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Online since: January 2021
Authors: Chang Jiu Li, Yu Juan Li, Ying Kang Wei, Xiao Tao Luo
According to the data reported by Li et al [6], the conductivity of cold-sprayed Cu varies greatly in different directions and the anisotropy is obvious.
The positive effect is attributed to the healing of non-bonded ineterfaces and the reduction of grain boundary arising from the grain growth.
The positive effect is attributed to the healing of non-bonded ineterfaces and the reduction of grain boundary arising from the grain growth.
Online since: February 2021
Authors: Ali Dad Chandio
On the other hand, Zr doped sample exhibited different microstructural features (Fig. 2b), since gradual reduction of substrate elements in BC is seen.
However, the examination of Zr doped BCs showed no stresses (see Fig. 2b), wherein linearity of the curve and large scatter in data points is indicative of absence of stresses.
However, the examination of Zr doped BCs showed no stresses (see Fig. 2b), wherein linearity of the curve and large scatter in data points is indicative of absence of stresses.
Online since: November 2013
Authors: Bai Ru Shi, He Liu, Li Chen Zheng, Lin Chen, Qing Hai Yang, Xiao Han Pei
High expansion rates are possible as the softness of the material under thermal input allows it to be reshaped to the surrounding tubular or to the surrounding open hole from a smaller size during run in and to effectively retain a sealed configuration after getting stiff on reduction in its core temperature while longitudinally compressed.
The device, as shown in Fig. 6, should be able to access pore systems, move through the pores, assess pore content and be able to store and transmit data relating to fluid flow and reservoir properties such as temperature, pressure, viscosity, relative permeability, pore throat size, porosity, permeability, etc.
The device, as shown in Fig. 6, should be able to access pore systems, move through the pores, assess pore content and be able to store and transmit data relating to fluid flow and reservoir properties such as temperature, pressure, viscosity, relative permeability, pore throat size, porosity, permeability, etc.
Online since: April 2008
Authors: Ian J. Davies, Sudarisman Sudarisman
However, it should be noted that if the fibre volume fraction becomes too high then,
accordingly, the matrix volume fraction will become too low, leading to a reduction in the amount
of matrix surrounding the fibres and decreased structural integrity of the composite.
Properties of the constituent materials (data supplied by the respective manufacturers) Property Fibre a) Matrix b) Tensile strength (MPa) Tensile modulus (GPa) Density (g/cm 3) 2480 338 1.80 96 3.0 1.14 a) Colan Products Pty.
Properties of the constituent materials (data supplied by the respective manufacturers) Property Fibre a) Matrix b) Tensile strength (MPa) Tensile modulus (GPa) Density (g/cm 3) 2480 338 1.80 96 3.0 1.14 a) Colan Products Pty.
Online since: November 2011
Authors: Daniel Vallée, Aali R. Alizadeh, James Beaudoin, Nicholas Randall, Luca Sorelli
It was proposed that silanol-water-silanol bonds (source of interlayer cohesion) are replaced by SiO-—Ca2+—SiO- bonds when C/S ratio increases causing a reduction in the interlayer space.
The data are then analyzed by deconvoluting the discrete experimental distribution values P(x) of the mechanical properties x = (H, M) by the sum of n theoretical probability distribution functions pJ, one for each mechanically distinct phase [11]: (2) where μJ and sJ are the mean and standard deviation of x = (M, H, TF) of the phase J = 1,n; fJ is the volume fraction of the phase composing the heterogeneous material; P(xi) is the measured value of the normalized frequency; wx=1/3 is a weight coefficient; m is the number of intervals (bins) by which the problem is discretized; and pJ is the value of the theoretical probability density function of the single phase, which is assumed to be a normal distribution , where μJ and sJ(H) represent the mean and standard deviation, respectively.
The data are then analyzed by deconvoluting the discrete experimental distribution values P(x) of the mechanical properties x = (H, M) by the sum of n theoretical probability distribution functions pJ, one for each mechanically distinct phase [11]: (2) where μJ and sJ are the mean and standard deviation of x = (M, H, TF) of the phase J = 1,n; fJ is the volume fraction of the phase composing the heterogeneous material; P(xi) is the measured value of the normalized frequency; wx=1/3 is a weight coefficient; m is the number of intervals (bins) by which the problem is discretized; and pJ is the value of the theoretical probability density function of the single phase, which is assumed to be a normal distribution , where μJ and sJ(H) represent the mean and standard deviation, respectively.
