Xiaona Wang, Yishu Zhang, Dexin Hou, Shuliang Ye. Detection of microcrack in inductor based on orthogonal scanning line laser thermography[J]. Infrared and Laser Engineering, 2020, 49(7): 20190522
- Infrared and Laser Engineering
- Vol. 49, Issue 7, 20190522 (2020)
Fig. 1. System structure diagram
Fig. 2. Detection principle of laser orthogonal scanning thermography
Fig. 3. (a) Thermography diagram, (b) Submax-filtered result diagram
Fig. 4. (a) Submax-filtered result diagram, (b) Fan-filtered result diagram, (c) Crack extraction diagram
Fig. 5. (a) Submax-filtered result diagram, (b) Crack extraction diagram, (c) Sample crack diagram
Fig. 6. Crack in ferrite inductor and microcrack electron micrograph
Fig. 7. Laser thermography detection system
Fig. 8. Microscope image and thermography
Fig. 9. Thermography of microcrack sample
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Table 1. Automatic detection results of ferrite inductor cracks
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