A Reverse Glue Approach to Automated Construction of Multi-Piece Molds

2003 ◽  
Author(s):  
Yong Chen ◽  
David W. Rosen
Keyword(s):  
Design Process ◽  
Problem Definition ◽  
Mold Cavity ◽  
Mold Design ◽  
Difficult Time ◽  
Construction Step ◽  
Efficiency And Effectiveness ◽  
Definition Of ◽  
Face Generation ◽  
Construction Algorithms

Mold design can be a difficult, time-consuming process. Determining how to split a mold cavity into multiple mold pieces (e.g., core, cavity) manually can be a tedious process. This paper focuses on the mold construction step of the automated mold design process. By investigating glue operations and its relations with parting faces, an approach based on reverse glue operation is presented. The key of the reverse glue operation is to generate parting faces. A problem definition of parting face generation for a region is provided. Correspondingly, three face generating criteria are identified. Based on the parting lines of a region, our algorithms to generate the parting faces are presented. Our mold construction algorithms for two-piece molds and multi-piece molds are also presented with brief discussions. Some industrial examples are provided which illustrate the efficiency and effectiveness of our approach. We tested our mold designs by fabricating stereolithography mold inserts (a rapid tooling method) and molding parts.

A Reverse Glue Approach to Automated Construction of Multi-Piece Molds

2003 ◽  
Vol 3 (3) ◽  
pp. 219-230 ◽  
Author(s):  
Yong Chen ◽  
David W. Rosen
Keyword(s):  
Design Process ◽  
Problem Definition ◽  
Mold Cavity ◽  
Mold Design ◽  
Difficult Time ◽  
Construction Step ◽  
Efficiency And Effectiveness ◽  
Definition Of ◽  
Face Generation ◽  
Construction Algorithms

Mold design can be a difficult, time-consuming process. Determining how to split a mold cavity into multiple mold pieces (e.g., core, cavity) manually can be a tedious process. This paper focuses on the mold construction step of the automated mold design process. By investigating glue operations and its relations with parting faces, an approach based on a new reverse glue operation is presented. The key to the reverse glue operation is to generate parting faces. A problem definition of parting face generation for a region is provided. Correspondingly, three face generating criteria are identified. Based on the parting lines of a region, our algorithms to generate the parting faces are presented. Our mold construction algorithms for two-piece molds and multi-piece molds are also presented with brief discussions. Some industrial examples are provided which illustrate the efficiency and effectiveness of our approach. We tested our mold designs by fabricating stereolithography mold inserts (a rapid tooling method) and molding parts.

Semantic Analysis of Function-Solution Duality

2011 ◽  
Author(s):  
Franc¸ois Christophe ◽  
Tuomas Ritola ◽  
Eric Coatane´a ◽  
Alain Bernard
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Design Problem ◽  
Semantic Analysis ◽  
Problem Definition ◽  
Early Design ◽  
Function Solution ◽  
Functional Representation ◽  
Definition Of ◽  
Analysis Of Function

Methodologies of the literature tend to separate clearly the design problem definition from the solutions to this problem. Nevertheless, this paper argues that conceptual design solutions are deeply rooted in the definition of the design problem. Hence, it is shown that conceptual solutions can emerge from the semantic analysis of the functional definition of a problem. This paper addresses the recursive aspect of conceptual design and the iterative loops between each step of design methodologies which are usually presented as a sequential flow. This paper presents that, in fact, in the early design phases, the functional representation of the design problem may often emerge from ideas of potential solutions. Afterward, this functional representation can be refined into concept of solutions, which can then give emergence to another functional representation. We hence argue here that the conceptual design process involves a constant duality between the functional representation of a problem and the potential solutions to this problem. Furthermore, we argue that the concepts of solution to a design problem can already be embedded semantically in the description of the problem as well as the description of these potential solutions enables the discovery of new design problem. This article presents these developments through the study of the sub-system of a robot used for harvesting fruits in a robot competition.

Queer-Sensible Designing

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Silas DENZ ◽  
Wouter EGGINK
Keyword(s):  
Queer Theory ◽  
Design Process ◽  
Industrial Design ◽  
Gender Norms ◽  
Design Practice ◽  
Gender Scripts ◽  
Femininity And Masculinity ◽  
Design Workshop ◽  
Definition Of ◽  
Design Style

Conventional design practices regard gender as a given precondition defined by femininity and masculinity. To shift these strategies to include non-heteronormative or queer users, queer theory served as a source of inspiration as well as user sensitive design techniques. As a result, a co-design workshop was developed and executed. Participants supported claims that gender scripts in designed artefacts uphold gender norms. The practice did not specify a definition of a queer design style. However, the co-design practice opened up the design process to non-normative gender scripts by unmasking binary gender dichotomies in industrial design.

