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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 
IoT Based Electrical Monitoring System Using PZEM Sensor: Sistem Pemantauan Listrik Berbasis IoT Menggunakan Sensor PZEM Budiarso, Cahyo; 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.v26i4.2109

Abstract

General Background Electrical energy monitoring is essential for ensuring efficient energy usage and system reliability in modern environments. Specific Background The integration of Internet of Things technology enables real-time monitoring of electrical parameters such as voltage, current, and power. Knowledge Gap However, existing systems often lack integrated monitoring platforms with reliable data transmission and accessible interfaces. Aims This study aims to design and implement an IoT-based electrical monitoring system using sensor modules and microcontroller platforms. Results The developed system successfully monitors electrical parameters and transmits data in real-time to a user interface, demonstrating functional performance under testing conditions. Novelty The system integrates sensor-based measurement with IoT communication and user-friendly monitoring interface in a unified framework. Implications The results provide a practical solution for real-time electrical monitoring and support further development of smart energy management systems. Keywords: IoT Monitoring, Electrical Parameters, PZEM Sensor, Energy Monitoring, Smart System Key Findings Highlights Real-time measurement achieved through integrated sensor system Data transmission enables remote monitoring capability System architecture supports scalable implementation
Circular Cardboard Cutter Design for Piggy Bank MSME Production: Desain Pemotong Karton Bulat untuk Produksi Celengan oleh UMKM Wibawansyah, Sulung; 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.v26i4.2110

Abstract

General Background Micro, small, and medium enterprises require efficient production tools to support increasing demand and operational sustainability. Specific Background Manual cutting processes in piggy bank production are time-consuming and limit productivity. Knowledge Gap Existing practices lack simple, efficient, and affordable cutting tools specifically designed for MSME-scale production. Aims This study aims to design a circular cardboard cutting tool using an electric motor and to determine the most suitable design concept. Results The selected concept A demonstrates a maximum von Mises stress of 5.433 MPa, maximum displacement of 0.041 mm, and a safety factor of 43, indicating structural safety. The design provides high efficiency and ease of manufacturing. Novelty This study integrates morphological chart-based concept generation with structural simulation for MSME-oriented tool design. Implications The proposed design offers a practical and affordable solution to support production capacity improvement in small-scale piggy bank manufacturing. Keywords: MSME Production, Morphological Chart, Product Design, Cardboard Cutting, Mechanical Simulation Key Findings Highlights Selected configuration meets structural safety requirements Concept evaluation identifies most feasible design alternative Tool structure supports stable operational performance
CFD Simulation Reveals Pressure Drop in Pipe Flow System: Simulasi CFD Mengungkap Penurunan Tekanan pada Sistem Aliran Pipa Yunus, Muhamad Ridwan; Akbar, Ali; Firdaus , Rachmat; Mauliana , Metatia Intan \
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.v26i4.2111

Abstract

General Background Fluid flow analysis in piping systems is essential for understanding energy losses and system performance in engineering applications. Specific Background Computational Fluid Dynamics (CFD) has been widely applied to simulate fluid behavior and pressure distribution in complex pipe geometries. Knowledge Gap However, detailed analysis of flow characteristics and pressure drop in specific pipe configurations, particularly at bends, remains limited. Aims This study aims to analyze fluid flow patterns and pressure drop in a piping system using CFD simulation. Results The results show that pressure drop increases with higher flow velocity and is significantly affected by pipe geometry, especially at bends where turbulence and vortex formation occur. Flow visualization indicates non-uniform pressure distribution and localized energy losses. Novelty This study provides detailed numerical insight into the interaction between flow velocity and pipe geometry using CFD visualization. Implications The findings can support the optimization of piping system design to reduce energy losses and improve operational efficiency. Keywords: Computational Fluid Dynamics, Pressure Drop, Pipe Flow, Fluid Simulation, Turbulence Key Findings Highlights Increased velocity intensifies energy loss along piping sections Flow separation appears prominently in curved geometry regions Numerical visualization clarifies localized pressure distribution patterns
PERT Scheduling Reduces Project Time and Cost: Penjadwalan PERT Memperpendek Waktu dan Mengurangi Biaya Proyek Rohmatdhoni, Syarif; 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.v26i4.2112

