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Influence of SBR on mechanical properties of cement mortar Various properties of cement mortar such as the tensile bond strength, flexural strength, flexibility and anti-impacting property are improved significantly by SBR addition.
mp/mc=0%mc=0% mp/mc=8%mc=0% Fig. 5 Second electron images of SBR latex-modified mortars cured for 28 days Interface structure between the aggregates and cement paste is a key factor affecting cement mortar properties.
The weak structure at the interface decreases the mechanical properties and durability.
It is beneficial to the improvement of mechanical properties and durability of cement mortar [20].
Improvement of the mechanical properties and waterproofness is partly resulted from the modification of SBR to the microstructure of cement mortar.

Dynamic vibration and static deformation are two main factors that affect the machining quality in a long slender shaft turning operation.
The mechanical parts such as the screw of machine tool, the camshaft of engine and the broach of broaching machine are typically slender shafts which play a very critical role in the mechanical structure.
Therefore, as the force-induced deformation and vibration being the major factors that affect the machining quality of a slender shaft turning, considering the forces and the constraint conditions, obtaining the direct receptance at the cutting point, building a regenerative chatter model and analyzing the effect of cutting conditions on the SLD, will have a important theoretical significance and pratical value.
As the dynamic displacement in Eq.(4) can be determined using the dynamic properties of the structures, transfer function or frequency response function, and the dynamic cutting force.
The SLD corresponding to position at x/l = 0.6 shows that it is also affected by the second modal of the beam besides the first one (at 225 Hz).

Fundamental mechanical characteristics were evaluated prior to the bond fracture test.
The behavior of strengthened structures will be a composite action of concrete and FRP materials, and will be affected by various factors including mechanical properties of FRP, size and ratio of strengthening, and types of adhesive [3].
The basalt fibers used had about 10µm in diameter and primary chemical composition and mechanical properties are addressed in Table 1 and 2, respectively.
(a) rolled basalt fiber sheet (b) closed view of woven basalt fiber sheet Fig. 1 Basalt fiber sheets as a concrete structure strengthening material Table 1 Primary chemical compositions Table 2 Mechanical properties SiO2 Al2O3 Fe2O3 CaO MgO 49 14 12 9.5 5 Diameter (µm) Density (g/cm3) σtensile (MPa) E (GPa) εultimate 10.6 2.6 992.4 7.6 2.56 (a) schematics of specimen (b) specimens under curing Fig. 2 Specimens for bonding strength test Analysis of Discussions From the tests, ultimate applied load was measured and failure mode was observed.
In addition, rather than the overall bonding area, the aspect ratio of bonding area was more important factor affecting the bonding strength.

The tensile test is one of the most common and important test methods to evaluate the material properties.
Various material test samples will reflect different physical properties and mechanical properties during the tensile test.
Special attention shall be paid to prevent the stress concentration from affecting the test result due to the poor surface roughness on the test sample.
Many factors influence the decarburization, such as the chemical composition of the steel material, heating temperature, press quenching time and heating atmosphere.
In addition to the routine properties test requirement, there are some more special properties test requirements, such as the three-point bending test and the bumper impact test etc..

Short-term viscoelastic properties (loss and storage moduli) of a studied semi-crystalline thermoplastic polymer were obtained using Dynamic Mechanical Analysis, while its long-term viscoelastic properties (compliances) were determined using creep tests. 1.
Previous tests performed on the studied material determined strain-rate- and temperature-dependency of its mechanical properties [2] but no quantitative description of the viscoelastic properties was obtained.
Furthermore, the amplitude affects dynamic properties, as the elastic potential decreases with strain.
Conclusions This paper presented a series of tests that were performed in order to obtain a quantitative description of variation of mechanical properties of the studied poly-amide-based semi-crystalline thermoplastic polymer [9] with two major factors: time and temperature.
[11] ASTM D 4440 – 01 Standard Test Method for Plastics: Dynamic Mechanical Properties Melt Rheology1200.

Properties, such as thermal conductivity, dielectric constant of Si3N4-filled epoxy resin composite were evaluated, the effect of the content of Si3N4 and surface treatment of the filler was also considered.
From the theoretical view, we particularly discussed the main factors that affect the thermal conductivity of the composite.
The model of Agari's considers the effect of dispersion state by introducing the factors Cf and Cp: Log λc = A⋅Vf + B (A = Cflogλf − log(Cp⋅λm), B = log(Cp⋅λm)) (1) where Vf is the volume fraction of filler; λc, the thermal conductivity of composite; λf, the thermal conductivity of filler; λm, the thermal conductivity of matrix; Cp, the factor relating to the structure of the polymer, and Cf, the factor relating to the ease of forming conductive chains by the filler.
However, the factor Cf relates to the ease of forming conductive chains of the filler alters greatly.
The main factors that affect the thermal conductivity are incorporated in this model.

Introduction PSN have been widely used in various industrial fields because of their excellent performance, such as air penetrability, mechanical properties, abrasion resistance, mold resistance and hygiene [1, 2].
Mechanical properties were almost invariant.
Studying on feasibility and effect factors of partial hydrophilic finishing using the single factor experiments and orthogonal experiments, the results of study display that hydrophilicity and softness of nonwovens materials are optimal when the concentration of hydrophilic additive is controlled at 1% ~1.5%.
Tab.4 shows the comparison of various properties between the finished and blank sample under the optimum process conditions.
However, the slight decline does not affect the usage in the hygienic

Factors and their levels.
This means that the physical dimensions of the part is affected by the size of the part, which is related to the 'size effect', usually observed pertaining to the mechanical properties of materials.
Lastly, 10 mm3 samples were found to be the most affected samples by the factors: layer thickness and infill density.
Hence, it can be concluded that the physical dimension of the samples is affected by the size related to the so-called 'size effect' which is usually observed when referring to it mechanical properties.
Kumar, “Analysis of the factors affecting the dimensional accuracy of 3D printed products,” Mater.

And then an integrated formulation is applied to consider the concurrent actions of the multi-affecting factors.
Similar or real structural specimens concluding the partial or entire affecting factors [3] are fatigued.
A collective affecting factor or affecting regularity is determined by comparing the test data from similar or real structural specimens to material specimens.
Chemical composition and mechanical properties of this material is given respectively in Tables 1 and 2.
Probabilistic affecting factors for the groove section are estimated and given in Table 5.

(3) 1.2 The establishment of cutting stability figure According to control engineering theory, time domain properties of output about the vibration system depends on the roots’ nature of characteristic equations of the system’s transfer function .
Observed from Fig.d, the whole stability curve move to the right with the increase of the natural frequency ωn .Direction coefficient u is also a basic factor affected by processing process.
Because there are many nonlinear factors in actual processing, amplitude of chatter will not increase indefinitely, but will continue in a particular amplitude. 4 Example calculation about limit cutting width of regenerative chatter system Considering of the complexity of formula in the second quarter, use another mathematical way to calculate the limit cutting width in here.
Kinematics differential equation has been established, cutting system stability has been discussed, stability figure has been drew, and the factors affecting the stability of chatter has been explored.
Advanced manufacturing technology and its development trend[J].Journal of mechanical engineering .2003,10(39) [4] Qiangxing Zhang, Sainsbury M G.