Zusammenfassung
Diese Arbeit befasst sich mit Methoden und Prozessen der Produktentwicklung für die Mikrosystemtechnik. Hierbei fließt der Kontext der Individualisierung in die Methoden und Prozesse ein. Das Ziel dieser Arbeit ist es, konkrete Maßnahmen für eine effizientere Herstellung von individualisierten Mikrosystemen (iMST) systematisch abzuleiten. Zur Erreichung des Ziels werden in dieser Arbeit generelle Anforderungen aus diversen Anwendungsbereichen aufgezeigt. Anschließend wird mittels einer Fallstudien ein iMST hergestellt und strukturiert beobachtet. Mit dieser Studie zeigt die Arbeit konkrete Schwachstellen und mögliche Handlungsansätze in der Entwicklung von iMST auf. Um über diese Studie hinaus weitere Erkenntnisse von Schwachstellen und erforderlichen Maßnahmen zu erlangen, werden mehrere Unternehmen im Rahmen einer qualitativen Analyse befragt. Mit dieser Datengrundlage bildet die Arbeit eine Methodik, welche Prozesse, Methoden, Anforderungen und Werkzeuge vereint.
Die Methodik zeigt, in welchen Fällen und Phasen die entsprechenden Methoden eingesetzt werden sollen. Aufgrund der Herausforderungen von individualisierten Anwendungen stellt diese Arbeit die wichtigsten Methoden zur Bewerkstelligung dieser Herausforderungen bereit. Ein wissensbasiertes Werkzeug (KETTS) und die Nutzung von M/ECAD-Applikationen bieten großes Potenzial zur Effizienzsteigerung des Entstehungsprozesses. Diese werden in dieser Arbeit genauer beleuchtet, entwickelt und getestet. Die Methodik wird mit der Herstellung eines weiteren iMST validiert, wodurch der Mehrwert der ausgewählten Prozesse und Methoden deutlich wird. Im abschließenden Teil dieser Arbeit werden die Beschränkungen sowie potenzielle Forschungsrichtungen in der Produktentwicklung und Mikrosystemtechnik erörtert. Hierbei werden insbesondere die Möglichkeiten zur Weiterentwicklung und Erweiterung der einzelnen Methoden betrachtet.
This thesis deals with methods and processes of product development for microsystems. Thereby, the context of individualization enters into the methods and processes. The goal of this study is to systematically derive specific measures for more efficient development and production of individualized microsystems (iMST). To achieve this goal, general requirements from various application areas are identified in this thesis. Then, through a case study, an iMST is manufactured and observed systematically. With this study, the thesis shows specific weaknesses and possible approaches in the development of iMST. In order to gain further insights of weaknesses and necessary measures beyond this study, several companies are interviewed in a qualitative study. With this database, the work creates a methodology that combines processes, methods, requirements and tools.
The methodology shows in which cases and stages the respective methods should be used. Due to the challenges of individualized applications, this work provides the most important methods to overcome these challenges. A knowledge-based tool (KETTS) and the use of M/ECAD applications offer great potential to increase the efficiency of the creation process. These will be explored, developed and tested in more detail in this thesis. The methodology is validated with the manufacturing of another iMST, which demonstrates the added value of the selected processes and methods. The final part of this thesis discusses the limitations as well as potential research directions in product development and microsystems engineering. In particular, the possibilities for further development and expansion of the individual methods are considered.BibTeX
F. Civelek, A. Brem, K.-P. Fritz, und A. Zimmermann, „Product Development Processes for Individualized Products: A Case Study“,
IEEE Transactions on Engineering Management, S. 1–15, 2023, doi:
10.1109/TEM.2023.3277019.
Zusammenfassung
The demand for individualized products is continuously increasing. For this purpose, product development processes are already established in companies. However, these processes are typically based on mass products and are not necessarily suitable for individualized products. Hence, the question emerges of how to develop and manufacture individualized products in a corporate product development setup. The characteristics of individualized products and a multiple-case study in seven companies made apparent that product development processes for complex individualized products should be adapted according to the specific requirements and relate to specific product development methods. More specifically, results indicate that a prior definition and assurance of boundaries as well as free spaces through pretested products is key, as the validation stage is constrained for such products. Methods such as in-process monitoring, postprocessing, and responsibility sharing (co-design) and the use of expert tools foster such product development processes. That gives practitioners the possibility to develop and manufacture individualized products efficiently by adapting the product development process and using the right methods. Based on these results and the literature review, we propose a novel definition of individualized products and a holistic product development process that may support discussions of the relevance of mass individualization as a new paradigm.BibTeX
F. Civelek, K.-P. Fritz, und A. Zimmermann, „Towards a Tailored Engineering Design Process for Individualized Micro-Mechatronic Systems with a Novel Case-Based Methodology“,
Applied Sciences, Bd. 11, Nr. 17, Art. Nr. 17, 2021, doi:
10.3390/app11177909.
