JIE Scientific Journal on Research and Application of Industrial System
JIE (Journal of Industrial Engineering): Scientific Journal on Research and Application of Industrial System, (Online ISSN: 2527-4139; Printed ISSN 2503-3670) is an accredited (SINTA 4) scientific journal in the field of industrial engineering that publishes scientific writings on pure and applied research in industrial system. The journal is published by President University in March and September. This journal covers industrial engineering issues, including (but not limited to): production system, Inventory management, quality control & management, work system analysis, product design, optimation, and productivity.
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Comparative Analysis and Selection Based on AHP and Threshold Switching for LNG Crew Transportation in Remote Areas (Case Study: PT. XYZ Sorong, West Papua)
Crew transportation plays a crucial role in ensuring the smooth operation of the Liquid Natural Gas (LNG) facility in West Papua. Current transportation relies on a combination of Dash 8 aircraft from Sorong to Babo, followed by small vessels to the LNG site. The challenges faced include dependence on weather conditions and ground infrastructure, which pose operational risks. This study aims to evaluate the effectiveness of the Fast Cruising Vessel (FCV) mode as a more efficient and reliable alternative for crew transportation. A descriptive-comparative method was used with the Analytic Hierarchy Process (AHP) approach and supported by a cost-efficiency threshold switching analysis. The assessment was conducted on eight main criteria, including travel time, cost, capacity, risk, comfort, flexibility, and infrastructure requirements. Data were obtained from technical documents and questionnaires from energy logistics practitioners. The AHP results showed that the FCV Damen Fast Ferry 4212 had the highest score (0.309), while the threshold switching calculation showed that the FCV mode resulted in cost savings of more than 80%, far exceeding the 25% threshold for modal shift feasibility. With minimal port infrastructure requirements and high flexibility, the FCV mode is considered the most technically, economically, and operationally feasible to support LNG crew rotations in remote areas. This study contributes to decision-making regarding maritime logistics strategies in remote areas, recommending FCVs as an efficient and reliable solution.
Copyright (c) 2025 Hally Hanafiah, Budihardjo, Alfian, Danang Bayuaji Kusuma http://creativecommons.org/licenses/by-nc/4.0
The Effect of Logistic Service Quality on Customer Satisfaction Using Courier Service in Banyumas
This study examines the impact of Logistic Service Quality (LSQ) on customer satisfaction among users of courier services in Banyumas Regency. The study included 210 respondents, evenly distributed across all sub-districts in Banyumas Regency. Determination of the number of samples using purposive sampling. This study only focuses on consumer perceptions of the experience of using courier services. This study employs five LSQ dimensions: timeliness (T), order accuracy (A), information quality (I), personal contact quality (C), and handling of non-conformance orders (O), comprising a total of 22 question attributes. This research found that the five dimensions of LSQ have a simultaneous effect of 72% on customer satisfaction. Moreover, the LSQ variable that has the most influence on customer satisfaction is personal contact ability (C), with a beta value of 0.056.
Copyright (c) 2025 Nabila Noor Qisthani, Achmad Zaki Yamani, Isnaini Nurisusilawati http://creativecommons.org/licenses/by-nc/4.0
Enhancing Digital Service Quality in Real Estate Platforms with AI-Augmented E-SERVQUAL and Topic Modeling
Digitalization has accelerated the growth of the property technology (proptech) industry, particularly in real estate marketplaces. As competition intensifies, platforms must enhance their digital service quality to meet the evolving needs of both users and agents. This study aims to develop an improvement model by focusing on the service dimension with the highest gap between importance and performance. A mixed-methods approach was employed using user reviews collected from Google Play, comprising a total of 400 reviews from the four most widely used real estate applications in Indonesia. The analysis considered importance (aspects most frequently discussed) and performance (aspects with the highest ratings). Thematic analysis of user and agent feedback was first conducted to construct the initial E-SERVQUAL model. This qualitative insight was then validated using Latent Dirichlet Allocation (LDA) and refined through Importance–Performance Analysis (IPA) to identify key service gaps. Results show that the System Availability dimension, particularly subdimension X19 (core feature functionality), exhibits the largest gap score of 3.464, placing it in the top-priority quadrant. LDA results reinforce this finding through Topic 6, which highlights complaints about app quality, especially regarding property advertisements and listing accuracy. To address this, the study proposes an AI-augmented core feature functionality model that integrates ad optimization, intelligent listing validation, and automated error detection to enhance operational efficiency, system accuracy, and overall user experience. The findings are particularly relevant for PT ABC, a new real estate platform currently facing declining performance. By benchmarking user feedback from top Indonesian property marketplaces, this study provides strategic insights for improving service quality, competitiveness, and digital transformation within the proptech ecosystem.
Copyright (c) 2025 Sayyidah Maulidatul Afraah, Zahwa Aghniya Putri http://creativecommons.org/licenses/by-nc/4.0
Development and Optimization of a Real-Time Tracking System for Toy Plastic Assembly Using Object-Oriented Analysis and Design
PT ABC Toy Company, a global toy manufacturer known for fashion dolls, faced significant production delays in its Plastic Assembly department, averaging 5–7 days per product due to an inefficient manual tracking system. These delays resulted in production bottlenecks and missed deadlines, affecting the company’s ability to meet market demands. This study aimed to develop and implement a web-based tracking system using Object-Oriented Analysis and Design (OOAD) to minimize delays, improve material management, and optimize production scheduling. The new system provided real-time monitoring of materials, piloting status, and production schedules, automating manual processes and enhancing interdepartmental communication. Implementation of the system led to a 62.36% reduction in delays, decreasing the average delay from 5–7 days to approximately 2 days. This improvement increased production capacity, reduced overtime and penalty costs, and facilitated more timely product deliveries. The findings highlight how an optimized tracking system can enhance operational efficiency, improve customer satisfaction, and strengthen the company’s market position.
