抄録
We present theoretical and experimental results on the fracture behavior of single-edge precracked giant magnetostrictive materials under magnetic fields. The crack was created normal to the direction of easy magnetization. Three-point bending fracture tests were carried out, and the fracture loads were measured. Plane strain finite element analysis was also performed, and the energy release rate was calculated. The effect of magnetic field on the energy release rate and apparent fracture toughness (critical energy release rate obtained using the fracture load) was then discussed.
