scholarly journals Properties of the Composition Based on Modified Polyethylenes

2020 ◽  
Vol 9 (3) ◽  
pp. 2484-2494
Keyword(s):  
Mechanical Properties ◽  
Structural Features ◽  
Thermal Transitions ◽  
High Elasticity ◽  
The Subject ◽  
Thermoplastic Polyolefin

The subject of this paper is to study the properties of compositions based on a modified polyethylene and a thermoplastic polyolefin structural features. As a result of the modification of polyethylene, the high elasticity of the material grows, which outwardly makes this polymer similar in complex to the physico-mechanical properties of rubber. The calculations made allowed us to estimate the parameters of the observed thermal transitions and to assign them to the mobility of specific elem ents of the structure

Structural features and strength behavior of TRIP/TWIP steels

2020 ◽  
pp. 5-18
Author(s):  
D. V. Prosvirnin ◽  
◽  
M. S. Larionov ◽  
S. V. Pivovarchik ◽  
A. G. Kolmakov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Thermomechanical Processing ◽  
Maximum Load ◽  
Structural Features ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Structural And Functional Properties ◽  
Twip Steels ◽  
The Creation

A review of the literature data on the structural features of TRIP / TWIP steels, their relationship with mechanical properties and the relationship of strength parameters under static and cyclic loading was carried out. It is shown that the level of mechanical properties of such steels is determined by the chemical composition and processing technology (thermal and thermomechanical processing, hot and cold pressure treatment), aimed at achieving a favorable phase composition. At the atomic level, the most important factor is stacking fault energy, the level of which will be decisive in the formation of austenite twins and / or the formation of strain martensite. By selecting the chemical composition, it is possible to set the stacking fault energy corresponding to the necessary mechanical characteristics. In the case of cyclic loads, an important role is played by the strain rate and the maximum load during testing. So at high loading rates and a load approaching the yield strength under tension, the intensity of the twinning processes and the formation of martensite increases. It is shown that one of the relevant ways to further increase of the structural and functional properties of TRIP and TWIP steels is the creation of composite materials on their basis. At present, surface modification and coating, especially by ion-vacuum methods, can be considered the most promising direction for the creation of such composites.

scholarly journals High elasticity and strength of ultra-thin metallic transition metal dichalcogenides

2021 ◽  
Author(s):  
Ali Sheraz ◽  
Naveed Mehmood ◽  
Mert Mirac Cicek ◽  
İbrahim Ergün ◽  
Hamid Reza Rasouli ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Transition Metal ◽  
Flexible Electronics ◽  
Transition Metal Dichalcogenides ◽  
High Elasticity ◽  
Metal Dichalcogenides

Mechanical properties of transition metal dichalcogenides (TMDCs) are relevant to their prospective applications in flexible electronics. So far, the focus has been on the semiconducting TMDCs, mostly MoX2 and WX2...

POSTMODERN DÖNEMDE TÜKETİCİYİ ANLAMAK, REKLAMLARDA KULLANILAN ARKETİPLERİN POSTMODERN TÜKETİCİ İLE İLİŞKİSİ: TÜRKİYENİN EN DEĞERLİ 20 MARKASININ YOUTUBE REKLAMLARININ ÖRNEĞİ

2021 ◽  
Vol 6 (15) ◽  
pp. 454-481
Author(s):  
Engincan Doğmuş
Keyword(s):  
Continuous Production ◽  
Structural Features ◽  
Analysis Method ◽  
Modern Period ◽  
Content Analysis Method ◽  
Production And Consumption ◽  
The Subject ◽  
Descriptive Approach ◽  
Consumption Change ◽  
World Environment

Postmodern culture, which developed after the modern period, is in a structure in which postfordist consumption understanding is adopted instead of fordist consumption and consumption for image purposes is at the forefront. In this context, brands create their images in order to be remembered in the current culture and to create a lifestyle for the continuity of consumption. The creation process of images, on the other hand, is through advertisements where the continuous production and consumption of high reality and commodities is made, and it shows a common development with postmodern culture brand images. Within the scope of the study, a descriptive approach and content analysis method were preferred in order to make sense of how brand images are produced through advertisements in the postmodern period and to deal with the constructing dimension. Accordingly, the top 10 brands in the ranking of the Brand Finance 2021 Turkey Report were selected as a sample and the ads of the selected brands between 1 June 2021 and 5 June 2021 with the theme of world environment day were analyzed. As a result of the analysis, within the framework of advertising and consumption; brand images in the postmodern period, where there are higher realities, fragmented consumer structure, production and consumption change places and the subject is decentralized; Impressions can be evaluated in various ways such as symbolism, personification, meanings and messages and psychological elements. Looking at the general position, it has been concluded that the structural features of postmodernity are effective in creating and creating brand image characters, and in this respect, it shapes brand images.

