Selection of Heat Treat Process for Optimum Gear Design

2000 ◽  
pp. 185-188
Keyword(s):  
Material Selection ◽  
Material Design ◽  
Heat Treating ◽  
Gear Design ◽  
Successful Design ◽  
Design Requirements ◽  
The Cost ◽  
Design And Manufacture ◽  
Cost Factors ◽  
Selection Of

Abstract The successful design and manufacture of gears are influenced largely by design requirements, material selection, and proper heat treatment. This chapter addresses the cost factors and tradeoffs involved in selecting a material, design features, and a heat treating process to optimize gear performance for a particular application.

Tailoring Composite Materials Through Optimal Selection of Their Constituents

1992 ◽  
Vol 114 (3) ◽  
pp. 451-458 ◽  
Author(s):  
H. M. Karandikar ◽  
F. Mistree
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Multiobjective Optimization ◽  
Material Selection ◽  
The Other ◽  
Economic Factors ◽  
Optimal Selection ◽  
Structural Applications ◽  
Design Requirements ◽  
Selection Of

The use of composite materials has provided designers with increased opportunities for tailoring structures and materials to meet load requirements and changing and demanding environments. This has led to their increased use in structural applications. As with traditional materials the selection of an appropriate material for a design is important. In case of design using composite materials the selection of a material consists of selecting a fiber-resin combination which meets all design requirements. This involves choosing the fiber, the resin, and the proportion of these two constituents in the composite material. The phrase “material selection” refers to the problem of laminate selection. This corresponds to the task of choosing a fiber and resin combination based on technical and economic factors. Materials tailoring, on the other hand, involves manipulating the composition of the composite material to achieve desired properties and it is the selection of a fiber and resin simultaneously but separately. In this paper we present, through an example, a multiobjective optimization-based method for assisting a designer in tailoring composite materials for specific technical and economic objectives.

scholarly journals Multiobjective Site Selection Model for Emergency Shelter Facilities in Urban Areas

2021 ◽  
Author(s):  
Kuo-Chi Yen ◽  
Weid Chang ◽  
Wu-Chiao Shih
Keyword(s):  
Genetic Algorithm ◽  
Urban Areas ◽  
Location Model ◽  
Emergency Shelter ◽  
Factors Associated ◽  
Facility Locations ◽  
Random Weights ◽  
The Cost ◽  
Cost Factors ◽  
Selection Of

Abstract Industrial and economic development is primarily applied to densely populated urban areas. If a sudden disaster occurs in such areas, the consequences can be severe. Shelter facility location affects the implementation of postdisaster relief work. This study explored residents’ perceived utility of evacuation time, their risk utility for road blocking, and the cost factors associated with constructing shelter facilities in the context of governance. A location model for emergency shelter facilities in cities was established on the basis of the aforementioned factors. Because the resolution of the random-weighted genetic algorithm (RWGA) is susceptible to influence from random weights, a robustness random-weighted method (RRWM) was developed. The validity and feasibility of the location model were examined through numerical analysis. Finally, the convergence of the RRWM was analyzed and compared with that of the RWGA and a single-objective genetic algorithm. The results revealed that the proposed algorithm exhibited satisfactory performance and can assist in evaluation and decision-making related to the selection of urban shelter facility locations.

Components for Composite Material Customization System

2009 ◽  
Author(s):  
Soumitra Nandi ◽  
Zahed Siddique
Keyword(s):  
Composite Materials ◽  
Material Selection ◽  
Selection Process ◽  
Material Design ◽  
Optimization Techniques ◽  
Conventional Approach ◽  
Wide Range ◽  
Properties Of Materials ◽  
Selection Of

With the advancements of composite materials and research in nano-composites, designers have the flexibility to select materials from a wide range of properties to meet their specific design needs. Even with all these advancements, the material selection process during design follows a very conventional approach. The conventional approach to material design is to select a certain material from a given pre-set material list that allows the attainment of nearest properties required for the product. One of the disadvantages of this approach is that the trade-off inherent in the selection of material, when multiple properties are targeted, can be cumbersome to achieve or addressed at all. In this paper we present an approach to select and design composite materials, where the designer will have flexibility to select multiple properties of materials during the design of a new product. This approach employs an index for selection combined with heuristic optimization techniques to select the optimized combination of composite materials that could meet closest possible property goals. In the case study presented in this paper, we did not perform any optimization; rather, emphasize is given to the explanation of material selection technique, and an RMS value is introduced as an index for the selection.

scholarly journals Features of calculations of the limit cost of high-rise constructions for housing and civil purposes with the use of consolidated standards

2018 ◽  
Vol 193 ◽  
pp. 05037
Author(s):  
Andrei Ovsiannikov ◽  
Anna Vorotyntseva ◽  
Vladimir Bolgov
Keyword(s):  
Cost Of Capital ◽  
Correction Factors ◽  
Price Determination ◽  
High Rise ◽  
Additional Correction ◽  
Capital Construction ◽  
The Cost ◽  
Cost Factors ◽  
Initial Price ◽  
Selection Of

When determining the cost of capital construction objects, for purposes of pre-investment workings out and purposes of initial maximum initial price determination on tenders, construction price norms are used (CPNs). Modern CPNs are not designed to determine the value of high-rise buildings. It is necessary to adapt modern CPNs to get opportunity for the possibility to take into account special cost factors in determining the cost of high-rise buildings. The main ways can be: selection of new representative objects or application of additional correction factors.

