Many-Scale Simulation of ABS/PC Blends for the Automotive Industry

2006 ◽  
Vol 51 ◽  
pp. 134-139
Author(s):  
Maurizio Fermeglia ◽  
Marco Ferrone ◽  
Paolo Cosoli ◽  
Maria Silvia Paneni ◽  
Roberta Venica ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Mesoscale Model ◽  
Coefficient Of Thermal Expansion ◽  
Multiscale Simulation ◽  
Polymer Chains ◽  
Structure Property ◽  
Definition Of ◽  
Equilibrium Morphology ◽  
Post Industrial ◽  
Land Filling

Industrial scraps cannot be reused in an advantageous way, mainly because of their degradation. When possible, rejects are added to the virgin material for new molding, although the amount of recycled block copolymer cannot exceed 15% of moldable material to obtain good final performances. The remaining amount of scraps then follows three different routes: i) employment in very poor applications, ii) land filling, and iii) thermal treatment. For this reason, post industrial rejects constitute a major problem both from the standpoint of the European legislation and policy, and from the economic side where enterprises are concerned. In this work we have applied a multiscale simulation approach to study the nanostructured equilibrium morphology of blends consisting of mainly recycled block copolymers of special interest in the automotive industry. The main goal was the definition of the possible causes leading to incompatibility due to non virgin materials. In particular, starting from atomistic-based simulations we derived a procedure to 1) describe in appropriate fashion the polymer chains in terms of the relevant Gaussian models, and 2) determine the relevant Flory-Huggins interaction parameters. Finally, we coupled mesoscale model with finite elements codes to obtain a quantified structure-property relationship for mechanical modulus and coefficient of thermal expansion.

Surveying industry: prospective development directions in the post-industrial era and the digital economy

2019 ◽  
Vol 946 (4) ◽  
pp. 55-64 ◽  
Author(s):  
A.P. Karpik ◽  
D.V. Lisitsky
Keyword(s):  
Conceptual Structure ◽  
Digital Economy ◽  
Recent Time ◽  
Territorial Development ◽  
National Importance ◽  
New Directions ◽  
Definition Of ◽  
Post Industrial ◽  
Development And Management ◽  
Development Prospects

New conditions, technological capabilities and development prospects of the geodetic industry in recent time are characterized. The directions and strategy of the developing the industry, aimed at increasing its national importance by expanding the field of activity from the level of geoinformation to the level of its widespread use are substantiated. The solutions and tasks for the transfer of geo-information activities to a digital basis are listed. The definition of the geospatial activity’s concept is given. The conceptual structure and essentially new directions of geospatial support development of territories taking into account the perspective are offered. They are creating a single territorial geo-information space, designing and developing geo-cognitive technologies for forming geospatial knowledge, developing geo-cognitive technologies for preparing geo-spatial solutions to ensure territorial development and management. The technological levels of formalization and use of geospatial knowledge at preparing spatial solutions are considered. The forecast of expected efficiency received from geospatial activity in the digital economy is given. The scientific and technical directions for the successful geospatial supporting the spatial development of the country and solving tasks of transition to the digital economy are listed.

scholarly journals SPATIAL CONCEPT OF RATIONALE BEHIND ECOLOGICAL AND ECONOMIC DEVELOPMENT

2018 ◽  
Vol 2018 (11-12) ◽  
pp. 136-147
Author(s):  
Ihor BYSTRIAKOV ◽  
Keyword(s):  
Sustainable Development ◽  
Economic Development ◽  
Economic Activity ◽  
Natural Ecosystem ◽  
Spatial Concept ◽  
Economic Concept ◽  
Business Entities ◽  
Definition Of ◽  
Post Industrial ◽  
Platform Economy