Copyright (c) 2025 Hery Hamdi Azwir, Mutiara Hasnadya Tasrif, Herwan Yusmira http://creativecommons.org/licenses/by-nc/4.0
Comparative Analysis of Service Quality Toward Customer Satisfaction Between Local Independent Coffee Shop and Local Franchise Coffee Shop
The rapid growth in the coffee industry has indeed affected competition in both independent coffee shops and franchises. In the beverage and food sectors, service quality plays an important part in satisfying customers and attracting them to purchase more products or services. This study aims to compare the customer satisfaction analysis of service quality between two local coffee shops, namely Janji Jiwa and Neph Coffee & Eatery. The approaches used in this study are the Customer Satisfaction Index (CSI) and SERVQUAL gap. The conformity between perception and expectation of respondents of both coffee shops on service quality was analyzed based on SERVQUAL gap by using spider web diagram. The results show that both coffee shops scored 85% on the Customer Satisfaction Index. However, the SERVQUAL gap results in Janji Jiwa is -0.229, and in Neph Coffee & Eatery is -0.366. Negative value indicating that the service they offer still has not met the customer expectations. The study found empathy is the most essential dimension for Janji Jiwa and Neph Coffee & Eatery customers, but both coffee shops still have a negative gap in this dimension. Therefore, the two coffee shops need to focus on improving their service quality.
Copyright (c) 2025 Putri Najlaa Salsabilla, Andira Taslim http://creativecommons.org/licenses/by-nc/4.0
Perencanaan Safety Stock Menggunakan Metode Peramalan pada Proses Produksi Kemasan PT Empat Perdana Karton
Manajemen persediaan merupakan aspek krusial dalam industri manufaktur guna memastikan kelancaran produksi dan efisiensi operasional. Salah satu elemen penting dalam pengelolaan persediaan adalah safety stock yang berfungsi untuk mengantisipasi ketidakpastian permintaan dan gangguan rantai pasok. Penelitian ini bertujuan untuk menganalisis pola permintaan produksi kemasan di PT Empat Perdana Carton, menerapkan metode peramalan Autoregressive Integrated Moving Average (ARIMA), serta menentukan jumlah safety stock yang optimal. Data permintaan produksi dikumpulkan dari Januari 2020 hingga Desember 2023 dan dianalisis menggunakan perangkat lunak Minitab. Hasil penelitian menunjukkan bahwa model ARIMA (4,0,3) merupakan model terbaik dengan Mean Square Error (MSE) sebesar 7557,63. Berdasarkan hasil peramalan, dilakukan perhitungan safety stock dengan berbagai tingkat service level (90%-99%). Hasilnya menunjukkan bahwa jumlah safety stock yang optimal bervariasi antara 189 hingga 344 unit, tergantung pada tingkat layanan yang dipilih. Temuan ini memberikan kontribusi bagi perusahaan dalam mengoptimalkan perencanaan persediaan guna menghindari kekurangan atau kelebihan stok, serta meningkatkan efisiensi operasional.
Copyright (c) 2025 Radif Ramadan, Risma Fitriani http://creativecommons.org/licenses/by-nc/4.0
Sifat Fisis Dan Mekanis Papan Partikel Kayu Sengon (Falcataria Moluccana) Akibat Perlakuan Pendahuluan Panas
Papan partikel kayu sengon sangat banyak dimanfaatkan dalam industri kayu ataupun industri furnitur, namun papan partikel kayu sengon memiliki kelemahan yaitu stabilitas dimensi sifat fisis maupun kekuatan sifat mekanisnya yang rendah. Perlakuan perendaman panas dan steam perlu dilakukan untuk memperbaiki sifat fisis maupun mekanis papan partikel kayu sengon. Adapun tujuannya dari penelitian ini guna mengevaluasi pengaruh dari perlakuan pendahuluan panas pada sifat fisis maupun mekanis papan partikel kayu sengon (Falcataria moluccana). Partikel kayu sengon diberi perlakuan perendaman panas pada suhu 80oC dengan durasi 120 menit dan perlakuan steam pada suhu 126oC dengan tekanan 0,14 MPa dengan selang waktu 60 menit. Evaluasi pengujian tersebut telah sesuai dengan standar JIS A 5908-2003. Hasil evaluasi mengungkapkan bahwasanya perlakuan steam merupakan perlakuan panas terbaik yang dapat memperbaiki sifat fisis maupun mekanis papan partikel kayu sengon.
Copyright (c) 2025 Soleh Muhamad, Nurhanifah, Desy Mulyosari, Siska Anggiriani, Arip Wijayanto, Nurmadina http://creativecommons.org/licenses/by-nc/4.0
Implementation of Lean Manufacturing To Reduce Waste in Calliper Bracket Production
Initial observations at PT. PPE showed that the production of calliper brackets failed to meet monthly targets for four consecutive months. Investigations carried out by the team showed that the inability to meet production targets was caused by waiting and transportation activity, which can cause longer production lead times. Some wastes were found,such aswaiting for a forklift, andtransportation of material movingsbetween workstations. To overcome this problem, PT. PPE uses 5S, one of the lean manufacturing tools. The research began with direct observation to determine the actual production floor situation. The next stage is the problem identification process using Value Stream Mapping (VSM), Process Activity Mapping(PAM), spaghetti diagram, and fishbone diagram. Some 5S-based corrective actions implemented include sorting unused goods, arranging materials, maintaining cleanliness, updating work instructions, and creating a 5S check sheet. The result of implementing 5S in calliper bracket production was that lead time decreased from 8.05 days to 5.53 days or 31.30%. Sales losses can be reduced from IDR 1,936,100,000 to IDR 111,150,000 or decrease by 94.26%.
