Abstract
Honeycomb sandwich structures are an attractive choice for the production of lightweight and resistant aeronautical components. These multilayered materials are however susceptible to water ingress leading sometimes to structural damage. Passive thermographic inspection is an interesting technique that can be applied right after landing, when water inside the honeycomb structure is often frozen producing large temperature gradients. Alternatively, an active configuration can be considered when inspection is performed several minutes after landing. In this paper, the passive approach was investigated on an aeronautical part where water ingress was simulated. A high-definition camera and a microbolometer were used for comparison.
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