For Ukraine’s conditions, it is important to find new forms of organization of economic activity, which will ensure the overcoming of “catching-up” of the world economy. It is advisable to solve the problem in terms of determining the features of the national space for sustainable development. At the same time, objectively, there is a need to adapt the definition of “space” as such to the practice of environmental and economic development management. From a methodological standpoint, the issue is to use the post-industrial approaches to define economic processes with a focus on the category of “interest”. Since economic space of the post-industrial type is formed by the flows of “interests” of business entities, which circulate and determine its structure, attention is focused on domination of energy and information in communicative processes. From the standpoint of the functioning of a proper communicative field, the effect of economic activity is provided by reducing the parameters of transaction duration and then reducing the costs to a corresponding acceptable level. Evolution of the communication system indicates a change in the nature of interaction of business entities with environment. The main issues are the ecological and economic encodings of the life space, which gradually transform into everyday reality and form the corresponding cognitive frames. Therefore, an important point is the search for modern forms of economic self-sufficiency of functioning of ecological systems at the level of requirements for their safe existence at the expense of rational use of natural resources assets. The author emphasizes the expediency of focusing on decentralized forms of managing the process of ensuring the ecological and economic development of territories, taking into account the relevant competences of local economic systems within the definition of their communication fields. Aforementioned approach can be fully solved in the framework of the so-called platform economy. As a phenomenon of macroeconomic level, the platform economy provides guidance on changing the mechanism of cost formation at the grassroots level. The ecological and economic concept of sustainable development fits into general trends associated with transformation of the markets towards expansion of network interactions, since business as well starts to develop according to the similar to natural ecosystem laws.

scholarly journals Sustainable Development: Myth or Reality?

2018 ◽  
Vol 2 (4) ◽  
pp. 303
Author(s):  
Prof. Vladimir Gorbanyov
Keyword(s):  
Sustainable Development ◽  
Local Level ◽  
Developed Countries ◽  
Scientific Concept ◽  
Modern World ◽  
Industrial Countries ◽  
Rational Use ◽  
Conditional Term ◽  
Definition Of ◽  
Post Industrial

<p><em>The report “Our Common Future” gives a definition of sustainable development. </em></p><p><em>In principle, the idea of sustainable development is extremely humane and noble, and it has no alternative. But at the same time this idea in the modern world looks very unrealistic. This is more a slogan than a scientific concept. Sustainable development of our planet is a global process, it is an ideal, because our planet is a single balanced geoecological system. However, today theoretically sustainable development can be achieved only in a small number of highly developed post-industrial countries. In developing countries, unfortunately, there can be no question of sustainable development. In other words, at the global level, it is not possible to achieve sustainable development in the near future.</em></p><p><em>There can be no sustainable development in a single country. But this does not mean that all countries without exception do not need to implement environmental protection activity. On the contrary, it is necessary to carry out such activities everywhere. But this will not be sustainable development, this will be local measures for the rational use of nature. But all these measures are of a local nature, they will not become global, which means that this will not be a sustainable development.</em></p><p><em>However, the term “sustainable development” has gained wide popularity, is humane in nature, so it may remain, but we should remember that this is just a conditional term, and in fact it is a rational use of nature on a local level.</em></p><p><em>Examples of sustainable development strategies and projects in a number of countries are given. It is shown that most of these projects are in essence projects on rational nature use in individual regions. The other part which concerns global problems, can be implemented only by developed countries, they also cannot be sustainable development projects.</em></p>

Aestheticization of Fear and Violence via Public Relations

2021 ◽  
pp. 369-393
Author(s):  
H. Burcu Önder Memiş
Keyword(s):  
Public Relations ◽  
Industrial Revolution ◽  
Military Government ◽  
Sedentary Life ◽  
Definition Of ◽  
The Masses ◽  
Post Industrial ◽  
The Military ◽  
Industrial Societies ◽  
Shed Light

Fear is a human emotion that allows a person to survive. It has a function to ensure the continuity of life. The definition of fear has changed over time. Along with human development, transition to sedentary life, the industrial revolution, and modern life, fear and the things feared have changed. Fear has started to be marketed, especially in post-industrial societies. The governments have seen that fear and violence work to regulate, control, and passivate people. Political governments have had the unique opportunity to use fear as a mechanism for control and surveillance. The governments have aestheticized the fear and presented it indirectly with the support of media. The masses have been shaped as weak, scared, anxious, and helpless in the shadow of fear and violence. This study tries to shed light on the attempt to persuade the society about the legitimacy of the military government by presenting fear and violence to people in aestheticized forms in the 1980s in Turkey.