Copyright (c) 2025 Mr, Toha Mohamad, Alfi Syahrin Syah Putri https://creativecommons.org/licenses/by-nc-sa/4.0
Designing Delivery Entry Ticket System for Optimizing Transport Logistic Data Recording and Report At Pharmaceutical Company, Cikarang, West Java
This study details the planning, development until deployment phase of a system designed to enhance the efficiency and practicality of data recording, monitoring, and monthly report generation within a pharmaceutical company. The current problem faced by the company is the inefficiency in monthly report creation process. The existing method required over five working days to complete all monthly reports due to the reliance on manual report compilation. There are 34 gates spanning across the warehouse side allowing for 34 simultaneous product movement process. It is very challenging to find out which process is happening at which gate without a single interface showing the information. The root cause analysis finds that the source problem is individual document storage and the data input method causes many incomplete and inconsistent data records resulting in a long time needed to check or validate data that will be reported. This research aims to make improvements in process efficiency and data completeness using System Development Life Cycle (SDLC) method, from planning, analysis, design to development, testing, deployment, and maintenance As a result, this new system which utilizes Microsoft Excel VBA for automation and data manipulation has succeeded in optimizing loading and unloading data recording, resulting in more complete and consistent data records. This allows the user to create monthly report more efficiently which needs less time and recheck. Also, the creation of a truck activity dashboard, allows warehouse personnels and the transport manager to monitor all the truck and gate activity practically and even remotely.
Copyright (c) 2025 Hery Hamdi Azwir, Nicko Fernando, Herwan Yusmira https://creativecommons.org/licenses/by-nc-sa/4.0
Analisis Efektivitas Mesin Incinerator Reciprocating CRE-500 dengan Menggunakan Metode OEE dan RCA+
PT. XYZ merupakan perusahaan yang bergerak di bidang pengelolaan limbah B3 dengan menggunakan mesin Incinerator Reciprocating CRE-500 sebagai fasilitas utamanya. Namun, mesin ini memiliki downtime tertinggi mencapai 9,6 jam, yang berdampak signifikan terhadap penurunan efektivitas operasional. Penelitian ini bertujuan untuk menghitung dan menganalisis nilai Overall Equipment Effectiveness (OEE) beserta komponennya, yaitu Availability, Performance, dan Quality Rate, sebagai tolok ukur produktivitas mesin. Selain itu, dilakukan identifikasi akar penyebab ketidakefektifan mesin melalui pendekatan Root Conflict Analysis (RCA+). Hasil perhitungan menunjukkan nilai OEE mesin Incinerator Reciprocating CRE-500 sebesar 59% pada bulan Desember 2024, angka ini masih berada di bawah standar world class OEE sebesar 85%. Analisis RCA+ berhasil mengidentifikasi enam kontradiksi utama yang menjadi penyebab rendahnya efektivitas mesin, di antaranya adalah ketidaksesuaian prosedur operasi, keterbatasan pada sistem pendinginan, serta frekuensi perawatan yang belum optimal. Temuan ini menjadi dasar penting bagi perusahaan dalam merumuskan strategi peningkatan efektivitas mesin dan efisiensi proses operasional secara menyeluruh.
Copyright (c) 2026 Putri Sulistya Ananda Syahril, Faishal Arham Pratikno, Putri Gesan Prabawa Anwar https://creativecommons.org/licenses/by-nc-sa/4.0
Developing A Web Based OEE Monitoring System for Pharmaceutical Industry
PT. XYZ is a leading biopharmaceutical company in Indonesia that produces and sells health products. A critical aspect of its operations is calculating Overall Equipment Effectiveness (OEE) to ensure optimal production and minimize downtime. Currently, XYZ conducts OEE calculations manually, leading to significant challenges. Manual data collection and processing are time-consuming, taking up to a week to complete. This delay hinders timely decision-making and increases the risk of errors, including miscalculations and inaccuracies in data analysis. Such inefficiencies negatively impact production planning and resource utilization. To address this problem, this research proposes the development of a web-based application to automate the OEE calculation process. Using the Object-Oriented System Design (OOSD) approach and Object-Oriented Programming (OOP) methodology, the application streamlines OEE data input, automates the calculation of Availability, Performance, and Quality components, and presents results through interactive visualizations. By transitioning from a manual to an automated system, the new application significantly reduces the time required for OEE calculations, providing users with fast and accurate results to support better operational decisions.
Copyright (c) 2026 Hery Hamdi Azwir, Kevin Desmalilo, Herwan Yusmira https://creativecommons.org/licenses/by-nc-sa/4.0
Development of an Artificial Neural Network Model for Predicting Speeding Behaviour: A Case Study from Indonesia
Traffic accidents are the third leading cause of death in Indonesia, with speeding behavior being the predominant human factor responsible for most fatal outcomes. Early detection of drivers’ propensity to speed is therefore essential for effective prevention strategies. This study develops an Artificial Neural Network (ANN) model to predict the tendency of drivers to speed on intercity roads using a labeled questionnaire dataset comprising 14 input variables. The dataset was divided into training, validation, and testing subsets, where the validation set was used for hyperparameter tuning, while the testing set was used for final evaluation on unseen data. The model was trained using the Adam optimizer with a binary cross-entropy loss function. The optimal configuration consists of a single hidden layer with 12 neurons using ReLU activation, a Sigmoid output layer, 750 training epochs, and a learning rate of 0.03. The final model achieved an accuracy of 86.67% and a Cohen’s kappa value of 0.7339, which indicates strong predictive reliability. These findings demonstrate the model’s potential as a valuable tool for relevant stakeholders to identify high-risk drivers and design targeted interventions. As a result, the model can be used to proactively reduce speeding-related traffic accidents and improve road safety on intercity routes.
