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Online since: September 2016
Authors: N.A. Mashkin, E.A. Bartenjeva
Foamer Influence on the Foam Concrete Properties Obtained in the High-Speed Foam Generator
N.A.
The physical and mechanical properties of the non-autoclaved aerated concrete produced with investigated foams are defined.
The non-autoclaved aerated concrete samples with physical and mechanical properties allowing its use in production are produced.
Air-entraining surfactant species play an important role in providing with required properties of foam concrete mix and non-autoclave foam concretes.
The index of surfactant species foaming capacity and foam properties depend on materials nature, their concentration, temperature, medium pH value, mixing intensity, air entrainment apparatus, and other factors [5, 6].
The physical and mechanical properties of the non-autoclaved aerated concrete produced with investigated foams are defined.
The non-autoclaved aerated concrete samples with physical and mechanical properties allowing its use in production are produced.
Air-entraining surfactant species play an important role in providing with required properties of foam concrete mix and non-autoclave foam concretes.
The index of surfactant species foaming capacity and foam properties depend on materials nature, their concentration, temperature, medium pH value, mixing intensity, air entrainment apparatus, and other factors [5, 6].
Online since: July 2014
Authors: Tong Ning Wang, Wei Hong Guo, Guo Bin Tang
Environment effects can influence mechanical performance of the bridge including carbonation of concrete, freeze-thaw damage, steel corrosion, acid rain et al., and it is one of main factors affecting concrete bridge deterioration.
The mechanical behavior of corrode steel has a great influence on long term performance and service life of concrete bridge.
The nominal properties bear a relation to initial cross-sectional area, and they indicate the mechanical performance of corroded bar.
Although it can’t show the essence of corrosion, it can simulate the time-dependent properties of the corroded reinforcing steel, and use in the prediction of long term performance of reinforced concrete structure.
Experimental study on the deterioration of mechanical properties of corroded steel bars, China Civil Engineering Journal, Vol. 12(2008), p. 42-47.
The mechanical behavior of corrode steel has a great influence on long term performance and service life of concrete bridge.
The nominal properties bear a relation to initial cross-sectional area, and they indicate the mechanical performance of corroded bar.
Although it can’t show the essence of corrosion, it can simulate the time-dependent properties of the corroded reinforcing steel, and use in the prediction of long term performance of reinforced concrete structure.
Experimental study on the deterioration of mechanical properties of corroded steel bars, China Civil Engineering Journal, Vol. 12(2008), p. 42-47.
Online since: December 2012
Authors: Bao Guo Yao, Li Xia Yan, Shui Yuan Hong, Jian Chao Wang
The fabric handle mainly depends on its basic physical and mechanical properties, especially the initial low-stress region of those properties.
The compression property of fabrics is one of the basic physical and mechanical properties, closely related to fabric handle, softness and fullness.
Dominique Dupuis’s study demonstrated that interlacing is the major factor that influences the compression properties of fabric not the fiber arrangement, based on the KES system [11].
Therefore, the fabrics’ behaviors significantly affect the compression properties of all indices.
Ghosh, Online measurement of fabric mechanical properties: compressional behavior.
The compression property of fabrics is one of the basic physical and mechanical properties, closely related to fabric handle, softness and fullness.
Dominique Dupuis’s study demonstrated that interlacing is the major factor that influences the compression properties of fabric not the fiber arrangement, based on the KES system [11].
Therefore, the fabrics’ behaviors significantly affect the compression properties of all indices.
Ghosh, Online measurement of fabric mechanical properties: compressional behavior.
Online since: February 2022
Authors: Vladimir I. Bobkov, Elvira V. Morgunova
Analysis of the Granulometric Composition of the Feedstock Influence on Mechanical Properties of Iron Ore Pellets
Vladimir I.
The mechanical properties of the pellets depend on the firing temperature, holding time at this temperature, heating and cooling rates (Fig. 1).
The change in these indicators is associated with the chemical and mineralogical composition of the pellets and determines their mechanical properties [16, 17].
The cooling mode of the pellets is a very important factor affecting thepellets properties, the design and performance of the equipment used for firing.
Figure 10 shows that the optimal mechanical properties of the pellets are obtained at 86% content of the fraction <0.04 mm.
The mechanical properties of the pellets depend on the firing temperature, holding time at this temperature, heating and cooling rates (Fig. 1).
The change in these indicators is associated with the chemical and mineralogical composition of the pellets and determines their mechanical properties [16, 17].
The cooling mode of the pellets is a very important factor affecting thepellets properties, the design and performance of the equipment used for firing.
Figure 10 shows that the optimal mechanical properties of the pellets are obtained at 86% content of the fraction <0.04 mm.
Experimental Research on the Effect of the Rotary Friction Welding Process on Carbon Steel AISI 1030
Online since: December 2022
Authors: Pham Quang Trung, Phan Bao Hoai Nam
The results reveal that friction pressure and friction time are the main factors of this welding process.
The properties and mechanical properties of welded samples were investigated to consider the effect of the condition process.
Because of the absence of the dendritic structure, this welding method produces better mechanical properties than other fusion welding methods.
This is the area that causes poor mechanical properties.
Mechanical Properties and Microstructure, in welded joints of Low and Medium Carbon Steels, Applying Rotary Friction.
The properties and mechanical properties of welded samples were investigated to consider the effect of the condition process.
Because of the absence of the dendritic structure, this welding method produces better mechanical properties than other fusion welding methods.
This is the area that causes poor mechanical properties.
Mechanical Properties and Microstructure, in welded joints of Low and Medium Carbon Steels, Applying Rotary Friction.
