Abstract
An experiment of hitting a bolt by a test hammer was executed for a variety of torques to record and analyze the sounds, and a diagnosis method was proposed. Then, a series of sound monitoring experiments were performed for submersible pumps by intentionally pasting obstacles between blades of a pump and removing parts of blades. Based on the spectral analysis of recorded sounds, a diagnosis method was proposed for submersible pumps. To record sounds of many submersible pumps at various places and facilities, a distributed database system was developed by using the Web Service technology.
