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An aircraft wing made from an aluminium alloy has a plane-strain fracture toughn...

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An aircraft wing made from an aluminium alloy has a plane-strain fracture toughness of 30 MPa√m. Fracture results when the wing is subjected to a stress of 126 MPa as a result of an internal crack that resulted from a faulty fabrication procedure. What is the internal (2*a) crack length? Assume Y = 1. Supply 3 significant figures in your answer. /

'n Vliegtuigvlerk wat van 'n aluminium allooi gemaak is, het 'n vlak-rekbreuk-taaiheid van 30 MPa√m. Breuk ontstaan ​​wanneer die vlerk aan 'n spanning van 126 MPa onderwerp word as gevolg van 'n interne kraak wat voortgespruit het uit 'n foutiewe vervaardigingsprosedure. Wat is die interne (2*a) kraaklengte? Aanvaar Y = 1. Gee 3 betekenisvolle syfers in u antwoord.

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