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This paper presents a methodology and corresponding results how interdependencies in-between lifecycle phases deriving from the application of Eco-Design strategies can be identified to support engineering management. Thereby, interdependencies among the phases 'Product Planning', 'Product Development', 'Production Planning', 'Production', 'Distribution', 'Utilization', 'Maintenance', 'Modernization' and 'Product Disposal' are analysed based on ecological check items. To support a respective systems understanding of the lifecycle, a MDM (Multiple Domain Matrix) approach is carried out. Gained results are interpreted in order to a measure the criticality of singular lifecycle phases and Eco-Design activities.The presented approach thereby shows how different perspectives on the lifecycle can be combined in order to allow a more sophisticated eco-oriented planning of future products. In addition, the presented methodology can be expanded to further Design for X-guidelines to support a lifecycle-oriented planning from further perspectives.

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Dynamic changes and variations play a decisive role in innovation processes. By addressing the aspect of cycles -that is reoccurring temporal or structural patternswithin development processes as well as in their context, this research contributes to an enhanced understanding of complex dynamic interdependencies. Therefore, two development projects are analyzed and a series of interviews with industry is conducted, aiming at deriving examples of cycles from process execution. These examples are classified according to existing approaches for describing development processes and their context.Based on this, a definition of relevance of cycles is proposed and an explanatory model of cycles and interdependencies within the development process as well as in its context is presented. Finally, the modeling approach is reviewed concerning its benefits and its applicability.

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