Dynamic fracture of sintered Nd-Fe-B magnet under uniaxial compression
作者： Huanran Wang , Yin Wan , Danian Chen , Guohua Lei , Chunying Ren
DOI: 10.1016/J.JMMM.2018.02.058
关键词:
摘要: Abstract The dynamic fracture of the Nd-Fe-B magnets under uniaxial compression is investigated using a split Hopkinson pressure bar (SHPB). surface deformation and processes specimens are recorded adopting high-speed photography (HSP) with digital image correlation (DIC). load work applied to in SHPB tests determined strain signals transmitted reflected waves. distributions specimen during testing revealed DIC. It shown by HSP DIC that when near maximum, cracks at some positions on expanding formed ran along certain directions. per unit volume which corresponds maximal used characterize impact stability specimen. localized strains characteristic times DIC, projections onto plane.
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