Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: November 2021
Authors: Mariusz Król, Przemysław Snopiński, Anna Woźniak
When selecting the material, one should pay attention not only to the existence of a unique microstructure but also to other factors affecting synergistic dislocation and heterogeneous deformation-induced hardening.
In these works, regardless of the examined material, superior mechanical properties were reported.
As expected, ECAP processing increased the mechanical properties of thermally treated AlSi10Mg alloy.
Zhu, Heterogeneous materials: a new class of materials with unprecedented mechanical properties, Mater.
Kim, High-entropy alloys with heterogeneous microstructure: Processing and mechanical properties, Prog.
Online since: February 2023
Authors: Payam Ismael Abdulrahman, Dilshad Kakasor Jaf
Concrete has low tensile strength, and cracks by shrinks, chemical reactions, and other factors [3].
This article discusses the general concept, manufacturing processes, and mechanical properties of self-healing concrete. 2.
Mechanical strength recovery, durability improvement, and microstructural evaluation are the most commonly used techniques and methods for evaluating self-healing concrete. 4.1 Mechanical properties Concrete's mechanical properties primarily include compressive, flexural (3-point bending and 4-point bending), shear, and tensile strength.
The compressive strength test is one of the most commonly used to evaluate the mechanical properties of concrete.
Y., Factors affecting crack repairing capacity of bacteria-based self-healing concrete, Construction and Building Materials. 87 (2015) 1-7
Online since: March 2011
Authors: Joong Hee Lee, Yu Xin He, Da Hu Yao, Yu Qing Zhang, Yan Yi Nan, Xian Li Jun
Mechanical properties were also measured.
MMt was exfoliated in the matrix after the in-situ polymerization, according to the XRD and TEM, which brought about improved properties of PDCPD with small amount MMt dispersed in the matrix.
So, the improvement in mechanical properties of polymers composites with clays is highly dependent on the degree of clay dispersion.
Some researchers demonstrated that many polymers composites with small amounts of well-exfoliated clay can be effectively improved in mechanical, barrier, and thermal properties, as well as flame resistance [2-5] The compound of DCPD with MMt was also investigated by Mitra Yoonessi research group [6-7].
Fig. 5-a SEM of impact fracture of pure PDCPD Fig. 5-b SEM of impact fracture of PDCPD/MMT Composites While fillers have many factors to affect matrix’s mechanical property, such as the size and distribution of particles, the interface afflicting strength between particles and matrix, and morphology particles have itself.
Online since: August 2016
Authors: Dana Stančeková, Marek Sadilek, Jana Petru, Tomáš Zlámal, Miroslav Janota, Dušan Steklac, Marek Kordik
Provides experimental measurement and report of uniformities on the surface of bearing rings - called oval and cradle, metallographic analysis of rings, as well as an analysis of various processes affecting the formation of deformations.
At the moment we try to find a cause of the origin of the above-mentioned deformation after quenching and, thus, via an analysis of suppliers up to an analysis of the production process itself. [4,5,6] An analysis of the origin of deformations The term of deformation of bearing steel contains a range of impact factors that may be analysed via factors listed in the Figure 1. [7-10] Figure 1 Factors affecting deformations of bearing rings An analysis of processes affecting deformations The audit of suppliers of forgings has been conducted as a part of a solution of the problem.
Even conditions of materials after soft annealing affects total conditions of tautness.
This article was funded by the University of Zilina project OPVaV-2009/2.2/04-SORO number (26220220101) - “Intelligent system for nondestructive technologies on evaluation for the functional properties of components of X-ray diffraction ".
Kuzdak, Identification of residual stress and structure properties in surface and subsurface layers of austenitic steel designed for nuclear energetics, EAN 2015 - 53rd Conference on Experimental Stress Analysis. (2015), pp 36-40, [15] J.
Online since: September 2011
Authors: Sen Chieh Su, Po Chun Chang, Shuo Yan Chou, Kong King Shieh, Shao Hsien Chen
However, it still retains superior mechanical properties, resistance to fatigue and high-temperature corrosion resistance under elevated temperatures.
It is deemed that the Nibase alloys have the best high-temperature mechanical properties comparing with other materials [1].
Under an highly elevated temperature, it would still retain excellent mechanical properties, such as tensile strength, fatigue resistance and creep strength etc [2][3].
