railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Simple Stress and Strain Stress and Strain
The relationship between true strain (εT) and engineering strain (εE) in a uniaxial tension test is given as
1
εE = ln (1 - εT)
2
εE = ln (1 + εT)
3
εT = ln (1 + εE)
4
εT = ln (1 - εE)