Abstract
A steel shear modulus measurement has been conducted using spring-mass oscillation analysis. The purpose of this study is to determine whether the spring-mass oscillation analysis method can measure the shear modulus of the steel. In this study, springs that are used are made of steel with a spring radius of 7.86 mm, a spring wire diameter of 0.817 mm and there is no distance between the coil springs. The length of the spring is varied 7 times, i.e., 4.75 cm, 5.36 cm, 5.89 cm, 6.81 cm, 8.53 cm, 9.44 cm, and 10.87 cm. The spring radius and the diameter of the spring wire are measured using a micrometer screw, while the spring length is determined using image analysis using the Logger Pro program. The spring constant is determined from the equation of the results of the position graph fitting (x) with respect to time (t) load on the oscillating spring-mass system. The value of the shear modulus can be determined from the constants on the graph of the relationship of the spring constant to the spring length following the equation from Sommerfeld. The research measures the shear modulus is 1.24 GPa
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