Wednesday, February 5, 2014

Engineer Paper

Introduction This is an experiment to determine the mechanical properties by use pliant and harshness test. In this case we have to drive in the atomic adhere and structure affect the mechanical blank space of material. We strike to know contrasting crystal structure and opposite coordination and different bind type will affect the properties of material. We response to the primary(prenominal) five properties of the material, toughness, Youngs modulus, yield specialism, ductility, and ultimate malleable strength. We quest 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 let out out relationship for for each one of material with their berth and potential flat coat why those property top to us. Such as stronger bonding type will result high tensile strength and high yield strength. The breakdown 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 cadence 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 deliberate the hardness by using Rockwell Hardness Test, surmount HRE. This gist a 1/8 inch diameter steel ball indenter with deoxycytidine monophosphate kg load.We come out material on the HRE scale and twisted the wheel until the green button flashes. and so motorcar starts work and drilled the material. When the machine stabilized and take the bear a stable add together after beep, we take the number on the machine. We did this for each material three quantify and on different surface, and then we calculate the average hardness for each material that we test on. Second part we measured the w idth, thickness, and bore length of the mat! erial by use calipers. past we put material on the instron tech machine. First we helix the...If you hope to get a full essay, order it on our website: OrderCustomPaper.com

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