Effects of Collage Priming on Sustainable Design Idea Creation and Assessment

Author(s):  
Ting Liao ◽  
Erin F. MacDonald

Priming is a psychological technique that can alter designers’ mindsets prior to conceptual design exercises [1]. For example, priming the five senses enhanced designers’ abilities to communicate sustainability through the product features they designed [2,3]. Although the three pillars of sustainable design — social desirability, economic competitiveness, and environmental friendliness — are all important, they are not necessarily equally accessible or salient during the design process. This paper applies the collage priming method of [2] to (1) increase/improve ideas related to the sustainability pillars, in the eyes of users, and (2) reduce ownership bias and cause a more favorable judgment of others’ ideas, when compared to one’s own ideas. An experiment tests (1) and (2) for the collage priming method versus a reading preparation activity and no prime/activity for effectiveness in these two applications. The participants included graduate design student attendees at the 2016 IDETC conference and graduate engineering students at Stanford. For (1), collage priming is proven to be successful in helping designers to generate ideas that are more environmentally friendly but less successful in helping designers generate ideas related to social desirability and economic competitiveness, as judged by potential users; no more successful than a reading exercise. For (2), we find evidence that the collage priming reduces ownership bias in designers, as measured in their judgment of other (simulated) designers’ ideas, and in this case the reading exercise does not have the same effect.

2021 ◽  
Vol 13 (9) ◽  
pp. 5227
Author(s):  
Ting Liao ◽  
Erin F. MacDonald

Although three pillars of sustainable design—social desirability, economic competitiveness, and environmental friendliness—are all important, they are not necessarily equally accessible or salient during the design process. This paper applies a collage priming method to activate designers’ mindsets regarding sustainability pillars prior to conceptual design exercises, and to facilitate early-stage sustainable design. The study tests if collage priming (1) improves ideation outcome in terms of the sustainability pillars, interpreted as user desirability, cost, and environmental impact, and (2) encourages designers to further explore others’ ideas during idea evaluation. For (1), collage priming related to environmental aspect is shown to assist designers with generating more relevant ideas regarding environmental impact and more feasible ideas as compared to the control. The priming is not effective in helping designers generate ideas related to user desirability or cost, potentially because designers lack readily accessible information to be activated by priming. For (2), the collage priming related to user desirability is shown to encourage further exploration when exposed to (simulated) others’ ideas. The study shows the effectiveness of collage priming in improving environmental impact in conceptual design; it also demonstrates the existing challenges of addressing user desirability and cost.


2021 ◽  
Vol 1 ◽  
pp. 1373-1382
Author(s):  
Avril Thomson ◽  
Hilary Grierson

AbstractThe paper reports on a study that aims to gain an understanding of how senior engineering design students engage and attain throughout the various stages of the design process during a major design project. Following a literature review it sets out to answer 3 main research questionsQ1. Do students engage more with certain stages of the design process during major project work?;Q2. Do students attain better during certain phases of the design process during major project ?Q3. Is there a difference in this attainment between year groups of the same degree programme ?The methodology adopted employs an analysis of marks and an online questionnaire to collect data. Patterns and trends in how senior BEng and MEng Product Design Engineering students engage and attain within the design process are presented, identified and discussed and in turn used to inform reflection on the research questions set.


Actuators ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 133
Author(s):  
Tobias Vonderbank ◽  
Katharina Schmitz

Increasing performance in modern hydraulics is achieved by a close investigation of possible enhancements of its components. Prior research has pointed out that electromechanical actuators can form suitable alternatives to hydraulically piloted control systems. Since the requirements at these actuation systems depend on the operating conditions of the system, each actuator can be optimized to the respective hydraulic system. Considering that many different conceptual designs are suitable, the phase of conceptual design plays a decisive role during the design process. Therefore, this paper focuses on the process of developing new conceptual designs for electromechanical valve actuation systems using the method of function structures. Aiming to identify special design features, which need to be considered during the design process of electromechanical actuation systems, an exemplary actuator was designed based on the derived function structure. To highlight the potential of function structures for the development of new electromechanical valve actuation systems, two principal concepts, which allow the reduction of the necessary forces, have been developed by extending the function structure. These concepts have been experimentally investigated to identify their advantages and disadvantages.