Copyright (c) 2026 Sekar Sakti, Lintang Maulida Sekar Bawono, Fitri Trapsilawati http://creativecommons.org/licenses/by-nc/4.0
Ergonomic Redesign in Scrap Area to Reduce the Risk of Cumulative Trauma Disorders and to Increase Capacity at Toy Manufacturing Company
In the auto rooting area, rejected rooted heads undergo scrap process before being discarded. A solder is currently used, which only destroys both eyes and thus, may increase the risk of rework done by irresponsible parties. A new tool using a toggle is preferable as it is more effective in removing the entire face. However, the toggle has a smaller capacity compared to the solder, which prevents the full transition. Upon observation, it is found that there are many non-ergonomic and non-value-added activities. This resultingly increases the risk of Cumulative Trauma Disorders (CTDs), particularly carpal tunnel syndrome, and reduces toggle capacity. Anthropometry and Rapid Upper Limb Assessment (RULA) are used to analyze the current posture and dimension. The method used to redesign the scrap workstation is Quality Function Deployment (QFD). The results of this study are that using, the newly improved workstation reduces RULA score from 6 to 2. Based on Nordic Body Map, the operator only feels pain in one body part, compared to the five body parts before improvement. By changing the pinch grip to a power grip, risks associated with carpal tunnel syndrome are minimized. Toggle capacity also increases by 49% from 300 to 448 rooted heads.
Copyright (c) 2024 Hery Hamdi Azwir, Herwan Yusmira
Evaluasi Postur Kerja Operator Pada Lini Perakitan Industri Furnitur
PT. Philnesia International Semarang merupakan perusahaan yang bergerak di bidang Indoor dan Outdoor Furniture Manufacturer dengan jenis industri (KLUI) mebel dari kayu. Salah satu proses produksi di PT. Philnesia International Semarang yang masih bersifat manual adalah proses perakitan (assembling). Pekerja mengeluhkan rasa sakit dan kelelahan pada bagian tubuh. Penelitian tentang analisis postur kerja pada proses perakitan dilakukan agar pekerja tidak mengalami rasa sakit dan kelelahan. Penelitian dilakukan dengan metode Rapid Entire Body Assessment (REBA) dan Rapid Upper Limb Assessment (RULA). Hasil penelitian menunjukkan bahwa Nilai postur kerja pada proses perakitan di PT. Philnesia International Semarang dengan metode REBA dan RULA adalah 6 Nilai tersebut menunjukkan bahwa postur kerja harus segera diperbaiki dan dilakukan perancangan fasilitas yang mendukung kenyamanan pekerjaan.
Copyright (c) 2024 Nicolas Hutasoit, Galih Prakoso, Zain Amarta
Application of Lean Manufacturing to Minimize Production Cycle Time in the Aluminum Furniture Division
The production process efficiency is the company's ability to produce optimal output using available resources. When carrying out the production process of aluminium furniture, PT Rajawali Perkasa Furnitur (RPF) has a significantly long cycle time, which results in low efficiency or can be said to be experiencing wastefulness. Through the implementation of lean manufacturing using Value Stream Mapping (VSM) and Process Activity Mapping (PAM) methods, this study aims to minimize the cycle time. The production process of aluminium furniture includes (1) cutting, (2) bending, (3) assembly, (4) leveling, (5) QC, (6) Treatment, (7) powder coating, (8) weaving, (9) touch up, (10) inspect, and (11) packaging. The total cycle time for these processes is 13.431 seconds. Based on the research, it is found that there are 3 non-value-added activities, namely 2 activities in the weaving process and 1 activity in the packaging process. The elimination of these 3 activities results in a reduction of the cycle time by 464 seconds to 12.967 seconds.
Copyright (c) 2024 Muhammad Ilwas fathyudha, Indro Prakoso, Ayu Anggraeni Sibarani
Proposed Business Expansion of Yatai Tori using Constraint Management
Yatai Tori management expects the business to double in size from its current condition while facing a minimal market growth of 3.7%. In the Market sector, performance needs to be perfect: tasty menu, Friendly Service, Clean and Attractive tools, Fast responses from the servants, and Clear and easy access to information on social media. In terms of the physical sector, the space of Yatai Tori is sufficient to handle 40 clients per day, which is double the existing performance of 15 customers per day. It should add one person to balance the workload of an employee. Following the Policy sector, management should implement employee compensation to motivate workers to increase performance. And management should find a good supplier to make the minimum possible food cost, increase the favourite menu stock, and decrease the favourite lees menu to control the capacity of Yatai Tori. To elevate the limitation, an investment of Rp. 370.000.000 and a total working capital of Rp. 30.000.000 is required, yielding an internal rate of return of 23.36%.
