Author: Mr. A. Yeswanth, CH. Mahesh, CH. Ram Sandeep, M. Trimurtulu, P. Satya Teja
Doi: https://jmeb.2026.v11.i01.pp69-82
Abstract:
Turbine blades operate under extreme thermal and mechanical loading conditions, making them highly susceptible to various failure mechanisms. Failures in turbine blades can lead to severe performance degradation, costly downtime, and catastrophic system breakdowns. This study presents a comprehensive failure analysis of turbine blades from thermal, mechanical, and material perspectives using numerical and analytical approaches. Finite element–based thermal, static structural, modal, and harmonic response analyses are carried out to evaluate temperature distribution, stress concentration, deformation behaviour, and vibration characteristics of a turbine blade. The results indicate that high cycle fatigue driven by vibrational stresses, combined with thermal gradients and material degradation, is a dominant failure mechanism. The study highlights critical regions prone to crack initiation and provides insight into improving turbine blade reliability through optimized design and
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