scholarly journals REVIEW OF DESIGN HEURISTICS AND DESIGN PRINCIPLES IN DESIGN FOR ADDITIVE MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 2571-2580
Author(s):  
Filip Valjak ◽  
Angelica Lindwall
Keyword(s):  
Additive Manufacturing ◽  
Design Process ◽  
Research Question ◽  
Design Principles ◽  
Current Status ◽  
Design For Additive Manufacturing ◽  
Design Heuristics ◽  
Similarities And Differences ◽  
Definition Of ◽  
Support Methods

AbstractThe advent of additive manufacturing (AM) in recent years have had a significant impact on the design process. Because of new manufacturing technology, a new area of research emerged – Design for Additive Manufacturing (DfAM) with newly developed design support methods and tools. This paper looks into the current status of the field regarding the conceptual design of AM products, with the focus on how literature sources treat design heuristics and design principles in the context of DfAM. To answer the research question, a systematic literature review was conducted. The results are analysed, compared and discussed on three main points: the definition of the design heuristics and the design principles, level of support they provide, as well as where and how they are used inside the design process. The paper highlights the similarities and differences between design heuristics and design principles in the context of DfAM.

scholarly journals Personalization in Game Design for Healthcare: a Literature Review on its Definitions and Effects

2016 ◽  
Vol 3 (4) ◽  
Author(s):  
Marierose Van Dooren ◽  
Valentijn Visch ◽  
Renske Spijkerman ◽  
Richard Goossens ◽  
Vincent Hendriks
Keyword(s):  
Literature Review ◽  
Product Design ◽  
Design Process ◽  
Game Design ◽  
Process Model ◽  
Health Effect ◽  
Stakeholder Involvement ◽  
Problem Definition ◽  
Health It ◽  
Design Process Model

Personalization, the involvement of stakeholders in the design process, is often applied in serious game design for health. It is expected to enhance the alignment of a game to the preferences and capacities of the end-user, thereby increasing the end-user’s motivation to interact with the game, which finally might enhance the aimed-for health effects of the game. However, the nature and effect of personalization have never been systematically studied, making assumptions regarding personalization ungrounded. In this literature review, we firstly provide a proposal of our Personalized Design Process-model, where personalization is defined as stakeholder involvement in the Problem Definition-, Product Design- and/or Tailoring Phase. Secondly, we conducted a systematic literature review on this model, focusing on health and its effects. In this review, 62 of the 2579 found studies were included. Analysis showed that a minority of the studies were of methodologically higher quality and some of these tested the health effect by contrasting tailored versus non-tailored games. Most studies involved stakeholders in the Tailoring Design Phase. Therefore, we conclude that involving stakeholders in the Tailoring Phase is valuable. However, to know if personalization is effective in the Product Design- and the Problem Definition Phase, more studies are needed.

Assessment of Chronic Health Care through an Internet Consensus Tool

2016 ◽  
pp. 424-443 ◽  
Author(s):  
Josep Ma. Monguet ◽  
Alex Trejo ◽  
Tino Martí ◽  
Mireia Espallargues ◽  
Vicky Serra-Sutton ◽  
...  
Keyword(s):  
Health Care ◽  
Health Professionals ◽  
Chronic Care ◽  
Health Planning ◽  
Research Field ◽  
Consensus Method ◽  
Efficiency And Effectiveness ◽  
Professional Health ◽  
Participation Process ◽  
Definition Of

“Health Consensus for the Assessment of Chronic Care Programs” (HC-ACP) is an internet based application created to promote and facilitate the participation of health professionals in the definition of a set of indicators for the assessment of chronic care and management of areas of improvement in this field. The first prototype of the application has been applied twice, first in the region of Catalonia, and in a second project in the context of the whole Spanish Health System. HC-ACP has collected contributions from more than 800 health professionals from around Spain including profiles in the fields of management, health care professional, health planning and quality assessment, allowing sharing and aggregate knowledge and clinical experience from a wide range of points of view. After a process of literature review and panel meetings with professionals who proposed a wide list of indicators, the HC-ACP application was used to select a minimum set of indicators following a participative process based on Health Consensus, an online Real Time Delphi method. The first part of this chapter is devoted to expose paradigms that define the interdisciplinary research field of the method, the second part of the chapter presents the Health Consensus method, and finally the third part exposes a detailed description of the HC-ACP application and the followed process. Besides the relevance and utility of the Health Consensus method, the action-research conducted to build the application proves the efficiency and effectiveness of getting health professionals really involved in the processes of defining the models to assess the healthcare system. The online method proposed has been accepted by participants who have expressed high levels of satisfaction during the participation process.

