一种副车架焊缝疲劳裂纹识别方法及系统
By generating a directional eddy current excitation field through finite element simulation and dynamic adjustment of the excitation coil array, and combining multi-dimensional signal fusion and ultrasonic signal analysis, the problems of missed detection and false detection in array eddy current detection technology were solved, and high-precision identification and grade determination of fatigue cracks in subframe welds were achieved.
CN122109299BActive Publication Date: 2026-07-17TONGJI UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TONGJI UNIV
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
Smart Images
Figure CN122109299B_ABST
Abstract
本发明提供了一种副车架焊缝疲劳裂纹识别方法及系统，该方法包括：根据应力分布云图确定出的目标风险区域，同步根据目标风险区域的空间位置动态调整预设激励线圈阵列的间距、角度及激励功率，以生成聚焦于目标风险区域的定向涡流激励场；构建出的动态基线信号库，同步通过最小二乘支持向量机进行自适应校准，以输出的目标融合信号；通过贝叶斯推理解耦出目标融合信号与副车架焊缝中的裂纹相关的特征参数，同步通过超声传感器采集目标风险区域对应产生的超声反射信号；检测出超声反射信号中的裂纹反射幅值特征，同步将裂纹反射幅值特征与特征参数进行相关性分析，以根据分析结果确定出对应的裂纹危险等级。本发明能有效提升裂纹识别效率。
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