A metal rod, which is part of a remote manipulator assembly, is used for transferring components ...
A metal rod, which is part of a remote manipulator assembly, is used for transferring components between loadlocks in a high temperature processing facility. The rod material was selected so that it could sustain a tensile stress, σ, of 100 MPa at 650°C, Under these conditions, the steady state creep rate is 107s1. Recent modifications to the facility have now resulted in the rod, for 50% of the operating time, being subjected to a stress and temperature of 150 MPa and 700°C. Calculate the average creep rate, if it can be assumed that the metal creeps according to the equation: where ess is the steady state creep rate, A is a constant, n-8, 0 280 kJ mole1 and R- 8.31 J mole1 K-1 (hint: find the value of A)
A metal rod, which is part of a remote manipulator assembly, is used for transferring components between loadlocks in a high temperature processing facility. The rod material was selected so that it could sustain a tensile stress, σ, of 100 MPa at 650°C, Under these conditions, the steady state creep rate is 107s1. Recent modifications to the facility have now resulted in the rod, for 50% of the operating time, being subjected to a stress and temperature of 150 MPa and 700°C. Calculate the average creep rate, if it can be assumed that the metal creeps according to the equation: where ess is the steady state creep rate, A is a constant, n-8, 0 280 kJ mole1 and R- 8.31 J mole1 K-1 (hint: find the value of A)