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Online since: April 2012
Authors: Cai Xu Yue, Xian Li Liu, Ming Ming Yu, Jia Yi Zhang, Ming Yang Wu
Unit type and number of nodes are shown in Table 2.
Table 2 Unit set of simulation model Model type of unit Number of units Number of nodes Incident bar C3D8 45760 50799 Specimen C3D8 1536 1881 Exit pole C3D8 45760 50799 The meshed model is shown in Fig.2.
Ramesh , Mechanical behavior and dynamic failure of high-strength ultrafine grained tungsten under uniaxial compression.
Table 2 Unit set of simulation model Model type of unit Number of units Number of nodes Incident bar C3D8 45760 50799 Specimen C3D8 1536 1881 Exit pole C3D8 45760 50799 The meshed model is shown in Fig.2.
Ramesh , Mechanical behavior and dynamic failure of high-strength ultrafine grained tungsten under uniaxial compression.
Online since: February 2014
Authors: Tereza Murínová, Karel Kubečka, Pavel Mec
Nowadays there are also various libraries of thermal curves [8], and others can be found in a number of available scientific literatures [1].
At present, construction materials are relatively well understood with regard to thermal behavior and number of the phenomena has been well described.
The number of changes and their size can be determined in this way.
The grains of portlandite (Ca(OH)2) react with carbon dioxide (CO2) to form calcium carbonate (CaCO3) during concrete carbonation [2,5,6,7].
At present, construction materials are relatively well understood with regard to thermal behavior and number of the phenomena has been well described.
The number of changes and their size can be determined in this way.
The grains of portlandite (Ca(OH)2) react with carbon dioxide (CO2) to form calcium carbonate (CaCO3) during concrete carbonation [2,5,6,7].
Online since: September 2013
Authors: Cheng Lin Ma, Heng Qin Xu
It showed that the first generation of carbon emitters was generate electricity and the number of vehicle emissions was also very impressive, especially in 2009, over 13 million car sales, in 2010, far more than in 2009.
The number of recent remained plant life energy was small and its quality was low.
The life energy utilization obtained a large number of applications.
Residual stresses caused by growth stresses within a stem with radially varying spiral grain angle - two numerical solution approaches: finite element method and transfer matrix method.
The number of recent remained plant life energy was small and its quality was low.
The life energy utilization obtained a large number of applications.
Residual stresses caused by growth stresses within a stem with radially varying spiral grain angle - two numerical solution approaches: finite element method and transfer matrix method.
Online since: February 2003
Authors: Henryk Morawiec, B. Kostrubiec, R. Wiśniewski, Józef Rasek
In these alloys studies of their defect
structure (vacancies, dislocations, grain boundaries) are essential for better understanding of time
and temperature instabilities of physical properties and stabilisation of the martensite.
Alloy Heat treatment Number of cycle Temperature [ ]KSA Alloy I Quenching from 973 K/30 min.
This influences the martensite stabilisation effect as well as the number of elementary processes responsible for the decay of quenched-in vacancies.
The number of elementary processes responsible for the decay of quenched-in vacancies during ageing process may be explained by different values in the formation energy of vacancies.
Alloy Heat treatment Number of cycle Temperature [ ]KSA Alloy I Quenching from 973 K/30 min.
This influences the martensite stabilisation effect as well as the number of elementary processes responsible for the decay of quenched-in vacancies.
The number of elementary processes responsible for the decay of quenched-in vacancies during ageing process may be explained by different values in the formation energy of vacancies.
Online since: April 2015
Authors: Michaela Šeďová, Pavel Neuberger, Radomír Adamovský
At the Saint Mary's University in Canada and at the Hokkaido University in Japan the issue of heating water in production ponds, grain drying and pasteurization of milk has been addressed [2].
(R2=0.988) [°C] (2) where: d – number of days from the beginning of the heating season, i.e. from 19 September 2012 The minimum temperature difference between the temperature tr which was measured 1.0 m from the heat exchanger at a depth of 1.5 m and the temperature at a depth of 1.5 m in the vicinity of the heat exchanger t was -0.1 K.
(R2=0.993) [°C] (3) where: d – number of days from the beginning of the heating season, i.e. from 19 September 2012 Fig. 2 shows a gradual increase of the temperature of the ground massif t and the reference temperature tr in the period from 14 April to 31 May 2013.
(R2=0.993) [°C] (5) where: d – number of days from the beginning of the heating season, i.e. from 14 April 2013 In this time period the temperature of the ground massif t gradually increased from 2.82 °C to 11.40 °C.
(R2=0.988) [°C] (2) where: d – number of days from the beginning of the heating season, i.e. from 19 September 2012 The minimum temperature difference between the temperature tr which was measured 1.0 m from the heat exchanger at a depth of 1.5 m and the temperature at a depth of 1.5 m in the vicinity of the heat exchanger t was -0.1 K.
(R2=0.993) [°C] (3) where: d – number of days from the beginning of the heating season, i.e. from 19 September 2012 Fig. 2 shows a gradual increase of the temperature of the ground massif t and the reference temperature tr in the period from 14 April to 31 May 2013.
(R2=0.993) [°C] (5) where: d – number of days from the beginning of the heating season, i.e. from 14 April 2013 In this time period the temperature of the ground massif t gradually increased from 2.82 °C to 11.40 °C.
Online since: June 2015
Authors: Claudiu Nicolicescu, Iulian Ştefan, Bebe Adrian Olei
So, their reactivity is determined by the fineness of the powder particles and the number of point contacts between the particles.
Fig. 1 Homogeneous mixture BaCO3x6α-Fe2O3 As shown in the homogeneous mixture image, hematite particles being much finer than those of BaCO3 are spread as a powder on the barium carbonate pellet, increasing in this way the number of contact points at mixture heating for the ferrite formation.
