scholarly journals Robustness Evaluation of Product Concepts based on Function Structures

2019 ◽  
Vol 1 (1) ◽  
pp. 3521-3530 ◽  
Author(s):  
Stefan Goetz ◽  
Jonas Hartung ◽  
Benjamin Schleich ◽  
Sandro Wartzack
Keyword(s):  
Conceptual Design ◽  
Robust Design ◽  
Design Stage ◽  
Design Criteria ◽  
Functional Requirements ◽  
Early Design Stages ◽  
Evaluation Matrix ◽  
Varying Environment ◽  
Product Concepts ◽  
Selection Of

AbstractDue to the varying environment conditions as well as the manufacturing induced deviations, the properties of products vary. In order to still meet the increasingly tightening of functional requirements, tolerancing as well as Robust Design practices became integral parts of the product development. However, despite the fact that the robustness of a product is mainly determined by its conceptual design in early design stages, these activities are usually carried out at the end of the design process. In order to overcome this shortcoming, this contribution shows a method that supports the selection of robust principal solutions and thus contributes to the design of product concepts, which are less sensitive to variations. The novelty lies in the adaption and combination of robust design criteria for the quantitative robustness evaluation in the conceptual design stage. First the product characteristics, which are relevant for the product robustness are determined on the basis of the function structure. By using an adopted VMEA and a newly developed evaluation matrix, this allows a thorough robustness evaluation of product concepts. The method is exemplary shown for a lifting table.

scholarly journals Robust Design of Spaghetti Products based on Consumer Needs

2020 ◽  
Vol 21 (2) ◽  
pp. 126-138
Author(s):  
Nur Kartika Indah Mayasti ◽  
Mirwan Ushada ◽  
Makmudun Ainuri
Keyword(s):  
Robust Design ◽  
Gluten Free ◽  
Product Concept ◽  
Technical Requirements ◽  
Competitive Prices ◽  
Evaluation Matrix ◽  
Product Specifications ◽  
Product Concepts ◽  
Selection Of

To produce competitive advantage, a product has to be designed according to the criteria of consumer needs. The results of identifying consumer needs become technical requirements and target specifications in robust product design. The purpose of this research was to propose a robust design of gluten-free spaghetti product concept using the Taguchi method. The selection of factors and experimental levels utilized the zero one matrix and the evaluation matrix. The results showed that the priority quality attributes required by consumers include good product display, nutrition, acceptable taste, competitive prices, and made from local ingredients. Product specifications that are targeted at product quality are closer to commercial spaghetti products. Based on the experimental design, 4 factors and 3 levels with an orthogonal matrix (Taguchi) L9 (34) resulted in 9 product concepts. The selected concept has confirmed the quality of its spaghetti products.

A New Formal Method of Anticorrosion Design

2010 ◽  
Vol 44-47 ◽  
pp. 1449-1454 ◽  
Author(s):  
Peng Fei Zhao ◽  
Yi Zhang ◽  
Zong Bin Li ◽  
Xiao Yang Yuan
Keyword(s):  
Conceptual Design ◽  
Formal Method ◽  
Formal Model ◽  
Early Stage ◽  
Formal Description ◽  
Functional Requirements ◽  
Formal Reasoning ◽  
Sets Theory ◽  
Polychromatic Sets Theory ◽  
Selection Of

To solve the problem of anticorrosion design in early stage of manufacture, a formal method of anticorrosion design was proposed, and a formal model of conceptual design of anticorrosive materials was established by using hierarchical structure, individual color sets and unified color sets. Basing on the reasoning matrices which were established by using polychromatic sets theory, a formal reasoning method was proposed to realize the formal reasoning from the functional requirements to the selection of final scheme. This formal method of conceptual design for anticorrosion based on the polychromatic sets can make the design process of anticorrosion standardized, and facilitate the formal description of the reasoning process and its expression and operation in computer. The method made some useful explorationfor the CAPP integration design of anticorrosion.

scholarly journals Design, Analysis and Selection of Planar Parallel Mechanisms

2018 ◽  
Vol 7 (2.32) ◽  
pp. 44
Author(s):  
P Vijay ◽  
Dr A. Srinath ◽  
P Sri Naga Venkat ◽  
L Ranganath ◽  
P Appalaraju
Keyword(s):  
Conceptual Design ◽  
Design Analysis ◽  
Design Stage ◽  
Parallel Mechanisms ◽  
Single Degree ◽  
Conceptual Design Stage ◽  
Robot Hands ◽  
Selection Of

This paper presents the application of methodology for ten bar single degree mechanisms and selecting the best among them at the conceptual design stage itself. This saves lot of time for one wants to carry away analysis for getting desired output of the mechanism at the design stage. The methodology has been applied to Tiscler robot hands successfully and has obtained the best mechanism in motion distribution among the links of the chain. 

