1986 年 29 巻 258 号 p. 4031-4036
To investigate the effect of hydrostatic pressure on the fracture toughness of boron steel and aluminum alloy, a compact tension test based on ASTM Standard is carried out under pressure up to 400 MPa. The displacement at the crack initiation is detected by an electric potential difference method under pressure. The elastic-plastic fracture toughness JIC increases with an increasing increasing pressure. The phenomenon of the increase of fracture toughness due to pressure is confirmed by measuring a critical stretch zone width of boron steel. The experimental JIC values are compared with the J-integral values analyzed by FEM.
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JSME international journal. Ser. A, Mechanics and material engineering
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