Driving Questions
As an engineer why is it important to study material properties?
Why is it important for engineers to test materials for their strength determined from the stress-strain curve?
How do engineers calculate the strength of materials using the stress-strain curve?
Project Description
In this project, I partnered off with one other classmate. We retrieved a brass dog bone and used a dial caliper to obtain measurements of the diameter and the length of the dogbone.
We placed the dog bone in a frame and used the Structural Stress Analyzer to produce a stress-strain curve graph.
We printed out the graph and used the data to determine various information about our material, including the stress at Proportional Limit, Ultimate Strength, Breaking Point, and Yield Point. After we calculated that, I determined the Modulus of Elasticity, Modulus of Resilience, and Modulus of Toughness.
What I Learned
Through this project involving tensile testing, I learned the components of a stress-strain graph and what each one of them means in the context of the material being tested. I learned how strong brass is, and the stress limits of the Proportional Limit, Ultimate Strength, Breaking Point, and Yield Point. I also became familiar with the formulas for determining the stress limits at certain points throughout the stress-strain curve, and the Modulus of Elasticity, Resilience, and Toughness.