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Online since: July 2021
Authors: Elena V. Lavrova, Vitaliy Ivanov, Vladyslav Kibish, Ihor Mamontov
Experiments and Discussion
The following parameters were used as variable variables during the research: the diameter of the electrode wire, the frequency of the control mechanical actions, as well as the angle of inclination of the base metal plate to simulate the acting force factors and other conditions for the formation of the deposited layer on curved surfaces.
The formed deposited layer contains 0.4 % carbon in its composition and has acid-resistant properties, since it contains 17 % chromium, as well as other alloying elements.
Microstructure of the heat-affected zone: a) without mechanical impacts on the electrode; b) frequency of mechanical impacts on the electrode f = 30 Hz (×200) Noticeable complex oxide-nitride inclusions surrounded by diffusion zones are light areas of the austenitic structure (Fig. 5).
This should contribute to an increase in the mechanical properties of the heat-affected zone and crack resistance of the deposited layer under conditions of thermomechanical loading.
Kovalevska, Parameters of fire-retardant coatings of steel constructions under the influence of climatic factors, Scientific Bulletin of National Mining University. 3 (2019) 46-53.
The formed deposited layer contains 0.4 % carbon in its composition and has acid-resistant properties, since it contains 17 % chromium, as well as other alloying elements.
Microstructure of the heat-affected zone: a) without mechanical impacts on the electrode; b) frequency of mechanical impacts on the electrode f = 30 Hz (×200) Noticeable complex oxide-nitride inclusions surrounded by diffusion zones are light areas of the austenitic structure (Fig. 5).
This should contribute to an increase in the mechanical properties of the heat-affected zone and crack resistance of the deposited layer under conditions of thermomechanical loading.
Kovalevska, Parameters of fire-retardant coatings of steel constructions under the influence of climatic factors, Scientific Bulletin of National Mining University. 3 (2019) 46-53.
Online since: July 2014
Authors: Pavel Chelyshkov, Ekaterina Kulikova, Artem Sedov, Andrey Volkov
Buildings are a crucial part of our daily life, on average people spends 85 % of their time performing activities inside of buildings and therefore the quality of the indoor environment is a critical factor affecting the happiness and productivity of building users.The indoor environmental quality has a strong relationship on the thermal conditions of a space which is directly affected by the amount of heat lost or gained due to the properties of the materials used, the external environmental conditions and the inner sources of heat; In consequence, efforts have to be made to maintain proper thermal conditions by means of using natural and mechanical strategies to provide heating, cooling and ventilation.
The level of comfort depends on several personal and environment factors.
The six main factors that define thermal comfort are the following: Personal Factors · Metabolic rate.
Rate of transformation of chemical energy into heat and mechanical work inside the body
Environment Factors · Air temperature.
The level of comfort depends on several personal and environment factors.
The six main factors that define thermal comfort are the following: Personal Factors · Metabolic rate.
Rate of transformation of chemical energy into heat and mechanical work inside the body
Environment Factors · Air temperature.
Online since: September 2024
Authors: Charles Edward L. Alviar, Blessie A. Basilia
This research intends to conduct a multi-objective approach in identifying significant factors that will affect the target response.
It was found that nozzle diameter, infill % and the number of shells are significant factors affecting build time [4].
Birosz et al, studied the effects of infill pattern to mechanical properties with some insight on production data.
Singh, "An overview of mechanical properties and form error for rapid prototyping," CIRP Journal of Manufacturing Science and Technology, vol. 29, pp. 53-70, 2020
Andó, "Effect of FDM infill patterns on mechanical properties," Polymer Testing, vol. 113, p. 107654, 2022
It was found that nozzle diameter, infill % and the number of shells are significant factors affecting build time [4].
Birosz et al, studied the effects of infill pattern to mechanical properties with some insight on production data.
Singh, "An overview of mechanical properties and form error for rapid prototyping," CIRP Journal of Manufacturing Science and Technology, vol. 29, pp. 53-70, 2020
Andó, "Effect of FDM infill patterns on mechanical properties," Polymer Testing, vol. 113, p. 107654, 2022
Online since: June 2025
Authors: Giorgia Prosperi, Jacobo Paredes, Javier Aldazabal
The selection of biomaterials and the design of the scaffold is crucial, as it directly influences the mechanical properties, which in turn affect cell behavior and tissue integration.
Tensile tests were performed to measure mechanical properties, including Young’s Modulus (E), Poisson’s ratio (ν), and porosity—properties critical for understanding the interaction of scaffolds with cells and tissues.
Although the two auxetic structures shared the same undulation angle, the analysis revealed differences in their mechanical properties.
The latter was found to have a significant influence on the functional behaviour of the scaffold [42], affecting the interaction between cells and the structure [43].
