Design Method Selection Matrix for Facilitating Product Platform and Family Design

Author(s):  
Yutaka Nomaguchi ◽  
Anders Askhøj ◽  
Kristian F. Madsen ◽  
Ryota Akai ◽  
Kikuo Fujita

The aim of this research is to develop a method to manage product platform and family design methods and to select one appropriate for a specific design case. As the need for product platform has increased over the last 20 years, research within the area has led to the development of various methods that aim at evaluating a candidate of design. While sharing similar approach, different researchers have developed different methods that vary greatly in type, focus and complexity. Although their differences are considered a strong point of the theoretical field, the large variety can end up complicating the selection process, which will result in choosing less optimal methods for a specific design case. This paper proposes Design Method Selection Matrix (DMSM) that can help designers choose appropriate design methods. The underlying basis for the proposed DMSM is to determine methods appropriateness based on the availability of information, which is defined by the situation in which the evaluation takes place, as well as the importance of information, which is determined by the goal of the evaluation. The output of DMSM is a score for each of the identified methods that represent the appropriateness of the given method, based on the situation and goal(s) chosen by the designer. Suggestions are based on parameters that can easily be determined by designers without extensive experience within platform based product design. The case study demonstrates the effectiveness of DMSM.

Author(s):  
Danielle Poreh ◽  
Euiyoung Kim ◽  
Varna Vasudevan ◽  
Alice Agogino

Despite the growing utilization of human-centered design, both in academia and industry, there is lack of pedagogical materials that support context-based design method selection. When used properly, design methods are linked to successful outcomes in the design process, but with hundreds of design methods to select from, knowing when and how to use a particular method is challenging. Selecting the appropriate design method requires a deep understanding of the project context. Cultivating a selection methodology that is more contextually aware, equips students with the tools to apply the most appropriate methods to their future academic and industry projects. Using theDesignExchange knowledge platform as a teaching material, we discuss a summer design course at the University of California at Berkeley that encourages students to choose design methods rather than the instructors giving a set list. The findings illustrate that when given the task to select a method, students exhibit contextually-aware method selection mindsets.


2018 ◽  
Vol 197 ◽  
pp. 03010
Author(s):  
Undang Syaripuddin ◽  
Cepy Slamet ◽  
Hendri Prabowo ◽  
Muhammad Ali Ramdhani

Pesantren requires some new qualified students through selection process for deciding academic and behavioural fairness. In this context, it is reasonable to utilize an application of a Decision Support System (DSS) to accelerate the student admission mechanisms since the existing process is unable to serve as reliable and objective procedures. The aim of this study is to design a specific computerized application that can be used to capture data of some potential students and recording relevant data for pesantren. Using a structured approach for the system design method, selection-based value is analysed by a Multi Attribute Utility Theory. The study is resulting a capable DSS application to identify students who have proper criteria and build a measurable data documentation.


Author(s):  
Oscar Nespoli ◽  
William Owen ◽  
Stephan Lambert

Waterloo Cases in Design Engineering (WCDE) has been established to enhance engineering design education by developing case studies from student cooperative work term reports, and implementing them across the entire Faculty of Engineering. One design case, developed from a student report, was used in three (3) different courses during one academic term as a precursor activity to a class or term design project. The results of a student survey indicate that the design case was an engaging application and that group discussion and interaction helped to enhance students’ understanding of the design method, and the specific design challenge described in the case. Instructor perspectives are summarized on using design cases and the case method with students in teams to develop teamwork and other complementary abilities.


Author(s):  
Warren Brown

This paper details further progress made in the PVRC project “Development of Improved Flange Design Method for the ASME VIII, Div.2 Rewrite Project” presented during the panel session on flange design at the 2006 PVP conference in Vancouver. The major areas of flange design improvement indicated by that project are examined and the suggested solutions for implementing the improved methods into the Code are discussed. Further analysis on aspects such as gasket creep and the use of leakage-based design has been conducted. Shortcomings in the proposed ASME flange design method (ASME BFJ) and current CEN flange design methods (EN-1591) are highlighted and methods for resolution of these issues are suggested.


Author(s):  
Jan Schumann ◽  
Ulrich Harbecke ◽  
Daniel Sahnen ◽  
Thomas Polklas ◽  
Peter Jeschke ◽  
...  

