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Conceptual Design of Composite Crutches
Published in S. M. Sapuan, Y. Nukman, N. A. Abu Osman, R. A. Ilyas, Composites in Biomedical Applications, 2020
S. M. Sapuan, F. N. Shafiqa, M. T. Mastura, R. A. Ilyas
The conceptual phase of the design core is primarily concerned with the generation of solutions to meet the stated needs from PDS and evaluation of these solutions to select the one that is most suitable and meets the PDS. Conceptual design is an initial design of the product design process, where drawings and other illustrations or models are used. Several methods can be used to develop conceptual design, for example, brainstorming method, morphology method, combination, and attribute listing. In this chapter, the conceptual design used two stages. The first stage was known as concept generation and the second stage was concept selection. In concept generation, the creative thinking method that is based on the concept map, functional decomposition models, biomimetic method, and morphological chart was used to generate several concepts. After the development of several designs, few designs were selected by using the Pugh selection method. The selected design was evaluated in detail based on criteria that were deduced from PDS.
General introduction
Published in Adedeji B. Badiru, Handbook of Industrial and Systems Engineering, 2013
When designers are conducting usability testing, whether early in the low-fidelity prototyping stages or late in the design lifecycle, they must identify what they are going to measure, often called usability metrics. Usability metrics tend to change in nature and scope as the project moves forward. In early conceptual design phases, usability can be evaluated with a few users and focuses on the qualitative assessment of general usability (whether the task can even be accomplished using the system) and user satisfaction. Low-fidelity prototypes are given to users, who then imagine performing a very limited subset of tasks with the materials or screens (Carroll, 1995). At this point, there is usually little to no quantitative data collection; simply talking with a small number of users can yield a large amount of valuable information. As the design takes on more specific form, usability testing becomes more formalized and often quantitative. Several versions of usability questionnaires are available, and some companies have developed their own usability testing metrics. In general, effectiveness, efficiency, and subjective satisfaction are the main usability measures.
Engineering product design and development
Published in Riadh Habash, Green Engineering, 2017
Conceptual design is a series of methodical, planned, and targeted design activities from analyzing needs of users to generating conceptual products, and expressing an evolving process from crude to refined, from fuzzy to clear and from abstract to concrete (Deng et al. 2002). It is common that as much as 60%–80% of the total product cost is committed already during the concept stage of the design process. Accordingly, a design methodology focusing on this early concept stage, front-loading certain design activities to it, has a much larger impact potential than the ones focusing mainly on the DD (Ullman 2010).
A framework for mapping design for additive manufacturing knowledge for industrial and product design
Published in Journal of Engineering Design, 2018
Patrick Pradel, Zicheng Zhu, Richard Bibb, James Moultrie
Conceptual design is an initial stage of the design process in which a large number of design solutions are conceived, explored and evaluated upon a specific set of requirements or statements (Smith and Eppinger 1997; Cross 2008; Ashby 2011). Studies that provide tools or methodologies for supporting AM at the conceptual design stage are reviewed in this sub-section, which is organised in two main parts; namely DfAM for concept generation and concept selection, respectively. There is a distinct lack of prior work that seeks to provide designers with guidance during the generation of conceptual designs that take advantage of the benefits of AM. The few studies that exist tend not to have the proposed methods validated by practicing designers. There is also a lack of attention given to understanding how designers currently design products and components with AM in mind. The framework showing the methods for generating new concepts are depicted in Figure 7.