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Wyświetlanie 1-6 z 6
Tytuł:
Usability of obsidian with special refraction as an ornamental stone by bonding with epoxy resin
Autorzy:
Rızaoğlu, Tamer
Camuzcuoğlu, Murat
Powiązania:
https://bibliotekanauki.pl/articles/2175492.pdf
Data publikacji:
2022
Wydawca:
STE GROUP
Tematy:
ornamental stones
obsidian
conchoidal fractures
epoxy
jewelry
kamienie ozdobne
obsydian
przełamy muszlowe
żywica epoksydowa
biżuteria
Opis:
Ornamental stones have been used quite a lot from past to present, and they are produced both naturally and synthetically in terms of visuality, durability and rarity. Naturally used ornamental stones are divided into two different classes as precious and semi-precious, and obsidian with two different colors belonging to the Nemrut volcanics used in the study is classified as semi-precious stones. Obsidian is a volcanic glass, showing a special fracture (conchoidal) and fracture surfaces give the rock a distinctive shine. In this study, obsidian was classified by breaking in different sizes (8-4.75 mm, 4.75-2 mm and 2-0.6 mm) in order to achieve this brightness. While black obsidian shards were obtained from 4.75-2 mm in size, brown obsidian shards were obtained from 2-0.6 mm shards and chose with the help of tweezers. Obsidian fragments with both colors were bonded with epoxy resin mixed at a ratio of 2:1 (epoxy and hardener) and placed in jewelry apparatus. The known durability properties and gloss of epoxy and the gloss on the broken surfaces of obsidian have been highlighted, and it has been observed that obsidian which has been used with different cutting and polishing techniques until now, can be obtained as a new product by using binder material. It is suitable to be used as an ornamental stone in jewelry making as a result of binding the obsidian fragments with epoxy by making use of the shines that occur on the fractured surfaces of the obsidian. In addition, it has been revealed that new products can be obtained as a result of bonding many natural rocks and minerals by using different binding materials.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2022, 11, 2; 96--103
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the main component ratios in the joint filling on the product quality
Autorzy:
Rizaoğlu, Tamer
Karataş, Muhammed Ziya
Çoşkun, Canberk
Powiązania:
https://bibliotekanauki.pl/articles/27324350.pdf
Data publikacji:
2022
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
cement
joint filling
calcite
building materials
Opis:
When building materials are exposed to environmental and natural factors such as temperature differences, humidity, strong wind and earthquake in the areas where they are applied, irreversible damages such as separation, cracking and level difference occur in structures and building materials. In order to prevent these damages, the joints are left between the building materials and the gaps are filled with filling materials. The composition of the materials filling the joint gaps is also very important. The most important problems encountered in joint fillings are rupture, cracking and therefore permeability. In this study, it is aimed to compare the joint filling materials produced from different proportions of aggregate and white cement against rupture and cracking, and to determine the mixture ratio that exhibits the best performance. Five different recipes were prepared by using calcite powder as aggregate, white Portland cement as binder and water-repellent, volumizing and thickening chemical additives as auxiliary materials. On the prepared test samples; Capillary water absorption, water absorption by weight and volume, unit volume weight, saturated unit volume weight, porosity, compressive strength, bending strength, surface hardness and abrasion resistance tests were carried out. Considering the cost and environmental damage of cement, which is one of the main components in joint filler material, DD2 [Calcite (71.50%)] + White Cement (26.50%) + [Polymer + Cellulose + Plasticizer + Silicone] 2% has been detected as the most appropriate recipe.
