Journal of Industrial Engineering and Education

Risk Mitigation Supply Chain of Non-Edible Coconut for Sustainable Bioavtur Raw Material

Mon, 22 Apr 2024 00:00:00 +0700

Coconut production in Riau province, especially Indragiri Hilir Regency is very abundant, but not all of it can be consumed by humans due to various reasons, whether it's due to management, falling rot from trees, aflatoxin fungus, and so on. This study aims to Mitigate Supply Chain Management Risks faced when non-standard coconuts are managed into SAF, especially in Indragiri Hilir Regency, Riau. The data analysis technique used in this study uses the Analytical Hierarchy Process (AHP). Furthermore, using a risk management model, namely the House of Risk (HOR) with the principle of FMEA (Failure Mode and Error Analysis). Based on the results of the research that has been done, the biggest risk based on FMEA calculations is that no law specifically regulates coconut. However, the solution that can be taken according to priorities is for the Government to conduct outreach and education programs for farmers about good and safe drying methods for copra. This is because the solution that can be resolved shortly is a problem related to Copra

Analysis of Reliability Centered Maintenance of Air Conditioning Facilities

Annisa Fadhila — Mon, 22 Apr 2024 00:00:00 +0700

The Engineering Faculty is one of the faculties that was established at Mulawarman University. Engineering Faculty provides air conditioning facilities in every room to support the thermal comfort of the room. Based on the current condition, it is known that there is no routine maintenance program for these facilities. A total of 236 AC units installed in each room are in good condition, decreased reliability conditions and in damaged condition (cannot be used at all). Previously, corrective maintenance was carried out, namely operating the machine until it broke down and then repairing or replacing it. Corrective maintenance is a poor maintenance strategy because it causes high operational costs, downtime and affects machine performance. There are several problems that occur in air conditioning facilities, namely the installed air conditioner does not have any effect, the air conditioner leaks, the air conditioner cannot be turned on, etc. Based on these problems, a Failure Mode Effect and Analysis (FMEA) analysis and Reliability Centered Maintenance (RCM) analysis were performed. FMEA analysis is used to determine the functional failures that occur in the air conditioning system and the failure rate based on the RPN value of the questionnaire. RCM analysis is used to determine the recommended maintenance actions for air conditioning components. The results of the FMEA analysis show that the critical components in the Engineering Faculty air conditioning facility are compressor components with an RPN value of 405, PCB control with an RPN value of 320, blower motor with an RPN value of 180, thermistor with an RPN value of 196 and capillary pipe with an RPN value of 216. The results of the RCM analysis determined maintenance actions for critical components, namely thermistor components using a time-directed (TD) action plan and compressor components, PCB control, capillary pipes and blower motors using a condition-directed (CD) action plan.

Design and Build Lighting Aids at Fingertips for Dentists

Mon, 22 Apr 2024 00:00:00 +0700

Teeth and the mouth are two body parts whose health is of utmost importance and require diligent care and attention. The overall health of the human body can often be assessed through the condition of the teeth and mouth. Prompt and accurate care and diagnosis by dentists can aid in this assessment process. However, in practice, adequate lighting within the mouth is often a challenge due to the perceived inadequacy of the light source. In this research, an intraoral lighting device has been developed as an alternative light source for dental examinations. This device is a compact, ergonomically designed mini-lamp that is attached to the dentist's fingertip, capable of illuminating the inside of the mouth optimally. The device was tested at the pediatric dental clinic of RSGM UGM Prof. Soedomo to receive feedback on the product development. The product has received significant enthusiasm from the medical staff in the dental clinic due to its practical, flexible design, and its ability to provide optimal lighting within the mouth.

Industrial Engineering Integrated Practicum Framework Design Based on ERP

Purwo Setiawan Setiawan, I Gusti Bagus Budi Dharma — Mon, 22 Apr 2024 00:00:00 +0700

The development of information technology requires companies to implement Enterprise Resource Planning (ERP) software to assist in managing company resource information. This has led to an increasing demand for graduates with knowledge and skills in ERP. Therefore, teaching and education on ERP have become highly important in higher education institutions. Industrial Engineering is a study program that can fulfill these needs. Within the Industrial Engineering study program, there is an integrated practicum course where students can learn case studies that closely resemble the systems used in companies. This paper provides a general overview of the current design of integrated practicum curriculum and ERP learning and proposes an innovative framework for integrated practicum courses in the industrial engineering study program by implementing ERP technology. The proposed framework outlines the activities, objectives, inputs, outputs, and flow of the practicum, as well as its relationship to ERP modules. The framework aims to assist the industrial engineering study program in designing a curriculum specifically for integrated practicum courses and providing students with practical experience aligned with standard ERP business processes. The proposed framework utilizes several Odoo modules, such as sales, purchase, inventory, manufacturing, surveys, and accounting. Testing is conducted by faculty members and teaching assistants to assess whether the ERP modules can be implemented in specific practicum scenarios and align with the practicum's objectives.

