Communities in PRCR
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- Colecciones de la Albizu University
- Colecciones digitales de Atenas College
- Colecciones de los Centros Sor Isolina Ferré
- Materiales utilizados para la certificación.
Recent Submissions
Development of an Educational and Awareness Website Cybersecurity Learning System
(Polytechnic University of Puerto Rico, 2026) Malavé Tripari, Uriel; Cruz, Alfredo
Conventional cybersecurity awareness approaches usually lack sufficient interactivity and practicability, making users susceptible and prone to cyberattacks. To overcome this challenge, this project developed the Cybersecurity Learning System to meet emerging demands for cybersecurity education due to an increase in cyberattacks based on exploiting human errors, such as phishing, social engineering, malicious links, and deception. This web-based educational system was designed and implemented using technologies such as HTML, CSS, JavaScript, PHP, and MySQL. The website includes educational content modules, interactive exercises, feedback, and visual learning capabilities based on cybersecurity risks, such as phishing, malicious attachments, social network scams, pretexting, and tailgating awareness. The web system was tested to determine its capability in providing cybersecurity education, ease of use, and accessibility. It was found that the platform has effectively provided a structured and user-friendly approach to learning about cybersecurity concepts.
Dielectric Failures Reduction in the Main Stator Cell: A Mechanical and Process Engineering Approach
(Polytechnic University of Puerto Rico, 2026) Figueroa Zayas, Brian; Noriega Motta, Julio A.
Dielectric failures account for approximately 65% of total defects in the Main Stator Cell of an aerospace manufacturing facility. This study identifies mechanical interaction during manual forming operations as the primary root cause, rather than purely electrical phenomena. Contact mechanics analysis using the Hertzian model reveals that conventional steel pliers generate contact pressures of approximately 1.10 GPa, far exceeding enamel insulation tolerance. A dedicated Delrin forming tool reduces contact pressure by 99.5%, friction forces by 75%, and bending stress by 75.2%. Complementary process improvements—including standard work updates, dedicated dielectric test operations, and operator training—achieved a 37% reduction in Scrap, Rework, and Repair (SRR) costs and a 30% reduction in Parts Per Million (PPM) defect rate, surpassing the established 35% SRR target.
Experimental Material Characterization for Mechanical Properties Validation for 304L Stainless Steel
(Polytechnic University of Puerto Rico, 2026) Saavedra Hernández, Luis F.; Noriega Motta, Julio A.
This graduate project presents an experimental characterization of the mechanical properties of aerospace-grade 304L stainless steel plate. Non-welded base-metal specimens and TIG-welded specimens were prepared and tested in accordance with ASTM E8 at room temperature and under simulated cryogenic conditions achieved through CO₂ cooling. The investigation focused on yield strength, ultimate tensile strength, and elongation, with particular attention to the effects of welding and low-temperature exposure. Austenitic stainless steels such as 304L are widely used in cryogenic applications because they retain excellent ductility at very low temperatures. The results obtained in the PUPR Materials Laboratory provide original laboratory data that support quality-assurance practices for safety-critical components such as cryogenic propellant tanks and hydraulic systems in aerospace systems.
Developing a Tool to Identify At-Risk Tasks and Critical Decisions Points During Product or Process Introduction
(Polytechnic University of Puerto Rico, 2026) González Sánchez, Antoniella; Nieves Castro, Rafael A.
Process and product introduction are essential aspects of a company's product list. Many steps are involved in performing a successful introduction or transfer. But some steps include some tasks that can be underestimated. The issue with these tasks is that, even when they are simple tasks, they can affect the whole project. Among the potential effects are budget or timeline impacts, delays, and unnecessary expenses. The tool's use aims to improve planning and readiness and minimize issues by providing clear, organized information for decision-making, requests for additional support, and project tracking. The tool to identify high-risk tasks during process and product introduction was developed using “Excel” by using dropdowns and formulas. The task is identified, and different impacts are evaluated to determine the risk level and suggested action. A real scenario was used to test the tool once implemented. The testing results confirmed that the tool can identify high-risk tasks, assess potential impacts, and suggest actions.
Optimizing Component Preparation Area’s PTS Visualization Tools for Enhanced Manufacturing Performance
(Polytechnic University of Puerto Rico, 2026) Gómez Rivera, Christian; Morales Morales, José Alberto
This Design Project presents the development and optimization of a Performance-to-Standard dashboard for monitoring manufacturing process performance. Traditional spreadsheet-based dashboards relied on manual data entry, lacked real-time integration, limiting the ability to identify process variability effectively. The proposed solution integrates data from multiple operational systems into a Power BI platform, enabling automated monitoring of key performance indicators such as Cycle Time Performance and Pass/Failed Cycles. The system enhances data visualization and supports real-time analysis of process efficiency across equipment, loads and production steps. Results demonstrate improved operational visibility, enhanced identification of variability and strong stakeholder acceptance. The implementation supports continuous improvement initiatives and establishes a scalable framework for data-driven monitoring in manufacturing environments.