Copyright (c) 2024 Mohamad Toha, Adi Saptari, Anastasia Lidya Maukar
IMPLEMENTATION OF DMAIC METHODS TO REDUCE SCRAP IN PLASTIC INJECTION MOLDING AREA AT PT.ABC INDONESIA
ABSTRACT Â PT.ABC Indonesia has a project to reduce high number of scraps in Primary Production area. Plastic Injection Molding area contributes over 50% from total scrap in Primary Production area and resulted scrap value that total Rp. 378.803.000 in first quarter of 2023. These scraps happen because of the changeover process procedure. This research use Lean Six Sigma approach through DMAIC Methodology. Several improvements are implemented new procedure for color change and tool change without purging process and slide the hopper when Daily Schedule Adherence achieve 95%. The improvement resulted 57% reduction of scrap in Plastic Injection Molding. In detail, color change and tool change procedure reduce 62% scrap, While the slide hopper process was reduce wrong color scrap by 16%. By this research, the company already saving the cost Rp. 49.237.000 and predicted will save up to Rp. 434.660.000 by the end of year 2023. Â Keywords: DMAIC, Lean, Six Sigma, Plastic Injection Molding, Purging, Scrap, Wrong Color. Â ABSTRAK Â PT.ABC Indonesia memiliki projek untuk mengurangi jumlah skrap di area produksi primer. Area Plastik Injeksi Moulding menyumbang lebih dari 50% dari jumlah skrap pada area produksi primer dan menghasilkan skrap dengan nilai sebesar Rp. 378.803.000 pada kuartal pertama di 2023. Skrap terjadi karena prosedur proses changeover. Riset ini mengaplikasikan pendekatan Lean Six Sigma melalui metode DMAIC. Adapun penyempurnaan yang dilakukan adalah mengimplementasikan prosedur baru untuk pergantian warna dan juga pergantian alat tanpa perlu proses purging, menggeser hopper saat Keterpenuhan Jadwal Harian sudah mencapai angka 95%. Penyempurnaan ini menghasilkan berkurangnya skrap sebesar 57% pada area Plastik Injeksi Moulding. Secara rinci, prosedur penggantian warna dan penggantian alat mengurangi skrap sebesar 62%, dan proses penggeseran hopper mengurangi skrap wrong color sebesar 16%. Dari riset ini, perusahaan sudah melakukan penghematan sebesar Rp. 49.237.000 dan diperkirakan akan menghemat sampai dengan Rp. 434.660.000 di akhir tahun 2023. Â Keywords: DMAIC, Lean, Six Sigma, Plastik Injeksi Moulding, Purging, Skrap, Wrong Color.
Copyright (c) 2024 Denartha Randhika, Ir. Andira Taslim M.T.
Studi Eksperimental Uji Kekuatan Sambungan Klasik dan Sambungan Modern pada Produk Furnitur
Sebagai produk bernilai tinggi dengan daya saing global, furnitur adalah salah satu komoditas strategis bagi ekonomi Indonesia. Pada produk furnitur, sambungan merupakan salah satu titik yang rentan terjadi kerusakan atau kegagalan konstruksi. Sehingga perlu untuk memilih metode sambungan yang tepat agar meminimalisir terjadinya kegagalan pada sambungan produk furnitur. Penelitian ini bertujuan untuk memberikan informasi tentang perilaku beban kegagalan kompresi diagonal pada sambungan kayu yang berbeda (sambungan klasik dan modern) yang dibuat dengan MDF. Metode sambungan yang dipilih yaitu Dowel (D), Biskuit Joint (B), Cross dowel (C), dan Insert nut (N). Pengujian tekan dengan dua skema telah dilakukan untuk melihat seberapa jauh masing-masing sambungan mampu menahan beban luar. Hasil pengujian menunjukkan, sambungan Cross dowel (C) adalah metode sambungan yang paling disarankan karena mampu menahan beban luar paling tinggi serta kemudahan saat instalasi pada produk furnitur knock-down. Sedangkan sambungan biskuit menjadi metode yang tidak disarankan karena selain proses pembuatan konstruksi yang lebih rumit, berdasarkan hasil pengujian tekan sambungan biskuit adalah sambungan yang mampu menahan beban luar paling rendah.
Copyright (c) 2024 Bahtiar Rahmat, Wahyu Widiyanto, Agung Ari Purwanto, Arip Wijayanto, Soleh Muhamad, Desy Mulyosari, Nurmadina Nurmadina http://creativecommons.org/licenses/by-nc/4.0
QUALITY IMPROVEMENT OF FAST MOVING PARTS PROCUREMENT WITH MULTI ATTRIBUTE FAILURE MODE ANALYSIS (MAFMA) IN A PETRO-CHEMICAL INDUSTRY
This paper addressed the problem of high waiting time in a petro-chemical industry in Indonesia. According to Pareto diagram, the procurement process at the industry showed that the number of fast moving item transactions was more than 70% or 19,836 item transactions with 2,524 fast moving material items. The activity of making Purchase Requisition (PR) until the issuance of Purchase Order (PO) for fast moving items required a cycle time of 71.2 days. The highest waste was waiting with a weight of 0.248 and a total of 17 waste items from 27 sub-activities. The average value of sigma for 6 years was 1.79. The application of lean six sigma and MAFMA found that the dominant causes of waste were unfulfilled specified demand and long delivery time. We proposed improvements by enhancing monitoring processes and submitting a contract agreement for the procurement of fast moving spare parts.
