NON-DESTRUCTIVE INSPECTION OF COMPOSITE STRUCTURES USING ACTIVE IR-THERMOGRAPHY METHODS

摘要

In this paper are presented procedures aimed to detect two types of flaws: thickness irregularities and internal defects/damages like delaminations, by nondestructive inspection (NDI) method named infrared thermography (IRT), the inspected objects being manufactured from carbon fiber reinforced polymeric laminates (CFRP). For inspection, two active infrared thermography methods were used, the lock in method and the transient/long pulse method, in order to establish the main parameters of both of them in order to compare which of them is the most appropriate one.