Strength of Materials & Surface Roughness
Abstract
The mechanical behavior of a material is determined by its properties. The relationship between stress and strain is such a property. By applying tension stress to a material, we can determine its Young’s modulus, i.e. its elastic behavior at small stresses, and its tensile strength, i.e. the stress at which it fractures. The Young’s moduli and the tensile strengths of several samples, were experimentally determined. Since the straining of the material causes its atomic planes to shift, the surface roughness of the sample increases with increasing strain. This increase in surface roughness was measured as well. Similarly, by applying compressive stress to materials, their compressive strength can be determined.
Strength of Materials & Surface Roughness
Zoom Session 1
The mechanical behavior of a material is determined by its properties. The relationship between stress and strain is such a property. By applying tension stress to a material, we can determine its Young’s modulus, i.e. its elastic behavior at small stresses, and its tensile strength, i.e. the stress at which it fractures. The Young’s moduli and the tensile strengths of several samples, were experimentally determined. Since the straining of the material causes its atomic planes to shift, the surface roughness of the sample increases with increasing strain. This increase in surface roughness was measured as well. Similarly, by applying compressive stress to materials, their compressive strength can be determined.