Abstract

General Background Project scheduling plays a crucial role in ensuring time and cost efficiency in industrial operations. Specific Background In electrical installation projects, inaccurate planning often leads to delays and increased costs. Knowledge Gap However, optimization of project scheduling using probabilistic methods is still not fully applied in small-scale industrial projects. Aims This study aims to evaluate project scheduling using the Program Evaluation and Review Technique (PERT) to improve time and cost planning. Results The results indicate that project duration decreased from 222 minutes to 163 minutes, while project costs were reduced from Rp232,362 to Rp170,608, resulting in significant savings without compromising work quality. The probability of project completion reached 99%, indicating a high level of planning reliability. Novelty This study provides a quantitative application of PERT in electrical installation projects with measurable efficiency outcomes. Implications The findings support the use of PERT as a reliable tool for optimizing project scheduling and cost management in similar industrial contexts. Keywords: Project Scheduling, PERT Method, Time Optimization, Cost Reduction, Network Analysis Key Findings Highlights Shorter completion duration achieved through critical path restructuring Budget allocation decreased while maintaining work standards High completion probability indicates strong planning reliability
Project Scheduling Optimization Using PERT and CPM Methods: Optimalisasi Penjadwalan Proyek Menggunakan Metode PERT dan CPM Istighfarian, Muhammad ‘Athif; 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.v26i4.2113

Abstract

General Background Project scheduling is a critical aspect in ensuring timely completion and efficient resource allocation in construction and industrial projects. Specific Background Techniques such as Program Evaluation and Review Technique (PERT) and Critical Path Method (CPM) are widely applied to analyze project timelines and identify critical activities. Knowledge Gap However, limited integration of both methods in practical case studies leads to suboptimal scheduling decisions. Aims This study aims to analyze and optimize project scheduling using PERT and CPM to determine critical paths and estimated completion times. Results The analysis identifies key activities influencing project duration and reveals opportunities to reduce completion time compared to initial planning. Novelty The study provides a combined application of probabilistic and deterministic scheduling approaches within a single project context. Implications The findings support more structured planning and improved time control in project management practices Keywords: Project Scheduling, PERT Method, CPM Method, Critical Path, Time Pptimization Key Findings Highlights Critical activities determine overall project duration Probabilistic estimation provides flexible time prediction Combined approach yields more structured planning
TIG Welding Current Selection Based on Penetrant Test Results: Pemilihan Arus Las TIG Berdasarkan Hasil Uji Penetran Soliqudin, Mochammad; 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.v26i4.2114

Abstract

General Background Welding plays a crucial role in metal joining processes across construction and manufacturing industries. Specific Background Tungsten Inert Gas welding is widely used for aluminum components such as motorcycle rims due to its precision and quality. Knowledge Gap However, determining the optimal welding current to minimize surface defects remains a challenge. Aims This study aims to analyze the effect of current variation on TIG welding results using liquid penetrant testing. Results The findings show that lower current produces fewer defects, while higher current increases the occurrence of surface defects such as cracks and porosity. The optimal welding parameter is identified at 100A, which yields the best joint quality. Novelty This study highlights the integration of current variation analysis with penetrant testing for aluminum rim welding evaluation. Implications The results provide practical guidance for selecting welding parameters and improving early defect detection in aluminum welding processes. Keywords: TIG Welding, Aluminum Rims, Welding Current, Penetrant Testing, Welding Defects Key Findings Highlights Lower amperage produces minimal surface discontinuities Higher heat input correlates with defect formation Inspection method supports early quality verification
TIG Welding Current Variation and Impact Strength of Aluminum Rims: Variasi Arus Pengelasan TIG dan Kekuatan Dampak Pelek Aluminium Pratama, Dimas Mahendra Wahyu; 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.v26i4.2116

Abstract

General Background Welding is widely applied in construction and metal repair, requiring proper parameter selection to ensure joint quality. Specific Background TIG welding is commonly used for aluminum materials due to its precision and controlled heat input. Knowledge Gap However, limited studies focus on the relationship between welding current variation and impact strength in aluminum rims. Aims This study aims to analyze the effect of TIG welding current variations (70A, 80A, and 90A) on the impact strength of aluminum rim joints. Results The experimental results show that welding current significantly affects impact strength, with the highest value of 0.320 Joule/mm² obtained at 90A and the lowest value of 0.204 Joule/mm² at 80A. Higher current increases weld penetration and improves joint strength. Novelty This research provides specific experimental evidence on optimal current settings for aluminum rim welding using TIG. Implications The findings offer practical guidance for selecting welding parameters to achieve stronger and more reliable aluminum joints in industrial applications Keywords: Tig Welding, Aluminum Rims, Welding Current, Impact Strength, Charpy Tes Key Findings Highlights Highest toughness observed at maximum current setting Mid-level current produced the weakest joint performance Penetration depth correlates with mechanical resistance
Rice Planting Machine Design with Uniform Spacing Mechanism: Desain Mesin Penanam Padi dengan Mekanisme Jarak Tanam yang Seragam Aftian, Muhammad Alriz Nur; 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.v26i4.2117