QFD Phases I and II on Walking Aid Case Study

Rosnani Ginting, Tirtayasa, Alfin Fauzi Malik , Rinaldi Silalahi — Fri, 26 Apr 2024 00:00:00 +0700

The development of the product is currently necessary in order for the product to be successful in the market. This article discusses the redesign of walking aid items as a response to the concerns and issues that users have with these products. Its goal is to supply tools that are both secure and suitable for the requirements of the consumer. Enhancements are made by the utilization of the integration of the Quality Function Deployment Phase 1 and Phase 2 techniques. During the first phase of QFD, client needs will be translated into technical qualities in order to optimize tool design. whereas QFD Phase II will generate priority part qualities for the purpose of accelerating the process of tool design improvement. As a consequence of this, the technical qualities that need to be fixed immediately are the design mobility and the convenience of use, and the features of the part that need to be enhanced almost immediately are the multifunction and the safety of the tool. It was possible to achieve improvements in the design of the foot therapy device by reducing the fundamental framework. After that, a foam armrest was installed, and rubber was used to replace the handrails. Wheel retention components, including as brakes and user seats, are also included in the new design of the vehicle.

Transportation Distances Reduction at Surabaya Distribution Center Using Anylogistix Software

Fri, 26 Apr 2024 00:00:00 +0700

The delivery method of finished goods by the company Surabaya Distribution Center is to deliver to one customer location (single drop), and the truck size used will be adjusted based on the demand. The company considers the single drop inefficient since the usage of small trucks is significantly higher than that of larger trucks. Therefore, it is essential to change finished goods previously delivered using small modes of transportation to large ones. Since it is impossible to control customer demand, it might be possible to increase truck size by combining several destinations into one truck (multidrop), which would shorten the transportation distance. The problem of determining the optimal route to reduce the delivery route distance by considering the vehicle capacity is included in the Capacitated Vehicle Routing Problem with Time Windows (CVRPTW), which can be solved using Anylogistix. Anylogistix software was selected as a software tool for applying the simulation modeling approach based on the functionality, accessibility, simplicity, and convenience of use, as well as the degree of suitability of the models to the conditions of reality. The simulation begins with selecting the appropriate type of simulation, inputting data, applying research assumptions, and verifying and validating until a verified and validated simulation is obtained. Through a systematic approach, the Anylogistix simulation can reduce the distance of the routes, initially 280,258.7 km, to 203,905.93 km (a 27.2% distance reduction). In addition, the results showed that the delivery of goods from small modes of transportation allocated to large modes of transportation was 181 shipments, with an optimal utilization of >70%.

Reducing Customer Churn for XL Axiata Prepaid: Factors and Strategies

Afifa Puspitasari, Nur Aini Masruroh — Fri, 26 Apr 2024 00:00:00 +0700

Understanding and mitigating customer churn is pivotal for companies, especially those operating with subscription models like telecommunications firms. This study focuses on XL Axiata Company, delving into the factors driving customer churn. The data used is from a questionnaire and focuses on consumers who have used prepaid cards and are considered churn customers, while customers who continue to use cards are termed non-churn customers. Using machine learning algorithms such as logistic regression, ANN, and XGBoost, the data is applied in the prediction step of customer churn classification. The best machine learning method's coefficient results will be followed by strategy analysis using the QSPM method and risk analysis of the loss distribution using the CVaR method. According to the findings of this study, ANN is the most accurate machine learning method, and network factors are the most important factors in customer churn, followed by level of interest in VAS products, company services, failed calls, customers who have made calls to call service, package prices that are fairly expensive, and ads that are less attractive. The QSPM strategy study indicated an AI/ML approach to examine the bundling promo with VAS products, taking into account the impact on customer churn and implementation costs. The CVaR risk analysis results reveal that the VAS products that can be prioritized in the VAS promo plan are bundling products in the form of primary quotas and online games, which are more profitable than bundling with video streaming or chatting.

