There is a need for rapid, accurate, cost-effective non-destructive evaluation (nde) of reusable flight hardware components and systems after each use to determine whether or not they have reached the end of their useful (safe,reliable) life. flaws and defects which influence this life include… More

Fracture mechanics life predictions require the determination of crack tip stress intensity factors for use in structural reliability assessments. stresses in metallic components resulting from rapid thermal pulsing can be highly complex and severe stress gradients of a tensile and compressive… More

An on-going threat to the residual lifetime and safety of boiling water reactors (bwrs) is intergranular stress corrosion cracking (igscc). a component of special concern in the recirculation inlet nozzle safe end (rinse). for example, within the last 2 years 30 out of 30 rinses are known to be… More