| 金属磁记忆法诊断的理论基础——铁磁性材料的弹—塑性应变磁化 |
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| 引用本文： | 仲维畅. 金属磁记忆法诊断的理论基础——铁磁性材料的弹—塑性应变磁化[J]. 无损检测, 2001, 23(10): 424-426 |
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| 作者姓名： | 仲维畅 |
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| 作者单位： | 仲维畅（南京燃气轮机研究所,南京210037） |
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| 基金项目： | 国家自然科学基金资助项目(50001006) |
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| 摘 要： | 电磁感应定律证明，铁磁性材料在地球磁场中的自发磁化来源于定向应力作用下材料本身的应变和交变应力作用下材料的非对称弹－塑性应变。某种铁磁性材料的自发磁化过程可由该材料的磁化和退磁曲线来估计，由此推得的磁弹性现象图与实验结果相一致。
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| 关 键 词： | 无损检验 金属磁记忆 铁磁性材料 弹－塑性应变 磁化曲线 |
| 文章编号： | 1000-6656(2001)10-0424-03 |
| 修稿时间： | 2000-09-05 |
THEORETICAL FUNDAMENTALS OF THE METAL MAGNETIC MEMORY DIAGNOSTICS: SPONTANEOUS MAGNETIZATION OF FERROMAGNETIC MATERIAIS BY ELASTIC-PLASTIC STRAIN |
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| ZHONG Wei chang. THEORETICAL FUNDAMENTALS OF THE METAL MAGNETIC MEMORY DIAGNOSTICS: SPONTANEOUS MAGNETIZATION OF FERROMAGNETIC MATERIAIS BY ELASTIC-PLASTIC STRAIN[J]. Nondestructive Testing, 2001, 23(10): 424-426 |
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| Authors: | ZHONG Wei chang |
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| Abstract: | The law of electromagnetic induction demonstrates that the spontaneous magnetization of ferromagnetic materials in the magnetic field of the earth is caused by the strain of materials themselves under the action of directional stress as well as the unsymmetrical elastic plastic strain of materials under the action of cyclical stress. The process of the spontaneous magnetization of a ferromagnetic material can be estimated from the magnetization and demagnetization curves of the material, thereby the deduced diagram of the magneto elasticity phenomenon of the material is identical with the experimental result. |
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| Keywords: | Nondestructive testing Metal magnetic memory Ferromagnetic material Elastic plastic strain Magnetization curve |
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