scholarly journals A Case Study of Material Selection Method Based on Engineering and Material Perception Applied to the Smartphone Rear Panel

2022 ◽  
Vol 60 (1) ◽  
pp. 76-82
Author(s):  
Jaeho Choi
Keyword(s):  
Material Selection ◽  
Advanced Technology ◽  
Human Contact ◽  
Material Perception ◽  
Product Manufacturing ◽  
Basic Technology ◽  
Design Requirements ◽  
Near Future ◽  
Selection Of

Smartphones were launched in the market as a product in the early 2000’s. Today, less than 20 years later, the smartphone has become one of the most frequently used devices for human contact. The market is saturated, and competition between products has intensified, and it is not difficult to find products that are culled. To be selected by consumers, product differentiation must be outstanding, which is not easy when the basic technology is standardized. Currently, competition in the fields of cameras and displays is intensifying, but it is expected that advanced technology will become commonplace in the near future. There are several ways to increase the competitiveness and differentiation of a product, for example, by considering the technical aspects, or making the personality of the product unique. Consumers communicate with products through materials. The process and selection of materials suitable for the design requirements of a product is a very important component in competitive product manufacturing. The final material selection is performed by dividing the design requirements into function, constraints, personality, objectives, and supporting information aspects, and the selecting materials suitable for each stage. By capturing the overall concept as a function, the processes of selecting materials that meet the constraints, determining the type of material that matches the personality, and using the objectives to obtain the top-ranked materials, the final material suitable for all conditions can be selected by referring to supporting information from the top-ranked materials.

scholarly journals Analysis of a Unibody Stub Axle-Hub Design for an ATV

2021 ◽  
Author(s):  
Urooj Ahmad ◽  
Subhrat Praharaj
Keyword(s):  
Dynamic Performance ◽  
Material Design ◽  
Vehicle Performance ◽  
Ground Vehicle ◽  
Dynamics And Control ◽  
Suspension Geometry ◽  
The Cost ◽  
And Control ◽  
Control Behaviour ◽  
Selection Of

This paper aims to design and model a unibody hub and stub axle Wheel assembly to withstand rough terrain conditions while adhering to design optimization objectives of weight, costs, and manufacturability. For any ground vehicle, its dynamics and control behaviour are majorly governed by the design of its wheel assembly since it experiences all the major loads an ATV faces. We aimed to design and fabricate a unibody hub and stub axle that is lightweight and more durable in comparison to the present form of design in which the hub and stub axle is manufactured and assembled separately. The advantages of this unibody design are lesser components, easy replacement, and easy manufacturing. This report also considers the simulation of this unibody using FEM through Ansys, considering all the loads acting on the unibody. Also, the cost and strength comparison of different materials is done for the selection of the best material. Design is done in such a way to consider all the parameters such as performance, reliability, manufacturability, serviceability, weight, and cost. The model achieves a significant reduction in unsprung mass, improving the dynamic performance of the ATV, without requiring a change in suspension geometry. We also analyze the improvement in vehicle performance in shifting from the classic independent stub through hub design to this integrated unibody design.

scholarly journals THE USE OF CATALYTIC NEUTRALIZATION FOR THE PURIFICATION OF EXHAUST GASES FROM MARINE POWER PLANTS IN AN AGGRESSIVE ENVIRONMENT

2020 ◽  
pp. 157-166
Author(s):  
Nina N. Gorlova
Keyword(s):  
Power Plants ◽  
Material Selection ◽  
Point Of View ◽  
Quantitative Composition ◽  
Qualitative And Quantitative ◽  
Aggressive Environment ◽  
Catalytic Material ◽  
The Cost ◽  
Selection Of

    Among the methods used, the most effective, from the point of view of the quality of cleaning from the main harmful substances, is catalytic neutralization. The effectiveness of using this method is largely determined by the properties and characteristics of the used catalytic material. Selection of the appropriate composition determines the provision of physical, physico-mechanical and corrosive properties of the used catalytic materials. In this regard, the possibilities of using steel oxide and molding clay as basic components in the charge of the material were studied. In order to reduce the cost of the treatment system, the possibility of replacing valuable expensive components with ore mills of the appropriate composition was considered.As a result of the studies, the optimal qualitative and quantitative composition of the charge of the catalytic material was determined.

scholarly journals Formation of costs of high-rise objects of housing and civil purpose based on enlarged norms

2018 ◽  
Vol 33 ◽  
pp. 03036
Author(s):  
Anna Vorotyntseva ◽  
Andrei Ovsiannikov ◽  
Vladimir Bolgov
Keyword(s):  
Cost Of Capital ◽  
Correction Factors ◽  
Price Determination ◽  
High Rise ◽  
Additional Correction ◽  
Capital Construction ◽  
The Cost ◽  
Cost Factors ◽  
Initial Price ◽  
Selection Of

When determining the cost of capital construction objects, for purposes of pre-design workings out and purposes of initial maximum initial price determination on tenders, construction price norms are used (CPNs). Modern CPNs are not designed to determine the value of high-rise buildings. It is necessary to adapt modern CPNs to get opportunity for the possibility to take into account special cost factors in determining the cost of high-rise buildings. The main ways can be: selection of new representative objects or application of additional correction factors.

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