(Solved): [NOTE P=111]  A square parallel key can be made of AISI 1020 Carbon Steel with a yield stress ...

[NOTE P=111] 

A square parallel key can be made of AISI 1020 Carbon Steel with a yield stress of 350 MPa or AISI 1040 Carbon Steel with a yield stress of 490 MPa and is designed for a gear to be mounted on a customised shaft of 150 mm in diameter. The gear transmits torque of 3,000 N-m and has a hub length of 125 mm. The design factor is chosen as 2.0 + 0.P and the width of the key is 25 mm. The customised shaft has a diameter of 50 mm. P is the last three digits of your student ID. Specify the keys using two materials and explain which material should be recommended in such a design scenario. Econo You may use the following equations: T D/2(WL) T = ?= L = L= 47 DLH 27 T DW 4T ? DH -Keyway Figure 3: Key, Gear and Shaft Key