Due to the complex structure of composite material components, various defects such as delamination, debonding and cracks will occur during production and use, which will reduce the performance of composite materials. Their generation and existence will reduce the physical and mechanical properties of materials and even cause unforeseen serious consequences. Infrared thermal imaging non-destructive testing technology analyzes the infrared radiation characteristics of the inspected object. When there is a defect or damage inside the inspected workpiece, its surface temperature distribution will be changed, and the damage location can be detected through infrared thermal imaging. This method is especially suitable for the detection of thinner composite materials, and can detect delamination, debonding, inclusions, etc. The results are intuitive, fast, accurate, reliable, and efficient.

Infrared cameras have the following advantages in non-destructive testing of composite materials:

1. Non-contact detection: Infrared thermal imaging cameras can detect composite materials in a non-contact manner without direct contact with the material surface. This avoids physical damage to the composite and maintains the integrity of the material.

2. Rapid detection: Infrared thermal imaging cameras can quickly acquire thermal images of the surface of composite materials to achieve large-area, rapid scanning and detection. This can save time and improve detection efficiency, especially suitable for non-destructive testing of large-area composite material structures.

3. Wide detection range: Infrared thermal imaging cameras have a wide range of detection ranges for composite materials, including but not limited to defects, cracks, voids, structural inhomogeneities and other issues. It is able to detect temperature differences on the surface of the composite material, helping to identify potential hazards.

4. High sensitivity and accuracy: The thermal imaging camera has high sensitivity and accuracy, and can detect small temperature differences. It can quickly find thermal anomalies in composite materials, provide accurate thermal images and temperature data, and help analyze and evaluate the quality and performance of materials.

5. Real-time monitoring and recording: The thermal imaging camera can monitor the temperature distribution on the surface of the composite material in real time, and display and record thermal images in real time. This allows operators to observe and analyze the thermal properties of composite materials in real time, detect abnormalities in time, and take appropriate measures.

6. Safety: The use of thermal imaging cameras is safer for operators, without contact with composite materials, avoiding the potential risk of injury. It can also be used in different working environments to meet the detection needs of various composite material structures.

Infrared thermal imaging cameras have the advantages of non-contact detection, rapid detection, wide detection range, high sensitivity and accuracy, real-time monitoring and recording, and safety in the non-destructive testing of composite materials. The use of infrared thermal imaging cameras can better observe and analyze the changes in the temperature field on the surface of composite materials to detect and evaluate defects.