Note: D. = 1.374 Station Input diameter D-1 Output Diameter D HRB scale % ACW incremental cold working = (D-DVD/2*100 Cumulative %CW at the end of Incremental station - True strain (D.D /D.? *100 4g-In(D2/D) Where, i-1,2...7 Cumulative true strain = In(D./D) where 11.2...7 1 1.374 1.318 118 2 1.318 1.279 120 3 1.279 1.242 122 4 1.242 1.216 124 5 1.216 1.2 126 6 1.2 128 1.187 1.171 7 1.187 129 Questions 1- Plot the Hardness verses Cumulative %CW 2- State the observed trend between the cumulative cold working and Hardness, and the reason for this trend. 3. Plot the Cumulative true strain verses Cumulative %CW. Explain the trend you observe