scholarly journals Design for Product Circularity: Circular Economy Indicators With Tools Mapped Along the Engineering Design Process

2021 ◽  
Author(s):  
Michael Saidani ◽  
Harrison Kim
Keyword(s):  
Design Process ◽  
Circular Economy ◽  
Computer Aided Design ◽  
Research Work ◽  
Major Influence ◽  
Design Phase ◽  
Detailed Design ◽  
Requirements Definition ◽  
Environmental Savings ◽  
Aided Design

Abstract Monitoring the circularity potential of products and materials is key to ensure environmental savings and economic profitability of circular economy loops, such as reuse, remanufacturing, or recycling. The choices and decisions made during the product design phase have a major influence and impact on the circularity performance of products. While numerous indicators and tools have been recently developed to assess, manage, and accelerate the transition to a more circular economy, their application and usability during the early design phases of products are often overlooked. Based on a screening of several tens of circular economy indicators, the present research work identified twelve product-centric circularity indicators, each of them coming with a computational tool, to be deployed during the design process in order to improve the circularity potential of products. To help designers and engineers selecting the appropriate solution, these circularity indicators and tools are positioned on a generic five-step design process, namely: requirements definition, conceptual design, detailed design, designs comparison, product monitoring and communication. Concrete examples are given on how these indicators and their assessment framework can support the design of more circular products. Current shortcomings of available approaches are finally highlighted and discussed (such as the lack of c-indicators for the detailed design phase or linkage with computer-aided design software) for an augmented integration of such promising circularity indicators and their associated tools within the design and development process of products.

Exploring the Engineering Design Process Through Computer-Aided Design and 3-D Printing

Science Scope ◽  
2017 ◽  
Vol 041 (01) ◽  
Author(s):  
Nicholas Garafolo ◽  
Nidaa Makki ◽  
Katrina Halasa ◽  
Wondimu Ahmed ◽  
Kristin Koskey ◽  
...  
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Computer Aided Design ◽  
Engineering Design Process ◽  
Computer Aided ◽  
Aided Design

Performing Detailed Design Reviews of a U.S. Navy Surface Combatant within an Integrated Data Environment

2009 ◽  
Author(s):  
G. R. Grogan ◽  
J. L. Borthen
Keyword(s):  
Computer Aided Design ◽  
Effective Means ◽  
Government Accountability ◽  
Construction Costs ◽  
Detailed Design ◽  
Efficient Communication ◽  
Surface Combatant ◽  
Data Environment ◽  
Aided Design ◽  
Communication Methods

Between November 2006 and March 2009, the U.S. Navy’s first ZUMWALT class Guided Missile Destroyer, DDG 1000, underwent Detailed Design. According to a Government Accountability Office shipbuilding study in 2005, late changes to a ship’s design is recognized as the primary factor contributing to increasing ship construction costs. Therefore a strict Detailed Design review process was implemented for DDG 1000 that included improved Computer Aided Design tools and more efficient communication methods than previous ship Detailed Design efforts. The actual benefit of the design reviews of the ZUMWALT Class will not truly be known until after the Lead Ship has been commissioned, however, the design reviews, along with the unprecedented involvement by stakeholders via an Integrated Data Environment, have already proved to be an effective means for reducing the probability that setbacks will be encountered at the waterfront.

Analysis of Jansen Walking Mechanism Using CAD

2010 ◽  
Vol 166-167 ◽  
pp. 297-302 ◽  
Author(s):  
Florina Moldovan ◽  
Valer Dolga
Keyword(s):  
Design Process ◽  
Computer Aided Design ◽  
Walking Robots ◽  
Walking Robot ◽  
Short Term ◽  
Computer Aided ◽  
New Type ◽  
Walking Mechanism ◽  
Aided Design ◽  
Competitive Products

In this article is presented a short classification for walking robots that are based on leg locomotion and the main objectives that walking robots designers must achieve. The leg configuration of the walking robot is essential for obtaining a stable motion. Computer aided design process offers certain advantages for designers who attend to realize competitive products with fewer errors and in a short term. The aim of this article is to present the graphical results of the kinematic analysis of a new type of walking mechanism designed by Dutch physicist and sculptor Theo Jansen using Pro Engineer program and SAM, in order to compare the results.