Knowledge Management for E-Business Performance

2001 ◽  
pp. 2-15 ◽  
Author(s):  
Yogesh Malhotra
Keyword(s):  
Knowledge Management ◽  
Business Strategy ◽  
Business Performance ◽  
Business Environment ◽  
First Century ◽  
Information Strategy ◽  
Industrial Organizations ◽  
New Perspective ◽  
Definition Of ◽  
Post Industrial

<div>Within the last few years, the topic of knowledge management has gathered a</div><div>lot of interest in the corporate sectors. Although there is no commonly agreed upon</div><div>definition of knowledge management, companies, governments, institutions and</div><div>organizations are demonstrating an increasing interest in the topic. The key argument</div><div>of this chapter is that most current interpretations of knowledge management</div><div>are relevant to the industrial world of business of the past era. Given their origin in</div><div>the ‘old world’ of business, many such interpretations of knowledge management</div><div>may have serious and adverse implications for information strategy of enterprises,</div><div>governments and institutions.</div><div>The discussion surfaces the key assumptions about information strategy and</div><div>how they need to be considered afresh given the changing assumptions about</div><div>business strategy and competitive business environment. Based on this discussion,</div><div>a new perspective of knowledge management is proposed followed by suggestions</div><div>for the managers to effectively deploy it in the ‘new world’ of e-business. For the</div><div>purpose of this article, the focus of discussion is on e-business enterprises as most</div><div>observations are already evident in such organizations. However, most of the</div><div>arguments, observations and conclusions are also relevant to executives interested</div><div>in information strategy and business transformation for other post-industrial organizations</div><div>in the twenty-first century.</div>

Novel Technique for Measuring Through-Plane Thermo-Mechanical Properties of Thin Polymer Films

1998 ◽  
Vol 511 ◽  
Author(s):  
K. S. Patel ◽  
Sue Ann bidstrup-Allen ◽  
P. A. Kohl ◽  
T. C. HODGE
Keyword(s):  
Polymer Films ◽  
Mechanical Design ◽  
Coefficient Of Thermal Expansion ◽  
Compression Modulus ◽  
Polymer Chains ◽  
Thin Polymer Films ◽  
Electrode Structure ◽  
Thin Polymer ◽  
Characterization Of Properties ◽  
A New Technique

ABSTRACTPolymer thin films (less than 20 ltm) are widely used as coatings and inter-level dielectrics in microelectronic applications. In multi-layer structures, stresses generated in the films due to interaction with adjacent layers and solvent evaporation induced shrinkage, cause the polymer chains to orient in the plane of the film resulting in anisotropic film properties. Characterization of properties in all directions is essential for accurate electrical and mechanical design and modeling.A new technique has been developed to measure, in-situ, the through-plane (z) properties of thin polymer films. A parallel plate capacitor device and an interdigitated electrode structure were used as sensors to detect changes in dielectric constant and thickness of thin polymer films under thermal or mechanical loading. The through-plane compression modulus and coefficient of thermal expansion were calculated and results are reported for benzocyclobutene (BCB) films.

scholarly journals Feasibility Study of a Facility to Produce Injection Molded Parts for Automotive Industry

2020 ◽  
Vol 8 (1) ◽  
pp. 45
Author(s):  
A. Yudianto ◽  
H. Tan ◽  
Z. Qu ◽  
Q. Xue ◽  
A.C. Naveen ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Capital Investment ◽  
Material Handling ◽  
Flow Analysis ◽  
Design Solution ◽  
Support Functions ◽  
Information Quantity ◽  
Molded Parts ◽  
Injection Molded ◽  
Definition Of

