| 扰动磁场检测技术中裂纹磁场信号的反演 |
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| 引用本文： | 任尚坤,朱志斌,林天华,任吉林. 扰动磁场检测技术中裂纹磁场信号的反演[J]. 无损检测, 2010, 0(2): 86-89 |
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| 作者姓名： | 任尚坤 朱志斌 林天华 任吉林 |
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| 作者单位： | 南昌航空大学 无损检测技术教育部重点实验室; |
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| 基金项目： | 航空科学基金资助项目(06ZF56009); 江西省自然科学基金资助项目(2007GZC1587); 无损检测技术教育部重点实验室基金资助项目(ZD200629001) |
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| 摘 要： | 依据试验数据和有限元仿真结果,分析了裂纹缺陷特征与扰动磁场分布的关系,总结出交流场检测技术中磁信号裂纹尺寸反演的基本规律。借助于B_x扰动磁场信号形状与裂纹缺陷特征之间的相似性,建立了二维表面缺陷形状的反演算法。
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| 关 键 词： | 交流场检测技术 无损检测 扰动磁场 裂纹 信号反演 |
Researches of Flaw Magnetic Field Signal in Alternating Current Field Measurement Technique |
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| REN Shang-Kun,ZHU Zhi-Bin,LIN Tian-Hua,REN Ji-Lin ,Nanchang Hangkong University,Nanchang ,China). Researches of Flaw Magnetic Field Signal in Alternating Current Field Measurement Technique[J]. Nondestructive Testing, 2010, 0(2): 86-89 |
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| Authors: | REN Shang-Kun ZHU Zhi-Bin LIN Tian-Hua REN Ji-Lin Nanchang Hangkong University Nanchang China) |
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| Affiliation: | REN Shang-Kun,ZHU Zhi-Bin,LIN Tian-Hua,REN Ji-Lin (Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,China) |
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| Abstract: | Relationships of flaw disfigurement characteristic and disturbing magnetic field distribution were studies based on experimentation and finite element simulations.Mechanism about magnetic field signal size inversion in alternating current field measurement(ACFM) was concluded.According to the comparability of disturbing magnetic field signal form and flaw characteristic,the 2-D inversion algorism of surface flaw was presented. |
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| Keywords: | ACFM Nondestructive testing Disturbing magnetic field Flaw Signal inversion |
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