中国科技论文在线-凯发网

a stress monitoring device of elasto-magneto-electric (eme) effect type, for monitoring stress of a structural component of ferromagnetic materials, includes a magnetic field generating unit, a magneto-electric (me) sensing unit, a support skeleton, and a signal controlling and conditioning instrument. under the control of the signal controlling and conditioning instrument, the magnetic field generating unit generates a magnetic field for magnetizing the structural component. the me sensing unit outputs an electrical signal vcharacterizing the magnetic field without a need of external power supply. this electrical signal vis analyzed and processed by the signal controlling and conditioning instrument to output a magnetic characteristic value vcorresponding to the changes of the external forces that are exerted on the component. this stress monitoring device realizes on-line, real-time, and nondestructive monitoring, as well as off-line nondestructive monitoring.