scholarly journals New Findings in the Field of Thermal Drilling of Aluminum Alloys

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5007
Author(s):  
Lydia Sobotova ◽  
Miroslav Badida ◽  
Marek Moravec ◽  
Anna Badidova ◽  
Alica Maslejova
Keyword(s):  
Aluminum Alloys ◽  
Research Work ◽  
Strength Properties ◽  
Scientific Research Work ◽  
New Findings ◽  
Drilling Method ◽  
Drilling Technology ◽  
Thermal Drilling ◽  
Joint Quality ◽  
Visual Shape

This paper explores the joining of materials by a new progressive method of thermal drilling. Many types of joints are utilized in industrial production, especially in the automotive industry, which requires the joining of different types of materials with different thicknesses. For these needs, it will be appropriate to apply the joining method of thermal drilling technology. The used material, its mechanical properties, and the preparation of the joint by assembly and disassembly operations play an equally important role. By using new friction technologies, we can reduce production time, increase joint quality, offer automation in certain types of operations, save economic costs, and protect the environment. In this contribution, the authors present the results of their scientific research work focused on an investigation, comparison and testing of thermal drilling effects on the behavior of aluminum alloys (AlMgSi). The holes, collars and bushings formed by the drilling method were subjected to visual shape evaluation. Based on the evaluation of the samples, the quality of the evaluated joints was assessed. The best shape and strength properties at higher speeds of the drilling machine were obtained at 3400 rpm. The results of the methods of macroscopy and microscopy investigations, as well as the results of the methods of scanning electron microscope (SEM) and energy dispersive X-ray (EDS), are presented in this contribution.

Weldability: Effect of Alloying Element Sc, Mn, and Zr on Alloys of the Al-Mg-Sc-Mn-Zr System

2019 ◽  
Author(s):  
V. I. Lukin
Keyword(s):  
Aluminum Alloys ◽  
Practical Importance ◽  
Strength Properties ◽  
Strength Characteristics ◽  
Mg Alloy ◽  
Alloying Element ◽  
Processing Properties ◽  
Alloys Of The Al ◽  
Effect Of Alloying

Scandium in aluminum alloys behaves as the most efficient modifier of the structure of the material and as an agent suppressing recrystallization. This unique behavior of scandium in alloys of the Al-Mg system greatly increases the strength characteristics, whilst retaining on a higher level the ductility and processing properties of deformed semi-finished products. This article describes the effect of complex alloying the Al-6.3% Mg alloy with scandium, manganese and zirconium on the weldability and strength properties of the material is of considerable scientific and practical importance.Investigations.

scholarly journals Effect of Paper Waste as Cement Replacement in Rammed Earth Construction

2021 ◽  
Vol 9 (7) ◽  
pp. 865-869
Keyword(s):  
Developing Countries ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Research Work ◽  
Strength Properties ◽  
Rammed Earth ◽  
Cellulose Content ◽  
Paper Waste ◽  
Earth Construction ◽  
Water Absorbability

The focus on sustainability is at its peak in the construction industries in the last couple of decades. That includes green constructions such as rammed earth construction. Due to media exposure and carbon emission, people are undeniably turning to green and sustainable buildings. Furthermore, there is an improper management pattern of solid waste management found in developing countries, such as open burning and dumping of solid wastes. In which paper waste is not handled in a good way. There arefew places in developing countries where developing countries follow proper management of solid waste. Paper waste is present in each city because people are using it for daily life. Paper waste has fibre in them and has cellulose content. These components of paper waste are suitable for compressive strength. It has a side effect that it increases water absorbability. The reason for this research work is to reduce paper waste and reduce cement content. This paper also aims to find the durability and strength properties of rammed earth construction.

scholarly journals Problems, essence and forms of students’ research activity organization in the system of higher education

2019 ◽  
Vol 8 (1) ◽  
pp. 230-234
Author(s):  
Oksana Yurievna Brazhnik ◽  
Ekaterina Aleksandrovna Batrachenko
Keyword(s):  
Landscape Planning ◽  
Research Work ◽  
Research Activity ◽  
Planning And Design ◽  
Research Activities ◽  
Scientific Research Work ◽  
Work Intensification ◽  
General Scientific ◽  
Competencies Development

This paper describes features of students research activities organization. The authors consider possibilities of research use while studying the courses of the variable part of the educational program. This paper focuses on the role of industrial practice in the implementation of research activities. The approximate content of practices programs, as well as the typology of tasks aimed at research work intensification is given. The authors emphasize the role of research activities for general professional and professional competencies development. The paper also considers peculiarities of estimation and ways of scientific-research work optimization while studying for the Masters degree. The conducted studies have shown that the assessment of competencies development can be carried out on various indicators, the following indicators are of fundamental importance: practical nature of scientific and innovative activity (participation in fundamental landscape and geographical research, modernization and creation of landscape programs of general scientific and applied importance), originality of the idea and creative approach, use of the latest technologies of landscape planning and design.

scholarly journals Sports Motivation Of Cadets Engaged In The Sports Of Bocks

2021 ◽  
Vol 03 (06) ◽  
pp. 52-57
Author(s):  
S.S. Tadjibaev ◽  
Keyword(s):  
Research Work ◽  
Scientific Research ◽  
Scientific Research Work

In this article, the results of the scientific research work on the determination of sports motivation of the 1-2-stage cadets engaged in boks are described. Sports motivation V.F.Carried out on the case using the Sopov methodology.

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