Zusammenfassung
The development and manufacturing of high-precision micro-mechatronic systems (MMS) is a challenging task, and the high demand for individualized products complicates the engineering design process (EDP) in particular. The established EDP for MMS is not designed for individualized products. This article gives an overview of the challenges (critical factors) in product development and manufacturing of individualized MMS (iMMS), a novel definition of iMMS, and describes a new qualitative methodology in order to tailor an EDP based on use cases, so-called “Tailored EDP-Methodology” (TEDP-Methodology). This TEDP-Methodology allows creating use-case-based product groups through the abstraction of the use cases and evaluating the requirements, which is essential to tailor or develop a new EDP. For the development of this new approach, a literature review and qualitative content analysis are prefaced. The TEDP-Methodology is critically examined and validated with a real case study for the development and manufacturing of an iMMS. This study shows critical points within the EDP. It shows fields of action for innovative tools to support the development process of iMMS and requirements for different product groups within iMMS. This article has both theoretical and practical implications.BibTeX
T. Vieten, D. Stahl, P. Schilling, F. Civelek, und A. Zimmermann, „Feasibility Study of Soft Tooling Inserts for Injection Molding with Integrated Automated Slides“,
Micromachines, Bd. 12, Nr. 7, Art. Nr. 7, 2021, doi:
http://dx.doi.org/10.18419/opus-13209.
Zusammenfassung
The production of injection-molding prototypes, e.g., molded interconnect devices (MID) prototypes, can be costly and time-consuming due to the process-specific inability to replace durable steel tooling with quicker fabricated aluminum tooling. Instead, additively manufactured soft tooling is a solution for the production of small quantities and prototypes, but producing complex parts with, e.g., undercuts, is avoided due to the necessity of additional soft tooling components. The integration of automated soft slides into soft tooling has not yet been investigated and poses a challenge for the design and endurance of the tooling. The presented study covers the design and injection-molding trial of soft tooling with integrated automated slides for the production of a complex MID prototype. The design further addresses issues like the alignment of the mold components and the sealing of the complex parting plane. The soft tooling was additively manufactured via digital light processing from a silica-filled photopolymer, and 10 proper parts were injection-molded from a laser-direct structurable glass fiber-filled PET+PBT material before the first damage on the tooling occurred. Although improvements are suggested to enhance the soft tooling durability, the designed features worked as intended and are generally transferable to other part geometries.BibTeX
F. Civelek
u. a., „Open-Eco-Innovation for SMEs with Pan-European Key Enabling Technology Centres“,
Clean Technologies, Bd. 2, Nr. 4, Art. Nr. 4, 2020, doi:
10.3390/cleantechnol2040026.
Zusammenfassung
The project “key enabling technologies for clean production” (KET4CP), which is supported by the European Commission, has the aim to connect small and medium-sized enterprises (SME) and Technology Centres (TC) for cleaner, greener and more efficient production. Within this context, SMEs and TCs across Europe work together to establish an open-innovation network and to raise awareness in productivity and environmental performance. This article presents how an open European network of TCs opens its innovation process to support SMEs to become cleaner, greener and more efficient. Furthermore, this article shows how the TCs and SMEs become a part of the open-eco-innovation platform in clean production and how successful the open-eco-innovation process of different European countries is. We revealed that a pan-European open innovation process for eco-innovations with TCs for key enabling technologies (KET TCs) and Enterprise Europe Network partners (EEN) is a successful approach for SMEs that want to produce and develop cleaner products. An application example is mentioned, in which TCs from different European countries have contributed to developing a product of a SME for energy harvesting. The SME, together with the TCs, developed a generator that is installed in city-level water supply pipes and so, it is outstanding in its application. This innovative application is also described in this article.BibTeX