Christoph Klahn


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Klahn

First Name

Christoph

ORCID

0000-0001-6947-3621

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2014 - 2019242020 - 202313
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Publications1 - 10 of 37
  • Valve Body Element with Generative Layer-By-Layer Construction
    Item type: Patent
    Stoll, Philipp; Spierings, Adriaan; Ferchow, Julian; et al. (2019)
    The invention relates to a valve body element (10) which is produced as a single piece and which has a hybrid construction. The valve body element has a conventionally produced base (101) and structures which are constructed on the base (101) by means of a generative production method. The combination has such a valve body element (10) and an embedded sensor. The valve body (2) has one or more of said valve body elements (10) and two or more channels, each of which has an inlet (50). All of the inlets (50) are at least partly formed in the base (101).
  • Design Strategies for the Process of Additive Manufacturing
    Item type: Conference Paper
    Klahn, Christoph; Leutenecker, Bastian; Meboldt, Mirko (2015)
    Procedia CIRP ~ CIRP 25th Design Conference Innovative Product Creation
    Additive manufacturing (AM) is a cyclic manufacturing process to create three-dimensional objects layer-by-layer directly from a 3D CAD model. Today AM processes like SLM and SLS are already suitable for direct part production. The processes have little restrictions regarding the shape of the object. The challenge to a designer is to use the unique characteristics of additive manufacturing in the development process to create an added value for the manufacturer and the user of a product. This paper presents two design strategies to use additive manufacturing's benefits in product development. A manufacturing driven design strategy allows a substitution of manufacturing processes at a later stage of the product life cycle, while a function driven design strategy increases the performance of a product. The choice of strategy has great impact on the development process and the design of components. Two cases are presented to explain and illustrate these design strategies.
  • Produktentwicklung mit digitalisierten Technologien: Wertschöpfung durch 3D-gedruckte Serienbauteile im Maschinenbau
    Item type: Journal Article
    Meboldt, Mirko; Klahn, Christoph (2015)
    IM und IO
  • Design of an additively manufactured hydraulic directional spool valve: an industrial case study
    Item type: Journal Article
    Hofmann, Urs Christoph; Fankhauser, Matthias; Willen, Simon; et al. (2023)
    Virtual and Physical Prototyping
    An industrial case study of an additively manufactured hydraulic spool valve that was designed in close collaboration with our industrial partner Wandfluh AG is presented herein. An existing conventional valve design was redesigned for laser powder bed fusion while considering the current functional and technical requirements. The entire development process is described based on real world requirements, considering the manufacturing and post-processing constraints. The final design was manufactured, tested, and compared with the conventionally manufactured valve. The pressure drop was reduced by 60% through the valve redesign, and a weight reduction of 50% was achieved. This study is concluded by reflecting the development process and identifying potential, learnings, and challenges that can be transferred to other hydraulic components. The importance of generating a large variety of concepts in the divergent design generation phase and performing computational fluid dynamics simulations to assess the potential of these concepts are highlighted.
  • Enabling non-engineers to use engineering tools: introducing product development to pupils using knowledge-integrating systems
    Item type: Conference Paper
    Conrad, Jonas; Fox, Stephan; Hofmann, Phyllis; et al. (2021)
    Procedia CIRP ~ 31st CIRP Design Conference 2021 (CIRP Design 2021)
    Many engineering tasks are supported by tools based on innovative technologies. Powerful tools for computer aided design, simulations or programming permit a wide range of possibilities for engineers in solving complex problems. However, using these tools commonly requires extensive training or specific skills. Specialized systems that enable tool and technology usage could support novices in solving engineering tasks using embedded knowledge, lowering the hurdle of expertise required for operation. In the presented case study, knowledge-integrating systems inspired by knowledge-based engineering were developed to allow pupils to solve an engineering challenge without existing skills or prior training. To provide a realistic application context, a teaching module was developed, introducing high school students to product engineering in the form of a conceive-design-implement-operate experience with the learning goal to engage them in the STEM field. Solving the included engineering challenge required the creation, test and iteration of designs for laser cut and additive manufacturing, and code processing sensor signals for motor actuation. To evaluate the knowledge-integrating systems in their use qualitatively, a trial run was conducted. Participants were enabled to fulfil basic product engineering tasks and expressed engagement in product development and overall satisfaction. The module’s key element is an educational exoskeleton that can be controlled by electromyography signals. It is modified to eventually support a fictional character suffering from monoplegia. The module was realized accompanying the CYBATHLON, a championship for people with physical disabilities in solving everyday tasks assisted by state-of-the-art technical systems.
  • Entwicklung und Konstruktion für die Additive Fertigung
    Item type: Edited Volume
    Klahn, Christoph; Meboldt, Mirko; Fontana, Filippo; et al. (2021)
  • Entwicklung und Konstruktion für die Additive Fertigung
    Item type: Edited Volume
    Klahn, Christoph; Meboldt, Mirko; Fontana, Filippo; et al. (2018)
  • Combining Additive Manufacturing with CFRP Composites: Design Potentials
    Item type: Other Conference Item
    Türk, Daniel; Züger, Andreas; Klahn, Christoph; et al. (2015)
    ICED ~ Proceedings of the 20th International Conference on Engineering Design (ICED 15)
  • Value-driven clustering of industrial additive manufacturing applications
    Item type: Journal Article
    Fontana, Filippo; Klahn, Christoph; Meboldt, Mirko (2019)
    Journal of Manufacturing Technology Management
  • The Experience Transfer Model for New Technologies - Application on Design for Additive Manufacturing
    Item type: Conference Paper
    Leutenecker-Twelsiek, Bastian; Ferchow, Julian; Klahn, Christoph; et al. (2017)
    Industrializing Additive Manufacturing - Proceedings of Additive Manufacturing in Products and Applications - AMPA2017
    To apply new technologies in industry, it requires knowledge about the specific technology. Since a new technology, such as Additive Manufacturing (AM), enters the industry slow, the knowledge transfer must be supported. AM is capable to produce end user parts by serial production. To implement this new technology into industry an Experience Transfer Model (ETM) supports the transfer of knowledge from the academic environment to professional engineers in industry. This paper presents the concept of the ETM, which transfer experience knowledge about identification expertise and design expertise in three steps: Input of theory, implementation of the theoretical knowledge and reflection of the approach. The validation of the ETM with Swiss SME showed a successful implementation of experience knowledge.
Publications1 - 10 of 37