Posted: February 17th, 2022

mechanical engineering

i need help with this excel files this seven point listed down need to be pulled out of the excel files …this excels files are the result of my experiment in class

  
Outcomes: · Determination of the torsional properties of a ductile steel test sample using a standard torsion test. · Observation the behavior of the material under torsion and report observations. · Study the fracture surface characteristics and report observations. · Gain familiarity with torsion testing procedures and testing equipment. The specific items to be determined are: 
1. Shearing Proportional Limit: the point where the shear stress and shear strain are no longer linear, note that some initial chuck tightening might cause a shift in the data while still in the linear range.)
2. Yield Shear Stress using 0.04 radians/meter of gage length. This is determined in the same manner as the tensile yield strength where the 0.2% offset is replaced by an offset based on the length of the sample. 
3. Probable Tensile Strength: Ultimate and Shear have a rough relation where Shear Strength at failure = 0.45 to 0.65 of the ultimate tensile strength. 
4. Experimental Shear Modulus- G, determined with the slope of the shear stress vs shear strain in the linear region. 
5. Maximum Elastic Shear Strain (useful for torsion spring design)
6. Maximum Shear Strain to failure 
7. Type and character of fracture

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