The subject of the presented paper is the validation of a design method for HP and IP steam turbine stages. Common design processes have been operating with simplified design methods in order to quickly obtain feasible stage designs. Therefore, inaccuracies due to assumptions in the underlying methods have to be accepted. The focus of this work is to quantify the inaccuracy of a simplified design method compared to 3D Computational Fluid Dynamics (CFD) simulations. Short computing time is very convenient in preliminary design; therefore, common design methods work with a large degree of simplification. The origin of the presented analysis is a mean line design process, dealing with repeating stage conditions. Two features of the preliminary design are the stage efficiency, based on loss correlations, and the mechanical strength, obtained by using the beam theory. Due to these simplifications, only a few input parameters are necessary to define the primal stage geometry and hence, the optimal design can easily be found. In addition, by using an implemented law to take the radial equilibrium into account, the appropriate twist of the blading can be defined. However, in comparison to the real radial distribution of flow angles, this method implies inaccuracies, especially in regions of secondary flow. In these regions, twisted blades, developed by using the simplified radial equilibrium, will be exposed to a three-dimensional flow, which is not considered in the design process. The analyzed design cases show that discrepancies at the hub and shroud section do exist, but have minor effects. Even the shroud section, with its thinner leading-edge, is not vulnerable to these unanticipated flow angles.


1989 ◽  
Vol 111 (4) ◽  
pp. 837-843 ◽  
Author(s):  
H. Jaber ◽  
R. L. Webb

This paper develops the effectiveness-NTU design method for cooling towers. The definitions for effectiveness and NTU are totally consistent with the fundamental definitions used in heat exchanger design. Sample calculations are presented for counter and crossflow cooling towers. Using the proper definitions, a person competent in heat exchanger design can easily use the same basic method to design a cooling tower of counter, cross, or parallel flow configuration. The problems associated with the curvature of the saturated air enthalpy line are also treated. A “one-increment” design ignores the effect of this curvature. Increased precision can be obtained by dividing the cooling range into two or more increments. The standard effectiveness-NTU method is then used for each of the increments. Calculations are presented to define the error associated with different numbers of increments. This defines the number of increments required to attain a desired degree of precision. The authors also summarize the LMED method introduced by Berman, and show that this is totally consistent with the effectiveness-NTU method. Hence, using proper and consistent terms, heat exchanger designers are shown how to use either the standard LMED or effectiveness-NTU design methods to design cooling towers.


2013 ◽  
Vol 79 (799) ◽  
pp. 866-879
Author(s):  
Yutaka NOMAGUCHI ◽  
Anders ASKH^|^Oslash;J ◽  
Kristian F. MADSEN ◽  
Kikuo FUJITA

2018 ◽  
Vol 7 (3.27) ◽  
pp. 142
Author(s):  
Sri Astuti Indriyati ◽  
. .

A fundamental premise on environmental and behavioral fields involves assumptions about the systematic interrelationships between architecture and patterns of human behavior. The case study conducted was to confirm the needs of specific design methodology in relations to the area of Perception and Human Behavior. The research focused to the extent to which Office Space Performance gives impact on Employee Productivity and Satisfaction. Following that, It was also seen how those affect the behavior of coping. The findings show that there is a significant impact of Spaces’ Performances on Space Satisfaction. Further, there is a significant impact of Space Satisfaction on Coping Behavior and also a significant impact of Spaces’ Performances against Coping behavior. Humanist architecture with architectural behavior approach is required as a Concept of Planning and Architectural Design in the Future. A New Guidelines for Planning and Architectural Design Method for Architectural Design with Behavior concerns is proposed.   


2020 ◽  
Vol 143 (3) ◽  
Author(s):  
Vivek Rao ◽  
Euiyoung Kim ◽  
Jieun Kwon ◽  
Alice M. Agogino ◽  
Kosa Goucher-Lambert

Abstract Designers’ choices of methods are well known to shape project outcomes. However, questions remain about why design teams select particular methods and how teams’ decision-making strategies are influenced by project- and process-based factors. In this mixed-methods study, we analyze novice design teams’ decision-making strategies underlying 297 selections of human-centered design methods over the course of three semester-long project-based engineering design courses. We propose a framework grounded in 100+ factors sourced from new product development literature that classifies design teams’ method selection strategy as either Agent- (A), Outcome- (O), or Process- (P) driven, with eight further subclassifications. Coding method selections with this framework, we uncover three insights about design team method selection. First, we identify fewer outcomes-based selection strategies across all phases and innovation types. Second, we observe a shift in decision-making strategy from user-focused outcomes in earlier phases to product-based outcomes in later phases. Third, we observe that decision-making strategy produces a greater heterogeneity of method selections as compared to the class average as a whole or project type alone. These findings provide a deeper understanding of designers’ method selection behavior and have implications for effective management of design teams, development of automated design support tools to aid design teams, and curation of design method repositories.


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