Abstract

General Background Agricultural productivity depends on efficient and uniform planting methods. Specific Background Mechanical rice planting tools are developed to replace manual methods and improve consistency. Knowledge Gap However, limited studies focus on design selection based on systematic evaluation methods for rice planting machines. Aims This study aims to design and determine the best concept of a rice planting machine using the Ulrich and Eppinger method. Results The evaluation shows that Concept A achieves the highest score based on manufacturability, operation, maintenance, and cost criteria, and is capable of planting seedlings with a spacing of 25 cm × 25 cm. Novelty The study applies a structured concept selection approach combined with mechanical system design for rice planting. Implications The proposed design provides a practical solution to improve planting uniformity, reduce labor effort, and support agricultural efficiency. Keywords: Rice Planting Machine, Mechanical Design, Concept Selection, Agricultural Equipment, Planting Mechanism Key Findings Highlights Selected design achieved highest evaluation score Planting pattern maintained consistent grid spacing Integrated mechanism supports synchronized motion
Ergonomic Risk Assessment of Fabric Measuring and Cutting Workstations: Penilaian Risiko Ergonomis pada Stasiun Kerja Pengukuran dan Pemotongan Kain Iswahyudi; 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.v26i4.2118

Abstract

General Background Work-related musculoskeletal disorders are often caused by non-ergonomic working postures in manual activities. Specific Background Fabric measuring and cutting processes are commonly performed in awkward positions such as bending and squatting, increasing ergonomic risk. Knowledge Gap However, limited studies evaluate these activities using combined RULA and NERPA assessment methods. Aims This study aims to analyze the working posture of operators in fabric measuring and cutting processes using RULA and NERPA methods. Results The findings show that the measuring activity obtains a RULA score of 6, indicating moderate risk, while the cutting activity reaches a score of 7, indicating high risk requiring immediate action. Using NERPA, both activities show a score of 6, indicating moderate risk requiring improvement. Novelty This study applies dual ergonomic assessment methods to identify risk levels in specific textile work activities. Implications The results support the need for ergonomic workstation design, including the proposed worktable, to reduce posture-related risks and improve worker safety. Keywords: Ergonomic Assessment, RULA Method, NERPA Method, Musculoskeletal Disorders, Work Posture Key Findings Highlights Cutting task shows highest risk classification Both techniques indicate need for corrective action Workstation redesign recommended to reduce strain
EOQ Application Reduces PAC Inventory Cost in Water Treatment: Penerapan EOQ Mengurangi Biaya Persediaan PAC dalam Pengolahan Air Faradiba, Vanisa Reyhan; 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.v26i4.2120

Abstract

General Background Inventory control plays a critical role in ensuring operational efficiency in water treatment systems. Specific Background Poly Aluminium Chloride (PAC) is a key chemical used in PDAM operations, requiring proper inventory management to avoid shortages and excessive costs. Knowledge Gap However, existing ordering policies often rely on frequent purchases without optimal cost considerations. Aims This study aims to analyze PAC inventory control using the Economic Order Quantity (EOQ) method to determine optimal ordering quantity and minimize total costs. Results The findings show that the optimal order quantity is 151,669.56 kg with an ordering frequency of 4 times per year, compared to 48 times under the company policy. Total inventory cost decreases from Rp54,287,987.83 to Rp7,886,816.84, resulting in significant cost savings. Safety stock is calculated at 10,199 kg and reorder point at 20,398 kg. Novelty This study applies EOQ analysis to PAC inventory in a water treatment context using real operational data. Implications The results provide a practical approach for improving inventory efficiency and reducing operational costs in water treatment companies. Keywords: Economic Order Quantity, Inventory Control, PAC Chemical, Water Treatment, Cost Optimization Key Findings Highlights Optimal order size significantly larger than current practice Ordering frequency reduced from monthly to quarterly pattern Inventory cost shows substantial reduction after method application

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