Sleeve grouting quality nondestructive testing system and testing method thereof

The invention discloses a sleeve grouting quality nondestructive testing system which comprises a prefabricated part base, a prefabricated structure is arranged on the prefabricated part base, a sleeve is arranged in the prefabricated structure, the sleeve is provided with a detection system for detecting the grouting quality in the sleeve, and the detection system comprises a data analysis and processing device, a data collector, a sensor and an excitation hammer. The sensor is connected with the data collector, and the data collector is connected with the data analyzing and processing device. The detection method of the detection system comprises the following steps: S1, drawing a measuring line; s2, drawing measuring points and numbering; s3, connecting a signal transmission line; s4, turning on a power supply of the data collector; s5, carrying out excitation to generate an elastic wave signal; s6, transmitting an elastic wave signal; s7, measuring the frequency spectrum inertia moment IMSi and the freque