In order to study the detectability and detection accuracy of different nondestructive testing techniques for the debonding defects in the composite honeycomb structure,the detection tests and results analysis of various nondestructive testing techniques were carried out for the composite honeycomb structure.Through ultrasonic testing method,through air coupling ultrasonic testing method,reflection terahertz testing method and reflection ultrasonic phased array testing method were used to carry out detection tests on the designed and prepared test samples containing different sizes and different distri-bution locations of prefabricated debonding defects.The detectability of prefabricated debonding defects and the size of de-tected defects were analyzed.The analysis results show that the debonding defects in the composite honeycomb structure can be detected effectively by the through ultrasonic testing method,reflection terahertz testing method and reflection ultrasonic phased array testing method.Reflection terahertz testing method has higher detection accuracy than through ultrasonic testing method and reflection ultrasonic phased array testing method.The through air coupling ultrasonic testing method can not ef-fectively detect the debonding defects in the composite honeycomb structure.
万方数据
维普
