earticle

영어

Newly proposed atomic model generates 4 kinds of rotational electro-magnetic waves(leftwise positive, leftwise negative, rightwise positive and rightwise negative). The atomic bonding force produces elastic deformation. The increasing energy makes plastic deformation(Laplacian), strain - hardening and rightwise positive. The rightwise positive produces ductile fractures. The micro plastic deformations of grain boundaries generate fatigue, creep and thermal fatigue, which are caused by rightwise positive. It does matter between each tests conclusively, especially uniaxial tensile one. Accumulation of rightwise positive makes fatigue at constant stress and undulating one. Plastic deformations is pure shear at any mean stress always.