Design and fabrication of an improvised Young’s Modulus Apparatus

Abstract

In elasticity of matter, the behaviour of elastic materials are described in terms of elongation, external force applied to elastic materials, stress, strain, and elastic moduli such as Young’s modulus, Shear modulus, and Bulk modulus. Demonstration of this elastic modulus, particularly Young’s modulus in the classroom is a usual problem because acquiring an apparatus for this purpose is expensive. In this paper, improvised Young’s modulus apparatus is fabricated. The improvised Young’s modulus apparatus is tested using pure copper wire, and two other metallic wires of stainless steel and galvanized iron wires: the copper wire of diameter 0.42 mm has a Young’s modulus of 10.04 × 1010 N/m2 ± 6.783 N/m2 which is 8.7% than the known Young’s modulus of pure copper wire. On the other hand, the Young’s modulus of GI wire of diameter 0.555 mm and stainless steel wire of diameter 0.42 mm are 17.92 × 1010 N/m2 and 18.021 × 1010 N/m2, respectively. The improvised apparatus is functional and can be used for classroom experiments and demonstration.