Towards Fewer Design Failures

1994 ◽  
Author(s):  
Zhihui Yao ◽  
Aylmer L. Johnson
Keyword(s):  
Design Process ◽  
Constraint Satisfaction ◽  
Systematic Design ◽  
Early Design ◽  
Joint Design ◽  
Functional Modelling ◽  
Modelling System ◽  
Knowledge Hierarchy

Abstract Many designs fail because one or more checks are not done, or are done too late during the design process. A functional modelling system is presented, which provides systematic design checking at early design phases by means of constraint satisfaction. However, problems can occur if the design to be checked involves too many constraints. This paper presents some extended research, which establishes a knowledge hierarchy for managing the mathematical constraints, so that the computer can process large designs. A case study of fastening joint design using this hierarchy is discussed.

scholarly journals CASE STUDY IN SYSTEMATIC DESIGN ENGINEERING – BOW THRUSTER COVERS

2012 ◽  
Author(s):  
W Ernst Eder
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Design Science ◽  
Process Engineering ◽  
Design Engineering ◽  
Learning Design ◽  
Systematic Design ◽  
Methodical Approach ◽  
Novel Design

Students learning design engineering at times need a good example of procedure for novel design engineering. The systematic heuristic-strategic use of a theory to guide the design process – Engineering Design Science – and the methodical design process followed in this case study is only necessary in limited situations. The full procedure should be learned, such that the student can select appropriate parts for other applications. Creativity is usually characterized by a wide search for solutions, especially those that are innovative. The search can be helped by this systematic and methodical approach. This case example is presented to show application of the recommended method, and the expected scope of the output, with emphasis on the stages of conceptualizing. The case follows a novel design problem of a mechanism to open and close the bow thruster covers for the Caravan Stage Barge.

Early Design Modeling and Simulation of Behaviors: Case Study of Mobile Work Machine

2009 ◽  
Author(s):  
William Brace ◽  
Eric Coatane´a ◽  
Heikki Kauranne ◽  
Matti Heiska
Keyword(s):  
Design Process ◽  
Simulation Models ◽  
Integrated Approach ◽  
Simulation Framework ◽  
Early Design ◽  
Early Evaluation ◽  
Design Structure ◽  
Qualitative Physics ◽  
Early Design Phase

The early evaluation of a proposed function structure for a product and also, the possibility to expose the potential failures related to this provides that the design process can be modeled in its entirety. However, so far there are no existed suitable models for the early phase of design process. This article presents an integrated approach aimed to explore the behaviors of concept designs in the early design phase. The approach is founded on a combination of Petri net, π-numbers, qualitative physics principles and Design Structure Matrix. The final aim is to implement this method on the SysML modeling language to integrate a simulation approach that is initially not standardized in the language. A second interest of the approach is to provide a coherent simulation framework that can be used as a reference to verify the coherency of other simulation models further in the design process.

scholarly journals CASE STUDY IN SYSTEMATIC DESIGN ENGINEERING – STAGE BARGE GANGWAY

2013 ◽  
Author(s):  
W. Ernst Eder
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Design Problem ◽  
Design Science ◽  
Process Engineering ◽  
Design Engineering ◽  
Learning Design ◽  
Systematic Design ◽  
Novel Design

Students learning design engineering at times need a good example of procedure for novel design engineering. The systematic heuristic-strategic use of a theory to guide the design process – Engineering Design Science – and the methodical design process followed in this case study is only necessary in limited situations. The full procedure should be learned, such that the studentcan select appropriate parts for other applications.This case example is presented to show application of the recommended method, and the expected scope of the output, with emphasis on the stages of conceptualizing. The case follows a novel design problem of a gangway for ship-shore transfer for the Caravan Stage Barge.

Case Study in Systematic Design Engineering: Smoke Gas Dust Precipitation

2009 ◽  
Author(s):  
W. Ernst Eder
Keyword(s):  
Design Process ◽  
Design Science ◽  
Precipitation Process ◽  
Design Engineering ◽  
Learning Design ◽  
Systematic Design ◽  
Methodical Approach ◽  
Novel Design ◽  
Dust Precipitation

Students learning design engineering at times need a good example of procedure for novel design engineering. The systematic heuristic-strategic use of a theory to guide the design process — Engineering Design Science — and methodical design process followed in this case study is only necessary in limited situations. The full procedure should be learned, such that the student can select appropriate parts for other applications. Creativity is usually characterized by a wide search for solutions, especially those that are innovative. The search can be helped by this systematic and methodical approach. This case example is presented to show application of the recommended method, and the expected scope of the output, with emphasis on the stages of conceptualizing. The case follows a novel design problem of a smoke gas dust precipitation process and the necessary technical system, including a sub-problem of a rapper for dust removal.

scholarly journals Integration of Sustainability Into Early Design Through Working Knowledge Model and Visual Tools

2009 ◽  
Author(s):  
Srikanth Devanathan ◽  
Pranav Koushik ◽  
Fu Zhao ◽  
Karthik Ramani
Keyword(s):  
Design Process ◽  
Environmental Sustainability ◽  
Modern Society ◽  
Design Stage ◽  
Knowledge Model ◽  
Early Design ◽  
Environmentally Sustainable ◽  
Early Design Stage ◽  
And Performance

The issue of environmental sustainability, which is unprecedented in both magnitude and complexity, presents one of the biggest challenges faced by modern society. Engineers, including mechanical engineers, can make significant contribution to the development of solutions to this problem by designing products and processes that are more environmentally sustainable. It is critical that engineers take a paradigm shift of product design i.e. from cost and performance centered to balance of economic, environmental, and societal consideration. Although there have been quite a few design for environment (DfE, or ecodesign) tools developed, so far these tools have only achieved limited industrial penetration: they are either too qualitative/subjective to be used by designers with limited experiences, or too quantitative, costly and time consuming and thus cannot be used during the design process specially during the early design stage. This paper develops a novel, semi-quantitative ecodesign tool that targets specially on early design process. The new tool is a combination of environmental life cycle assessment, working knowledge model, and visual tools such as QFD, functional-component matrix, and Pugh chart. Redesign of staplers is selected as a case study to demonstrate the use of the proposed tool. Efforts are on going to confirm that the new design generated using this new tool does have improved environmental performance.

