应力对漏磁信号的影响

基金项目:

北京市自然科学基金资助项目(3052014)

详细信息

The Effect of Stress for Magnetic Flux Leakage Signal

摘要: 根据最新力磁理论，使用微型霍尔探头对R3碳钢进行漏磁检测。分析了在弱磁场和强磁场下施加应力后材料的漏磁信号变化。指出残余应力作用下中碳钢的漏磁信号会发生剧烈变化以及应力和漏磁信号之间的联系。预言了对应力集中进行漏磁检测的可行性。
- 漏磁检测 /
- 残余应力 /
- 磁化率 /
- 霍尔元件
Abstract: According to the lately force magnetic theory, tiny Holl probe was used to practice magnetic flux leakage(MFL) testing on R3 middle-carbon steel. Experiments were proceeded under low and high MFL signals change after stress being applied. The significant effect of residual stress on MFL signals was pointd out, the relationship between residual stress and MFL signal was pointed out also. Experiments showed that it is possible to test the stress concentration with the above mentioned method.
- Magnetic flux leakage testing /
- Residential stress /
- Magnetic permeability /
- Holl element

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