X-Abilities and Attributes Based Decision Making in Evaluation and Selection of a Turbine Blade Material

2014 ◽  
Author(s):  
Phaneendra Kiran Chaganti ◽  
Shibu Clement
Keyword(s):  
Decision Making ◽  
Turbine Blade ◽  
Conceptual Design ◽  
Concurrent Engineering ◽  
Design Stage ◽  
Engineering Approach ◽  
Design And Manufacturing ◽  
Multi Attribute Decision Making ◽  
The Given ◽  
Selection Of

The evaluation and selection of a turbine blade material involves several x-abilities and attributes. A designer should consider lifecycle issues as well as design and manufacturing strategies simultaneously at conceptual design stage without missing any of the information. In the proposed methodology the comparison is made between different turbine blade materials based on different x-abilities and attributes. The proposed methodology compares the materials using concurrent engineering approach and multi attribute decision making approach (MADM). In the concurrent engineering approach four x-abilities namely quality, manufacturing, environment and cost are considered. To maintain uniformity attributes considered in MADM approach are same as concurrent engineering approach. Both the methodologies show that ST12TE is the best material for turbine blade for the given set of attributes and x-abilities.

Integration of Supply Chain Decisions at the Conceptual Design Stage: A Repository Enabled Decision Tool

2009 ◽  
Author(s):  
Ming-Chuan Chiu ◽  
Saraj Gupta ◽  
Gu¨l E. Okudan
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Product Design ◽  
Conceptual Design ◽  
Design Stage ◽  
Functional Requirements ◽  
Chain Management ◽  
Managerial Efficiency ◽  
Bicycle Industry ◽  
Conceptual Design Phase

A supply chain connects product suppliers, manufacturers, as well as customers with the goal of managerial efficiency. Meanwhile, product design emphasizes the engineering efficiency of a product. Both supply chain management and product design have been drawing attention from numerous researchers. However, there has been only limited research on the integration of product design and supply chain. Despite this fact, there is significant potential for synergy in the integration of engineering and supply chain management, as well as managerial concepts into product design. In the paper, we present a methodology to form this synergistic connection. The methodology presented first generates functional requirements of a product. A design repository is then utilized to synthesize potential components of all sub-functions, providing multiple options for the potential conceptual designs. These concepts are screened by using a Design for Assembly (DfA) index and then a Design for Supply Chain (DfSC) index to select the best concept. An example from the bicycle industry is presented to demonstrate the benefit of supply chain considerations at the conceptual design phase.

Research on Conceptual Design of Green Electromechanical Products

2014 ◽  
Vol 904 ◽  
pp. 414-416
Author(s):  
Xi Yin Lou
Keyword(s):  
Conceptual Design ◽  
Product Life Cycle ◽  
Divergent Thinking ◽  
Design Principle ◽  
Design Stage ◽  
Concept Design ◽  
Functional Requirements ◽  
Innovative Design ◽  
Product Function ◽  
Electromechanical Products

The concept design of green products is according to the various phases of the product life cycle, product function to create and functional decomposition, to meet the principle of solving functional requirements and Realization of the idea and the system design principle of vector scheme of function structure. The conceptual design process is a process of divergent thinking and innovative design, the optimal process plan. Therefore, the conceptual design stage is a very innovative design stage, is also the green design is the most important stage.

Study on Topology Optimum Design of Baffle of Scraper Conveyer

2011 ◽  
Vol 228-229 ◽  
pp. 96-100
Author(s):  
Yan Hui Qie ◽  
Bo Liu ◽  
Xiu Hong Wang ◽  
Hai Peng Jia ◽  
Jian Peng Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Topology Optimization ◽  
Conceptual Design ◽  
Optimum Design ◽  
Homogenization Method ◽  
Homogenization Theory ◽  
Design Stage ◽  
Mean Compliance ◽  
Selection Of

At present the study on the application of the topology optimum design in scraper conveyor is still under development. In this paper the topology optimization based on the homogenization method is applied to the design of the baffle on the scraper conveyer, which can provide a valuable conceptual design scheme for the selection of the baffle pattern. In conjunction with the homogenization theory and Finite Element Method (FEA), the mathematical models for designing the baffle by the minimizing mean compliance are developed in this paper. By applying the topology optimum design to the baffle, the topology optimization based on the homogenization method is proved to be reliable and practical at the conceptual design stage of baffle.

Robust Design via Tolerance Analysis in the Conceptual Design Stage

1999 ◽  
Author(s):  
Alan Parkinson ◽  
Kenneth Chase ◽  
Matt Rogers
Keyword(s):  
Conceptual Design ◽  
Robust Design ◽  
Tolerance Analysis ◽  
Design Methods ◽  
Design Stage ◽  
Robust Designs ◽  
Overall Design ◽  
Process Plans ◽  
Conceptual Design Stage ◽  
Concept Evaluation

Abstract Robust design methods are used to develop designs which can tolerate variation. Most methods developed to date are applied during the detailed design phase. Yet the potential for developing robust designs is greatest during the conceptual design stage, where the overall design concept is determined. This research is part of a larger effort to develop robust design methods for conceptual design. The focus of the research is on developing methods for identifying critical tolerances during concept evaluation. We propose that in many mechanical designs, a 70-30 rule applies: 30% of the tolerances contribute 70% of the variation. This hypothesis is supported by the results from several case studies. We discuss progress in developing methods — in particular the vector loop method — which can be applied during conceptual design to detect critical tolerances. By being aware of these tolerances early in the design process, the designer can either change the design to make the tolerances less critical or make sure the tolerances are appropriately considered as manufacturing process plans are developed.

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