A Specimen made from a brittie material with a cross-section area of 0.004m was gradually loaded in tonsion until it yielded at a land of 280 KN and fractured Slightly after the yield point. If the specimon's material observed slashert clashe deformation until fracture, determine the material's toughness in terms of energy cidsor bed, in kj. Take E = 200 Gpa.
