This is an experiment to determine the mechanical properties by using pliant and hardness test. In this case we have to know the atomic adhere and structure affect the mechanical property of material. We strike to know contrasting crystal structure and different coordination and different bonding type will affect the properties of material. We take to the primary(prenominal) five properties of the material, toughness, Youngs modulus, yield specialism, ductility, and ultimate tensile strength. We need to know the relationship between the properties of material. We also need to know how hardness relate to those properties. In this experiment, we will give out relationship for for each one of material with their property and potential flat coat why those property occur to us. Such as stronger bonding type will result high tensile strength and high yield strength. The dislocation will increase the ultimate stress of the material. Youngs modulus are metric the harshness of the material that relate to the bonding of the material. Ductility indicates the ability to tractile deformed.
Procedure
After the introduction, it is time to start experiment now. There were cardinal different materials in front of us.
They are brand, brass, copper, aluminum, polycarbonate, polyethylene, and polystyrene
First part, we measured the hardness by using Rockwell Hardness Test, scale HRE. This gist a 1/8 inch diameter steel ball indenter with 100 kg load.We come out material on the HRE scale and twisted the wheel until the green button flashes. and so machine starts work and drilled the material. When the machine stabilized and take the stand a stable add together after beep, we record the number on the machine. We did this for each material three times and on different surface, and then we calculate the average hardness for each material that we test on.
Second part we measured the width, thickness, and bore length of the material by use calipers. Then we put material on the instron tech machine. First we lock the...If you hope to get a full essay, order it on our website: Ordercustompaper.com
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