An NDT (non-destructive) examination of a steel component reveals the presence of a 5-mm-long edge crack. If plane-strain conditions prevail (Kıc = 75 MPam12), what would be the residual service lifetime of the steel part if it were subjected to repeated stresses of 400 MPa? da = 4 x 10-37 AK* NP If the next inspection procedure is scheduled in 6 months, should the component be replaced now or retained in service, given that the stresses fluctuate every 4 hours?

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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6. An NDT (non-destructive) examination of a steel component reveals the presence of
a 5-mm-long edge crack. If plane-strain conditions prevail (Kıc = 75 MPam12), what
would be the residual service lifetime of the steel part if it were subjected to repeated
stresses of 400 MPa?
da
= 4 x 10-37 AK*
dN
If the next inspection procedure is scheduled in 6 months, should the
component be replaced now or retained in service, given that the stresses
fluctuate every 4 hours?
Transcribed Image Text:6. An NDT (non-destructive) examination of a steel component reveals the presence of a 5-mm-long edge crack. If plane-strain conditions prevail (Kıc = 75 MPam12), what would be the residual service lifetime of the steel part if it were subjected to repeated stresses of 400 MPa? da = 4 x 10-37 AK* dN If the next inspection procedure is scheduled in 6 months, should the component be replaced now or retained in service, given that the stresses fluctuate every 4 hours?
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