Recommended fracture toughness for ship hull steel and weld. J.D.G. Sumpter and A.J. Caudrey. Marine Structures, 1995, 8(4), 345--357.

Rather than the use of empirical derivation, more quantitative guidelines based on dynamic fracture mechanics testing is suggested. A miniumum toughness of 125 MPam1/2 at 0 degrees C and a loading rate of 104 MPam1/2/s is proposed, which can be translated to a Charpy requirement of FATT below 0 degrees C with some loss of precision. 14 refs.

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