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What does point D represent in the graph in FIGURE 1.12 below regarding the stress and strain? FIGURE 1.12 - NSC Mechanical Technology Welding and Metalwork - Question 1 - 2017 - Paper 1
Question 1
What does point D represent in the graph in FIGURE 1.12 below regarding the stress and strain? FIGURE 1.12
Worked Solution & Example Answer:What does point D represent in the graph in FIGURE 1.12 below regarding the stress and strain? FIGURE 1.12 - NSC Mechanical Technology Welding and Metalwork - Question 1 - 2017 - Paper 1
Step 1
What does point D represent in the graph?
Answer
Point D on the graph signifies the limit of proportionality. This is the point at which the stress and strain relationship is no longer linear. Beyond this point, the material experiences plastic deformation, meaning that it will not return to its original shape once the load is removed.