抄録
In recent years, developing various types of products in a short design lead-time is needed to satisfy consumers' needs. In this study, a method to support expansion of design requirements using product cases is proposed. In preceding manuscript, framework for expansion of design requirements was proposed based on survey of study about design concept process and analysis of design experiment protocol. The framework is decomposed into processes as follows; collect product cases based on keyword given by the designer, screening of the collected cases, extraction of elements contained in the cases based on the result of screening, and decision to adopt extracted element to requirement of the current design. On the extraction process, entity, function, and attribute elements are extracted. In this manuscript, criterion for extraction of elements and supports to determine range of attribute's value is proposed. Then, the proposed system was developed and case studies are done using the system.
