Conversion factors are 1psi = 6895Pa and 1Pa = 1.450 × 10−4psi 1atm = 1.013 × 105Pa = 14.7psi. 1 psi = 6895 Pa and 1 Pa = 1.450 × 10 −4 psi 1 atm = 1.013 × 10 5 Pa = 14.7 psi. An object or medium under stress becomes deformed. The quantity that describes this deformation is called strain. In engineering and materials science, a stress–strain curve for a material gives the relationship between stress and strain. It is obtained by gradually applying load to a test coupon and measuring the deformation, from which the stress and strain can be determined (see tensile testing). 3 days ago · Stress and strain have a straight proportional relationship up to an elastic limit. The relationship between stress and strain is explained by Hooke's law. Hooke's law states that the strain in a solid is proportional to the applied stress, which must be within the solid's elastic limit. .

what is stress and strain