Abstract
It is necessary for designers to know the values of material properties such as strength when they design structures. Such material data are generally obtained by looking over some mate-rials handbook or by carrying out some material tests. These tasks are not so efficient. Especially, for composite materials, that are one of advanced materials, a lot of material data have not been accumulated so for, and many data are scattered in companies, laboratories, and universities. Consequently, the development of the fact data base for composite materials, which collects and stores these data and gives us necessary and appropriate data, seems to be an urgent necessity. This paper deals with the trial development of the fact data base system for composite materials. The data model is decided to be relational but it has also hierachcal and network structures on account of the special nature of composites data. The data sheet for data input is made after investigating the each items of materials properties and perform-ing the trial entries by many reseachers. The computer programs for input, search, and out-put are made and tested. The hard ware is a desktop computer (FACOM 9450-II) with 20 MB hard disk, which constitutes sub data base and will be connected to a large computer of a data base center in Tsukuba.
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