scholarly journals Accountability and responsibility defined

2018 ◽  
Vol 11 (3) ◽  
pp. 687-707 ◽  
Author(s):  
Stephen Keith McGrath ◽  
Stephen Jonathan Whitty
Keyword(s):  
Design Methodology ◽  
Academic Research ◽  
Internal Conflict ◽  
Future Research ◽  
Content Type ◽  
Physical Systems ◽  
Efficiency And Effectiveness ◽  
Governance Models ◽  
Definition Of ◽  
Practical Implications

Purpose The purpose of this paper is to remove confusion surrounding the terms responsibility and accountability from the general and project management arenas by creating “refined” (with unnecessary elements removed) definitions of these terms. Design/methodology/approach A method of deriving refined definitions for a group of terms by ensuring that there is no internal conflict or overlap is adopted and applied to resolve the confusion. Findings The confusion between responsibility and accountability can be characterised as a failure to separate the obligation to satisfactorily perform a task (responsibility) from the liability to ensure that it is satisfactorily done (accountability). Furthermore, clarity of application can be achieved if legislative and organisational accountabilities are differentiated and it is recognised that accountability and responsibility transition across organisational levels. A difficulty in applying accountability in RACI tables is also resolved. Research limitations/implications Clear definition of responsibility and accountability will facilitate future research endeavours by removing confusion surrounding the terms. Verification of the method used through its success in deriving these “refined” definitions suggests its suitability for application to other contested terms. Practical implications Projects and businesses alike can benefit from removal of confusion around the definitions of responsibility and accountability in the academic research they fund and attempt to apply. They can also achieve improvements in both efficiency and effectiveness in undertaking organisation-wide exercises to determine organisational responsibilities and accountabilities as well as in the application of governance models. Social implications Refined definitions of responsibility and accountability will facilitate building social and physical systems and infrastructure, benefitting organisations, whether public, charitable or private. Originality/value Clarity resulting in the avoidance of confusion and misunderstanding together with their consequent waste of time, resources and money.

Planning and Scheduling Based on an Explicit Representation of the State of the Design

2002 ◽  
Author(s):  
Andre´s Felipe Melo ◽  
P. John Clarkson
Keyword(s):  
Design Process ◽  
The State ◽  
Explicit Representation ◽  
Industrial Case Study ◽  
Planning And Scheduling ◽  
State Action ◽  
Markov Decision ◽  
Definition Of ◽  
Selection Of

This paper describes a computational model that provides planning information useful for scheduling the design process. The model aims to reduce uncertainty in the design process and with it the risk of rework. The view is taken that planning is concerned with choosing between alternative actions and action sequences, but not with resource allocation. The planning model is based on an explicit representation of the state of the design process, the definition of the design capabilities as a pool of tasks, and on the generation and selection of plans by evaluating their reliability. Classical decision theory is used for evaluating the plans: a state-action net is built and analyzed as a Markov decision process. The model produces plans based on qualified task dependencies. These plans can be used as a basis for manual and automated scheduling. In an example industrial case study, a reduction of over 30% in the expected rework was predicted.

An Investigation on the Implications of Design Process Phases on Artifact Novelty

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
Nur Ozge Ozaltin ◽  
Mary Besterfield-Sacre ◽  
Gül E. Okudan Kremer ◽  
Larry J. Shuman
Keyword(s):  
Economic Growth ◽  
Engineering Education ◽  
Design Process ◽  
Early Phase ◽  
Problem Definition ◽  
Design Teams ◽  
Technical Design ◽  
Design Elements ◽  
Design Activities ◽  
Research Questions

Innovation, including engineering innovation, is essential for economic growth. Currently, while most design practices in engineering education focus on aspects of “good” technical design, elements of innovation may be neglected. This research investigates design process activities that yield innovative artifacts. Specifically, we examine the types of design activities, their timing, and the associations among each other. Specifically, two research questions are explored. First, what design activities do teams engage in that relate to the innovativeness of the resultant design artifact? Second, how do these design activities impact the succeeding activities across the design process (from problem definition to working prototype (WP))? To explore these questions, 16 senior capstone bioengineering design teams are followed as they advance from initial conceptualization to WP over an average 23 week period. Several significant measures suggest that innovative teams differ from their noninnovative counterparts in terms of what activities they engage in, how much they engage in the particular activities, and in what phase they conduct the activities. Specifically, certain activities utilized in the early phase (e.g., marketing) are essential for innovation. Moreover, in terms of iterations through activities, spending significant time and effort while developing a design, as well as having smooth, rich iterations throughout the process contribute to the innovativeness of the artifact.

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