Źródło:
Mining Machines; 2022, 40, 4; 180--190
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of hard coal mine in the perspective of Industry 4.0
Autorzy:
Palka, Dorota
Rizaoğlu, Tamer
Powiązania:
https://bibliotekanauki.pl/articles/2064861.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
analysis
coal mine
industry 4.0
mining machine and devices
new technology
Opis:
For the Polish economy, hard coal is the basic raw material for the production of electricity and heat, guaranteeing energy security. To ensure safe and effective work in underground mines, the most modern technical solutions are implemented. Innovative achievements of production automation are increasingly being used. Introduction of the Industry 4.0 concept elements is an opportunity for: improvement of coal exploitation processes, use of IT tools supporting decision-making processes and ensuring real-time process management. However, the specificity of the mining environment poses many barriers, for example limitations resulting from geology, extent and volume of excavations, device mobility and telecommunications. The article describes mining threats and limitations as well as the current technical condition of Polish mining. The latest trends in mining development are described in line with the ideas of the fourth industrial revolution. The main goal of the article is to analyze the feasibility of implementing Industry 4.0 concept solutions for underground mining. The analysis was performed with a tabular descriptive method, based on the conducted mining documentation, own observations, surveys and literature research. The indicated limitations and recommendations developed can serve as a guide to further scientific research and implementations in this area.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 327--335
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Physical, Mechanical and Aesthetic Characteristics of Terrazo Tiles Obtained from Different Rock Aggregates
Autorzy:
Çoşkun, Canberk
Rızaoğlu, Tamer
Powiązania:
https://bibliotekanauki.pl/articles/2064771.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
tile
geomaterial
aesthetic properties
physico-mechanical tests
Opis:
Throughout history, people have covered the floors of the buildings with materials such as carpet, rock pieces, wood, mosaic, ceramic and tile according to the conditions of the day due to their desire to protect them from moisture, make them hygienic environment easy to clean and give an aesthetic appearance. The merging of mechanization with cement based materials with the industrial revolution in the 19th century has brought along the development of diversity and different production methods in these floor covering materials. One of these coating materials is terrazo tiles that form the subject of the current paper. Terrazo tiles are materials obtained by pressing the mortar obtained by mixing water, cement, marble powder and aggregate in certain proportions. Within the scope of this research, it was aimed to provide alternative raw materials to the tile body and to transform the rock pieces, which are found in waste form in natural stone workshops, into the economy. For this purpose, geomaterials collected from magmatic, metamorphic and sedimentary rocks cropped in the Kahramanmaraş-Antakya-Elazığ regions and natural stone workshops operating in Kahramanmaraş city, were classified according to their geological origins and aggregates of 4.75-12 mm were obtained with the help of jaw crushers and sieves. Tiles have been produced in accordance with the method of tile production from sized aggregates. The produced tiles were kept in the water pool for 28 days and surface controls were made. According to the physical and mechanical test results applied to the tile samples, water absorption by weight is 5.31-13.25%, bending strength 4.95-8.89 MPa, Böhme abrasion resistance 1.09-3.43 cm3 /50 cm2 , mass loss after freeze-thaw is observed to be in the range of 0.97-1.59%. On the other hand, the surface roughness of the tiles prepared with coarse rock aggregates was found to be relatively lower than the tile samples obtained with fine grained rock aggregates. The obtained results indicate that the geomaterials subject to the research can be used as an alternative raw material source in tile production and these raw materials will provide new benefits to the construction field.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 477--490
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of physical and mechanical properties of limestones used as marble in Tut-Adiyaman Region in Turkey
Autorzy:
Rizaoğlu, Tamer
Çoşkun, Canberk
Camuzcuoğlu, Murat
Powiązania:
https://bibliotekanauki.pl/articles/27324327.pdf
Data publikacji:
2022
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
natural stone
marble
limestone
physico-mechanical tests
Opis:
This study aimed to reveal the petrography and physical-mechanical properties of limestones, which have an important reserve and are used as marble, in Tut district of Adıyaman province, which is one of the important cities of southeast Anatolia. As a result of petrographic analysis of the rock known commercially as Emprador, it was determined that it is bioclastic limestone with abundant nummulite fossils. Density, dry and saturated unit weight, water absorption, surface roughness, abrasion resistance and uniaxial compressive strength tests were applied to determine the physical and mechanical properties of the limestones. According to the test results obtained, the density of the limestones, dry unit weight, saturated unit weight, water absorption by weight, water absorption by volume, average surface roughness, ten points roughness average, maximum roughness value, Bohme abrasion resistance and uniaxial compressive strength values were determined as 2.486 gr/cm3, 2.478 gr/cm3, 2.52 gr/cm3, 1.482%, 3.644%, 3.31 μm, 16.24 μm, 20.03 μm, 8.958 cm3/50cm2 and 1004.03 kgf/cm2 respectively. The results show that the limestones in and around Tut (Adıyaman) county can be used in large areas for decorative purposes, with their physical and mechanical properties, as well as their colour tone and the texture formed as a result of the calcite veins being shaped like a natural pattern.
Źródło:
Mining Machines; 2022, 40, 3; 141--148
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Overview of the Impacts of Geological Hazards on Production
Autorzy:
Rızaoğlu, Tamer
Powiązania:
https://bibliotekanauki.pl/articles/2064581.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
production and geological hazards
seismic hazard
hydro-meteorological hazards
terrain instability
volcanic hazard
Opis:
Throughout history, human beings have been affected by the ongoing events in their environment. While some of the events take place in the sphere they live on, some of them are in the way that events outside the earth affect the world. Necessary measures should be taken on time and in place so that people are not adversely affected or at least minimally affected by the aforementioned events. Geological hazards are the most important risks that occur in the environment of human beings and have a high probability of damaging people’s life and property. In terms of risk management of geological hazards, which are divided into four main groups as seismic, hydro-meteorological, terrain instability and volcanic hazard and have their own characteristics, the efforts to prevent and reduce losses for each of them also differ within themselves. In this review article, geological hazards were introduced in general by giving various examples from the world, the effects of geological disasters on the economy and production were discussed, and the points to be considered for each risk were tried to be emphasized.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 153--165
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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