Apparel Industry's Future Direction of Fiber Material Properties-From a Sewing Point of View-

1996 ◽  
Vol 52 (3) ◽  
pp. P129-P136
Author(s):  
ISAO ISHIZUKA
Keyword(s):  
Material Properties ◽  
Fiber Material ◽  
Point Of View ◽  
Future Direction

Material Properties and Design Aspects of Folding Bicycle Frame

2011 ◽  
Vol 264-265 ◽  
pp. 777-782 ◽  
Author(s):  
M.A. Maleque ◽  
M.S. Hossain ◽  
S. Dyuti
Keyword(s):  
Material Properties ◽  
Raw Material ◽  
New Materials ◽  
Materials Properties ◽  
Advantages And Disadvantages ◽  
Bicycle Frame ◽  
Successful Design ◽  
Future Direction ◽  
The Relationship ◽  
Comprehensive Study

successful design of folding bicycle should take into account the function, material properties, and fabrication process. There are some other factors that should be considered in anticipating the behavior of materials for folding bicycle. In order to understand the relationship between material properties and design of a folding bicycle and also for the future direction in new materials with new design, a comprehensive study on the design under different conditions are essential. Therefore, a systematic study on the relationship between material properties and design for folding bicycle has been performed. The advantages and disadvantages matrix between conventional bicycle and folding bicycle is presented for better understanding of the materials properties and design. It was found that the materials properties of the folding bicycle frame such as fatigue and tensile strength are the important properties for the better performance of the frame. The relationship between materials properties and design is not straight forward because the behavior of the material in the finished product could be different from that of the raw material. The swing hinge technique could be a better technique in the design for the folding bicycle frame.

Formation and Properties of Thermosetting and High TgSystems

1989 ◽  
Vol 154 ◽  
Author(s):  
John K. Gillham
Keyword(s):  
Material Properties ◽  
Point Of View ◽  
Reaction Conditions ◽  
Ttt Diagram ◽  
Temperature Transformation ◽  
Polymeric Glasses ◽  
Generalized Time

AbstractA review of research in the author's laboratory on the conversion of reactive liquids to amorphous polymeric glasses is presented. Inter-relationships between reactants, reaction conditions, and subsequent material properties of thermosetting and high Tg polymers are discussed from the point of view of a generalized time-temperature-transformation (TTT) diagram.

Supercritical Natural Circulation Loop

2021 ◽  
pp. 338-369
Author(s):  
Tanuj Srivastava ◽  
Pranab Sutradhar ◽  
Milan Krishna Singha Sarkar ◽  
Dipankar Narayan Basu
Keyword(s):  
Nuclear Reactors ◽  
Natural Circulation ◽  
Point Of View ◽  
Circulation Loop ◽  
Working Fluid ◽  
System Behavior ◽  
Steady State Condition ◽  
Natural Circulation Loop ◽  
Stability Point ◽  
Future Direction

Supercritical natural circulation loop is a compelling technology for cooling of modern nuclear reactors, which promises enhanced thermal-hydraulic performance in a simple design. Being a new concept, related knowledge base is relatively thin and involves several conflicting theories and controversies. The chapter summarizes the observation till date, starting from the very fundamentals. The phenomenon of natural circulation under steady state condition and suitability of supercritical medium as working fluid are discussed in detail. Different methods of analyses, including analytical, simple 1-d numerical, and multidimensional computational codes, as well as experimental, are elucidated. A comprehensive discussion is presented about the effect of various geometric and operating parameters on the system behavior, from both thermal-hydraulic and stability point of view. Finally, a few recommendations are included about the operation of such loops and future direction of research.

Punching Force of Cold Die of Fuzzy Reliability Considering the Random Distribution of Material Properties

2011 ◽  
Vol 311-313 ◽  
pp. 1577-1582
Author(s):  
Zhi Su Zhao ◽  
Xing Hua Zhang
Keyword(s):  
Material Properties ◽  
Random Distribution ◽  
Point Of View ◽  
Design Stage ◽  
Gradual Change ◽  
Fuzzy Reliability ◽  
Reliability Design ◽  
Curve Design ◽  
Processing Error ◽  
The Impact

In order to be considered in the calculation of punching force of cold die random distribution of material properties, meanwhile including success and failure punching during the gradual change process in the calculation. Based on probabilistic fuzzy reliability point of view, the success or failure determination will be extended to fuzzy events. Based on fuzzy reliability, the punching force of cold die calculation method will be also given when taking the impact of random distribution of material properties into account. Related analysis formulae and the fuzzy criterion of success or failure of punching are established and derived. Through which, design and engineering process are integrated, the designer will be more reliably to predict the success or failure of the punching during the design stage. The processing error of lack of statistical data and the objectivity of the success or failure determination criterion will be easily solved. Economy cost and reliability design of geometrical curve design will be also considered.

scholarly journals Factors Influencing Hoop Rupture Strains of FRP-Confined Concrete

2014 ◽  
Vol 501-504 ◽  
pp. 949-953 ◽  
Author(s):  
Jian Chin Lim ◽  
Togay Ozbakkloglu
Keyword(s):  
Material Properties ◽  
Tensile Strain ◽  
Fiber Material ◽  
Fiber Reinforced Polymer ◽  
Confined Concrete ◽  
Hoop Strain ◽  
Reinforced Polymer ◽  
Factors Influencing ◽  
Test Database ◽  
Rupture Strain