Results and Discussion Mechanical Properties The tensile tests were analysed to obtain Young’s Modulus for each geometry.
Tensile tests were performed to measure mechanical properties, including Young’s Modulus (E), Poisson’s ratio (ν), and porosity—properties critical for understanding the interaction of scaffolds with cells and tissues.
Although the two auxetic structures shared the same undulation angle, the analysis revealed differences in their mechanical properties.
The latter was found to have a significant influence on the functional behaviour of the scaffold [42], affecting the interaction between cells and the structure [43].
Results and Discussion Mechanical Properties The tensile tests were analysed to obtain Young’s Modulus for each geometry.
Online since: June 2012
Authors: J.A. Rodrigues, Holmer Savastano, S.F. Santos, G.H.D. Tonoli, A.E.F.S. Almeida
Potential Use of Colloidal Silica in Cement Based Composites: Evaluation of the Mechanical Properties
S.F.
The properties of cement based composites depend not only on the properties of their individual components but also on their interfacial characteristics and transition zone between fiber and matrix.
These reactions are related to a number of factors such as particle size and dispersion, chemical composition, morphology and mineralogy, crystallinity, temperature and presence of activators, among others.
The colloidal state of subdivision consists of particles with a size sufficiently small (≤ 1 µm) not to be affected by gravitational forces but sufficiently large (≥ 1 nm) to show marked deviations from the properties of true solutions.
The content of colloidal silica affected the mechanical behavior of the fiber-cement.
The properties of cement based composites depend not only on the properties of their individual components but also on their interfacial characteristics and transition zone between fiber and matrix.
These reactions are related to a number of factors such as particle size and dispersion, chemical composition, morphology and mineralogy, crystallinity, temperature and presence of activators, among others.
The colloidal state of subdivision consists of particles with a size sufficiently small (≤ 1 µm) not to be affected by gravitational forces but sufficiently large (≥ 1 nm) to show marked deviations from the properties of true solutions.
The content of colloidal silica affected the mechanical behavior of the fiber-cement.
Online since: September 2016
Authors: Badreddine Kchakech, Othman Omikrine-Metalssi, Stéphane Lavaud, Bruno Godart
Consequently, mechanical properties decrease which may cause large structural disorders due to unexpected deformations and additional stresses in concrete and reinforcement.
(2) Many results show that several factors influence the amplitude and the kinetics of the swelling induced by DEF [11,13-14].
The DEF swelling potential at point is then given by: (6) In this expression, the parameter is used to represent all the material factors (such as cement content of the concrete, gypsum content, cement nature…).
The concrete thermal properties were obtained through adiabatic tests on re-constituted concrete samples.
Toutlemonde, Importance of considering the coupling between transfer properties, alkali leaching and expansion in the modelling of concrete beams affected by internal swelling reactions, Construction and Building Materials, 49 (2013) 23–30
(2) Many results show that several factors influence the amplitude and the kinetics of the swelling induced by DEF [11,13-14].
The DEF swelling potential at point is then given by: (6) In this expression, the parameter is used to represent all the material factors (such as cement content of the concrete, gypsum content, cement nature…).
The concrete thermal properties were obtained through adiabatic tests on re-constituted concrete samples.
Toutlemonde, Importance of considering the coupling between transfer properties, alkali leaching and expansion in the modelling of concrete beams affected by internal swelling reactions, Construction and Building Materials, 49 (2013) 23–30
Online since: December 2011
Authors: Li Ping, Wang Ying
Corrosion Behavior and Mechanical Properties of
Reinforcing Bar HRB400 in NaCl Solution
Ping Li1, a, Ying Wang1
1Department of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China
aeappol@163.com
Key Words: Reinforcing bar, Corrosion behavior, Corrosion rate, Mechanical properties
Abstract: The corrosion behavior of reinforcing bar HRB400 in simulated concrete solution (0.5 wt.% NaCl solution) was investigated, and its tensile mechanical properties were tested before and after corrosion.
The corrosion of reinforcing bar is one of main factors to affect the duration of concrete structure, which has attracted people’s extensive attention.
There are two important factors to lead to the corrosion of reinforcing bar [1]: one is the carbonization of concrete, and the other is the inrush of chloride.
The self quality of concrete structure is also one of the main factors to cause the corrosion of reinforcing bar.
The tensile mechanical properties, including yield strength, tensile strength and elongation, are tested by a hydraulic pressure universal testing machine.
The corrosion of reinforcing bar is one of main factors to affect the duration of concrete structure, which has attracted people’s extensive attention.
There are two important factors to lead to the corrosion of reinforcing bar [1]: one is the carbonization of concrete, and the other is the inrush of chloride.
The self quality of concrete structure is also one of the main factors to cause the corrosion of reinforcing bar.
