scholarly journals A Thermodynamic Entropy Approach to Reliability Assessment with Applications to Corrosion Fatigue

Entropy ◽  
2015 ◽  
Vol 17 (12) ◽  
pp. 6995-7020 ◽  
Author(s):  
Anahita Imanian ◽  
Mohammad Modarres
Keyword(s):  
Corrosion Fatigue ◽  
Reliability Assessment ◽  
Thermodynamic Entropy

Corrosion-Fatigue Structural Integrity Assessment Using a Thermodynamic Entropy Based Damage Approach

2015 ◽  
Author(s):  
Anahita Imanian ◽  
Mohammad Modarres
Keyword(s):  
Entropy Generation ◽  
Corrosion Fatigue ◽  
Structural Integrity ◽  
Degradation Mechanism ◽  
Health Assessment ◽  
Irreversible Thermodynamics ◽  
Integrity Assessment ◽  
Thermodynamic Entropy ◽  
Equilibrium Processes ◽  
Thermodynamic Forces

Using fundamentals of irreversible thermodynamics, with specific focus on entropy generation, this paper studies the structural integrity of degraded materials. All damage mechanisms share a common feature namely energy dissipation. Dissipation, as a fundamental measure for irreversibility in a thermodynamic treatment of non-equilibrium processes, is quantified by entropy generation. Based on the theoretical relationship between entropy generation and generalized thermodynamic forces and fluxes, the entropic damage is measured during a corrosion-fatigue degradation experiment. Life estimation of components, which were subject to complex corrosion-fatigue degradation mechanism, was then estimated through a proposed entropic-based prognostic framework. The performance of predictions was evaluated and compared with previous predictions in terms of the influence of additional features on components health assessment.

Sign in / Sign up

Export Citation Format

Share Document