Therefore, it should be mentioned that if for SM standard mixture were used powders with micron grain size, in the case of the 5SM and 20SM mixtures the majority granulation of hematite powders is in the submicron domain.
The decreases of firing temperature can be explained by increasing the number of the contact points between the small particles of hematite and BaCO3 particle according to the diagram from figure 1.
Fig. 1 Homogeneous mixture BaCO3x6α-Fe2O3 As shown in the homogeneous mixture image, hematite particles being much finer than those of BaCO3 are spread as a powder on the barium carbonate pellet, increasing in this way the number of contact points at mixture heating for the ferrite formation.
Therefore, it should be mentioned that if for SM standard mixture were used powders with micron grain size, in the case of the 5SM and 20SM mixtures the majority granulation of hematite powders is in the submicron domain.
The decreases of firing temperature can be explained by increasing the number of the contact points between the small particles of hematite and BaCO3 particle according to the diagram from figure 1.
Online since: October 2013
Authors: Hong Wei Zhou, Yu Wan Cen, Jian Qing Jiang, Yi Zhu He
Optical micrograph with prior austenite grains (nearly 50 mm) is shown in Fig. 1.
The fatigue life, Nf, is defined as the number of cycles corresponding to a 25% drop in cyclic stress response curves at half-time.
Hong et al. [4] found that above strain amplitude of 0.4% in the LCF of 316L ASS, gradual softening was observed up to some number of cycles, followed by secondaryhardening until failure.
The parameters of cyclic stress response are shown in Table 2, including εae (elastic strain amplitude), εap (plastic strain amplitude) and sa (stress amplitude), all of which are abtained at half-life. 2Nf represents number of reversals to failure.
The fatigue life, Nf, is defined as the number of cycles corresponding to a 25% drop in cyclic stress response curves at half-time.
Hong et al. [4] found that above strain amplitude of 0.4% in the LCF of 316L ASS, gradual softening was observed up to some number of cycles, followed by secondaryhardening until failure.
The parameters of cyclic stress response are shown in Table 2, including εae (elastic strain amplitude), εap (plastic strain amplitude) and sa (stress amplitude), all of which are abtained at half-life. 2Nf represents number of reversals to failure.
Online since: July 2020
Authors: Yuri V. Gulkov, Irina V. Vinogradova, Anna V. Turysheva
According to the company’s financial statements, along with a decrease in demand for pipes, the number of applications for multi-series products increased.
Steel consumption [8] Methods At the final stage of producing steel products, heat treatment is a mandatory procedure, since on coming in contact with the metal surface in the adjacent layer there is a possibility of a sharp jump in temperature, resulting in formation of a fine-grained crust, thereby impairing the quality of metal [9-14].
Finished products include a number of products in the form of pipes, discs, as well as sheets.
MAGSTRONG high-alloyed steels have a number of advantages compared to similar samples and are able to compete with products by other manufacturers.
Steel consumption [8] Methods At the final stage of producing steel products, heat treatment is a mandatory procedure, since on coming in contact with the metal surface in the adjacent layer there is a possibility of a sharp jump in temperature, resulting in formation of a fine-grained crust, thereby impairing the quality of metal [9-14].
Finished products include a number of products in the form of pipes, discs, as well as sheets.
MAGSTRONG high-alloyed steels have a number of advantages compared to similar samples and are able to compete with products by other manufacturers.
Online since: January 2018
Authors: Zbyněk Keršner, Hana Šimonová, Pavel Rovnaník, Libor Topolář, Pavel Schmid
Quartz sand with maximum grain size of 2.5 mm was used as aggregate in order to prepare AAS mortar.
GTDiPS software [4] was used to correct the diagrams (elimination of data point duplication and reduction of the number of such points).
Mechanical fracture parameters are accompanied by parameters of AE signals which were recorder until peak load, namely number of AE events NAE, duration of AE signals DAE, amplitude of AE signals AAE and energy of AE signals EAE.
The addition of graphite powder to AAS caused a decrease in the number of AE events detected until peak load.
GTDiPS software [4] was used to correct the diagrams (elimination of data point duplication and reduction of the number of such points).
Mechanical fracture parameters are accompanied by parameters of AE signals which were recorder until peak load, namely number of AE events NAE, duration of AE signals DAE, amplitude of AE signals AAE and energy of AE signals EAE.
The addition of graphite powder to AAS caused a decrease in the number of AE events detected until peak load.
Online since: October 2018
Authors: Anna A. Voznesenskaya, D.A. Kochuev, Aleksey V. Zhdanov
There is a large number of works devoted to the use of various carbon materials (nanotubes, nanocomposites, diamond-like films [2]) as a means of increasing the bio and hemocompatibility of a medical device.
The interaction of carbon with titanium occurs with the loss of energy of the plasma torch, with the partial formation of a chemical bond and the growth of germs of grains of titanium carbide [12].
The formation of "islands" occurs when CNTs are applied to the surface of polyurethane, with an increase in the number of passes in order to increase the uniformity of the distribution of CNTs on the surface of polyurethane.
Conclusion Several samples of coatings with different experimental parameters (concentration, distance from the nozzle to the substrate, the number of deposited layers) were obtained as a result of the work performed.
The interaction of carbon with titanium occurs with the loss of energy of the plasma torch, with the partial formation of a chemical bond and the growth of germs of grains of titanium carbide [12].
The formation of "islands" occurs when CNTs are applied to the surface of polyurethane, with an increase in the number of passes in order to increase the uniformity of the distribution of CNTs on the surface of polyurethane.
Conclusion Several samples of coatings with different experimental parameters (concentration, distance from the nozzle to the substrate, the number of deposited layers) were obtained as a result of the work performed.