Question

Hi, Wilson Sign Out Course Home <Assignment_3A Problem 3.5 3 of 10 Part A A Review The stress-strain diagram for a steel alloy having an original diameter of 0.8 in and a gage length of 5 in is shown in the figure below (Figure 1). The specimen is loaded until it is stressed to 70 kesi Determine the approximate amount of elastic recovery. Express your answer to three significant figures and include appropriate units. Amount of Elastic recovery- Value Units Submit Previous Answ Best Answer X Incorrect: Try Again: 5 attempts remaining Figure Part B (ks) Determine the increase in the gage length after it is unloaded Express your answer to three significant figures and include appropriate units. RÀ • • a ? T Permanent elongation - .094 • in Submit Previous Anser Best Answer * Incorrect: Try Again: 6 attempts remaining 6.OS PM RADOX 10/17/2019

Answer 1

Here we can calculate these parts using stress and strain curve, and finding modulus of elasticity,

And By plugging stress and strain value in in expressions to get final result.

given, diameter = 0.8 in, gange length = sin Ansi- and from stress-strain carve, n e Stress=0= 40 KSP Strain = t = 0.004 in in i Es Slobe (modulus of elasticity) = yoki 40x10 mm so o elastic recovery time - for Stress=r=90ksi E = 70 - E 1.75%10 to 40x103 in in 6 Calculate the permanent set! - Ep= Di 0.08 - 1.75010 3 = 0.07825 increase in gause length after unload- AL= Ep L = 0.0782585 AL = 0.391 in) I Anu