<p>This study aims at the preliminary assessment in designing a complete stand-alone industrial facility to produce injection molded parts for the automotive industry. A draft design solution to allow the company to evaluate the capital investment was performed giving an estimated solution in project profitability. Proposed successive design steps were developed. It includes the definition of input data and information, quantity determination, plat layout diagrams, machine selection, selection of material handling equipment, plant layout design including space requirements of production centers, aísles, support functions. Moreover, the outdoor facility masterplan design is also proposed. Finally, investment calculation via cash flow analysis is calculated.</p>

Simplified stiffness analysis for degraded single lap joints in the space sector – Comparative analytical and finite element analysis

2020 ◽  
Vol 234 (13) ◽  
pp. 1956-1966
Author(s):  
Jannik Zimmermann ◽  
Josef Weiland ◽  
Mohammad Zamaan Sadeghi ◽  
Alexander Schiebahn ◽  
Uwe Reisgen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Ionizing Radiation ◽  
Coefficient Of Thermal Expansion ◽  
Closed Form Solution ◽  
Adhesive Layer ◽  
Lap Joints ◽  
Polymer Chains ◽  
Adhesively Bonded ◽  
European Organization

Considering the aerospace sector, the use of adhesively bonded joints is constantly increasing over the last decades. Due to its lightweight and capability of joining various materials with different coefficient of thermal expansion, this joining technique offers many benefits over conventional methods like rivets, screws and welding. On the other hand, structural adhesives consists of polymer chains that can be severely affected by the environment. An example of such an environmental effect is the interaction of the polymer chains of the adhesive with ionizing radiation in space. Nevertheless in the literature, the influence of ionizing radiation on the mechanical properties of epoxides is covered but not well understood. The present work describes a method of determining the stiffness of an adhesively bonded single lap joint (SLJ) using closed form solution equations. This analytical approach is compared with a numerical model. The mechanical properties of the adhesive in both models is degraded due to irradiation, based on experiments conducted by the European Organization for Nuclear Research (CERN). The results show that the degradation of the mechanical properties of the adhesive layer has a significant influence on the joint stiffness. This effect increases with growing adhesive layer thickness. Comparing the results with a finite element model, it is shown that the developed calculation scheme overestimates the stiffness of the SLJ. This is caused by the neglection of bending stresses within the adherends.

The Effect of Tacticity and Side Chain Structure on the Coil Dimensions of Polyolefins

2018 ◽  
Author(s):  
Mohammad Atif Faiz Afzal ◽  
Jarod M. Younker ◽  
George Rodriguez
Keyword(s):  
High Throughput Screening ◽  
Waste Water Treatment ◽  
Chain Structure ◽  
Polymer Chains ◽  
Side Chain ◽  
Radius Of Gyration ◽  
Structure Property ◽  
Engine Oils ◽  
Structure Property Relationships ◽  
Dynamics Simulations

<pre>The key to the discovery of materials with targeted properties lies in the understanding of structure-property relationships. In this work, we evaluate the relationship between the polymer structure and their coil dimensions, and explore new polymers based on these relations. Coil dimensions are important features of polymers which affect their performance in various applications, including drug delivery, waste-water treatment, and engine oils. Coil dimensions of the polyolefins are dependent on the number, size, and stereo orientation of side chains along the backbone. Thus, controlling these attributes allows us to tailor the coil dimensions of polyolefins. In the proposed scheme, we calculate the radius of gyration (<i>R<sub>g</sub></i>) of polyolefin chains using molecular dynamics simulations and validate against experimental results. Simulated annealing is implemented to ensure the capture of different configurations. This model affords the ability to quantify the effect tacticity has on the coil dimensions of polyolefins. The results show the suppression of tacticity effects when the polymer chains transition to bottlebrush structures, demonstrating that the side chain steric hindrance plays an important role in the rigidity of the chain backbone. Further, the model is used to evaluate the compositional effects by determining the rigidity of propylene and 1-hexene copolymers. Combining our model with virtual high-throughput screening techniques, we evaluated the coiling behavior of hundreds of new polymers. Using the screening results, we established correlations between the structure of the side chain and the coil dimensions of polymers.</pre><pre>The supplementary material accompanying this paper includes the library of 275 polymers and their corresponding <i>K<sub>s</sub></i> values.<br></pre>

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