1. Institute for Applied Computer Science in Mechanical Engineering (RPK) at the University of Karlsruhe (Germany) RPK Christine Bruch Institute for Applied Computer Science in Mechanical Engineering (RPK) University of Karlsruhe (TH) bruch@rpk.uni-karlsruhe.de http://www-rpk.mach.uni-karlsruhe.de Supervision o. Prof. em. Prof. E.h. Dr.-Ing. Dr.h.c. Hans Grabowski EXPECTED RESULTS AND CONTRIBUTION RESEARCH PROBLEM STATEMENT In general, not every function performed by a product is desired. In particular, some of the undesired product functions can have a damaging impact on the product itself and/or on the product environment. The earlier a design error is discovered, the less expenses its correction causes. Early capturing and processing the requirements originating from undesired product functions will improve the product quality and at the same time reduce the product development time. GOALS SCIENTIFIC SOCIAL To support the designer in the early design phases of clarification of the task and conceptual design by providing new methods and computer- supported tools To improve product quality and concomitantly reduce the number of iteration cycles during product design To improve the understanding in and the sensibility towards the genesis of undesired product functions from principle solutions and its impact on the product itself and/or ist environment Summer School on Engineering Design Research 2003, Second Week, 24.08-30.08.2003, Baden-Baden, Germany THEORETICAL FOUNDATION Essential Usefull Legend DESIGN METHODS DESIGN FOR QUALITY  Faults and Disturbing Factors  Fault Tree Analysis  FMEA KNOWLEDGE-BASED SYSTEMS KNOWLEDGE  Discovery  Representation  Processing  Evaluation  Management ONTOLOGY REQUIREMENTS ENGINEERING AND MANAGEMENT ANALYSIS TECHNIQUES ABSTRACTION METHODS CLASSIFICATION METHODS ASSESSMENT AND EVALUATION METHODS DECISION MAKING  Product Modeling o Requirements o Functions o Principle Solutions  Process Modeling  Context Modeling COMPUTER SUPPORT OF THE DESIGN PROCESS Requirements Elicitation from Undesired Functions HYPOTHESIS Elicitating the requirements originating from undesired product functions during conceptual design will improve the product quality, reliability and safety and will decrease product costs. RESEARCH APPROACH AND METHODS  Analysis of physical effects with regard to negativ effects  Derivation of undesired product functions from such negative effects  Development of a method for the assessment of the impact of undesired functions on the product and its environment  Development of a method for the elicitation of new requirements from undesired functions with intolerably high impact on the product or on its environment  Modeling the process of elicitation of new requirements from undesired product functions  Implementation and verification of the concept IMPACT MODEL Early assessment of the impact of undesired product functions on the product and/or ist environment Product quality Market share Number of design iterations Product costs - + + + - + + + + + In the area of computer supported and knowledge-based design  a better understanding of the design process, which is prerequisite for a better computer support in that area