fatigue crack growth

[@mrinalkantidutta6757]

Nicely explained . Thank you!

[@elnaeemabdalla]

thank you I love how simple you made for this lesson

[@ABAQUSPOWER]

Thanks a a lot.

[@oualidchekoufi6592]

Thank's

[@Mech.Masters]

Is 'a' initial crack length or crack length at a particular instant?

[@MohammedAhmed-cj9kl]

In fracture mechanics, "a" usually represents the crack length at a particular instance, or sometimes they call it "r" depending on the approach of it. On the other hand the initial crack length is "ao" (a with subscripted o).

[@omargaber3122]

great

[@utkarshabhetuwal6911]

How to obtain final crack length 'af' where the fracture occurs?