Despite all these efforts the number of breakdowns and factory recalls does not seem to diminish (cf. KBA; 2006). Obviously risk potential remains; which is not or only partially addressed by the conventional; mostly isolated; application of these methods. By integrating different methods; advantages of several complementary approaches are combined in order to identify faults and their potential causes more effectively (cf. DIN; 2005; p.11). Work in this field has already been done combining methods such as QFD and FMEA (Sesma Vitrian; 2004) or FMEA and FTA (DIN; 2004; p.8). Thus the contribution to the quality capability of a product is more than the sum of the outputs of separately used techniques. To show the potential of this method integration a conjoint use of Fault Tree Analysis (FTA) and the DeCoDe method of Demand Compliant Design will be discussed.
Keywords: Fault Tree Analysis; Demand Compliant Design (DeCoDe); Systems Engineering; Method Combination; Method Integration