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Question: in o23 4 name capitals name signature date wk...

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in o23 /4 Name (CAPITALS) Name (Signature ) Date: (Wk 11) Thursday 29h November 18 Question 2: Ceramics An advanced ceramic, sialon, has a tensile strength of 400 MN.m. A thin crack 0.25 mm deep is observed before a sialon part is tested. The part unexpectedly fails at a stress of 3 MN.m2 by propagation of the crack. Estimate the radius of the crack tip.
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