The main purpose was to discover the significant factors.
The machining process would be able to select an appropriate combination through the formula without affecting the work removal rate in order to meet the requirements for surface roughness. 6.
Online since: July 2015
Authors: Lenka Scheinherrová, Alena Vimmrová, Magdaléna Doleželová
Gypsum main problem is that the moisture has a negative effect on its mechanical properties.
Mechanical properties of the materials were measured on prisms 160 x 40 x 40 mm.
Physical properties.
Mechanical properties.
Water vapor transport properties.
Online since: May 2011
Authors: Yong Shan Xiao, Zhen Yu Zhao, Bai Liu, Li Xin Huang
Introduction In the injection molding production, because of the plastic melt flow properties vary greatly, the structure of the mold products and ever-changing process conditions vary, molding defects are also a wide range, limited empirical formula alone and simple design criteria is difficult to these factors make comprehensive understanding and grasp.
Therefore, the plastic material selects polyamide (PA66 Ultramid A3K: BASF), and the material properties are shown in Tab.1.
Tab.1 Material properties Melt Density 0.94627 g/ cm3 Solid Density 1.1322 g / cm3 Ejection Temperature 180 ºC Recommended Mold Temperature 50 ºC Recommended Melt Temperature 290 ºC Absolute Max.
The presence of weld lines will affect the workpiece surface quality, mechanical properties, will cause serious parts scrapped.
The deformation of causing the biggest factors is the contraction of its plastic parts.
Online since: February 2015
Authors: Bo Wang, De Bing Zhang, Xun Wang, Jing Fu Zhang
The affect of casing eccentricity on stress at the cement ring interface was analyzed.
Analyzing the material mechanical properties of consolidation components, it can be found that the cement ring ontology ultimate strength and deformation ability is far lower than the casing, under the same load conditions, the strain response vary widely, cement ring, casing and the strata rock cementation interface tensile ability will directly affect the sealing reliability of concretion body.
The finite Element Mechanics Model of Combination under the Interface Cementing According to the principle of elastic mechanics and finite element theory can establish corresponding any deep well casing-cement ring-strata rock consolidation plane strain mechanical model.
Article takes into consideration the cement ring interface cementing strength on consolidation stress and strain, the influence of the interface cementation mechanics relation can be described as: (6) σ is the normal contact stress (tensile); kn is the interface normal contact stiffness, be determined by the initial load phase’s slope of linear elastic section; u is the interface contact gap; dn is interface separation factor.
Conclusions 1.Setting up casing-cement ring-strata rock consolidation finite element analysis model which consider the cementing interface contact properties, under different working conditions, influence of casing eccentricity on cement ring interface load is analyzed. 2.Eccentricity influence laws on interfacial contact pressure are bound up with the value of casing pressure and the in-situ stress.
Online since: October 2013
Authors: Chong Yang Gao, Ying Lin Ke, Jian Zhang Xiao
It is found that the static SC factor (SCF) of CFRP plates varies with the dimensionless bore and zigzag angle by a greater change than isotropic plates, and that the dynamic response amplitude and frequency of the SCF depend on the dimensionless bore and the dimensionless wave number related with material properties and the exciting frequency.
The mechanical properties of the material are listed in Table 1.
Table 1 Mechanical properties of a typical CFRP material (GPa) (GPa) (GPa) (GPa) (GPa) (GPa) 139 9.4 9.4 4.5 2.98 4.5 0.31 0.33 0.31 A single-ply composite plate with multiple circular holes was modeled in ABAQUS for the FE analysis of stress concentration.
The material properties are related with the DSCF but not the static SCF.
Wang: Journal of mechanical strength (Chinese) Vol. 27 (2005) p. 651
Online since: October 2016
Authors: Milan Vukcevic, Nikola Sibalic
The mechanical and physical properties of the basic material are given in Table 2.
Levels of variation of input factors.
(3) where Xi are the real values of factors, wi is the interval of the factor variation and X0i is the basic level factors Xi [8].
The largest part of the samples, was broken in the heat-affected zone - HAZ, due to the presence of residual stress, which weakened the mechanical characteristics of the material.
Zhilyaev, Microstructure and Properties of Copper Alloys after Friction Stir Welding/Processing, in: R.S.
Showing 6191 to 6200 of 26166 items