1、Influencing factors on local stress-strain responses of notched specimen
2、The cleavage facture stress of notched specimen is much higher than that of smooth specimen.
3、The fatigue life of a notched specimen under random loading spectrum is evaluated by means of the present method.
4、The critical event for cleavage fracture in notched specimens is the propagation of a ferrite grain-sized crack into the matrix, and is independent of specimen sizes and widths.
5、Charpy impact test (V gap) : the specified height of pendulum of the one-time blow to V notched specimens in beam state, test specimen is broken by the impact absorbing energy.
6、the variation of N_0 depends mainly on the strength of materials in caes of blunt notched specimens and on the plasticity of meterials in case of sharp notched specimens;
