Air coupling ultrasonic detection method for vertical honeycomb spliced interfaces

The invention discloses an air coupling ultrasonic detection method for vertical honeycomb spliced interfaces. The air coupling ultrasonic detection method comprises the following steps: a multi-layerhoneycomb structure is vertically spliced; a layer of detachable skin is laid on each of the upper surface and the lower surface of the obtained multi-layer honeycomb structure; first curing treatment is conducted on the multi-layer honeycomb structure paved with the detachable skin; air coupling ultrasonic detection is conducted on the multi-layer honeycomb structure subjected to primary curingtreatment, and whether all the honeycomb spliced interfaces are debonded or not is detected; if all honeycomb spliced interfaces do not have the debonding defect, the detachable skin on the upper surface and the lower surface of the multi-layer honeycomb structure is torn off; and surface skin is bonded to the upper surface and the lower surface of the multi-layer honeycomb structure, secondary curing is conducted on the m