One of the most common uses of the torsion test, is to determine the material of...

 

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One of the most common uses of the torsion test, is to determine the material of rods and bars especially circular cross-section bars. Your manager assigned you a job is to recognize the material of a circular bar with diameter of 17.5 mm and length of 205 mm from experimental data of angle of twist obtained from a torsion test. The material could be either Aluminium Alloy 1060 with a Modulus of Rigidity range of 20 <GS 33 (GPa), or Steel Alloy AISI 1020 with a Modulus of Rigidity range 70 < G< 85 (GPa) The data obtained from the test are as follows: Shaft Torque (N.m) Twist Angle (Degree) 28 1.15 49 1.93 2.11 55 Elastic Range Your manger asked you to perform the following: 1- Calculate the polar 2nd moment of inertia J in m*. 2- Determine the materials of the shaft using the tests data by calculating the Modulus of Rigidity Modulus of Rigidity G (Gpa) Material One of the most common uses of the torsion test, is to determine the material of rods and bars especially circular cross-section bars. Your manager assigned you a job is to recognize the material of a circular bar with diameter of 17.5 mm and length of 205 mm from experimental data of angle of twist obtained from a torsion test. The material could be either Aluminium Alloy 1060 with a Modulus of Rigidity range of 20 <GS 33 (GPa), or Steel Alloy AISI 1020 with a Modulus of Rigidity range 70 < G< 85 (GPa) The data obtained from the test are as follows: Shaft Torque (N.m) Twist Angle (Degree) 28 1.15 49 1.93 2.11 55 Elastic Range Your manger asked you to perform the following: 1- Calculate the polar 2nd moment of inertia J in m*. 2- Determine the materials of the shaft using the tests data by calculating the Modulus of Rigidity Modulus of Rigidity G (Gpa) Material