Generalized Measures of Manufacturability

1990 ◽  
Author(s):  
David G. Jansson ◽  
Srinivasa Ravi Shankar ◽  
Francis S. K. Polisetty
Keyword(s):  
Product Design ◽  
Design Process ◽  
Quantitative Estimate ◽  
Design Guidelines ◽  
Cost Estimate ◽  
Design Issues ◽  
Design Concepts ◽  
Design Cost ◽  
Insight Into

Abstract This paper reports on the development of a framework for the evaluation of design concepts early in the design process through the use of a set of Generalized Manufacturabi1ity Indices (GMI). The indices are aimed at providing designers with a deeper insight into design issues which affect manufacturabi1ity than is available from a pure cost estimate. It is argued that at very early stages of design, cost estimates are inappropriate. Also, the GMI’s provide a more quantitative estimate of the manufacturability of a design than the use of design guidelines. The generalized nature of the GMI’s enables application of this approach to very dissimilar designs. The merging of manufacturing issues upstream in the design process through the framework presented here, is expected to increase both the speed and quality of product design.

scholarly journals Representation in Early Stage Design: An Analysis of the Influence of Sketching and Prototyping in Design Projects

2012 ◽  
Author(s):  
Catherine Elsen ◽  
Anders Häggman ◽  
Tomonori Honda ◽  
Maria C. Yang
Keyword(s):  
Design Process ◽  
Early Stage ◽  
Design Tools ◽  
Quality Of Information ◽  
Stage Design ◽  
Design Concepts ◽  
Design Projects ◽  
Early Stage Design ◽  
Team Design

Sketching and prototyping of design concepts have long been valued as tools to support productive early stage design. This study investigates previous findings about the interplay between the use and timing of use of such design tools. This study evaluates such tools in the context of team design projects. General trends and statistically significant results about “sketchstorming” and prototyping suggest that, in certain constrained contexts, the focus should be on the quality of information rather than on the quantity of information generated, and that prototyping should begin as soon as possible during the design process. Ramifications of these findings are discussed in the context of educating future designers on the efficient use of design tools.

Toward a Methodology for Systematically Generating Energy- and Materials-Efficient Concepts Using Biological Analogies

2015 ◽  
Vol 137 (9) ◽  
Author(s):  
Julia M. O'Rourke ◽  
Carolyn C. Seepersad
Keyword(s):  
Empirical Study ◽  
Product Design ◽  
Design Process ◽  
Sustainable Product Design ◽  
Efficient Design ◽  
Design Concepts ◽  
Bioinspired Design ◽  
Sustainable Product ◽  
Tools And Methods

Energy- and materials-efficient designs are highly valued in the context of sustainable product design, but realizing products with significant changes in efficiency is a difficult task. One means to address this challenge is to use biological analogies during ideation. The use of biological analogies in the design process has been shown to greatly increase the novelty of concepts generated, and many authors in the bioinspired design (BID) community contend that efficiency-related benefits may be conferred as well. However, there is disagreement in the field as to when, how, and why efficiency-related benefits might arise in BIDs. This work explores these issues in-depth. A review of BID literature and an empirical study of BIDs lead to a better understanding of the types of efficiency advantages conferred by BID and set the stage for the development of tools and methods to systematically generate more energy- and materials-efficient design concepts using biological analogies.

An Approach Toward Developing Metrics to Predict Performance and Creativity of Final Products in Project-Based Design Class

2012 ◽  
Author(s):  
Shun Takai ◽  
Ashok Midha ◽  
Marcos Esterman
Keyword(s):  
Correlation Analysis ◽  
Product Design ◽  
Design Process ◽  
Test Performance ◽  
Proof Of Concept ◽  
Concept Selection ◽  
Preliminary Results ◽  
Design Concepts ◽  
Early Stages

This paper investigates metrics to predict performance and creativity of final products at the early stages of product design, i.e., at concept selection and proof-of-concept (POC) prototyping. Three deliverables (concept sketches, POC prototypes, and final products) in a project-based design class are evaluated using Creative Product Semantic Scale (CPSS). Then, CPSS scores are analyzed using correlation analysis to find CPSS of concept sketches or POC prototypes that significantly correlate with CPSS or performance of final products. The preliminary results of this paper indicate that CPSS subscales may be used to predict performance and creativity of final products; that the earlier the stage of the design process is, the more difficult it is to predict performance of final products; and that building fully-functional prototypes is important to test performance of design concepts.

