A steel tension bar 8-mm thick and 50-mm wide with an initial single-edge crack of 10-mm long is subjected to a uniaxial stress s = 140 MPa.
i Determine the stress intensity factor KI. If KIC = 60 MPa , is the crack stable?
ii. Determine the critical crack size, and
iii. Determine the critical load.
[Take Y=1]
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