Question

Select the most suitable material from the table that can be used to manufacture jet turbine blades under the following conditions:

a. The jet turbine rotates at a velocity of 30,000 rpm.

b. The Turbine disc is 52.5 cm, the cross sectional area is 15 cm2, and the length is 10cm.

Material Allowable stress GPa 3.8 6.1 6.1 6.5 6.1 Densi Ductility Cost gim cc Adamantina Chromanit Duracon Stumatalo Framion 8.3 8.9 9.0 35% 5% 3390 35% 33% 4,000 2,000 4,000 3.500 9,000 9.0

Answer 1