Online since: May 2011
Authors: Ke Xu Hu, Yan Bo Zhang, Kai Xu
Experimental study on Mechanical Properties of New Self-compacting Concrete for Strengthening Engineering
Kexu HU1, a, Yanbo ZHANG2,b and Kai XU3,c
1,2Research Institute of Structural Engineering and Disaster Reduction.
results of grouting material at different ages Age Test Value(MPa) Average Value (MPa) Flexural Strength 1d 6.8 6.6 6.5 6.6 3d 7.5 7.6 7.5 7.5 7d 7.9 8.0 7.6 7.8 28d 11.3 10.9 11.4 11.2 Compressive Strength 1d 45.8 45.1 43.6 44.4 40.6 40.5 43.3 3d 67.6 66.2 68.4 65.7 66.8 67.4 67.0 7d 71.5 74.4 75.2 76.7 74.8 73.6 74.4 28d 82.0 76.3 81.6 79.0 81.2 81.0 80.2 a) Bonding to concrete b)Bonding to steel plate c)Bonding between concrete Fig. 3 Test of shear strength of interfacial Table 5 Tensile bond strength test results of grouting material bonded to concrete or steel plate Bonded to Age Test Value(MPa) Average Value(MPa) Concrete 7d 2.10 1.90 2.13 2.04 1.97 1.99 1.88 1.84 2.03 2.07 1.94 28d 3.00 3.52* 2.42 3.07* 2.58 2.70 2.93 2.56 1.63* 1.85* 1.73* Steel plate 7d 0.39* 0.27 0.24 0.30 0.29 0.28 0.28 0.30 0.29 0.27 0.27 28d 0.41 0.47* 0.24* 0.24* 0.45* 0.38 0.41 0.36 0.36 0.44 0.30 * More than 20% above average for the invalid data
results of grouting material at different ages Age Test Value(MPa) Average Value (MPa) Flexural Strength 1d 6.8 6.6 6.5 6.6 3d 7.5 7.6 7.5 7.5 7d 7.9 8.0 7.6 7.8 28d 11.3 10.9 11.4 11.2 Compressive Strength 1d 45.8 45.1 43.6 44.4 40.6 40.5 43.3 3d 67.6 66.2 68.4 65.7 66.8 67.4 67.0 7d 71.5 74.4 75.2 76.7 74.8 73.6 74.4 28d 82.0 76.3 81.6 79.0 81.2 81.0 80.2 a) Bonding to concrete b)Bonding to steel plate c)Bonding between concrete Fig. 3 Test of shear strength of interfacial Table 5 Tensile bond strength test results of grouting material bonded to concrete or steel plate Bonded to Age Test Value(MPa) Average Value(MPa) Concrete 7d 2.10 1.90 2.13 2.04 1.97 1.99 1.88 1.84 2.03 2.07 1.94 28d 3.00 3.52* 2.42 3.07* 2.58 2.70 2.93 2.56 1.63* 1.85* 1.73* Steel plate 7d 0.39* 0.27 0.24 0.30 0.29 0.28 0.28 0.30 0.29 0.27 0.27 28d 0.41 0.47* 0.24* 0.24* 0.45* 0.38 0.41 0.36 0.36 0.44 0.30 * More than 20% above average for the invalid data
Online since: March 2007
Authors: S.S. Tzeng, Wei Min Wu, J.S. Hsu
It is
also noted that the data scatter more for the DLC films on mp-alumina.
They pointed out that when the surface bias voltage increases a graphitization of the samples appears (the cluster size increases) and a reduction of the hydrogen content is recorded.
They pointed out that when the surface bias voltage increases a graphitization of the samples appears (the cluster size increases) and a reduction of the hydrogen content is recorded.
Online since: August 2005
Authors: L. Fano, V. Fano, W.Y. Ma, X.G. Wang
In Table 2, Ra data related to the one-step light-activated
samples showed values of some tens of nanometers (43-48 nm), that are larger than macromolecule
bumps (few nanometers).
In literature, it has been reported that in VLC composites the reduction of the polymerization contraction stress can be obtained by two step light-activation [16] or soft start approach [17] produced by low intensity light.
In literature, it has been reported that in VLC composites the reduction of the polymerization contraction stress can be obtained by two step light-activation [16] or soft start approach [17] produced by low intensity light.
Processing and Characterization of Pure Nickel Sheets by Constrained Groove Pressing (CGP) Technique
Online since: December 2010
Authors: T. Raghu, S.S. Satheesh Kumar
The load-stroke data obtained from the tensile tests are converted to engineering stress-engineering strain and true stress-true strain curves following the standard procedures.
During subsequent passes of CGP, the reduction in grain sizes are marginal (Table 1) and at the end of third pass the average grain size estimated is observed to be 12 µm.
During subsequent passes of CGP, the reduction in grain sizes are marginal (Table 1) and at the end of third pass the average grain size estimated is observed to be 12 µm.