scholarly journals Product design and recyclability: How statistical entropy can form a bridge between these concepts - A case study of a smartphone

2022 ◽  
Vol 331 ◽  
pp. 129971
Author(s):  
Caroline Roithner ◽  
Oliver Cencic ◽  
Helmut Rechberger
Keyword(s):  
Product Design ◽  
Statistical Entropy

scholarly journals Extending Multilevel Statistical Entropy Analysis towards Plastic Recyclability Prediction

2021 ◽  
Vol 13 (6) ◽  
pp. 3553
Author(s):  
Philippe Nimmegeers ◽  
Alexej Parchomenko ◽  
Paul De Meulenaere ◽  
Dagmar R. D’hooge ◽  
Paul H. M. Van Steenberge ◽  
...  
Keyword(s):  
Circular Economy ◽  
Real Life ◽  
Plastic Waste ◽  
Entropy Analysis ◽  
Waste Collection ◽  
Statistical Entropy ◽  
Waste Streams ◽  
Material Component ◽  
Future Work

Multilevel statistical entropy analysis (SEA) is a method that has been recently proposed to evaluate circular economy strategies on the material, component and product levels to identify critical stages of resource and functionality losses. However, the comparison of technological alternatives may be difficult, and equal entropies do not necessarily correspond with equal recyclability. A coupling with energy consumption aspects is strongly recommended but largely lacking. The aim of this paper is to improve the multilevel SEA method to reliably assess the recyclability of plastics. Therefore, the multilevel SEA method is first applied to a conceptual case study of a fictitious bag filled with plastics, and the possibilities and limitations of the method are highlighted. Subsequently, it is proposed to extend the method with the computation of the relative decomposition energies of components and products. Finally, two recyclability metrics are proposed. A plastic waste collection bag filled with plastic bottles is used as a case study to illustrate the potential of the developed extended multilevel SEA method. The proposed extension allows us to estimate the recyclability of plastics. In future work, this method will be refined and other potential extensions will be studied together with applications to real-life plastic products and plastic waste streams.

scholarly journals Cyber-Empathic Design: A Data Driven Framework for Product Design

2016 ◽  
Author(s):  
Dipanjan D. Ghosh ◽  
Junghan Kim ◽  
Andrew Olewnik ◽  
Arun Lakshmanan ◽  
Kemper E. Lewis
Keyword(s):  
Product Design ◽  
Structural Equation ◽  
Design Space ◽  
Equation Modeling ◽  
Design Decision ◽  
Interaction Data ◽  
Model Framework ◽  
Empathic Design ◽  
Product Interaction

One of the critical tasks in product design is to map information from the consumer space to the design space. Currently, this process is largely dependent on the designer to identify and map how psychological and consumer level factors relate to engineered product attributes. In this way current methodologies lack provision to test a designer’s cognitive reasoning and could therefore introduce bias while mapping from consumer to design space. Also, current dominant frameworks do not include user-product interaction data in design decision making and neither do they assist designers in understanding why a consumer has a particular perception about a product. This paper proposes a new framework — Cyber-Empathic Design — where user-product interaction data is acquired via embedded sensors in the products. To understand the motivations behind consumer perceptions, a network of latent constructs is used which forms a causal model framework. Structural Equation Modeling is used as the parameter estimation and hypothesis testing technique making the framework falsifiable in nature. To demonstrate the framework and demonstrate its effectiveness a case study of sensor integrated shoes is presented in this work, where two models are compared — one survey based and using the Cyber-Empathic framework model. It is shown that the Cyber-Empathic framework results in improved fit. The case study also demonstrates the technique to test a designers’ cognitive hypothesis.

Product Form Evolution

2011 ◽  
pp. 499-512 ◽  
Author(s):  
Andrew Muir Wood ◽  
James Moultrie ◽  
Claudia Eckert
Keyword(s):  
Product Design ◽  
Development Strategies ◽  
Consumer Perception ◽  
Product Form ◽  
Design Teams ◽  
Design Strategies ◽  
Structured Interviews ◽  
Product Forms ◽  
Over Time

Companies are coming round to the idea that function and form are complimentary factors in improving the user’s experience of a product and competing in today’s saturated consumer goods markets. However, consumer perception of form is constantly changing, and this manifests itself in the evolving forms of the products that they adopt. From clothes to cameras to cars, change in form is inevitable, and design teams must account for these trends in their product design and development strategies. Through literature, semi-structured interviews with design and trend practitioners, and an archival case study of mobile phone evolution, the authors have developed theories about the continuities that occur in product forms over time, and the forces that can disrupt this behaviour. They then go on to suggest how this view of form as evolving trajectories can benefit future product design strategies.

scholarly journals Design for and from Recycling: A Circular Ecodesign Approach to Improve the Circular Economy