Copyright (c) 2023 Dwi Kurniawan, Ghaista Yumna Margani
Evaluasi Produktivitas Pengolahan Bahan Baku Furnitur Dengan Metode Objective Matrix
Produk furnitur menjadi salah satu komoditas strategis bagi ekonomi Indonesia karena memiliki nilai tambah yang tinggi dan berdaya saing global. Pada saat ini industri furnitur merupakan salah satu industri yang berkembang pesat di Indonesia. Cakupan industri furnitur meliputi pengolahan bahan baku alami dan bahan pendukung yang diproses untuk meningkatkan manfaat dan nilai tambah yang tinggi menjadi produk furnitur. PT. XYZ merupakan salah satu perusahaan yang bergerak di bidang industri furnitur dan berlokasi di Semarang, Jawa Tengah. Produk yang dihasilkan PT. XYZ adalah lantai kayu yang berkualitas tinggi. PT. XYZ Semarang banyak mengalami kendala dalam mencapai target produksi yang telah ditetapkan khususnya pada bagian pengolahan bahan baku furnitur. Pada penelitian ini dilakukan evaluasi produktivitas pengolahan bahan baku furnitur di PT. XYZ Semarang dengan metode objective matrix untuk mendapatkan hasil yang akurat. Hasil metode objective matrix berupa indeks produktivitas dan indeks performansi yang menunjukkan tingkat efektivitas dan efisiensi. Selain itu hasil metode objective matrix juga mampu memberikan informasi faktor-faktor yang menyebabkan penurunan tingkat produktivitas berdasarkan kriteria produktivitas. Langkah-langkah perbaikan juga dilakukan sebagai upaya peningkatan produktivitas dan sebagai strategi perencanaan pada periode berikutnya. Berdasarkan hasil tersebut, maka metode objective matrix merupakan metode yang tepat untuk melakukan evaluasi produktivitas pengolahan bahan baku furnitur di PT. XYZ Semarang.
Copyright (c) 2023 Zain Amarta, Julia Dewi Ma'rifah
Pengaruh Desain Rak Sepatu Terhadap Tingkat Kelembaban Didalamnya
The existence of shoe racks has become one of the needs in every residential house and certain building facilities. So far, the design of shoe racks is often neglected both in terms of design and also moisture considerations. Shoes stored in a storage area are susceptible to fungal growth triggered by high humidity in them and can shorten the life of shoes. This study aims to find out the influence of shoe rack design in this case is the ventilation applied to the shelf door design against the moisture inside, so that the shoe rack can function optimally. Humidity measurements were made on 3 shoe racks with 3 door hole design modifications. Modification 1 is a door without ventilation holes, modification 2 is a door with ventilation on part of the door and modification 3 is a door with ventilation on the entire door. Based on the results of humidity measurements on the three modifications, it was obtained that the larger the ventilation holes on the rack, the lower the humidity in it.Â
Copyright (c) 2023 Friska Damayanti, Prasiska Damastuti, Eilsa Adelia
A Combination of Importance-Performance Analysis and Gap Analysis for Improving Quality Service in a Pastry Company
PT. X is a well-known pastry company due to its consistent flavors and high product quality. PT. X saw a decrease in sales while competing businesses saw an increase. Based on the results of the preliminary questionnaire from 33 customers, it is known that customer satisfaction is a factor influencing the decline in sales experienced by PT X. The aim of this research is to identify the factors that influence customer satisfaction and the gap between consumers and management at PT. X and provide recommendations for improving PT. X's service quality to compete with similar companies. This study used an importance-performance analysis, a customer satisfaction index, and a gap analysis to enhance service quality. The findings showed that the customer satisfaction index had a value of 66.78% and that the Cartesian diagram of importance-performance analysis contained seven attributes in quadrant 1, indicating that these attributes require development. The gap analysis results indicate that all attributes have a negative gap value. To increase customer satisfaction, service quality must be improved based on the overall results of data processing. Making SOPs for employees, offering appealing promotions to customers, and rewarding and punishing employees for their efforts are among the recommendations made.Â
Copyright (c) 2023 Hirawati Oemar, Nugraha Nugraha, Maulida Dwi Amelia
Reducing Inbound Warehouse Operation Waste Through Lean Manufacturing: A Case Study of Small and Medium Enterprises (SME)
A third-party producer, Company A, partners with a multinational corporation to package and transport the finished goods produced for its customers. To meet customer demand, Company A must maintain a considerably low lead time and an adequate level of inventory. To reduce lead times and non-value-added (NVA) activity times the warehouse operations, especially in inbound processes at an SME Manufacturing Facility, this research intends to analyze the impact of implementing lean manufacturing. Lead time and NVA time for the current operation are 9045 minutes and 275 minutes, respectively. Value stream mapping (VSM) is selected as the tool to identify process waste and launch an improvement strategy to achieve the research objective. The creation of the current state mapping and evaluation of the future state mapping will be the first steps in the implementation approaches. The proposed improvements include creating and implementing a VBA application as a data entry form for supplier shipment booking, an information system for material reception, an operational report, and remodeling the staging area by incorporating a gravity roller. The lead time is decreased by 5% as the improvement strategy is put into action, while the NVA time is dramatically decreased by 47.27%. The research conclusions are thus recognized as noteworthy and beneficial in advancing the understanding of the role of value stream mapping methods in improving inbound warehouse performance in SMEs. Â
Copyright (c) 2023 Putu Aulia Pranagita, Hery Hamdi Azwir
Assessing the Awareness of Engineering Students at President University towards Massive Open Online Course (MOOC)
Pandemi COVID-19 berdampak pada banyak aspek termasuk sektor pendidikan tinggi global. Semua kuliah harus dilakukan secara online. Platform MOOC terutama digunakan untuk mendukung sistem pembelajaran online karena dapat diakses secara online (terbuka) dan memungkinkan banyak peserta (massive) untuk belajar dari universitas terkemuka di seluruh dunia. Situasi pandemi COVID-19 di President University mirip dengan universitas lain. Untuk mendongkrak aktivitas pembelajaran online, President University menjalin kerjasama dengan Coursera dan memberikan kursus gratis yang sudah ada selama lebih dari 2 tahun. Perlu menilai apakah mahasiswa menggunakan fasilitas yang disediakan oleh universitas atau tidak dengan mengukur tingkat kesadaran terhadap MOOC. Tujuan utama dari penelitian ini adalah untuk menilai kesadaran mahasiswa teknik di President University terhadap MOOC. Pengumpulan data dilakukan dengan menggunakan kuesioner. Langkah-langkah dalam melakukan penelitian ini adalah merancang kuesioner, melakukan cluster sampling, menyebarkan kuesioner, statistik deskriptif, uji validitas dan reliabilitas, analisis clustering, analisis tabulasi silang, dan membuat kesimpulan. Responden dikelompokkan menjadi tiga kelompok berbeda berdasarkan jawaban mereka dalam pertanyaan skala Likert. Cluster 1 memiliki kesadaran MOOC terendah (tidak pernah mengikuti kursus, menggunakan 1 platform), cluster 2 memiliki kesadaran MOOC sedang (tidak pernah mengikuti kursus tetapi mengetahui setidaknya 1 platform), dan cluster 3 memiliki kesadaran MOOC tertinggi (diambil 1- 3 kursus, menghabiskan setidaknya 1 jam untuk kursus).