Lines, triangles, and nets: A framework for designing input technologies and interaction techniques for computer-aided design

2019 ◽  
Vol 17 (4) ◽  
pp. 357-381
Author(s):  
Emek Erdolu
Keyword(s):  
Human Computer Interaction ◽  
Computer Aided Design ◽  
Research Work ◽  
Interaction Techniques ◽  
Experimental Systems ◽  
Multimodal Systems ◽  
Alternative Systems ◽  
Computer Aided ◽  
Aided Design ◽  
Computer Interaction

This article serves to the larger quest for increasing our capacities as designers, researchers, and scholars in understanding and developing human-computer interaction in computer-aided design. The central question is on how to ground the related research work in input technologies and interaction techniques for computer-aided design applications, which primarily focus on technology and implementation, within the actual territories of computer-aided design processes. To discuss that, the article first reviews a collection of research studies and projects that present input technologies and interaction techniques developed as alternative or complimentary to the mouse as used in computer-aided design applications. Based on the mode of interaction, these studies and projects are traced in four categories: hand-mediated systems that involve gesture- and touch-based techniques, multimodal systems that combine various ways of interaction including speech-based techniques, experimental systems such as brain-computer interaction and emotive-based techniques, and explorations in virtual reality- and augmented reality-based systems. The article then critically examines the limitations of these alternative systems related to the ways they have been envisioned, designed, and situated in studies as well as of the two existing research bases in human-computer interaction in which these studies could potentially be grounded and improved. The substance of examination is what is conceptualized as “frameworks of thought”—on variables and interrelations as elements of consideration within these efforts. Building upon the existing frameworks of thought, the final part discusses an alternative as a vehicle for incorporating layers of the material cultures of computer-aided design in designing, analyzing, and evaluating computer-aided design-geared input technologies and interaction techniques. The alternative framework offers the potential to help generate richer questions, considerations, and avenues of investigation.

Designing Futuristic Eyeglasses With Innovative Marketing Strategy Using Product Life Cycle Management

2014 ◽  
Vol 1 (1) ◽  
pp. 209-214
Author(s):  
Ahmed Mohsin Khalil ◽  
Georgiana Dobrota ◽  
Susu Paul ◽  
Paul Dan Brindasu
Keyword(s):  
Life Cycle ◽  
Computer Aided Design ◽  
Product Life Cycle ◽  
Research Work ◽  
Life Cycle Management ◽  
Market Strategy ◽  
Product Life ◽  
Product Life Cycle Management ◽  
Smart Glasses ◽  
Aided Design

AbstractGlasses are becoming more and more important as part of our daily life. The product is an interesting and general. People's needs in this regards are different. In this research work a case study of product life cycle management of smart glasses for future use is presented. Research is thorough and quantitative. Basic objectives that were to establish are the reasons for wearing sunglasses, the most important characteristics that glasses must meet, setting the fashion trends for glasses and provides market strategy for selling glasses until recycling. On the basis of research done on sample of 30 people, different option were put in front of them the most important were chosen, which are, built-in speaker for playback, capacity to store memory, connectivity to external devices (PC) and Radio/MP3. Market strategy is also set for the glasses from factory to the recycling including customer feedback, environmental concerns. Conceptual design of the glasses using computer aided design is also presented. This multidimensional product is an achievement in innovation, entrepreneurship and gives good insight into the implementation of engineering education through product life cycle.

Automated Thermal and Stress Preliminary Analyses Applied to a Turbine Rotor

2016 ◽  
Author(s):  
Maxime Moret ◽  
Alexandre Delecourt ◽  
Hany Moustapha ◽  
Francois Garnier ◽  
Acher-Igal Abenhaim
Keyword(s):  
Design Process ◽  
Turbine Rotor ◽  
Tip Clearance ◽  
Conceptual System ◽  
Preliminary Design ◽  
Design Phase ◽  
Detailed Design ◽  
Turbine Engine ◽  
Cad Models ◽  
The Impact

