Berücksichtigung von Wechselwirkungen bei Zuverlässigkeitsanalysen [article]

Jochen Gäng, Universität Stuttgart, Universität Stuttgart
2012
Today's products are getting more and more complex. The reason for this assumption is obvious: on the one hand, the customers expect from new developments many innovative functions. On the other hand, they expect high class and reliable products. These facts lead to a conflict of interests, if one wants to devise a new product. Simple products, which cannot meet the functional requirements of the customers, can be checked and tested quite easily, the interactions between the components of the
more » ... components of the system are controllable and often insignificant. Thus the reliability can be determined almost exactly and a high reliability can be achieved. Looking at a complex system, the situation changes. By means of a huge amount of components in a system, the in-teractions increase extremely. The identification of all those interactions is not easy, especially if one handles with mechatronic systems. To reach the high reliability, which is a customer demand, it is necessary to identify and comprehend all the interactions. The aim of this thesis is the development of a method which is able to detect the interactions of a system and which allows a reliability estimation of the determined interactions in early phases of development. Additionally, the developer of the new product should get information about critical interactions. In a first step, possibilities to notate interactions and existing reliability analysis for interactions are considered in terms of the practicability as well as the advantages and disadvantages. It is getting obvious that either a direct link between the reliability and the interactions does not exist or the reliability determination and estimation in early phases of development is not possible. Thus a new method to estimate the reliability of interactions is developed in the present thesis. This method allows to calculate a so-called interaction factor if the unacceptable situation and failure modes of the interactions are known. Additionally, the developer receives information about different priorities of [...]
doi:10.18419/opus-4454 fatcat:4rk4zjztpvhadg4dfuzjkvbz2e