2020 ◽  
Vol 12 (23) ◽  
pp. 9861
Author(s):  
Jorge Martínez Leal ◽  
Stéphane Pompidou ◽  
Carole Charbuillet ◽  
Nicolas Perry
Keyword(s):  
Product Design ◽  
End Of Life ◽  
Circular Economy ◽  
Raw Materials ◽  
Time Lag ◽  
Design Guidelines ◽  
Design Phase ◽  
Design For Recycling ◽  
Circular Design

In the context of a circular economy, one can observe that (i) recycling chains are not adapted enough to the end-of-life products they have to process and that (ii) products are not sufficiently well designed either to integrate at best their target recycling chain. Therefore, a synergy between product designers and recycling-chains stakeholders is lacking, mainly due to their weak communication and the time-lag between the product design phase and its end-of-life treatment. Many Design for Recycling approaches coexist in the literature. However, to fully develop a circular economy, Design from Recycling also has to be taken into account. Thus Re-Cycling, a complete circular design approach, is proposed. First, a design for recycling methodology linking recyclability assessment to product design guidelines is proposed. Then, a design from recycling methodology is developed to assess the convenience of using secondary raw materials in the design phase. The recyclability of a smartphone and the convenience of using recycled materials in a new cycle are both analyzed to demonstrate our proposal. The Fairphone 2® and its treatment by the WEEE French takeback scheme are used as a case study.

Modular product design for additive manufacturing of satellite components: maximising product value using genetic algorithms

2019 ◽  
Vol 27 (4) ◽  
pp. 331-346 ◽  
Author(s):  
Olivia Borgue ◽  
Massimo Panarotto ◽  
Ola Isaksson
Keyword(s):  
Additive Manufacturing ◽  
Product Design ◽  
Design Concepts ◽  
Modular Product ◽  
Trade Offs ◽  
Function Modelling ◽  
Part Consolidation ◽  
Component Interface ◽  
Optimisation Algorithms

For space manufacturers, additive manufacturing promises to dramatically reduce weight and costs by means of integral designs achieved through part consolidation. However, integrated designs hinder the ability to change and service components over time – actually increasing costs – which is instead enabled by highly modular designs. Finding the optimal trade-off between integral and modular designs in additive manufacturing is of critical importance. In this article, a product modularisation methodology is proposed for supporting such trade-offs. The methodology is based on combining function modelling with optimisation algorithms. It evaluates product design concepts with respect to product adaptability, component interface costs, manufacturing costs and cost of post-processing activities. The developed product modularisation methodology is derived from data collected through a series of workshops with industrial practitioners from three different manufacturer companies of space products. The implementation of the methodology is demonstrated in a case study featuring the redesign of a satellite antenna.

A Comparison of Haptic Sketching and Digital Sketching

2019 ◽  
Vol 15 (2) ◽  
pp. 146-161
Author(s):  
Tom Page
Keyword(s):  
Product Design ◽  
Design Process ◽  
Current Literature ◽  
Strong Evidence ◽  
Effective Communication ◽  
Undergraduate Curriculum ◽  
Design Students ◽  
The Relationship

This article compares and contrasts the use of haptic and digital sketching in the design process. It investigates the preferred sketching method of final year design students. In addition, it examines the relationship between effective communication and the use of haptic and digital sketching. A case study involving ten final year students studying product design courses at Nottingham Trent University was undertaken. The text explores the current literature and identifies the benefits of using the two methods. The inclusion of digital sketching tutorials in the undergraduate curriculum is discussed as well as the option of replacing haptic with digital sketching. The study concludes that while a wider survey with students from other design courses would be useful, the results provide strong evidence that final year students currently prefer haptic to digital sketching as an essential part of the design process.

Framing Sustainability in Human-Centered Product Design

2009 ◽  
Author(s):  
Lora A. Oehlberg ◽  
Alice M. Agogino ◽  
Sara L. Beckman
Keyword(s):  
Product Design ◽  
Mission Statement ◽  
Consumer Products ◽  
User Needs ◽  
User Research ◽  
Sustainable Solutions ◽  
Sustainable Products ◽  
Trade Offs ◽  
Minimal Environmental Impact

Engineers today have access to a myriad of tools for developing sustainable products that have minimal environmental impact. Although consumer interest in sustainability is increasing, it is still not foremost on the minds of many consumers. Engineers are thus faced with the dilemma of developing sustainable solutions for consumers who may not yet want or be able to articulate sustainability needs. We explore this issue by examining user research conducted by students in a graduate-level product design course. We present findings on how users define and describe sustainability, how sustainability needs interact with other user needs, and what tradeoffs people make and feelings people have when faced with sustainability trade-offs. We present a case study of one design team’s findings about sustainability, and how those findings affected the formulation of the team’s mission statement and product strategy. Based on these results, we propose recommendations for how to facilitate the design of innovative and sustainable consumer products.

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