Structural steel with a fracture toughness

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Reference no: EM13713172

A structural steel with a fracture toughness of 60 MPa(m^1/2) has no surface crack larger than 3.5 mm in length. By how much (in %) would this largest surface crack have to grow before the system would experience fast fracture under an applied stress of 420 MPa?

Reference no: EM13713172

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