Meaning
Non-destructive testing using thermography relies on analyzing the temporary temperature changes that occur when heat moves through a material. A transient heat signal generated by a flash lamp or laser is recorded by an infrared camera to reveal internal voids, delamination, or thickness variations. This inspection technique is widely used in automotive and aerospace production lines.
Flaw Detection
Structural anomalies are identified by observing how the surface temperature cools after being heated. When a transient heat signal encounters a void or a pocket of delamination, the heat flow is blocked, creating a warm spot on the surface. This temperature difference is analyzed to determine the depth and size of the defect.
Supply Chain
Distribution agreements for high-performance composite panels require the supplier to provide certified thermographic test reports to the buyer. These reports must show that the transient heat signal analysis of each panel has passed the required quality threshold. This documentation ensures that only defect-free panels are shipped, reducing returns.
Product Guarantee
Manufacturer warranties depend on the component being inspected and certified before installation. If a company fails to perform transient heat signal testing during the assembly process, they may void their insurance coverage for structural failures. This requirement forces manufacturers to integrate advanced thermographic scanning into their standard production workflow, reducing the risk of expensive product recalls and protecting the company’s brand reputation.
