激光焊接质量的实时检测方法
By using a polarization-sensitive optical coherence tomography system to screen effective data from the welded area, the problem of inaccurate depth measurement in traditional laser welding monitoring has been solved, enabling rapid and accurate welding quality assessment under different conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
- Filing Date
- 2022-12-16
- Publication Date
- 2026-07-17
AI Technical Summary
In existing laser welding processes, traditional monitoring technologies cannot accurately measure the welding depth. They are affected by factors such as multiple reflections, stray light, fumes, and spatter, resulting in inaccurate welding quality assessment. Furthermore, they are greatly affected by welding parameters and materials, making it difficult to achieve rapid and effective quality assessment.
A polarization-sensitive optical coherence tomography system is used to obtain phase delay images by scanning the weld area. The reference value range of the polarization-sensitive optical coherence tomography system is used to filter valid data, eliminate the influence of multiple reflections and stray light, and calculate the accurate depth value of the weld area.
It improves the accuracy of weld depth measurement, reduces the influence of subjective judgment, enables rapid and effective evaluation of weld quality under different welding conditions, reduces dependence on welding parameters and materials, and improves the reliability of measurement.
Smart Images
Figure CN115854913B_ABST