Author(s):  
Ehud Kroll ◽  
Lauri Koskela

AbstractThe mechanism of design reasoning from function to form is suggested to consist of a two-step inference of the innovative abduction type. First is an inference from a desired functional aspect to an idea, concept, or solution principle to satisfy the function. This is followed by a second innovative abduction, from the latest concept to form, structure, or mechanism. The intermediate entity in the logical reasoning, the concept, is thus made explicit, which is significant in following and understanding a specific design process, for educating designers, and to build a logic-based computational model of design. The idea of a two-step abductive reasoning process is developed from the critical examination of several propositions made by others. We use the notion of innovative abduction in design, as opposed to such abduction where the question is about selecting among known alternatives, and we adopt a previously proposed two-step process of abductive reasoning. However, our model is different in that the two abductions used follow the syllogistic pattern of innovative abduction. In addition to using a schematic example from the literature to demonstrate our derivation, we apply the model to an existing, empirically derived method of conceptual design called “parameter analysis” and use two examples of real design processes. The two synthetic steps of the method are shown to follow the proposed double innovative abduction scheme, and the design processes are presented as sequences of double abductions from function to concept and from concept to form, with a subsequent deductive evaluation step.


Author(s):  
David G. Ullman ◽  
Thomas G. Dietterich ◽  
Larry A. Stauffer

This paper describes the task/episode accumulation model (TEA model) of non-routine mechanical design, which was developed after detailed analysis of the audio and video protocols of five mechanical designers. The model is able to explain the behavior of designers at a much finer level of detail than previous models. The key features of the model are (a) the design is constructed by incrementally refining and patching an initial conceptual design, (b) design alternatives are not considered outside the boundaries of design episodes (which are short stretches of problem solving aimed at specific goals), (c) the design process is controlled locally, primarily at the level of individual episodes. Among the implications of the model are the following: (a) CAD tools should be extended to represent the state of the design at more abstract levels, (b) CAD tools should help the designer manage constraints, and (c) CAD tools should be designed to give cognitive support to the designer.


Author(s):  
C. P. Huang ◽  
F. W. Liou ◽  
J. J. Malyamakkil ◽  
W. F. Lu

Abstract This paper presents an advisory conceptual design tool for mechanical transmission systems. Space consideration was taken into account during the design process. A prototype function tree was built in the form of knowledge-based system to transfer a designer’s idea into a set of mechanical components. An advisory expert system was also developed to help a designer in decision making. As an example, a packaging machine is designed using the developed system.


Author(s):  
Vinod Baya ◽  
Larry J. Leifer

Abstract The research reported in this paper examines the design process from an informational perspective. The study is based on the premise that there is a need to understand and formalize the information generating, accessing and analyzing behavior of designers in order to build tools and methods which can be smoothly integrated with their technical and social work environment. Results from an experimental study, conducted using the verbal protocol method, are discussed. A measure for the amount of information designers handle has been explored. A framework for analyzing the information handling behavior of designers is also presented.


2021 ◽  
Vol 11 (20) ◽  
pp. 9430
Author(s):  
Fabiola Cortes-Chavez ◽  
Alberto Rossa-Sierra ◽  
Elvia Luz Gonzalez-Muñoz

The medical device design process has a responsibility to define the characteristics of the object to ensure its correct interaction with users. This study presents a proposal to improve medical device design processes in order to increase user acceptance by considering two key factors: the user hierarchy and the relationship with the patient’s health status. The goal of this study is to address this research gap and to increase design factors with practical suggestions for the design of new medical devices. The results obtained here will help medical device designers make more informed decisions about the functions and features required in the final product during the development stage. In addition, we aim to help researchers with design process didactics that demonstrate the importance of the correct execution of the process and how the factors considered can have an impact on the final product. An experiment was conducted with 40 design engineering students who designed birthing beds via two design processes: the traditional product design process and the new design process based on hierarchies (proposed in this study). The results showed a significant increase in the user acceptance of the new birthing bed developed with the hierarchical-based design process.


2021 ◽  
Author(s):  
Rohan Prabhu ◽  
Mohammed Alsager Alzayed ◽  
Elizabeth Starkey

Abstract Empathy plays an important role in designers’ ability to relate to problems faced by others. Several researchers have studied empathy development in engineering design education; however, a majority of this work has focused on teaching designers to empathize with primary users. Little attention in empathy development research is given to empathizing with those affected in a secondary and tertiary capacity. Moreover, little research has investigated the role of students’ empathy in influencing their emphasis on sustainability, especially in the concept evaluation stage. Our aim in this paper is to explore this research gap through an experimental study with engineering students. Specifically, we introduced first-year engineering students at a large public university in the northeastern United States to a short workshop on sustainable design. We compared changes in their trait empathy and attitudes towards sustainability from before to after participating in the workshop. We also compared the relationship between students’ trait empathy, attitudes towards sustainability, and the self-perceived sustainability of their solutions in a design task. From our results, we see that students reported an increase in their beliefs and intentions towards sustainability and a decrease in their personal distress from before to after participating in the workshop. Furthermore, students’ trait empathy correlated negatively with the self-perceived sustainability of their solutions. These findings highlight the need for future work studying the role of empathy in encouraging a sustainable design mindset among designers.


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