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Online since: October 2013
Authors: Rui Xue Zhao, Zeng Hai Shan, Hong Gang Ding, Hai Yan Zhang, Xue Feng Li, Lei Zhu
(B) Stability safety factor method: Stability factor is defined as the crane suffered various loads generated on the edge of the stability overturning torque and overturning moment ratio.
Stability safety factor as a crane anti-overturning capacity criterion cannot be less than the specified value.
Thus, the same crane stability factor may be different.
Design variables (1-8) are related with overall design of a truck crane, affecting the stability of crane.
Normal distribution has many good properties, has been widely used in mechanical reliability design and analysis.
Online since: November 2011
Authors: Pei Fang Cheng, Jian Qing Wang, Wen Ming Ren
With continual mechanical stirring, resulting in a well-distributed and transparent cellulose/NMMO solution.
Measurements of cellulose films properties.
The key factor in obtaining high performance films is the cellulose concentration in the casting solution which affects the oxygen permeability and skin-section structure of the films [8].
a b c The Effect of coagulation bath temperature.Different coagulation bath temperatures greatly affected the exchange rate of solvent NMMO and water, and so affected the morphology and properties of the resulting films.
Fig. 5 Effect of temperature of coagulation bath on the oxygen permeation flux of cellulose films Conclusions 1) Cotton pulp was found to be the preferred cellulose source; the optimum pulp concentration in the casting solution was found to be 5%; and the preferred temperature for the coagulation bath was 40ºC. 2) For a given coagulation system, a higher cellulose concentration lead to a final film with a lower oxygen permeability. 3) The type of the cellulose pulp was found to affect the oxygen permeability of the films. 4) With an increasing temperature of the coagulation bath, the pore size became larger, resulting in higher oxygen permeability.
Online since: August 2013
Authors: Hamid Nikraz, Ainalem Nega, Behzad Ghadimi, Colin Leek
These various properties of materials component contribute to the complex mechanical behavior of HMA, which can be characterized as viscoelasticity, and plastic under different condition such as temperature, load application and aging [14, 15].
Thus the mechanical behavior of hot mix asphalt should be understood by not only the individual properties of HMA components, but also by considering asphalt binder and aggregate acting together.
Voller, Consideration of hot-mix asphalt thermal properties during compaction, in: D.S.
Luca, Effect of aggregate type, gradation, and compaction level on thermal properties of hot-mix asphalts, Canadian Journal of Civil Engineering, 33 (2006) 1410-1417
Khodaii, Comparing factors aftecting resilient modulus in asphalt mixtures, Transaction A: Civil Engineering, 16 (2009) 367-375
Online since: August 2004
Authors: Yang Bae Jeon, Hyo Jin Kim, Do Won Seo, Ho Chel Yoon, Jae Kyoo Lim
Delale and so on suggested the adhesive bonding theory that the adhesive thickness and properties are different from adherend, solved the problem on the non-symmetrical stress distribution subjected to properties of adherend, greatly distributed for theoretical analysis [2].
Therefore, to figure out the theoretically exact solution is complicated due to specialty of stress and complicacy of effective factors in the adhesive bonding.
These factors are overlap length, overlap width, curing pressure and surface treatment.
The optimum condition determined for experimental factors can improve the bonding technique and design a high strength.
Properties of material shown in Table 2 such as Young's modulus, Poisson's ratio and so on is applied for this FEM model from results of testing tensile-experiment of adhesive and adherend.
Online since: July 2014
Authors: K. Senthil Kumar, Ramanathan Thirumalai, J.S. Senthilkumaar
Main factors affecting the optimum surface finish of the work piece are chip shape, color and chip reduction coefficient.
There were some factors which lead to the crack initiation and propagation during chip formation.
Their popularity stems from an attractive combination of properties, including high strength and excellent resistance to chloride stress corrosion cracking [9].
Factors (parameters) and levels for design of experiments considered in this work are given in Table 1.
“Machining characteristics of Inconel 718 under several cutting conditions based on Taguchi method”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 227, No.9, pp. 1889 – 1897,(2012)
Online since: November 2012
Authors: Xiao Dong Pan, Li Hong Yang, Sheng Ye Zhang, Wei Pu, Ming Sun
Considering the property of bedding landslide, the three-dimensional slope stability analysis program based on VBA of ArcGIS is put forward in this paper.
Layer ⑦1 and Layer ⑦2 are very different in mechanical index, and ⑦2 layer pinch out region is larger.
If each layer in the case of good surface drainage, mechanical parameters of the values shown in Table 1.
A slope of groundwater level subject to significantly affect of precipitation.
The calculation does not take into account to further reduce the mechanical parameters of the sliding surface due to water lubrication.
Online since: October 2010
Authors: Hai Bo Wu, Lian Zhou Jiang, Xiu Qing Zhu, Hai Tao Wu, Yang Li
Soybean dominance comes from a variety of factors, including favorable agronomic characteristics, high-quality edible oil and high-quality protein.
Furthermore, the residual hexane in the commercial oil will affect consumer health.
These processes leave 7-8% residual oil contents in the soybean meal[2] and denature proteins due to high heat exposure rendering the meal deficient in functional properties for food use or further fractionation[3,4].
Three factors - EFSF concentration, the initial pH, inoculation volume, were as independent variable, total oil extraction yields were as response value in this study (Table 2).
However, interactions between EFSF concentration and the initial pH affected on the total oil recovery insignificantly (p>0.05).
Online since: May 2012
Authors: Li Guo, Bing Xie
The main influential factor on the gob stowing effect is filling materials and filling extent.
The main influencing factors of gob stowing effect is filling materials and filling extent.
Different filling materials have different mechanical characteristics.
The two factors belong to material properties and geometry size of filling body.
From the mechanical point of view, the two factors both change the stiffness of filling body.
Online since: March 2020
Authors: Vyacheslav V. Maksarov, Alexander E. Efimov, Taras S. Golikov
Compared with the properties of other structural alloys based on iron and aluminum, a distinctive feature of this class of non-ferrous metals is the difference in the level of physical and mechanical properties.
On the other hand, the particular physical and mechanical properties of titanium Ti alloys adversely affect the technological properties in the manufacture of critical products.
Besides, these factors can reduce the operational ability as a result of the formation of defects on the surface of the manufactured product [1–4].
This fact is confirmed by experimental studies to determine the mechanical properties for a standard Ti-4.5Al-2V sample (Fig. 2a) and with a local inhomogeneous structure (Fig. 2b).
In this case, the critical point remains to take into account the mechanical properties of the local inhomogeneous structure, extended to a depth tc=0.02 mm.
Online since: June 2014
Authors: Unueroh Ufuoma Georgina, Basil Onyekpe
This paper investigates the effect of corrosion on the tensile properties of AISI 1040 steel in seawater.
However, the initial austenitic condition is important to the development of the final microstructure and its mechanical properties [11].
The rate at which austenite decomposes to form pearlite has been reported to depend on the composition of the steel, as well as on other factors such as the austenite grain size[18].
Thomas, The effect of austenitizing temperature upon the microstructure and mechanical properties of experimental Fe/Cr/C steels, Metallurgical Transactions A 10(9) (1979) 1273-1284
Packer, The effect of austenitizingtemperature on the microstructure and mechanical properties of as-quenched 4340 steel, Metallurgical Transactions A 5 (7) (1974)1663-1670
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