Quantitative detection of defect size based on infrared thermography: temperature integral method.

Area of Science:

• Non-destructive testing
• Infrared thermography
• Materials science

Background:

• Quantitative defect size detection using infrared thermography presents significant challenges.
• Existing methods often lack the desired accuracy and convenience for precise defect analysis.

Purpose of the Study:

• To introduce a novel Temperature Integral Method (TIM) for quantitative defect size detection.
• To evaluate the performance, robustness, and accuracy of the TIM method.

Main Methods:

• Development of the Temperature Integral Method (TIM) integrating pixel temperature values.
• Quantitative defect size determination by summing temperature data across the defect area.
• Validation through comprehensive experiments and simulations.

Main Results:

• The TIM method successfully provides quantitative and convenient defect size measurements.
• Experimental and simulation results demonstrate the TIM's effectiveness.
• Comparison with existing methods highlights the TIM's superior robustness and accuracy.

Conclusions:

• The novel Temperature Integral Method (TIM) offers a reliable solution for quantitative defect size detection.
• TIM enhances the capabilities of infrared thermography in non-destructive testing applications.
• The method's accuracy and robustness make it a valuable tool for defect analysis.