Strength of materials...one liners...
Strength of materials One liners............ Ratio of change in dimension to original dimension know as strain. Strain has no dimension and it is fundamental behaviour of materials. Strain is fundamental quantity because it is measured in the laboratory. Strain at right angle to the direction of the applied load called lateral strain. S.I. unit of force is Newton (N). Volumetric strain is three times linear strain. Deformation progressively with time called creep. The property by which the body returns to its original position after removing load is known as ELASTICITY. Property by which the body can be beaten or rolled into thin plates called Malleability. Hooke's Law valid within elastic limit, Hence called elasticity law also. Same optical properties like permittivity, permeability in all direction called isotropic. same elastic properties in all direction called Homogeneous material. Plastic does not regain its original position after removing load. After