磁気誘起速度変化を利用した音弾性応力測定法
1989 年 55 巻 511 号 p. 622-627
詳細
1989 年 55 巻 511 号 p. 622-627
The stress dependency of magnetically induced velocity change (MIVC) is studied on a welded joint of carbon steel with particular reference to the influence of the structure anisotropy on MIVC. The advantage of the present method using MIVC is cleared in comparison with the conventional method. The results obtained are as follows: (1)The magnetic field dependency of MIVC is insensitive to the structure anisotropy of base and weld metals. (2)The effect of stress on MIVC is equivalent to the effect of magnetic field. The stress dependency of MIVC is insensitive to the structure anisotropy of base and weld metals. (3)The present method using MIVC is more effective than the conventional method because of its insensitivity to the structure anisotropy. The present method is available to nondestructive measurements of residual stresses.
