基于非统一磁电荷模型的缺陷泄漏信号前向解决方法的研究
Pengfei Gao1, Hao Geng1, Lijian Yang1
1College of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
本研究提出了一种改进的磁电荷密度模型,用于在磁流泄漏 (MFL) 测试中量化管道缺陷. 该模型准确地预测了泄漏场分布,提高了缺陷大小的评估.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试是指非破坏性测试.
- 电磁主义 电磁主义
背景情况:
- 管道磁流泄漏 (MFL) 检查对于材料缺陷检测至关重要,因为其无接触性质.
- 在MFL测试中,量化缺陷大小至关重要,因为它依赖于磁性泄漏信号和缺陷几何之间的关系.
- 现有的模型经常使用统一的磁电荷分布,这可能会限制缺陷特征的准确性.
研究的目的:
- 为管道缺陷泄漏领域开发一个改进的计算模型.
- 为了准确地描述磁性泄漏信号与缺陷大小之间的关系.
- 为了提高MFL测试中缺陷尺寸的量化.
主要方法:
- 开发了一种基于磁双极非均磁电荷分布的计算模型.
- 在传统均分布的磁电荷模型中得到了改进.
- 嵌入磁电荷密度与深度的变化用于三轴信号计算.
- 进行激发拉动实验,分析矩形缺陷的泄漏场.
主要成果:
- 改进的模型准确地预测了矩形缺陷的泄漏场分布.
- 实验结果证实,缺陷大小 (长度和宽度) 显著影响泄漏场分布.
- 较大的缺陷导致泄漏场分布的变化更为敏感.
- 开发的模型显示与实验泄漏信号数据的一致性.
结论:
- 不统一的磁电荷密度模型提供了管道缺陷泄漏场的更准确的表示.
- 该模型提供了一种实际的方法来提高MFL测试中缺陷评估的质量和准确性.
- 这些发现有助于更可靠的管道完整性的非破坏性评估.
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