Entropy Based Fatigue, Fracture, Failure Prediction and Structural Health Monitoring

• Other Authors: Basaran, Cemal (Editor)
• Format: Electronic Book Chapter
• Language: English
• Published: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute 2021
• Subjects: History of engineering & technology; fatigue; system failure; degradation analysis; entropy generation; stress strain; plastic strain; thermodynamics; health monitoring; copula entropy; measure; dependence; multiple degradation processes; physics of failure; prognosis and health management; entropy as damage; acoustic emission; information entropy; thermodynamic entropy; Jeffreys divergence; MaxEnt distributions; fatigue damage; low-cycle fatigue; satellite; dynamic health evaluation; fuzzy reasoning; entropy increase rate; creep strain; damage mechanics; metallic material; mechanothermodynamics; tribo-fatigue entropy; wear-fatigue damage; stress-strain state; limiting state; damage state; dangerous volume; interaction; irreversible damage; degradation-entropy generation theorem; dual-phase steel; fatigue crack growth rate; spectrum loading; entropy; unified mechanics; Ti-6Al-4V; medium entropy alloy; deformation twinning; dislocation slip; surface nano-crystallization; shot peening; n/a
• Online Access: DOAB: download the publication; DOAB: description of the publication

Traditionally fatigue, fracture, damage mechanics are predictions are based on empirical curve fitting models based on experimental data. However, when entropy is used as the metric for degradation of the material, the modeling process becomes physics based rather than empirical modeling. Because, entropy generation in a material can be calculated from the fundamental equation of thematerial. This collection of manuscripts is about using entropy for "Fatigue, Fracture, Failure Prediction and Structural Health Monitoring". The theoretical paper in the collection provides the mathematical and physics framework behind the unified mechanics theory, which unifies universal laws of motion of Newton and laws of thermodynamics at ab-initio level. Unified Mechanics introduces an additional axis called, Thermodynamic State Index axis which is linearly independent from Newtonian space x, y, z and time. As a result, derivative of displacement with respect to entropy is not zero, in unified mechanics theory, as in Newtonian mechanics. Any material is treated as a thermodynamic system and fundamental equation of the material is derived. Fundamental equation defines entropy generation rate in the system. Experimental papers in the collection prove validity of using entropy as a stable metric for Fatigue, Fracture, Failure Prediction and Structural Health Monitoring.