The use of Multidisciplinary Design Optimization (MDO) techniques at the preliminary design phase (PMDO) of a gas turbine engine allows investing more effort at the pre-detailed phase in order to prevent the selection of an unsatisfactory concept early in the design process. Considering the impact of the turbine tip clearance on an engine’s efficiency, an accurate tool to predict the tip gap is a mandatory step towards the implementation of a full PMDO system for the turbine design. Tip clearance calculation is a good candidate for PMDO technique implementation considering that it implies various analyses conducted on both the rotor and stator. As a first step to the development of such tip clearance calculator satisfying PMDO principles, the present work explores the automation feasibility of the whole analysis phase of a turbine rotor preliminary design process and the potential increase in the accuracy of results and time gains. The proposed conceptual system integrates a thermal boundary conditions automated calculator and interacts with a simplified air system generator and with several conception tools based on parameterized CAD models. Great improvements were found when comparing this work’s analysis results with regular pre-detailed level tools, as they revealed to be close to the one generated by the detailed design tools used as target. Moreover, this design process revealed to be faster than a common preliminary design phase while leading to a reduction of time spent at the detailed design phase. By requiring fewer user inputs, this system decreases the risk of human errors while entirely leaving the important decisions to the designer.

scholarly journals Computer-aided design system for control moment gyroscope

2018 ◽  
Vol 158 ◽  
pp. 01021
Author(s):  
Tamara Kostyuchenko ◽  
Nelya Indygasheva
Keyword(s):  
Design Process ◽  
Computer Aided Design ◽  
Electromechanical System ◽  
Design System ◽  
Optimal Parameters ◽  
Control Moment Gyroscope ◽  
Control Moment ◽  
Computer Aided ◽  
Aided Design ◽  
Orientation Systems

Control moment gyroscope or two-axis balking gyroscope is used in spacecraft orientation systems. The control moment gyroscope is a complex electromechanical system with different parameters which connect by means of specific instant and inverse dependences. This fact could complicate the design process as of getting the optimal parameters the search of construction variations becomes harder. To simplify the control moment gyroscope designing process and increase its efficiency the computer-aided design system could be as highly useful. The computer-aided design system which is used in the present research and described in the article consists of five main subsystems. They cover the main stages of control moment gyroscope designing.

A CAD Template Approach to Support Web-Based Customer Centric Product Design

2005 ◽  
Vol 5 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Zahed Siddique ◽  
Karunakar Boddu
Keyword(s):  
Product Design ◽  
Design Process ◽  
Mass Customization ◽  
Computer Aided Design ◽  
Cad Model ◽  
Entire Family ◽  
Web Based ◽  
Computer Aided ◽  
Aided Design ◽  
Configurable Products

In order to provide products that can be tailored to the need of the customer, it is necessary to integrate the customer into the design process. In this paper we present a mass customization computer-aided design (CAD) framework that helps to integrate the customer into the design of user-configurable products. A template approach, which considers both modularity and scaling, is utilized to concisely represent a CAD model of the entire family. The system accepts user selections and parameters to automatically create a CAD model of the customized product in real time and then shows the model to the user. The system is implemented using PRO/ENGINEER and demonstrated through customization of bicycle frames.

Computer-aided design versus sketching: An exploratory case study

2012 ◽  
Vol 26 (3) ◽  
pp. 317-335 ◽  
Author(s):  
David Veisz ◽  
Essam Z. Namouz ◽  
Shraddha Joshi ◽  
Joshua D Summers
Keyword(s):  
Design Process ◽  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Computer Assisted ◽  
Cad Tools ◽  
Design Project ◽  
Computer Aided ◽  
Aided Design ◽  
The Impact

AbstractThis paper presents a preliminary comparison between the role of computer-aided design (CAD) and sketching in engineering through a case study of a senior design project and interviews with industry and academia. The design team consisted of four senior level mechanical engineering students each with less than 1 year of professional experience are observed while completing an industry sponsored mechanical engineering capstone design project across a 17 week semester. Factors investigated include what CAD tools are used, when in the design process they are implemented, the justification for their use from the students' perspectives, the actual knowledge gained from their use, the impact on the final designed artifact, and the contributions of any sketches generated. At each design step, comparisons are made between CAD and sketching. The students implemented CAD tools at the onset of the project, generally failing to realize gains in design efficiency or effectiveness in the early conceptual phases of the design process. As the design became more concrete, the team was able to recognize clear gains in both efficiency and effectiveness through the use of computer assisted design programs. This study is augmented by interviews with novice and experienced industry users and academic instructors to align the trends observed in the case study with industry practice and educational emphasis. A disconnect in the perceived capability of CAD tools was found between novice and experienced user groups. Opinions on the importance of sketching skills differed between novice educators and novice industry professionals, suggesting that there is a change of opinion as to the importance of sketching formed when recent graduates transition from academia to industry. The results suggest that there is a need to emphasize the importance of sketching and a deeper understanding as to the true utility of CAD tools at each stage of the design process.

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