A manufacturer wishes to choose between two ceramics for a certain application. Data for the two...

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Mechanical Engineering

A manufacturer wishes to choose between two ceramics for acertain application. Data for the two ceramics tested underidentical conditions were as follows:

CeramicMean Fracture StressWeibull Modulus
A500 MPa12
B600 MPa8

The service conditions are geometrically identical to the testconditions and impose a stress of 300 MPa. By constructing Weibullgraphs with S = 1/2 for mean fracture stress or any other method,decide which ceramic will be more reliable and compare theprobabilities of failure at 300 MPa. At what stress would the twoceramics give equal performance?

Answer: Stress for equal performance = 349 MPa

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