It is now well understood that the hoop rupture strain of fiber reinforced polymer (FRP) jackets confining concrete is often lower than the ultimate tensile strain of the component fibers. A number of reasons for the lower hoop rupture strains in FRP have been identified; however, the relationships between the material properties of FRP-confined concrete and hoop ruptures strains are yet to be established. This paper presents the results of an experimental study into the factors influencing the hoop strain efficiency of FRP jackets. 24 FRP-confined concrete specimens were tested under axial compression. The results indicate that the hoop rupture strains of FRP jackets decrease with either an increase in the strength of the unconfined concrete or the elastic modulus of the fiber material. These observations were verified by additional results from a large FRP-confined concrete test database assembled from the published literature.

scholarly journals Factors of competitiveness in Polish companies in the Silesian Region in 2014–2016

2017 ◽  
Vol 8 (4) ◽  
pp. 601-619
Author(s):  
Grzegorz Głód ◽  
Olaf Flak
Keyword(s):  
Research Methodology ◽  
Theoretical Basis ◽  
Empirical Studies ◽  
External Environment ◽  
Value Added ◽  
Integrated Model ◽  
Point Of View ◽  
Scientific Publications ◽  
The Future ◽  
Future Direction

Research background: A lot of companies in the market create a variety of situations in which they compete with one another. At the same time companies crave for the same pool of demand, and in fact the money held by the buyers. Attempts to define the notion of com-petitiveness of the company appear frequently in scientific publications and in the research conducted by various institutions in different countries. The concept of competitiveness is used to determine the ratio of enterprise characteristics to these of its competitors, resulting from many internal features and the ability to deal with an external environment. Purpose of the article: The purpose of this article is to present results of the Company Competitiveness Barometer, conducted in 2014, 2015 and 2016 on a group of more than 600 Polish companies. The Barometer is a theoretical basis for the integrated model of competi-tiveness designed by the authors of the article. The specific objectives of this article are: to provide an overview of the research methodology, to present the results of empirical studies of more than 600 Polish companies, to create an outline of the future direction of the research on competitiveness of enterprises by means of the Company Competitiveness Barometer. Methods: The questionnaire used in the Company Competitiveness Barometer is built of 48 questions. 45 of them are related to the characteristics of the company that are affecting its competitiveness, and 3 questions are metric questions. The questionnaire can be found on the www.sensorium24.com website. Findings & Value added: The research carried out from the point of view of the company’s employees, offer an opportunity to reflect and think about the competitiveness of their own organization and factors that are shaping it. The IT tool used makes it possible to compare own results with other companies participating in the survey.

scholarly journals Kesterite Cu2ZnSnS4-xSex Thin Film Solar Cells

2021 ◽  
Author(s):  
Kaiwen Sun ◽  
Fangyang Liu ◽  
Xiaojing Hao
Keyword(s):  
Thin Film ◽  
Material Properties ◽  
Low Cost ◽  
New Technology ◽  
Power Conversion ◽  
Basic Material ◽  
Loss Mechanism ◽  
History Of ◽  
Future Direction ◽  
Conversion Efficiencies

Kesterite Cu2ZnSnS4-xSex (CZTS) is a promising thin film photovoltaic (PV) material with low cost and nontoxic constitute as well as decent PV properties, being regarded as a PV technology that is truly compatible with terawatt deployment. The kesterite CZTS thin film solar cell has experienced impressive development since its first report in 1996 with power conversion efficiencies (PCEs) of only 0.66% to current highest value of 13.0%, while the understanding of the material, device physics, and loss mechanism is increasingly demanded. This chapter will review the development history of kesterite technology, present the basic material properties, and summarize the loss mechanism and strategies to tackle these problems to date. This chapter will help researchers have brief background knowledge of kesterite CZTS technology and understand the future direction to further propel this new technology forward.

Material Properties of a New PCD Made of Boron Doped Diamond Particles

2014 ◽  
Vol 1017 ◽  
pp. 154-159
Author(s):  
William Chen ◽  
Manabu Iwai ◽  
Shinichi Ninomiya ◽  
Kiyoshi Suzuki
Keyword(s):  
Material Properties ◽  
Surface Condition ◽  
Point Of View ◽  
Boron Doped Diamond ◽  
Electrically Conductive ◽  
Boron Doped ◽  
Diamond Particles ◽  
Catalyst Metal ◽  
Resistance To Oxidation ◽  
Excellent Tool

In order to cope with various problems associated with machining of PCD, development of a new PCD possessing excellent tool properties and good machinability at the same time has been demanded. From this point of view, the authors have developed a new PCD, “EC-PCD (Electrically Conductive PCD)”, composed of boron doped diamond particles in place of the standard non-conductive diamond. In this research, investigation into material properties of the newly developed EC-PCD is made. Through the tests, it was found that the boron doped diamond particles (the source material of the new PCD) had an electrical resistivity of 1.6×10-4Ω·m and the thermal conductivity after sintering was lower than that of the standard PCD. In addition, it was confirmed that the electrical conductivity of the source diamond particles of the EC-PCD had not been lost even under the condition of high temperature and high pressure during the manufacture. As a result of the heat test, EC-PCD’s high resistance to oxidation at high temperatures was confirmed showing no changes in the surface condition even at 675oC while the surface of the S-PCD was largely changed at the same temperature. One of the reasons for this is guessed to be that EC-PCD is hard to react with the cobalt contained as a catalyst metal. Further, it was found in the friction tests using a steel ball that the friction coefficient of the EC-PCD was 50% higher than that of S-PCD at the room temperature though it dropped by 10-30% at the temperature of 80oC.

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