Infrared radiation properties of the carbon–carbon composite and their application to nondestructive detection of its defects

摘要: Abstract Infrared radiation properties and surface characteristics of C/C composites graphites were examined at temperatures in the range 293–373 K from viewpoint nondestructive detection defects these materials. The temperature specimen its variation quantitatively evaluated on basis true temperature, ambient emissivity radiosity coefficient to obtain data applicable thermographic defects. It was found that larger pore size roughness specimen, points. Graphite specimens with different artificial flaws 1–10 mm diameter 1–8 depth by thermography, minimum difference a defect be detected obtained regard flaw size.