Abstract
Abstract In structural health monitoring, fast, non-destructive, and non-contact testing has gradually become an important demand. This paper presents a double-side debonding detection method of honeycomb sandwich structure (HSS) based on the air-coupled guided wave. We analyze the dispersion characteristics and propagation law of guided waves in a honeycomb sandwich structure (HSS) using numerical simulation. Moreover, dispersion compensation was employed to reduce the stacking of signals. Finally, the debonding region was imaged. It realizes debonding detection on both upper and lower skins according to the amplitude changes of the direct wave signal and coda wave signal.
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