Vehicle component abnormal sound test bench and test method thereof

The invention belongs to the technical field of automobiles, and particularly relates to a vehicle component abnormal sound test bench and a test method thereof. Comprising a test board, a vibration exciter supporting device, a terminal, data acquisition equipment, a power amplifier and a vibration sensor, the test bench comprises a test bench surface, a test bench surface bracket, a double-cavity air spring, an air spring base, a first steel pipe module, a second steel pipe module and a first test bench base surface; the vibration exciter supporting device comprises a vibration exciter, a vibration exciter bracket, a vibration exciter fixing nut, a vibration exciter supporting plane, a height adjusting stud, a vibration exciter bottom plate, a third steel pipe module, a fourth steel pipe module and a second test bench base plane; according to the invention, modular design is adopted, the occupied space is small, disassembly and assembly are convenient, the height of the test table board can be adjusted in a