单轴应力(uniaxial stress) X Ox=EEx Z Ey=8=-VEx dhndhu 8. → A hkl Ox=-5 Which(hkl)? 15单轴应力(uniaxial stress) x E x    y z   x      0 0 hkl hkl s hkl z d d  d      z x  E 15 Which (hkl)?