Key Elemental Function Identification Based on Function-Failure Knowledge

2011 ◽  
Vol 58-60 ◽  
pp. 1435-1441
Author(s):  
Mei Qing Wang ◽  
Bin Wang
Keyword(s):  
Product Design ◽  
Failure Mode ◽  
Design Process ◽  
Failure Modes ◽  
Risk Information ◽  
Functional Modeling ◽  
Knowledge Model ◽  
Failure Risk ◽  
Product Design Process

Functional modeling is the key step in product design process. To improve the quality of functional modeling, an identification method of key elemental function based on function-failure knowledge was proposed. A function-failure knowledge model for mechanical product was built, which consists of function-failure mode, relationships among failure modes, and failure risk information. By means of the function-failure repository, the approach to calculate risk number (RN) of the elemental function was presented, in which the relationships among failure modes were considered. Then the key elemental functions were identified by the RN value. Finally, a case was studied to illustrate the proposed method.

scholarly journals PERCONTOHAN RUANG KOMUNAL DI RUMAH SUSUN TAMBORA, JAKARTA BARAT

2020 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Maria Immaculata Ririk Winandari ◽  
Julindiani Iskandar ◽  
Dedes Nur Gandarum ◽  
Sri Handjajanti
Keyword(s):  
Design Process ◽  
Low Cost ◽  
Recycled Concrete ◽  
Use Of Space ◽  
Low Cost Housing ◽  
Concrete Materials ◽  
Communal Space ◽  
Insight Into ◽  
Main Material

Communal space will be managed optimally for the development and maintenance carried out by pesertauni. In Tambora Flats (Rusunawa), spacious units of dwelling cause residents need communal space as a place for them to socialize quickly. Understanding and skills regarding the development and maintenance of independent (participatory) spaces are very much needed to improve the use of space, improve the quality of the environment, as well as improve the skills of low-cost housing residents. The target of PKM this time consists of piloting the construction of recycled concrete communal spaces and participatory communal maintenance rooms. The PKM program this time aims to increase knowledge and understanding of communal spaces and the ability to develop these spaces in a participatory manner. The purpose was made through a demonstration of communal space using concrete materials, concrete residue tests from the FTSP Concrete Laboratory as the main material for making benches and garden boundaries. The pilot participants were RW 11 management, RT 009 management, residents who work as artisans, and other residents of Tambora Rusunawa residents in Kelurahan Angke, Tambora District. Participatory agreement required by residents from the design process to completion. The communication room PKM Team Program provides an insight into the design of a good communal space with facilitators who encourage residents to get in the care of the space

Study on Knowledge-Based Product Design Framework for Facilitating the Interaction of Model Based Development and Prototyping

2014 ◽  
Vol 8 (3) ◽  
pp. 344-355 ◽  
Author(s):  
Yutaka Nomaguchi ◽  
◽  
Masashi Mizuta ◽  
Masaya Hirooka ◽  
Kikuo Fujita
Keyword(s):  
Product Design ◽  
Design Process ◽  
Modeling Language ◽  
Design Tools ◽  
Design Framework ◽  
Mechatronic System ◽  
Mechatronic Systems ◽  
Design Concepts ◽  
Model Based ◽  
Knowledge Based

Model-based development is a potential approach to designing complicated mechatronic systems. This paper proposes a product design framework for mechatronic systems, which integrates model-based development with prototyping and focuses on its process of deployment with hypothesis and verification. SysML is adopted as the modeling language for representing the mechatronic system without depending on specific domains, and FMEA is adopted as the method for describing the results of validation by prototyping. The DRIFT framework is used to capture designer’s operations on the design tools of SysML and FMEA and to manage its process. This study defines design concepts and design operations that are extracted from the patterns embedded in design process with SysML and FMEA. A design example of a ball-sorting robot is created using LEGO Mindstorms to demonstrate the proposed framework.

