question: Explain crack inspection on Turbine blades
Visually inspect for stress rupture cracks on turbine blades leading and trailing edges.
check for minute hairline cracks at right angles to the blade length.
Check for turbine blade creep.
Check for nipping of the trailing edge.
check for pitting, metal deposits, erosion and heat damage.
check signs of gas leaks across shroud indicted by streaks.