Online since: September 2014
Authors: A. Tridello, D.S. Paolino, G. Chiandussi, Massimo Rossetto
Experimental tests investigating very-high-cycle fatigue (VHCF) properties of materials are commonly performed with ultrasonic testing machines, which allow for a significant reduction of testing time.
In order to evaluate the effect of tested material volume (size-effect) on VHCF properties, the Authors recently proposed to adopt Gaussian specimens for VHCF tests.
The needs of specific industrial fields (aerospace, mechanical and energy industry) for structural components with increasingly large fatigue lives, up to 1010 cycles (gigacycle fatigue), requested for a more detailed investigation on the experimental properties of materials in the VHCF regime.
Recently, the research on VHCF focused on the study of factors affecting VHCF properties of materials: in particular, size-effects have gained significant attention [2].
Dissipated mechanical power density.
In order to evaluate the effect of tested material volume (size-effect) on VHCF properties, the Authors recently proposed to adopt Gaussian specimens for VHCF tests.
The needs of specific industrial fields (aerospace, mechanical and energy industry) for structural components with increasingly large fatigue lives, up to 1010 cycles (gigacycle fatigue), requested for a more detailed investigation on the experimental properties of materials in the VHCF regime.
Recently, the research on VHCF focused on the study of factors affecting VHCF properties of materials: in particular, size-effects have gained significant attention [2].
Dissipated mechanical power density.
Online since: June 2014
Authors: Yu Mei Zhang, Hai Ming Cheng, En Jie Zhang, Xue Min Yin, Hua Ping Wang
The mechanical properties, dynamic mechanical properties (DMA) and supramolecular structure of PAN fiber were analyzed.
Both drawing and removal of solvent can increase the mechanical properties of the fibers.
Liang et al. [10] discussed the changes in formation and evolution of porosity structure during spinning process and found that porosity structure can affect the fiber’s resultant physical properties.
The relationship between the structure and properties during the spinning process was investigated by combining mechanical testing and dynamic mechanical analysis (DMA).
Mechanical properties Samples were washed with hot water to remove residual solvents and dried to constant weight.
Both drawing and removal of solvent can increase the mechanical properties of the fibers.
Liang et al. [10] discussed the changes in formation and evolution of porosity structure during spinning process and found that porosity structure can affect the fiber’s resultant physical properties.
The relationship between the structure and properties during the spinning process was investigated by combining mechanical testing and dynamic mechanical analysis (DMA).
Mechanical properties Samples were washed with hot water to remove residual solvents and dried to constant weight.
Online since: August 2021
Authors: Andrey Pustovgar, Liubov Adamtsevich, Aleksey Adamtsevich
Materials’ Properties for 3DCP
Material for 3DCP should have a set of properties, which it was proposed [30] to subdivide into the following groups: "Printability", "Mechanical properties", "Durability".
Speaking about mechanical properties, some authors also consider mechanical properties of fresh 3DPC.
Tan, Mechanical properties and deformation behaviour of early age concrete in the context of digital construction, Compos.
Ye, Mechanical properties of structures 3D printed with cementitious powders, Constr.
Naoum, Factors influencing labor productivity on construction sites, Int.
Speaking about mechanical properties, some authors also consider mechanical properties of fresh 3DPC.
Tan, Mechanical properties and deformation behaviour of early age concrete in the context of digital construction, Compos.
Ye, Mechanical properties of structures 3D printed with cementitious powders, Constr.
Naoum, Factors influencing labor productivity on construction sites, Int.
Online since: June 2013
Authors: Ján Piteľ, Miroslav Gombár, Ján Kmec, Peter Michal, Alena Vagaská
The effects of six factors, affecting during the acid zinc plating process as its technological conditions, on the thickness of the resulting zinc coating has been examined.
Zinc coating reduces the coefficient of friction and provides a lot of optical properties [6].
Factors of zincing process.
Further research in this area tends to increase the reliability of the computational model by identifying other factors affecting the thickness of deposited zinc coating.
Strojarstvo: Journal for Theory and Application in Mechanical Engineering.
Zinc coating reduces the coefficient of friction and provides a lot of optical properties [6].
Factors of zincing process.
Further research in this area tends to increase the reliability of the computational model by identifying other factors affecting the thickness of deposited zinc coating.
Strojarstvo: Journal for Theory and Application in Mechanical Engineering.
Online since: September 2015
Authors: Jacek Mucha, Ľuboš Kaščák, Emil Spišák
The paper presents the results of evaluation of clinched joint properties.
The tension test and microhardness test were used for the evaluation of clinched joint properties.
The following tests were performed for evaluation of the properties of the joints: tensile test and microhardnesses test.
Clinching has proven to be a suitable mechanical joining method for the observed combinations of materials; however, factors affecting the properties of the clinched joints have to be taken into consideration, such as the type of materials to be joined, their position with regard to the punch and die, as well as their thickness and mechanical properties.
Malakondaiah, Effect of vanadium and titanium modification on the microstructure and mechanical properties of a microalloyed HSLA steel, Mater.
The tension test and microhardness test were used for the evaluation of clinched joint properties.
The following tests were performed for evaluation of the properties of the joints: tensile test and microhardnesses test.
Clinching has proven to be a suitable mechanical joining method for the observed combinations of materials; however, factors affecting the properties of the clinched joints have to be taken into consideration, such as the type of materials to be joined, their position with regard to the punch and die, as well as their thickness and mechanical properties.
Malakondaiah, Effect of vanadium and titanium modification on the microstructure and mechanical properties of a microalloyed HSLA steel, Mater.