Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
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Category > Management Posted 09 Oct 2017 My Price 5.00

large component

A large component is made of a steel for which Kc = 54 MN m-3/2. Nondestructive testing by ultrasonic methods shows that the component contains long surface cracks up to a = 2 mm deep. Laboratory tests show that the crack-growth rate under cyclic loading is given by

 

where A = 6 x 10-12 m (MN m-3/2)-3. The component is subjected to an alternating stress of range D

about a mean tensile stress of ∆σ/2. Given that ∆K = Y∆σ , estimate the number of cycles to failure.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 09 Oct 2017 02:10 PM My Price 5.00

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