventional manual slicing methods are inefficient and result in inconsistent thickness, limiting productivity and product quality. Knowledge Gap: Previous approaches have not fully integrated manufacturing process analysis with time, cost, and performance evaluation in a single machine design. Aims: This study aims to analyze the manufacturing process of a banana slicer machine with a capacity of 59 kg/hour, including time estimation, cost calculation, and performance testing. Results: The manufacturing process consists of cutting, drilling, welding, turning, and milling, resulting in a total production time of 29.63 hours and a total cost of Rp 5,058,262. Performance testing shows that the use of three blades produces the most consistent slice thickness of 2 mm with good quality output. Novelty: The study integrates detailed manufacturing time analysis, cost estimation, and performance evaluation within a single machine development framework. Implications: The findings provide practical guidance for improving production efficiency and product quality in small to medium-scale banana processing industries. Keywords: Banana Slicer, Manufacturing Process, Production Cost, Machine Performance, Agro-Industry Key Findings Highlights Total fabrication duration reached 29.63 hours with structured process stages Optimal blade configuration identified for uniform slice thickness Economic calculation established selling value with defined profit margin
Steam Assisted Waste Oil Stove Produces High Velocity Flow: Kompor Minyak Limbah Bertenaga Uap Menghasilkan Aliran Berkecepatan Tinggi Fernanda, Ardhi Shefta; Mulyadi; Widodo, Edi; Akbar, Ali
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2128

Abstract

General Background: Waste management and alternative energy utilization are critical challenges in sustainable engineering systems. Specific Background: Conventional combustion systems often rely on mechanical devices such as blowers to improve combustion, which increases complexity and energy consumption. Knowledge Gap: Limited studies integrate steam boiler systems directly into combustion processes to generate airflow without additional mechanical assistance. Aims: This study aims to design and analyze a steam-assisted combustion stove using waste oil as fuel, focusing on thermal performance, steam generation, and flow characteristics. Results: The system employs a steam boiler with dimensions of 40 × 40 × 40 cm, producing steam at a rate of 0.0170 kg/s with a required heating power of 38,382 W and fuel consumption of 1.2 kg/h. Simulation results show flow velocities ranging from 52.8 m/s in the pipe to 531 m/s at the nozzle, indicating significant acceleration due to geometric constriction. Novelty: The integration of a steam boiler into a combustion system enables the conversion of thermal energy into kinetic energy flow without mechanical air supply devices. Implications: The design provides a practical solution for improving combustion performance using waste-derived fuel while maintaining system simplicity and safety. Keywords: Steam Boiler, Waste Oil Fuel, Combustion System, Flow Velocity, Thermal Design Key Findings Highlights Steam generation reached stable mass flow under defined thermal conditions Nozzle configuration created substantial acceleration in fluid stream Structural design met pressure resistance and operational safety criteria
Waste Melting Stove Achieves 25 Kilogram Per Hour Capacity: Kompor Pelebur Sampah Mampu Memproses 25 Kilogram Per Jam Ferdiansyah, Faris; Mulyadi; Widodo , Edi; Fahruddin , A`rasy
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2129

Abstract

General Background: Organic waste accumulation presents significant environmental challenges, including methane emissions and pollution. Specific Background: Conventional waste treatment methods often require high energy consumption and incur substantial operational costs. Knowledge Gap: There is limited development of low-cost waste melting systems utilizing alternative fuels such as used oil combined with water to support combustion. Aims: This study aims to design, manufacture, and evaluate the performance of an organic waste melting stove using a mixture of used oil and water. Results: The manufacturing process involves design, material selection, fabrication, assembly, and testing, with a total production time of approximately 635 minutes. The total production cost is calculated at Rp 2,719,100, and the selling price is determined at Rp 3,534,830 with a 30% profit margin. Performance testing shows that a 4 mm nozzle achieves a combustion capacity of 25 kg/hour, while an 8 mm nozzle produces 7 kg/hour. Novelty: The study introduces a waste melting stove integrating alternative fuel from used oil and water with detailed manufacturing cost and performance evaluation. Implications: The system provides a practical and economical solution for organic waste processing and supports sustainable waste management practices. Keywords: Waste Melting Stove, Used Oil Fuel, Combustion Capacity, Manufacturing Cost, Waste Management Key Findings Highlights Fabrication completed within 635 minutes using structured stages Smaller nozzle configuration produced higher burning throughput Economic calculation defined marketable price with profit margin
OEE Evaluation Shows 68 Percent Machine Productivity Level: Evaluasi OEE Menunjukkan Tingkat Produktivitas Mesin Sebesar 68 Persen Putra S, M. Reyvaldo; Putra, Boy Isma
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2130

Abstract

General Background: Productivity and machine effectiveness are critical factors in manufacturing systems to ensure product quality and operational efficiency. Specific Background: In PVC pipe production, machine downtime and performance issues often reduce overall productivity levels. Knowledge Gap: Limited integration of Overall Equipment Effectiveness and Failure Mode and Effect Analysis is applied to identify root causes and prioritize improvements in machine performance. Aims: This study aims to evaluate machine productivity using OEE and determine improvement priorities using FMEA in a PVC pipe production process. Results: The analysis shows an average availability of 91%, performance rate of 80%, and quality rate of 93%, resulting in an OEE value of 68%, which is below the ideal standard of 85%. The main causes of low effectiveness are related to downtime factors such as pipe defects, machine instability, and operator-related issues. FMEA analysis identifies priority improvements with the highest Risk Priority Number of 648, followed by 392 and 378. Novelty: The study combines OEE and FMEA to provide a structured evaluation of machine productivity and prioritized corrective actions. Implications: The findings offer practical guidance for improving machine performance and reducing downtime in manufacturing operations. Keywords: Machine Productivity, OEE Analysis, FMEA Method, Downtime Factors, Manufacturing System Key Findings Highlights Combined metrics revealed suboptimal operational performance below standard threshold Root cause mapping identified dominant sources of production interruption Risk prioritization guided targeted corrective action planning

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