Methodology to Support Environmentally Aware Product Design Using Axiomatic Design: eAD+

2010 ◽  
Author(s):  
Mijeong Shin ◽  
James R. Morrison ◽  
Hyo Won Suh
Keyword(s):  
Product Design ◽  
Design Process ◽  
Axiomatic Design ◽  
Feedback Mechanism ◽  
Design Parameters ◽  
Functional Coupling ◽  
Design Matrix ◽  
Functional Requirements ◽  
Design Choice

With the increasing environmental sophistication of consumers, there is a need to consider environmental factors and sustainability in the design process. This paper proposes a design methodology intended for software implementation called eAD+ to address the following four issues: 1) there are inherent couplings between eco-factors and product design parameters, 2) eco-factors are seldom structured for ready use within all phases of the design process, 3) there is a need for a formal feedback mechanism from the results of eco-analysis to the design process, and 4) it can be difficult to identify which design choice causes the most egregious environmental issue or functional coupling. eAD+ is based primarily on the Axiomatic Design (AD) methodology and addresses these issues as follows. First, AD directly identifies couplings between the functional requirements (FRs) in a design so that efforts, such as TRIZ, can be applied to address them. Second, as common eco-factors do not provide sufficient structure for inclusion in the AD framework, we develop structured eco-FRs and constraints. These are included alongside the product FRs throughout the design process. Third, the subset of the design matrix (DM) relating the eco-FRs to the design parameters explicitly incorporates feedback from eco-analysis into the design process. Here a database containing environmental (or sustainability) information is employed to evaluate the design. Fourth, we employ an augmented DM (drawing inspiration from the House of Quality of QFD) that provides weights highlighting which design parameter has the greatest influence on eco-factors and functional couplings.

An extended analytic network process method for optimal design of reconfigurable products considering dependency relations among descriptions of design/process candidates and evaluation criteria

2020 ◽  
Vol 234 (24) ◽  
pp. 4763-4779
Author(s):  
Moustafa Gadalla ◽  
Deyi Xue
Keyword(s):  
Optimal Design ◽  
Product Design ◽  
Design Process ◽  
Evaluation Criteria ◽  
Analytic Network Process ◽  
Network Process ◽  
Dependency Relations ◽  
Reconfigurable Product ◽  
Process Method

A reconfigurable product serves as multiple products to deliver different functions through reconfiguration processes to change between product configurations. An optimization method was developed in our previous research to identify both the optimal design and the optimal reconfiguration processes. Because the generic design or process considering different candidates was modeled by an AND–OR tree or graph, importance weights were assigned to nodes with an AND or OR relation, such that the less-important nodes were pruned to improve the optimization efficiency. In this research, an extended analytic network process method is introduced to further improve the quality of the optimal reconfigurable product design approach when dependency relations among descriptions of design/process candidates and evaluation criteria are considered. In this method, the initial weights of the design/process nodes in the AND–OR tree or graph are adjusted based on the dependency relations such that the weights which truly reflect their contributions to the solutions are achieved. In addition, multiple evaluation criteria similar to the evaluation measures used in optimization are selected to identify the weights of the design/process nodes. A case study has been implemented to demonstrate effectiveness of the extended analytic network process for improving the quality of optimal reconfigurable product design.

Inside out: observations on Terragni

2010 ◽  
Vol 14 (2) ◽  
pp. 93-103
Author(s):  
Simon McCormack
Keyword(s):  
Design Process ◽  
Current Practice ◽  
Building Codes ◽  
Inside Out ◽  
Insight Into ◽  
Initial Research ◽  
Historical Origins ◽  
The Prestige

Casa Rustici was a building I admired when I lived in Milan in the mid 1980s, so the opportunity to stay there for a week when it registered on a list of apartments for rent was appealing [1]. Before I undertook the visit I was well aware of the prestige of the building as an important Rationalist project, and after some initial research became intrigued by the divergent accounts of it given by different commentators. The best known critique of Terragni's work is Eisenman's investigation of its abstract composition. Patetta exposes the constraints on the design process imposed by the building codes, while others emphasise the historical precedents that underpinned the Rationalist project. Vitale and Bell provide an insight into the ambiguous character of the central court or lightwell of the building. What I hope to add to these is an account which addresses not just the abstract quality of the building, but also its phenomenal qualities, and its social and historical origins. My intention is that this material will present the building in a way which is relevant for current practice.

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