Design Air Conditioner Maintenance SOP Based on ISO 9001:2015

safitri kholifah, Farida Djumiati Sitania, Yudi Sukmono — Sun, 28 Apr 2024 00:00:00 +0700

Indonesia is a country with a tropical climate. While the dry season comes, the temperatures become very high, which impacts the increase in air conditioner (AC) usage. With the increasing use of air conditioners, air conditioner facilities need to be maintained regularly to keep their functions and machines working well for a long period of time. The implementation of a quality management system, ISO 9001:2015, is the best decision for an organization to develop initiatives. The data required in this research is the quantity of air conditioner along with the description of its condition, the arrangement of the interview protocol, the results of interviews with Mr. Amin, the air conditioner technician, and the entire staff of majors at the Faculty of Engineering, Mulawarman University. Based on the analysis, there are 3 SOPs that are compiled, such as SOP of Air Conditioner Maintenance Requests, SOP of Air Conditioner Maintenance, and SOP of Air Conditioner Monitoring. The parties involved are the user/work unit, internal technician, external technician, general and financial sub-coordinator, and vice dean II as the person in charge. There are several stages in each SOP: SOP of Air Conditioner Maintenance Requests has 7 work steps, SOP of Air Conditioner Maintenance has 13 work steps, and SOP of Air Conditioner Monitoring has 5 work steps. In the entire range of air conditioner maintenance activities, several forms are required, such as the Air Conditioner Maintenance Request, Test, and Evaluation Form; the Air Conditioner Repair Report Form, Test, and Evaluation Form; and the Air Conditioner Monitoring Report Form.

Redesigning Warehouse Layout PT XYZ Using Class-Based and CRAFT Methods

Putri Monika Pratami, Sutanto, Rahul Prima Putra, Harummi Sekar Amarilies — Sun, 28 Apr 2024 00:00:00 +0700

PT XYZ has a warehouse that serves as a Temporary Storage Area (TPS) for imported and exported goods. Currently, the import area of the warehouse has a rack capacity of 2,940 pallet positions, consisting of 14 single-deep racks and 24 double-deep racks. However, the number of goods received and stored is only 867 pallets. The random placement system of imported goods complicates the consignee's retrieval process during system failures. The utilization of racks in the import warehouse is suboptimal due to the significant unoccupied space that lacks pallets. At the same time, there is a necessity for additional specialized areas to accommodate large-dimensional goods. This study utilizes the class-based storage policy to categorize goods based on their characteristics using the CRAFT (Computerized Relative Allocation of Facilities Techniques) method, one of the methods for obtaining a warehouse layout that matches the needs and dimensions available. This research results in the classification of three main classes: Class A represents 77% of consignees with over 4 pallets, while Class B and C account for 15% and 8%, respectively, with a total requirement of 867 pallets. After rearranging the rack layout in the warehouse using the CRAFT method, the space utilization reaches 67.53%, which is not far from the initial condition. Meanwhile, rack utilization increases to 93.83% from the initial 31.45%, resulting in a new area to accommodate large-sized goods and business expansion, totaling 505.44 m², or approximately 9.5% of the total imported goods area.

CNC Parameter Optimization for Leather Batik Production

Amalia Fitri Mustafida — Sun, 28 Apr 2024 00:00:00 +0700

Batik, recognized as an Intangible Cultural Heritage for Oral and Non-material Culture by UNESCO, continues to attract interest due to its diverse techniques and designs. The demand for batik has expanded beyond fabric to include other mediums such as leather. However, the process of creating batik on leather requires a considerable amount of time, leading to a decline in the number of leather batik craftsmen over time. Therefore, the importance of applying technology in leather batik-making becomes increasingly urgent. One of the technological advancements in batik-making is the use of Computer Numerical Control (CNC) machines. This study aims to find the optimal parameters for a CNC Batik machine in leather batik production using goat leather material. Several parameters were analyzed in this study, including feedrate, wax temperature, and the type of wax used in the batik process. The Taguchi method was applied, utilizing an Orthogonal Array L9 (3³) design and Grey Relational Analysis (GRA). The results of this study indicate that the optimal combination of parameters for the batik process on leather using CNC batik machines is achieved with a feedrate of 400 mm/minute, a temperature of 80°C, and a wax viscosity of 39.30.