Present status of Data-Free-Way — Distributed database for advanced nuclear materials

Abstract This paper describes the status of the pilot system on the distributed database for advanced nuclear materials named Data-Free-Way. Trials of utilization of the system focused on the issues relating to fusion materials are mentioned. A relational database management system was utilized to unify useful data of material properties into the distributed database. The other software such as operating system, network utilities, etc. were also incorporated. To make retrieval rationally and promptly, a menu for selecting data items was expanded for the system. High-temperature tensile properties of type 316 stainless steel irradiated in various reactors were analyzed. The results indicated that correlation between postirradiation total elongation versus amounts of displacement damage was better than that between postirradiation total elongation versus helium accumulation in the alloys. Furthermore, correlation coefficients of the data between those two variables were better at higher temperature ranges.