Correlation between structural features and mechanical properties of boron nitride fibres derived from alkylaminoborazines

2005 ◽  
Vol 25 (2-3) ◽  
pp. 157-162 ◽  
Author(s):  
Philippe Miele ◽  
Bérangère Toury ◽  
Fernand Chassagneux ◽  
René Fulchiron
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Structural Features

scholarly journals Ethnic peculiarities of fairy tale folklore of the bulgarians from Moldova as an element of traditional culture in a regional manifestation

2021 ◽  
Author(s):  
Nadejda Cara ◽  
Keyword(s):  
Fairy Tales ◽  
Interdisciplinary Research ◽  
Fairy Tale ◽  
Traditional Culture ◽  
Structural Features ◽  
Ethnic Culture ◽  
Republic Of Moldova ◽  
The Subject ◽  
The Republic ◽  
Different Levels

The article presents some research approaches to the fairy-tale folklore of Bulgarians from the Republic of Moldova. According to the author, the fairy-tales texts of Bulgarians from the Republic of Moldova, their semantic, symbolic, and structural features should be researched as a local (regional) variant of Bulgarian folklore. Identification of ethnocultural markers in the fairy-tales of local Bulgarians on some different levels (such as on the subject, ethno-social and spiritual (church-religious) level) will allow to identify some peculiarities in the adaptation process of Bulgarians that migrated to a new ethnocultural zone, as well as to identify the level of preservation of basic ethnic mentality under the conditions of new “mental environment”. Thus, the study of regional ethnic culture is an interdisciplinary research, which allows discovering how localization in time and space affects ethnic culture, in general, and oral folk art, in particular.

John Wyrill Christian. 9 April 1926 — 27 February 2001

2008 ◽  
Vol 54 ◽  
pp. 71-94
Author(s):  
George D. W. Smith ◽  
Harshad K. D. H. Bhadeshia
Keyword(s):  
Mechanical Properties ◽  
Phase Transformations ◽  
Materials Science ◽  
Martensitic Transformations ◽  
Metals And Alloys ◽  
The Body ◽  
Physical Metallurgy ◽  
Impurity Effects ◽  
The Subject ◽  
Successive Generations

During a distinguished career, John Wyrill (‘Jack') Christian had a profound impact on the subject of materials science, particularly physical metallurgy. He was recognized as a world authority on martensitic transformations, and laid the foundations forthe modern understanding of this topic. His monumental two–volume work, The theory of phase transformations in metals and alloys , is the classic authoritative treatise on the subject, and remains one of the most important texts ever published in the area of materials science. It redefined the whole field of phase transformations, set new standards of intellectual rigour and comprehensiveness, and inspired successive generations ofscientists to follow in his footsteps. He was also a pioneer in the study of the mechanical properties of metals and alloys, particularly those having the body–centred cubic structure. He and his students played a key role in establishing that the low–temperature mechanical properties ofthis important class of metals are controlled by intrinsic dislocation–lattice interactions and not by impurity effects. He contributed tothe study of many other topics in materials science, including the structure of interfaces, the mechanism of deformation twinning, and the properties of stacking faults. He was the recipient of numerous national and international awards for his work. His researches, which were always characterized by precision and deep physical insight, have stood the test of time.

scholarly journals Some Characteristics of Interstellar Gas in the Galaxy

1970 ◽  
Vol 39 ◽  
pp. 22-50 ◽  
Author(s):  
Harold F. Weaver
Keyword(s):  
Gas Dynamics ◽  
Theoretical Models ◽  
Structural Features ◽  
Interstellar Gas ◽  
Great Breadth ◽  
The Galaxy ◽  
The Subject

The task assigned for this review is to discuss structural features of the Galaxy as they may involve or relate to gas dynamics. Since a topic of such great breadth would permit discussion of essentially any aspect of the Galaxy, we shall narrow the view and direct attention primarily towards the larger-scale features of the system. In particular, effort will be made to place emphasis on those areas of the subject in which problems of interpretation exist and in which new theoretical models are needed.

A summary review of mechanical properties prediction methods for textile reinforced polymer composites

2005 ◽  
Vol 219 (2) ◽  
pp. 91-109 ◽  
Author(s):  
J J Crookston ◽  
A C Long ◽  
I A Jones
Keyword(s):  
Mechanical Properties ◽  
Detailed Analysis ◽  
Polymer Composites ◽  
Numerical Models ◽  
Textile Composites ◽  
Prediction Methods ◽  
Reinforced Polymer ◽  
Mechanical Properties Prediction ◽  
The Subject

The use of textile reinforcements for polymer composite components has become a common practice due to the favourable material costs and labour requirements compared with traditional unidirectional prepreg composites, and the high stiffness and strength compared with the use of randomly orientated reinforcements. As a result, determination of both elastic properties and failure behaviour of textile composites has been the subject of substantial research in recent years. This paper presents a review of some of the analytical and numerical models pertaining to the mechanics of textile composites which have been published in the literature. Particular consideration is given to the suitability of models for the analysis of non-orthogonal weave structures such as those which have been deformed in shear during component manufacture. The intention of the paper is not to provide a detailed analysis of the underlying mathematics of the models discussed, but rather to provide an overview of the work conducted in order to direct further reading.

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