A novel vibration-analysis based reliability quantification model for flexible coupling hub subjected to misalignment

VMS, Hussain; Equbal, Azhar; Equbal, Md. Israr; Khan, Zahid A; Badruddin, I. A.; Kamangar, Sarfaraz

doi:10.24200/sci.2025.64482.8965

A novel vibration-analysis based reliability quantification model for flexible coupling hub subjected to misalignment

Articles in Press

Document Type : Research Article

Authors

Hussain VMS ¹

Azhar Equbal ²

Md. Israr Equbal ³

Zahid A Khan ⁴

I. A. Badruddin ⁵

sarfaraz kamangar ⁶

¹ Department of Mechanical engineering, NIAMT, Ranchi - 834003, India

² Faculty of engineering and Technology, Department of Manufacturing Engineering, Jamia Millia Islamia, New Delhi - 110025

³ Mechanical Engineering Section, University Polytechnic, Aligarh Muslim University, Aligarh

⁴ Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India

⁵ Department of Mechanical Engineering, College of Engineering, King Khalid University, Asir - Abha 61421, KSA

⁶ Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Asir, Saudi Arabia

10.24200/sci.2025.64482.8965

Abstract

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.

Keywords

Reliability

Rotor systems

Flexible-coupling

Misalignment

Vibration analysis

Stress-Strength interference

Subjects