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Online since: November 2017
Authors: Lev N. Rabinskiy, Sergey A. Sitnikov, Veniamin A. Pogodin, Andrey A. Ripetskiy, Yury O. Solyaev
Note that the pre-application of the epoxy-based binder simplified the process of powder spreading during 3-D printing, due to the reduction of the negative effects of electrostatic agglomeration and dust formation.
The input data for printing had an ISO 7-bit (G-code) format.
When the temperature in the furnace reached 1400 °C and there was a strong reduction in nitrogen consumption, heating was stopped, since the reaction sintering process could be considered completed.
Online since: March 2018
Authors: Dua O. Weraikat, Adnan I.O. Zaid
The maximum reduction in fatigue life was 80.69% in case of 0.08% Ta addition and the minimum reduction was 45.22% in case of 0.04% Ta addition.
Histogram of Fatigue Data for ZA5 and its micro-alloys References [1] Budinski, K.G. (1992), "Engineering Materials Properties and Selection", 4th Edition, Prentice-Hall, Inc., New Jersey
Online since: August 2014
Authors: Martin Zachar, Iveta Mitterová, Eva Ružinská, Krzysztof J. Krajewski
An important criterion in eco-proposal for reduction, respectively substantial elimination of the presence of dust is to achieve the required quality of coating systems without the presence of pollutant particulates (PM10, PM2,5 ), which would be manifested as defects in the coating films in the form of mechanical impurities.
Evaluated values of specific surface of prepared bicomponent fibers Sample The specific surface (m2/g) PP – pure polypropylene fibers 4,68 PP/PA6/M 80/20/0 4,85 PP/PA6/M 80/19/1 4,98 PP/PA6/M 80/18/2 5,13 separated microfibers 30,91 From the data (Table 1) it is evident that the addition of polyamide components is reflected in increased crystallinity of polypropylene and overall pre-orientation of non-drawn fibers.
Krajewski: Evaluation the supramolecular structure bicomponent fibers for preparation of filters for efficient reduction of hazardous substances in the process of surface treatment of wood.
Online since: August 2019
Authors: Marina A. Akulova, Alla G. Sokolova, Tatjana E. Slizneva, Pavel Razgovorov
Introduction Activation of liquid phase before mixing concrete ingredients with water is considered to be an important strategic direction aimed at enhancement of strength properties of cement concretes provided the reduction in consumption of material resources.
According to the presented data, if mixing liquid passed through the preliminary mechanic magnetic activation, it could be possible to reduce the amount of additives 3.75-fold for Na2S2O3 and up to 30-fold for CaCl2.
The important distinguishing characteristic of the X-ray diffraction images of the researched specimen is the reduction of Portlandite reflex dn = 4.91 for activated specimens that could be explained by crystallization of a large quantity of other calcium compounds, in particular, calcium carbonate.
Online since: October 2015
Authors: Pavel S. Volegov, Peter V. Trusov, Dmitry S. Gribov, Alexey I. Shveykin
Under the hypothesis of critical shear stress rates additivity on the slip system due to different mechanisms of hardening, the power law (3) is supplemented by terms that take into account the basic mechanisms of obstacles during the plastic deformation, which is not accounted by the first (power) part: (4) where ; и are sets of internal variables that characterize the corresponding mechanisms (in general, they take different values ​​at each moment of deformation for different slip systems) [10]; the term describes the additional hardening due to reactions on the split dislocations, allows to take into account the reduction of the critical stress for the reverse slip due to the dislocation annihilation, describes the additional hardening that occurs in the interaction of intragranular dislocations with grain boundaries.
Clearly visible reduction of the yield strength when the sign change of deformation: from 32 MPa initially to 28 MPa after the first change of deformation direction, and from 34 MPa to 30 MPa in the second cycle.
According to the data obtained in [12], depending on the angle disproportion φ (8) additional hardening appearing at disproportionate loading changes significantly.
Online since: May 2012
Authors: Yu Ye Zhang, Hong Yi Wei, Wei Hu, Wan Cheng Yuan
Seismic Performance of SFRC Piers under Reversed Cyclic Loading Yuye Zhang1,a, Hongyi Wei1,b, Wancheng Yuan1,c and Wei Hu1,d 1State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, 200092, China a2086zyy@tongji.edu.cn, bWei_hongyi@163.com, cyuan@tongji.edu.cn, ddaisay@126.com Keywords: Steel fiber, Reinforced concrete, Bridge piers, Seismic performance, Cyclic loading, Pseudo-static tests.
Based on the data measured by the displacement sensors on the top of piers, the horizontal loading-displacement hysteretic curves of eight specimens are obtained.
Acknowledgements This work was supported by the National Nature Science Foundation of China (Grants No.50978194 and 90915011), and the Independent Research Fund of State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University.
Online since: September 2017
Authors: Elena Valentina Stoian, Vasile Bratu, Ivona Camelia Petre, C. Marius Vlădulescu, Aurel Gaba, Maria Cristiana Enescu
The concentration was determined according to the nomogram in Fig. 4, using the experimental data .
New type of combustion air pre-heater for cold end corrosion and fuel reduction With the simulation for this configuration of the air pre-heater shown in Fig. 8, a new skin temperature for the first row (for the combustion air flow) of tubes from the upper bundle is TS = 169 ºC.
Bennett; Chemical reduction of sulfur trioxide and particulates from heavy oil – Apollo Chemical Corporation, Wippany, New Jersey; 07981 [20] J.E.
Online since: July 2021
Authors: Pietro Bia, Daniele Santoro, Umberto Lecci, Fabio Massimo Pera, Domenico Gaetano, Antonio Manna
In many cases, aluminum parts were integrated in composite structure as structural and heat-exchange purpose allowing a weight-reduction without losing mechanical properties [8].
Furthermore, composite materials such as fiberglass or aramidic fibers (plus epoxy resin), are able to guarantee good electromagnetic transparency without causing reduction in sensor’s performance [9,10,11].
As previously discussed, experimental data were elaborated taking into account the guidelines provided by MIL-HDBK-5J Notice 2 for the estimation of the allowable stress for calibration of FE model purpose.
Online since: July 2004
Authors: Claudio Shyinti Kiminami, Walter José Botta Filho, Claudemiro Bolfarini, C. Triveño Rios
This transition occurs in response to the changes of reduction of interfacial growth velocity to critical values due to recalescence effects [8].
Moreover, the growth of the Si particles is controlled, mainly, by volume diffusion mechanisms [4], which are associated with very slow cooling rates of ~1.5 K/s obtained during the solidification of the spray-deposit [11], and they are in good agreement with literature data [5, 12].
Conclusions Spray forming showed to be suitable to induce microstructural modifications in the morphology and reduction of size and amount of the intermetallic phases formed in the Al-9Si-3Cu alloy.
Online since: July 2011
Authors: Hong Zhang, Li Jun Li, Yan Lai Zhang, Ming Long Zhang, Chuan Mei Liu, Lei Luo
Therefore, the energy conservation and exhaust reduction in the wood drying process is a quite important task.
Therefore, the task of energy conservation and emission reduction is very onerous.The research and promotion using solar drying wood has been launched in many countries in the world, but more research is conducted in developed countries such as the United States, Britain, France, Germany and Japan and so on.
According to incomplete statistical data, the total drying capacity of solar drying wood accounts for approximately 0.2% [5].
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