Introduction to Mechanical Properties and Terminologies

Lesson 3 of 8 • 1 upvotes • 13:48mins

Joel George

Basics of mechanical properties include a study about stress and strain, how are these terms defined theoretically as well as experimentally. The concepts of stress and strain are very much important in understanding the load versus elongation curves.The importance of tensile testing and the machine used to test the tensile properties of materials are also discussed. The size, shape and the loading condition for various specimens play an important role in interpreting the results of tensile testing. The fundamental difference between true stress and engineering stress, true strain and engineering strain are discussed in this lesson. The impact of overall area and instantaneous area for determining true and engineering stress and strain is significant. The graphical representation of stress versus strain considering to cases I.e. true stress and strain versus engineering stress and strain is plotted.