Loss factor is one of the most important parameters for weighting the damping characteristics of system and determine its ability of vibration energy dissipation

and has great effect on vibration noise transmission and prediction and analysis. Aiming at structure characteristics of ship

test models for ship typical structure are constructed that are transverse bulkhead plate frame

bilge plate frame

and bottom plate

and loss factor of ship typical structure are measured by the method of transient state decay

loss factor variation rule of ship typical structure is analyzed. By measuring loss factor of ship typical structure

provide input of system parameters for numerical calculation method of ship structural noise

and also rich the preliminary database of typical structural loss factor for ships.