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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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Especially the early phase of the innovation process, the planning phase, is characterized by extensive decisions and a wide range of uncertainty. Hence, it is essential for product designers to understand future Product-Service System characteristics and prospective properties. Thus, in this paper we present a framework for depicting a Product-Service System model throughout the planning phase of the innovation process based on existing methodologies in product and service modeling The user of the framework should be supported in decision making and keeping the overview during the early phases of product development so crucial decisions can be made on a conceptual and reasonable basis.

Abstract. Fast changing environment put huge pressure on companies, which have to develop products increasingly faster in order to stay competitive. Change propagation in requirements engineering and life-cycle-management is a key competency to increase the efficiency of product planning. We propose a method using structural complexity management methods to achieve consistency between these two domains. Requirements modules and life cycle planning have been connected by matrix subtraction in order to identify changes in both domains. The result is an increased level of transparency of the regarded system. Additionally, traceability of change for supporting product planning in the early phases of a design process is enhanced.