Sharif University of Technology Scientia Iranica 1026-3098 Articles in Press 2025 01 13 A novel vibration-analysis based reliability quantification model for flexible coupling hub subjected to misalignment 23792 10.24200/sci.2025.64482.8965 EN Hussain VMS Department of Mechanical engineering, NIAMT, Ranchi - 834003, India Azhar Equbal Faculty of engineering and Technology, Department of Manufacturing Engineering, Jamia Millia Islamia, New Delhi - 110025 Md. Israr Equbal Mechanical Engineering Section, University Polytechnic, Aligarh Muslim University, Aligarh Zahid A Khan Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India I. A. Badruddin Department of Mechanical Engineering, College of Engineering, King Khalid University, Asir - Abha 61421, KSA Sarfaraz Kamangar Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Asir, Saudi Arabia Journal Article 2024 06 04 In this research paper, a novel real-time experimental reliability model is proposed, and system vibration signals are utilized to investigate and mitigate the impact of misalignment on components in rotor systems. To quantify reliability and comprehend the intricate relationship, we introduce modified design equations and employ a simulation-based methodology in the stress-strength interference approach. Additionally, we propose a framework for establishing safe and critical thresholds for parallel misalignment and rotational speed, aiming to meet specified reliability targets for the flexible coupling hub. The vibration analysis and subsequent illustration of the model in this research work shows that the reliability of the coupling is start deteriorating (at 95 Hz) much before the first critical speed (150 Hz) of the test-setup. Thus, this model proves effective in industrial rotor systems for preemptive maintenance tasks and manage misalignment levels among components designed for specific rotational speeds. https://scientiairanica.sharif.edu/article_23792_90f4ad46b1865a69b876d2915cd018b0.pdf