DEGRADATION




	*I - METALLIC COMPONENTS DEGRADATION: Irradiation* *Thermal loads fatigue* *Creep* *Cyclic loads fatigue* *Corrosion* *Corrosion under mechanical loads* *Erosion-Corrosion* *Fretting wear* *II - CONCRETE STRUCTURES DEGRADATION: ¨ Cracking* * *Concrete cracking in plastic condition (shrinkage, settling)* * *Pre-stressed concrete cracking (shrinkage, thermal loads, chemical attack, reinforced steel corrosion)* ¨ *Adverse environment effects:* * *Freeze-thaw cycles* * *Wetness and dry-out* * *Aggressive chemical attack* * *Embedded parts corrosion* * *Extreme environment conditions* * *High temperature effects* * *External pressure effects* * *Irradiation effects* *III - NON-METALLIC COMPONENTS DEGRADATION: ¨Electronic materials degradation (temperature, humidity, vibrations and radiation effects)* ¨*Polymers degradation* * *Temperature effects* * *Irradiation effects* * *Humidity, solid pollutants and electric field effects (erosion and carbonization)* * *Oils, fuels and solvent contact effects (adsorption and dissolving)* * *Ozone environment effects (cracking)* ¨ *Lube materials degradation - oils and lubricants* * *Contamination, oxidation and radiation effects (oxidation and change in properties)* ¨*Degradation of other non-metallic materials (resins, multi-layer plastic materials, protective coating, soluble glass)*