The tensile mechanical properties, including yield strength, tensile strength and elongation, are tested by a hydraulic pressure universal testing machine.
Online since: July 2016
Authors: Razvan Rosculet, Ionut Laurentiu Sandu, Catalin Fetecau
Various researchers [20, 22-23] have revealed conductivity variation according to different factors: CNT amount, temperature, and velocity of the injection/extrusion, strain, etc.
The purpose of this study is to investigate the influence of multi-wall carbon nanotube (MWCNT) content, injection molding temperature and annealing time on the mechanical and electrical properties of the multi-wall carbon nanotube-reinforced thermoplastic polyurethane (TPU/MWCNT) nanocomposites and to determine the most important factors that affect their properties.
Mechanical Properties.
Galiotis, Carbon nanotube–polymer composites: Chemistry, processing, mechanical and electrical properties, Prog.
Gunko, Small but strong: a review of the mechanical properties of carbon nanotube–polymer composites, Carbon 44 (2006) 1624-1652
The purpose of this study is to investigate the influence of multi-wall carbon nanotube (MWCNT) content, injection molding temperature and annealing time on the mechanical and electrical properties of the multi-wall carbon nanotube-reinforced thermoplastic polyurethane (TPU/MWCNT) nanocomposites and to determine the most important factors that affect their properties.
Mechanical Properties.
Galiotis, Carbon nanotube–polymer composites: Chemistry, processing, mechanical and electrical properties, Prog.
Gunko, Small but strong: a review of the mechanical properties of carbon nanotube–polymer composites, Carbon 44 (2006) 1624-1652
Online since: May 2014
Authors: Leszek Adam Dobrzański, Wojciech Borek, Janusz Mazurkiewicz
Application of sheets with lower thickness requires using sheets with higher mechanical properties, however keeping adequate formability.
Advantageous mixture of mechanical properties obtained by these steels, i.e.
Mechanical twinning induced by the cold working of the high-manganese austenitic TWIP steel has a significant effect on forming their structure and mechanical properties.
The high-manganese austenitic steels with the properly formed structure and properties and especially with the big strain energy per unit volume yield the possibility to be used for the constructional elements of cards affecting advantageously the passive safety of the vehicles' passengers.
Schindler, The influence of hot rolling on mechanical properties of high-Mn TWIP steels, Proceedings of the 3rd International Conference on Thermo-mechanical Processing of Steels - TMP‘2008, Padua, 2008 (CD-ROM)
Advantageous mixture of mechanical properties obtained by these steels, i.e.
Mechanical twinning induced by the cold working of the high-manganese austenitic TWIP steel has a significant effect on forming their structure and mechanical properties.
The high-manganese austenitic steels with the properly formed structure and properties and especially with the big strain energy per unit volume yield the possibility to be used for the constructional elements of cards affecting advantageously the passive safety of the vehicles' passengers.
Schindler, The influence of hot rolling on mechanical properties of high-Mn TWIP steels, Proceedings of the 3rd International Conference on Thermo-mechanical Processing of Steels - TMP‘2008, Padua, 2008 (CD-ROM)
Online since: October 2011
Authors: Lin Chang Miao, Fei Wang, Jin Hu Song
Most subsea tunnel routes are located under poor environmental conditions that are characterized by such factors as major fault zones and high water pressure.
The relative hydraulic conductivity of the hazardous-ground zone (kh/kg; simply the relative hydraulic conductivity in this paper) and the distance between the tunnel face and the hazardous zone (dh) are assumed as the major factors affecting the seepage force[2].
Material Properties.
Table 1 Material properties used in the numerical analysis γ (kN/m3) Void ratio E (Mpa) C (kPa) φ’ (°) K (m/s) Ground 19.6 0.9 50 25 20 1e-7 Hazardous zone 19.6 0.9 50 25 20 1e-4 Lining 25 / 20000 / / 1e-10 Analysis Results and Discussions Effects of the Hazardous Zone on the Pore Water Pressure Distribution.
This study is a fully coupled hydro-mechanical analysis.
The relative hydraulic conductivity of the hazardous-ground zone (kh/kg; simply the relative hydraulic conductivity in this paper) and the distance between the tunnel face and the hazardous zone (dh) are assumed as the major factors affecting the seepage force[2].
Material Properties.
Table 1 Material properties used in the numerical analysis γ (kN/m3) Void ratio E (Mpa) C (kPa) φ’ (°) K (m/s) Ground 19.6 0.9 50 25 20 1e-7 Hazardous zone 19.6 0.9 50 25 20 1e-4 Lining 25 / 20000 / / 1e-10 Analysis Results and Discussions Effects of the Hazardous Zone on the Pore Water Pressure Distribution.
This study is a fully coupled hydro-mechanical analysis.