Plastic Product Evaluation Based on Mold Conceptual Design

2005 ◽  
Author(s):  
Yi-Qiang Lu ◽  
Pei-Ling Liu ◽  
Xiao-Ming Ding ◽  
Qin-Rong Fu
Keyword(s):  
Product Design ◽  
Conceptual Design ◽  
Manufacturing Industry ◽  
Product Evaluation ◽  
Detection Algorithm ◽  
Prototype System ◽  
Detection Mechanism ◽  
Direction Detection ◽  
Parting Direction ◽  
Mould Design

Severe competition in plastic product manufacturing industry is driving the product design toward first-part-correct. Up to now, plastic product design is mainly evaluated by computer-aided-engineering packages to justify the plastic moulding processes including flow, packing and cooling. At the same time, product designers rely on their experience to justify the possibility of forming products, including parting/de-moulding direction and layout design, as there is rarely practical solution on those perspectives. This paper proposes a methodology to evaluate plastic product design based on downstream mould conceptual design probability. Several aspects of the conceptual mould design, from parting direction, undercut, draft angle to overall layout are studied. A novel undercut detection algorithm which extends the Z-Map to two sets of faces and sub-cells is proposed, and a hybrid parting direction detection mechanism is worked out. A prototype system is developed to help product designers to evaluate their designs based on the mould conceptual design perspectives. The system is tested with dozens of industrial parts and results show that the system can help the plastic part and mould designers to evaluate the designs before they are finalized.

Technique Based on an Innovative Design of CNC Turning Center

2010 ◽  
Vol 152-153 ◽  
pp. 809-812
Author(s):  
Yan Zhang ◽  
Tao Zhang
Keyword(s):  
Product Design ◽  
Conceptual Design ◽  
Manufacturing Industry ◽  
Numerical Control ◽  
Advanced Manufacturing ◽  
Control Technology ◽  
Innovative Design ◽  
Design Creativity ◽  
Turning Center ◽  
Research Achievement

Numerical control technology is a core of an advanced manufacturing technology, it is the manufacturing industry that realizes the automation, networking, flexibility, integrated foundation. The integral level of the numerical control equipment marks a national industry’s modernized level and power of the overall nation strength. The core of creative product is product conceptual design, creativity is an important characteristics of product conceptual design. The basic principle of TRIZ theories is the foundation of this research. In order to meeting the demand of product design, this research created some applicable tools for product design. As the final research achievement, these applicable tools can be used in the field of numerical control technology.

MODELING AN ABBREVIATED PRODUCT DESIGN CYCLE IN A FIRST-YEAR ENGINEERING DESIGN COURSE

2012 ◽  
Author(s):  
Patricia Kristine Sheridan ◽  
Jason A Foster ◽  
Geoffrey S Frost
Keyword(s):  
Product Design ◽  
Engineering Design ◽  
Conceptual Design ◽  
Design Project ◽  
University Of Toronto ◽  
Praxis Ii ◽  
Engineering Communication ◽  
Detail Design ◽  
Praxis I ◽  
Design Experience

All Engineering Science students at the University of Toronto take the cornerstone Praxis Sequence of engineering design courses. In the first course in the sequence, Praxis I, students practice three types of engineering design across three distinct design projects. Previously the final design project had the students first frame and then develop conceptual design solutions for a self-identified challenge. While this project succeeded in providing an appropriate foundational design experience, it failed to fully prepare students for the more complex design experience in Praxis II. The project also failed to ingrain the need for clear and concise engineering communication, and the students’ lack of understanding of detail design inhibited their ability to make practical and realistic design decisions. A revised Product Design project in Praxis I was designed with the primary aims of: (a) pushing students beyond the conceptual design phase of the design process, and (b) simulating a real-world work environment by: (i) increasing the interdependence between student teams and (ii) increasing the students’ perceived value of engineering communication.

scholarly journals Metrics for Measuring Sustainable Product Design Concepts

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3469
Author(s):  
Ji Han ◽  
Pingfei Jiang ◽  
Peter R. N. Childs
Keyword(s):  
Product Design ◽  
End Of Life ◽  
Environmental Impacts ◽  
Conceptual Design ◽  
Design Stage ◽  
Sustainable Product Design ◽  
Early Design ◽  
Design Concepts ◽  
Concept Evaluation ◽  
Sustainable Product

Although products can contribute to ecosystems positively, they can cause negative environmental impacts throughout their life cycles, from obtaining raw material, production, and use, to end of life. It is reported that most negative environmental impacts are decided at early design phases, which suggests that the determination of product sustainability should be considered as early as possible, such as during the conceptual design stage, when it is still possible to modify the design concept. However, most of the existing concept evaluation methods or tools are focused on assessing the feasibility or creativity of the concepts generated, lacking the measurements of sustainability of concepts. The paper explores key factors related to sustainable design with regard to environmental impacts, and describes a set of objective measures of sustainable product design concept evaluation, namely, material, production, use, and end of life. The rationales of the four metrics are discussed, with corresponding measurements. A case study is conducted to demonstrate the use and effectiveness of the metrics for evaluating product design concepts. The paper is the first study to explore the measurement of product design sustainability focusing on the conceptual design stage. It can be used as a guideline to measure the level of sustainability of product design concepts to support designers in developing sustainable products. Most significantly, it urges the considerations of sustainability design aspects at early design phases, and also provides a new research direction in concept evaluation regarding sustainability.

