## 4 Implementation and Results  
This section implements the methodology presented in Section 3 and summarizes the findings. In Section 3, the novel TEDP-Methodology was created with the aim and focus to categorize the use cases into product groups. For this purpose, various approaches were used. The implementation of the TEDP-Methodology is shown in Figure 10.  
Figure 8: Implemented digital manufacturing process chain for iMMS. Figure 9: Final product in which the iMMS is integrated. The results in this section provide the fundamentals for a use-case-based EDP in the engineering area of MMS. They show that there are use cases for iMMS. Consequently, the trends and the relevance mentioned in Section 1 are also confirmed. The results also show that iMMS can be used for different branches of industry. Further results from Section 3.2 are the definition of the requirements for iMMS. This was shown in Table 3.  
From these results, it is clear that the importance of the requirements strongly depends on the individual use case, although it is always based on iMMS. This is the reason why each use case has to be attributed to a different product group, and no group of use cases within the same product group has emerged from this study. The tailoring of an EDP for iMMS is more difficult due to the diversity of product groups, as this would require tailoring a separate EDP for each product group. In order to create a general EDP for all iMMS, it is sensible to give all requirements a high weighting. Then, this would be the most demanding case. That means that the requirements \"production time\", \"reliability\" and \"costs\" can be ranked as having the highest relevance. For the requirement \"batch size\", it is sensible to set both high and low, as both strategies can require high engineering demands. By using this approach, a fictitious product group is used to create an EDP and this EDP meets all requirements. Another approach is to prioritize the evaluation that emerged from this study. By doing so, it becomes clear that costs and reliability would need the highest priorities. In summary, this new methodology provides an overview of the diverse characteristics of product groups. These characteristics are important influencing factors for the design process and, therefore, helpful when a design process is newly created or tailored. In Section 3.3, a use case for iMMS was implemented, and the design and manufacturing process was observed. The goal was to test and confirm the manufacturability of complex iMMS with DMT and to find a reference process that is similar to the conducted design process. The gained insights and results of the case study are as follows:  
1. The implemented design process for the smart connector is similar to V-Model-Guideline 2206 for mechatronic systems of the German Association of Engineers (VDI) but not transferable without modification [61]. 2. The development and manufacturing of iMMS with digital technologies in a short time (approx. 15 working days) are possible. 3. In both the design process and the manufacturing process, cost-intensive revision loops had to be executed. Figure 10: Inductive categorization of all analyzed iMMS use cases under consideration of requirements to create product groups. 4. There is a need for methodological support within the design process, especially in the area of manufacturability, reliability and CAD software tools. 5. Expert knowledge plays a very important role in the effective development and production of iMMS. Based on the first result, it can be assumed that the V-model is the basis for tailoring and creating a new EDP for iMMS. Nevertheless, VDI 2206 cannot be transferred one by one, as gaps have been identified. Additionally, a model as abstract as VDI 2206 cannot meet the specific requirements of the iMMS. For example, there is no reference to cross-domain work during the planning and defining of requirements.