Copyright (c) 2023 Anastasia Lidya Maukar, Jean Hillary P Korua
Feasibility Analysis of “KAOSIâ€ the Graphic Art T-shirt
A business feasibility analysis is necessary to conduct to determine whether a business is viable and to enhance its quality and quantity. The analysis included (1) technical, (2) marketing, (3) management and organizational, and (4) financial. This study uses a business feasibility analysis to determine the viability of new MSME businesses named KAOSI. Based on the research conducted, it has been determined that the KAOSI is considered feasible because it meets the following criteria: (1) technical aspect, such as operating in a strategic location; (2) marketing aspect, such as having a unique selling proposition that is not currently held by any competing products; (3) financial aspect, KAOSI has a business NPV value of IDR 4,158,829.4, an IRR value of 40,9%, a PP value of 1.79 years, and a PI value of 1.98, which indicates that this business is financially feasible. However, in terms of management and organization, only the management aspect can be met by KAOSI, its organizational structure is deemed impractical due to its management's extensive responsibilities.
Copyright (c) 2023 Ayu Anggraeni Sibarani, Indro Prakoso, Dewi Tria Setyaningrum, Sri Ambarwati
Impact of Cripple Part Storage Management System Improvement on the Overall Equipment Effectiveness in an Automotive Spare Part Manufacturing Company
Improving productivity and performance is a continuous process in all manufacturing companies. Since a product fabrication process mostly consists of many production and work steps, there is always an opportunity for small improvement. If conducted consistently and continually, a series of small improvements can yield a considerable increase in overall productivity and performance. In this paper, the effort undertaken in an automotive spare part manufacturing company to reduce downtime due to the dandori process is presented. Dandori is the installation or setup required between the production of two different spare part types. The setup includes stocking in incomplete lots of product, or the cripple parts, of one type and stocking out the cripple parts of the other. The existing dandori process consisted of 12 steps and required 190.2 seconds. The development of a storage management system was proposed to reduce the downtime required to fill the production check sheets and to find the correct drawer in the storage room. The new dandori process consists of 19 steps and requires 140.4 seconds. The manual check sheet filling was replaced with QR code scanning and data input on a computer, while the manual finding of the correct drawer was assisted by the LED indicators. Production data for the duration 4 months before and 4 months after the improvement was analyzed. The availability rate of the process increases from 84.87% to 89.34%, and the overall equipment effectiveness (OEE) increases from 73.11% to 78.37%. The obvious increases encourage further continuous improvement cycle in the company.
Analisis Model Bisnis Menggunakan Pendekatan Kanvas pada Usaha Mikro Alpukat dalam Konteks Produk Segar
Usaha mikro Nusantara, yang fokus pada distribusi dan penjualan buah alpukat sejak Juli 2021, menghadapi masalah penurunan penjualan yang signifikan sebesar 31% pada periode September hingga Desember 2022. Masalah tersebut dipicu oleh model bisnis saat ini yang belum optimal, keterbatasan armada distribusi, fluktuasi kualitas buah, dan kesadaran merek yang lemah. Penelitian ini bertujuan untuk mengidentifikasi model bisnis aktual, menganalisis faktor internal dan eksternal perusahaan, serta merumuskan model bisnis usulan yang tepat untuk meningkatkan volume penjualan. Metode penelitian menggunakan pendekatan kualitatif dan kuantitatif melalui analisis Kanvas Model Bisnis (Business Model Canvas), evaluasi SWOT, serta pengolahan matriks Evaluasi Faktor Internal (IFE) dan Eksternal (EFE). Data dikumpulkan melalui wawancara pemilik dan penyebaran kuesioner kepada 84 responden pelanggan, 15 reseller, dan 3 supplier. Hasil skor koordinat dipetakan menggunakan Matriks Internal-Eksternal (IE).Hasil analisis menunjukkan Nusantara memiliki posisi internal kuat dengan skor IFE 3,06 dan posisi eksternal cukup kuat dengan skor EFE 2,71. Berdasarkan Matriks IE, posisi perusahaan berada pada Sel IV yang merekomendasikan strategi Tumbuh dan Bina (Grow and Build). Strategi usulan diimplementasikan ke dalam sembilan elemen BMC baru, berfokus pada penetrasi pasar dan pengembangan produk. Langkah konkret yang direkomendasikan meliputi diversifikasi produk olahan alpukat, pembuatan website, perluasan wilayah pasar ke Jabodetabek, peningkatan intensitas promosi digital, penambahan supplier, peningkatan kualitas kemasan, serta penambahan staf pelayanan dan armada pengiriman mandiri guna mengatasi kendala keterlambatan distribusi.
