Excerpts

The three-way ANOVA for internal color change was highly significant, with all independent variables and interactions significant at p < 0.0001 except color, which was significant at p = 0.0011.

Therefore, as W content increases, the reaction degree is significantly reduced, ignition delay time presents an increasing trend, and reaction duration gradually decreases.

Furthermore, the tensile modulus has a decreasing trend with increasing SEBS-g-MA.

Flexural properties of BF/HDPE composites exhibited an increasing trend as the BF content increased.

Generally, the LCTE values of BF/Talc/HDPE composites showed a decreasing trend as the BF loading level increased.

Specimens prepared with matrix polymer not recycled before filling (V-15, V-30) show much more modest differences after reprocessing (VP-15, VP-30), not always with a positive trend.

Wood Flour Content Tensile tests showed an increasing trend for the elastic modulus of BioFlex with increasing amounts of filler.

This effect may be associated with the occurrence of the local inhomogeneity of the electric current in the interparticle contacts due to which certain areas of the powder volume may include quite significant porosity.

It is observed that the longitudinal modulus has a slightly increasing trend in the CD region of the tensile curve, which could be related to a reduction of the twisting angle of yarns with tensile load.

Many images were collected and showed a trend that untreated samples (W-U) are more loosely packed than the treated ones (V-U).

As far as bending tests are concerned, an obvious and highly significant effect of the temperature was observed to increase both bending strength and bending modulus.

Therefore, analyzing misfit dislocation and strain fields at the heterostructure interface is highly significant for the material performance improvement and extensive application potential.

A further analysis of the published literature also shows an interesting trend, whereby the percent increase in mechanical properties for polymer composite fibers is related to the inherent polymer structure ( Figure 4 ).

The pore sizes of L121-, P123-, and F127-treated MBGs ranged from 4–16, 1–10, and 1–8 nm with a decreasing trend ( d 50 = 8.7 nm, d 50 = 4.0 nm, and d 50 = 4.1 nm for the L121-, P123- and F127-treated MBG powders).

For a given notch shape, the strain at the notch exhibits an increasing trend with the increase of notch depth, and the growth rate of the strain at the notch increases with the increase of stress as compared with the average strain.

With increasing working pressure an evident trend of phases changing from mixed hexagonal Cr 2 N and face centered cubic CrN structure to approximately stoichiometric Cr 2 N is visible.

The step of spark plasma sintering (SPS) after reactive sintering can be the appropriate way to achieve compacted materials virtually without porosity (or bearing a minimal and almost insignificant porosity level) and with good mechanical properties.

As seen from Figure 6 , for all four cases, G i exhibited a positive trend (i.e., the slopes of the trend lines given by q as shown in Figure 6 were all positive).

The relationship between the porosity obtained via the adsorption of N 2 and the total porosity to water (see Figure 12 ) proved highly significant in this research, which validates both techniques as comparable in terms of their capacity to characterize the porous structures of the RPC.

The axial velocities measured from the simulations, shown in Figure 10 , exhibit a decreasing trend with increasing ε and only small variations in velocity depending on κ .

The mortars in the range M34-78 seemed to exhibit a better resistance without glass-fibers in an increasing trend of flexural strength, unless they were strongly reinforced by the maximum amount of fibers (M70-5; F70-1.7).

There is also a slight trend to higher amounts of dye in the membrane as the volume fraction decreases which would be the case for higher porosity.

The differences in the responses on the replicates of (110,5,13) are not too high: deviations in d and D are small (1% and 2%, respectively), and only deviation in s might be significant (~7%).

The Relationship between θ th and Pit Depth As mentioned in Section 3.1.2 , the threshold angle θ th generally shows a decreasing trend with the increase of the pit depth, that is, θ th is 55°, 45°, and 30° for double shallow ( d = 30 μm), hemi-spherical ( d = 50 μm), and deep pits ( d = 100 μm), respectively.

A decreasing trend is also evident for tensile strength by increasing the percentage of polystyrene aggregate.