In bolted joints, the load on the threaded fasteners are affected by the mechanical structure of clamped members and the clamping force, and various types of failure are expected through complicated mechanism. Therefore, it is important to acquire knowledge concerning the failures mechanisms and their effective measures to realize the reliable bolted joints. In order to get the specialized knowledge utilized for design and maintenance of mechanical systems, we have to manage a lot of information from various areas. The aim of this study is to develop the fault diagnosis database for bolted joints which can provide specialized and customized knowledges for individual design engineers. The structure of data module based on Hierarchical Fault Classification Method is proposed, and the user interfaces are discussed. The classified data offered by this database system is enable user to search for technical information without any difficulty, and to support the design procedure systematically.
