Determining elastic modulus of the material by measuring the deflection of the beam loaded in bending

Abstract

The paper presents a theoretical model and design solution for the device which determines the modulus of elasticity by bending the material (test samples), instead of the usual stretching. The device was designed, assembled and successfully tested in the laboratory. Experimental determination of the elastic modulus was conducted by measuring the deflection of samples under a constant load. Values of the elastic modulus resulted from theoretical relations. Measurement was performed and measurement errors, i.e. device errors, were analysed.

Keywords

• deflection
• device for determining the modulus of elasticity
• elastic modulus
• stress