Case Study in Systematic Design Engineering: Automotive Oil Pump Redesign

2010 ◽  
Author(s):  
W. Ernst Eder
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Design Science ◽  
Process Engineering ◽  
Design Engineering ◽  
Learning Design ◽  
Systematic Design ◽  
Oil Pump ◽  
Methodical Approach

Students learning design engineering at times need a good example of procedure for design engineering, both for novel problems and for redesign. The systematic heuristic-strategic use of a theory to guide the design process — Engineering Design Science — and the methodical design process followed in this case study is only necessary in limited situations. The full procedure should be learned, such that the student can select appropriate parts for other applications. Creativity is usually characterized by a wide search for solutions, especially those that are innovative. The search can be helped by this systematic and methodical approach. This case example is presented to show application of the recommended method for redesign, and the expected scope of the output, with emphasis on the stages of conceptualizing. The case follows a redesign problem of an automotive oil pump.

Case Study in Systematic Design Engineering: Trapeze Demonstration Rig

2010 ◽  
Author(s):  
W. Ernst Eder
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Design Science ◽  
Process Engineering ◽  
Design Engineering ◽  
Learning Design ◽  
Systematic Design ◽  
Methodical Approach ◽  
Novel Design

Students learning design engineering at times need a good example of procedure for novel design engineering. The systematic heuristic-strategic use of a theory to guide the design process — Engineering Design Science — and the methodical design process followed in this case study is only necessary in limited situations. The full procedure should be learned, such that the student can select appropriate parts for other applications. Creativity is usually characterized by a wide search for solutions, especially those that are innovative. The search can be helped by this systematic and methodical approach. This case example is presented to show application of the recommended method, and the expected scope of the output, with emphasis on the stages of conceptualizing. The case follows a novel design problem of a rig for a trapeze demonstration team to be used outdoors.

scholarly journals Developing products with set-based design: How to set up an idea portfolio and a team organization to establish design feasibility

2016 ◽  
Vol 30 (3) ◽  
pp. 235-249 ◽  
Author(s):  
Anja Schulze
Keyword(s):  
Design Process ◽  
Early Design ◽  
Study Approach ◽  
Innovative Products ◽  
Set Based Design ◽  
Idea Evaluation ◽  
Set Up ◽  
High Level ◽  
Design Ideas

AbstractPrior research has identified set-based design as a method that accounts for the high level of uncertainty that is associated with the design of innovative products or systems. Rather than precisely specifying a system architecture in the early design stages, set-based design builds on designing a system and its architecture in an evolutionary way. The literature on set-based design has studied how a system's design evolves by moving from a number of optional design ideas to the final system through gradually eliminating unfeasible design ideas and continually developing design ideas for which engineers increasingly establish feasibility. However, little is known about how firms set up the design process and the organization to successfully create new products with set-based design. Our research contributes to closing this gap. First, we study how firms determine the number (i.e., portfolio) of design ideas to pursue, an important step of the early design process. Second, we study how firms organize for set-based design by assigning teams to develop design ideas and eventually design a system's architecture. Our research uses an exploratory case study approach, investigating five cases in three different firms. First, we find that the early design process is characterized by the absence of formal idea evaluation and selection. Instead, firms start to pursue all initially created design ideas, evaluating and selecting them in an evolutionary manner as the design project progresses. Second, we identify two organizational approaches associated with set-based design: assign one team to pursue all ideas or assign one team per design idea.

Concurrent Product Design: A Case Study on the Pico Radio Test Bed

2002 ◽  
Author(s):  
Daniel L. Odell ◽  
Paul K. Wright
Keyword(s):  
Product Design ◽  
Design Process ◽  
Mechanical Design ◽  
Wireless Networking ◽  
Systematic Design ◽  
Test Bed ◽  
Media Access ◽  
Design Constraints ◽  
Three Generations

This paper presents a case study on the mechanical design and fabrication of the Pico Radio Test Bed: a wireless networking node for experimentation with applications, networking, media access layer design, and position locating algorithms. Particular focus is placed on the systematic design process and resolving coupling design constraints between the mechanical and electrical domains. Three generations of the design are presented to demonstrate the evolution of the design as conflicts arose, problems were noticed, and requirements changed.

Developing design literacy through brand-based artefacts

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Catarina LELIS
Keyword(s):  
Empirical Study ◽  
Focus Groups ◽  
Design Process ◽  
Basic Design ◽  
Willingness To Participate ◽  
Socially Responsible ◽  
Interaction Structure ◽  
Functional Prototype ◽  
High Willingness

The brand is a powerful representational and identification-led asset that can be used to engage staff in creative, sustainable and developmental activities. Being a brand the result of, foremost, a design exercise, it is fair to suppose that it can be a relevant resource for the advancement of design literacy within organisational contexts. The main objective of this paper was to test and validate an interaction structure for an informed co-design process on visual brand artefacts. To carry on the empirical study, a university was chosen as case study as these contexts are generally rich in employee diversity. A non-functional prototype was designed, and walkthroughs were performed in five focus groups held with staff. The latter evidenced a need/wish to engage with basic design principles and high willingness to participate in the creation of brand design artefacts, mostly with the purposeof increasing its consistent use and innovate in its representation possibilities, whilst augmenting the brand’s socially responsible values.

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