Applying Function-Based Failure Propagation in Conceptual Design

2007 ◽  
Author(s):  
Daniel Krus ◽  
Katie Grantham Lough
Keyword(s):  
Risk Analysis ◽  
Product Design ◽  
Conceptual Design ◽  
Functional Model ◽  
Thermal Control ◽  
Design Phase ◽  
Historical Knowledge ◽  
Conceptual Design Phase ◽  
Failure Propagation ◽  
Potential Risks

When designing a product, the earlier the potential risks can be identified, the more costs can be saved, as it is easier to modify a design in its early stages. Several methods exist to analyze the risk in a system, but all require a mature design. However, by applying the concept of “common interfaces” to a functional model and utilizing a historical knowledge base, it is possible to analyze chains of failures during the conceptual phase of product design. This paper presents a method based on these “common interfaces” to be used in conjunction with other methods such as Risk in Early Design in order to allow a more complete risk analysis during the conceptual design phase. Finally, application of this method is demonstrated in a design setting by applying it to a thermal control subsystem.

Personalized knowledge push system based on design intent and user interest

2015 ◽  
Vol 230 (11) ◽  
pp. 1757-1772 ◽  
Author(s):  
Zhan-Song Wang ◽  
Ling Tian ◽  
Yuan-Hao Wu ◽  
Bei-Bei Liu
Keyword(s):  
Knowledge Acquisition ◽  
Conceptual Design ◽  
Current Knowledge ◽  
Target Function ◽  
Design Knowledge ◽  
Prototype System ◽  
Sorting Algorithm ◽  
Illustrative Case ◽  
User Interest ◽  
Design Intent

Existing knowledge provides important reference for designers in mechanical design activities. However, current knowledge acquisition methods based on information retrieval have the problem of inefficiency and low precision, which mainly meet the requirement for knowledge coverage. To improve the efficiency of knowledge acquisition and ensure the availability of design knowledge, this paper proposes a knowledge push service method based on design intent and user interest. First, the design intent model, which is mainly the formal expression of the target function of conceptual design, is built. Second, the user interest model that consists of domain themes and operation logs is built, and an automatic updating method of user interest is proposed. Third, a matching method of design knowledge based on design intent, and a sorting algorithm of knowledge candidates based on user interest are proposed to realize personalized knowledge active push service. Finally, a prototype system called Personalized Knowledge Push System for Mechanical Conceptual Design (MCD-PKPS) is implemented. An illustrative case demonstrates that the proposed method can successfully improve the efficiency and availability of knowledge acquisition.

scholarly journals Identification of The Concept Selection Method for Product Design and Development in The Manufacturing Industry

2018 ◽  
Vol 7 (2.29) ◽  
pp. 352 ◽  
Author(s):  
Shiau Wei Chan ◽  
Izzuddin Zaman ◽  
Md Fauzi Ahmad ◽  
Check Yee Liew
Keyword(s):  
Product Design ◽  
Manufacturing Industry ◽  
Selection Method ◽  
Product Development Process ◽  
Market Demand ◽  
Trial And Error ◽  
Concept Selection ◽  
Design And Development ◽  
Essential Knowledge ◽  
Production Areas

Concept selection is the most critical aspect of the entire product development process. However, many industries are not aware of this, or they might not possess essential knowledge about concept selection. Thus, this study aims to identify the concept selection method used by a series of particular areas within the manufacturing industry. In this study, the researcher conducted interviews with six managers from various production areas in the manufacturing industry. Then, the obtained data were analyzed qualitatively. The concept selection methods used for product design and development in the manufacturing industry were found to be based on various factors, including orders received, building and evaluating prototypes, discussion among executives, market demand, trial and error and the market’s standard deviation. This study serves as a guideline to help managers to evaluate concepts in a more practical way.

scholarly journals Reliability, Availability, and Maintainability Usage in the Development of the 501F Combustion Turbine and Auxiliaries

1991 ◽  
Author(s):  
R. J. Engel ◽  
P. J. Tyler ◽  
L. R. Wood ◽  
D. T. Entenmann
Keyword(s):  
Life Cycle ◽  
Product Design ◽  
Conceptual Design ◽  
High Reliability ◽  
Full Range ◽  
Design Phase ◽  
Conceptual Design Phase ◽  
Critical Components ◽  
Tools And Techniques ◽  
Reliability And Availability

Westinghouse has been a strong supporter of Reliability, Availability, and Maintainability (RAM) principles during product design and development. This is exemplified by the actions taken during the design of the 501F engine to ensure that high reliability and availability was achieved. By building upon past designs, utilizing those features most beneficial, and improving other areas, a highly reliable product was developed. A full range of RAM tools and techniques were utilized to achieve this result, including reliability allocations, modelling, and effective redesign of critical components. These activities began during the conceptual design phase and will continue throughout the life cycle of these engines until they are decommissioned.

scholarly journals Event-triggered attack detection and identification in power-electronics-based DC microgrid

2021 ◽  
Author(s):  
Sicheng Gong
Keyword(s):  
Power Flow ◽  
Detection Algorithm ◽  
Power Line ◽  
Current Data ◽  
Attack Detection ◽  
Dc Microgrid ◽  
Detection Mechanism ◽  
Detection And Identification ◽  
Event Triggered ◽  
Identification Strategy

This paper proposes a novel event-triggered attack detection mechanism for converter-based DC microgrid system. Under a distributive network framework, each node collects its neighbours' relative data to regulate its own output for local stabilization. Without power line current data, hardly can an agent directly identify the source of unexpected power flow, especially under an organized attack composed of voltage variations and corresponding deceptive messages. In order to recognize traitors who broadcast wrong data, target at system distortion and even splitting, an efficient attack detection and identification strategy is mandatory. After the attack detector is triggered, each relative agent refuses to trust any received data directly before authentication. Through proposed two-step verification by comparing theoretical estimated signals with received ones, both self sensors and neighbour nodes would be inspected, and the attacker was difficult to hide himself. Through simulation on SIMULINK/PLECS and hardware experiments on dSpace Platform, the effectiveness of proposed detection algorithm has been proved.

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