a 2. A tank which operates under a stress of 620MPa 18 known to contain edge cracks that grow at a rate of Sum /month. T
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a 2. A tank which operates under a stress of 620MPa 18 known to contain edge cracks that grow at a rate of Sum /month. T
a 2. A tank which operates under a stress of 620MPa 18 known to contain edge cracks that grow at a rate of Sum /month. The fracture toughness of matertal from which the tank made is 48 Ma vm. The Geoinetry factor (Y) of the specimen is 1. A proof-test for the duration of the tank is scheduled. Calculate the miminum stress (in MPa) that should be used in the proof-test if it is desired that the tank should operate safely for 1 year,
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