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A steel engine component is found to creep at its normal operating temperature, with a steady-state creep-rate stress exponent of n= 3.3. If the stress

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A steel engine component is found to creep at its normal operating temperature, with a steady-state creep-rate stress exponent of n= 3.3. If the stress experienced by the component in service is increased from 64 MPa to 152 MPa, by what factor would the strain-rate increase? [Enter your answer to 2 decimel places)

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