Applications of Fracture Mechanics in Notch Crack Growth
This article discusses the use of fracture mechanics in analyzing crack growth at notches, specifically looking at transitional crack length examples with a crack effective length from tip to tip inclusive of
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About Applications of Fracture Mechanics in Notch Crack Growth
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Slide1applications of fracture mechanics to crack growth at NotchesS S l l 2c 2a L* L*: Transitional crack length Example: 2c = 5 mm, L* = 0.25 mm 2c = 25 mm, L* = 1.21 mm Numerical Solution: Newman 1971 For crack length l ≥ 10% c: crack effective length is from tip to tip!!! (including notch)
Slide2Variación de latensión con la distancia: Para r = 1.25 ro: Kt cae de 3 ->2
Slide3Consequences:For relatively small (5-10 % notch size) cracks at a hole or at a notch, the stress intensity factor K is approximately the same as for a much larger crack with a length that includes the hole diameter / notch depth. plane window Reading: Fatige and the Comet Airplane (taken from S. Suresh, Fatigue of Materials)
