Perception-centric design considerations for low-cost haptic emulation in prototypes
Mike Miroslav Wharton, Christopher Michael Jason Cox, James Gopsill, Aman Kukreja, Chris Snider
University of Bristol, United Kingdom
User-testing is crucial in modern product design. The perception-centric design philosophy aims to cut costs and improve responses to low-cost prototypes by including aspects like thermal properties, texture, weight, sound, and haptic feedback. This paper introduces a set of considerations for integrating low-cost vibrotactile haptics into prototypes. Derived using an action-based research process, it addresses product characterisation, actuation, control, and integration. Multi-sensory prototypes in early-stage design could be vital for the sustainable prototyping of the future.
New methodology for the characterization of 3D model reconstructions to meet conditions of input data and requirements of downstream applications
Robert Joost, Stephan Mönchinger, Kai Lindow
Fraunhofer Institute for Production Systems and Design Technology IPK, Germany
In the field of 3D model reconstruction, manifold methods have been developed that derive CAD models from 3D scan data. Opposed to classical CAD modelling, where surface and solid modelling exist, a further diversification of modelling techniques is observed, caused by different methods to build up the geometry. This research introduces a new classification, the so-called Level of Complexities. It can be applied to the complete Reverse Engineering process chain and lays the foundation for further research on how to match requirements arising from all process steps and downstream applications.
An approach for reverse engineering and redesign of additive manufactured spare parts
Marija Rešetar1, Filip Valjak1,2, Marina Grabar Branilović3, Mario Šercer3, Nenad Bojčetić1
1University of Zagreb Faculty of Mechanical Engineering and Naval Architecture, Croatia; 2University of Zagreb Faculty of Architecture, School of Design, Croatia; 3Metal Centre Čakovec, Croatia
The spare parts play a vital role in sustaining the operation and longevity of products and systems, but their unavailability can lead to prolonged downtime or expensive replacements. The integration of 3D scanning and Additive Manufacturing (AM) presents a promising path for spare part production. However, to utilise the full potential of AM, sometimes, redesign of the original part is needed. This paper investigates and proposes a new approach that integrates reverse engineering and redesign of an original part based on functional analysis to support the manufacturing of AM spare parts.
What can we learn from outstanding designers? The relationship between design expertise and prototyping
Birgit Jobst1, Katja Thoring2, Petra Badke-Schaub1
1Delft University of Technology, The Netherlands; 2Technical University of Munich, Germany
This paper contributes with insights regarding design expertise and prototyping. Seven high performers – Outstanding Designers – were interviewed to learn about their prototyping activities. The Outstanding Designers emphasised prototyping for reflection, gaining certainty, and cooperating with clients. They expressed a strong attachment regarding the use of prototyping that results in specific routines. We call this behaviour the Outstanding Designers’ bonding with prototyping. The main insights were synthesised into a model outlining the relation between design expertise and prototyping.
A novel heuristic approach to detect induced forming defects using point cloud scans
Muhammad Shahrukh Saeed1,2, Sheharyar Faisal3, Boris Eisenbart1, Matthias Kreimeyer2, Muhammad Hamas Khan4, Muhammad Zeeshan Arshad4, Racim Radjef1, Markus Wagner2, Eiman Nadeem3
1Swinburne University of Technology, Australia; 2University of Stuttgart, Germany; 3National University of Science and Technology, Pakistan; 4Technical University of Munich, Germany
The research paper delves into the importance of point cloud data obtained from 3D scanning technology ensuring quality control in industrial settings. It presents a new heuristic approach that utilizes the wavelet algorithm and other techniques to detect and characterize induced forming defects accurately. The proposed approach offers more flexibility, ease of use, and better results based on descriptive and prescriptive analyses from DRM. The results demonstrate that the wavelet algorithm was successful in identifying and characterizing forming defects in point cloud data.
Criticality-based planning of prototype sequences
Stefan Zorn, Tobias Glaser, Kilian Gericke
University of Rostock, Germany
The understanding of prototyping has changed in recent years to an approach that accompanies the product development process. This paper examines whether classic approaches from product development are also suitable for planning prototyping sequences. The stepwise process-oriented and the problem-oriented approach are discussed. A criticality assessment is proposed as a metric for the prioritization of the functional areas and a procedure is derived from this. The procedure is illustrated using an example. The result is discussed and future steps are suggested.
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