COMPOSITE STRUCTURE INTERFACE INSPECTION METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a composite structure interface inspection method capable of improving inspection accuracy.SOLUTION: A composite structure interface inspection method includes: applying vibrations to a composite structure composed of a cement composite material and a metal plate with vibration generation means for generating vibrations and receiving vibrations propagating through the composite structure with reception means to obtain a signal waveform (S1); performing envelope detection on the obtained signal waveform to obtain an envelope (S2); and, with an envelope included from the start until the end of attenuation in the obtained envelope being an attenuation curve, determining a state of the interface of the composite structure on the basis of an attenuation coefficient indicating attenuation characteristics in the attenuation curve (S4-S9).