Copyright (c) 2026 Hans Nicholas, Indah Victoria Sandroto http://creativecommons.org/licenses/by-nc/4.0
Optimasi Penjadwalan Kerja Tenaga Penjual di Toko Ritel Menggunakan Programa Linier
Tuntutan konsumen yang semakin tinggi, pilihan produk yang semakin beragam, dan jalur distribusi yang semakin kompleks menjadi tantangan bagi industri ritel untuk bertumbuh dan bertahan. Kualitas layanan menjadi kunci untuk memenangkan persaingan di toko fisik. Keterbatasan sumber daya dan margin keuntungan harus dikelola secara optimal dengan mengefisiensikan biaya operasional dan mengefektifkan layanan yang diberikan. Studi ini dilakukan di sebuah jaringan toko ritel sepeda “Rodalinkâ€ yang berlokasi di Bandung. Ketersediaan layanan diukur dari bulan Agustus hingga Desember 2021. Pengamatan menemukan pola dinamis pada tingkat kunjungan konsumen untuk setiap hari di setiap rentang waktunya. Kondisi empiris tersebut mendorong perlunya pengaturan ulang jadwal kerja tenaga penjual agar dapat menghasilkan ketersediaan layanan paling optimal. Setiap konsumen harus dapat dilayani setidaknya oleh seorang tenaga penjual. Programa linier diterapkan dengan fungsi objektif berupa persamaan yang meminimasi biaya tenaga kerja serta kendala fungsionalnya adalah banyaknya konsumen yang berkunjung dan jam kerja karyawan. Hasil iterasi merekomendasikan penambahan 2 orang tenaga penjual agar dapat mencapai standar kualitas layanan yang diinginkan. Tingginya tingkat kunjungan konsumen di hari tertentu diantisipasi dengan mempekerjakan tambahan 1 orang sebagai tenaga kerja harian lepas. Secara total, biaya tenaga kerja menjadi lebih sedikit daripada harus membayar upah lembur namun memperbesar peluang konsumen yang dapat dilayaninya.
Designing the Digital System Using SDLC Methodology to Increase Inspection Efficiency at PT. LV
PT. LV is a manufacturing company focusing on precision plastic injection molding and electronic assembly. One of PT. LV manual systems is the Inspection Check Sheet (ICS). There is an indication of wrong decision-making regarding the inaccurate data of characteristics dimension of a part which causes the part to be detained. Based on the results of observations from June to August 2023. The number of inaccurate data at the ICS has 13 cases, with the total quantity of retained parts is 6496. There are several disadvantages if it is still done by manually. First, the average time consumed for the current system process takes 2 minutes and 45 seconds. Second, found seven unnecessary repetitive activities. Third, the approval process by Quality Control Supervisor takes once a week. Therefore, this study aims to design a digital ICS system using System Development Life Cycle methodology in order to make inspection check sheets more efficient. Then, the implementation of digital ICS system held from October to December 2022. In its implementation is successfully reducing the number of inaccurate data and retained part significantly to become 0 cases. The impact of designing digital ICS system reduces time consume 72,34% become 46 seconds. There are no more repetitive data input activities. Last, an approval process is done digitally using the digital ICS system.
Copyright (c) 2023 Ahmad Tia Jafar, Andira Taslim, Athina Sakina Ratum
Implementasi Smart Furniture pada Desain Meja dan Kursi Taman
Meja dan kursi taman merupakan sebuah elemen street furniture yang selalu berada di tengah ruang terbuka yang berfungsi sebagai pelepas penat orang-orang di sekitarnya. Semakin pesatnya perkembangan desain furnitur saat ini memunculkan tren desain furnitur yang pintar atau smart dengan menyisipkan teknologi terkini. Sudah banyak berbagai bentuk meja dan kursi taman saat ini. Namun, secara fungsional kebanyakan hanya berfungsi sebagai tempat duduk dan meletakkan benda saja. Maka dari itu, dilakukan inovasi untuk merancang sebuah meja dan kursi taman yang mempunyai fungsi lain dari fungsi utamanya dengan memadukan teknologi solarcell. Solusi dari permasalahan yang ada yaitu adanya penggabungan atau penambahan fungsi pada suatu furnitur. Dengan demikian dapat dilakukan penggabungan fungsi utama meja dan kursi taman dengan fungsi benda lain yaitu solarcell. Melalui permasalahan di atas, perancangan produk diorientasikan pada fungsi utama meja dan kursi taman dengan fungsi pendukung yang mampu memenuhi aktivitas pengguna dari segi kepraktisan dan juga ergonomis. Metode yang digunakan dalam pengembangan produk meja dan kursi taman ini menggunakan metode design thinking. Dalam uji prototipe, dari hasil survei terhadap 33 orang dengan 10 atribut pengujian fungsi dan kenyamanan, mayoritas responden “sangat setujuâ€ bahwa meja dan kursi taman hasil penelitian ini fungsi yang sesuai terhadap konsep smart furniture dan ergonomis.
Copyright (c) 2023 Gilar Sundara, Galih Prakoso, Zain Amarta, Alfanadi Agung Setiyawan, Niki Etruly, Noni Kusumaningrum