Search results

Adhesion of chips on tool can be related to the properties of grinding fluid.
Chip adhesion state was investigated after drilling process and it was found that instead of grinding fluid properties, surfactant also has significant effect on chip adhesion on tool by absorbing the adhered chip from the tool.
Moreover, due to the low thermophysical properties of glass, the heat developed during the drilling process has softened the cutting chips as these chips will easily adhere to cutting tool that resulted in tool breakage.
The glass plate was fixed to a mechanical jig by two clamp plates.
The mechanical jig was submerged in fluid.

The basic properties of nanoparticles are listed in Table 1 and the image is shown in Fig. 5, that the radius of the PH SiO2 is bigger and tends to aggerate compared to the SiO2 which is smaller and dispersed well.
Properties of nanoparticles.
Considering these two factors, the optimum foam stability in the surfactant-nanoparticles system should not be measured by solely particle’s adsorption energy, instead, the foam stability is highly affected by the optimum concentration of the surfactant and nanoparticles, as shown Fig. 13 and Fig. 14.
Journal of Mechanical Engineering and Sciences. 2021 Jun 10;15(2):7993–8002
Effect of surfactant tail length and ionic strength on the interfacial properties of nanoparticle-surfactant complexes.

China, 100081 2 Beijing Key Laboratory: Measurement and Control of Mechanical and Electrical System, Beijing Information Science and Technology University, Beijing, P.
These defects will not only lower the safety operating reliability of welded structure and cause the early damage on welded structure, but also cause material losses of the state properties and the life of the people, so it is an urgent issue for us to adopt effective measures to conduct monitoring and diagnosis on the weld defect of low-alloy high-strength steel.
In spite of a lot of experiments and researches on the identification technology of AE signal source [6-9], we have not yet come to a uniformed and accepted criterion for signal features are affected by the factors of experimental conditions, material traits and external environment.
Numerous mechanical frictions and plastic deformations will arise in the course.
The work extracting signal waveform of typical mechanical friction noise is done as shown in Fig 6.

The most highly stressed slip systems and Schmid factors in the two circled regions (A) and (B) in Figure 2.
Solid vectors come out of page, dotted vectors go into page. 224 stressed slip systems are identified along with their Schmid factors, m, with the highest values circled.
These slip systems in the other two grains have smaller Schmid factors.
The crystallographic plane that best aligns with this ledge is the (001) plane, and the Schmid factors for [1-10] and [100] slip are above 0.53-0.67 in these grains, with similar kinds of inward and outward preference as described above.
Recent studies show that developing networks of high angle CSL boundaries is beneficial for enhanced ambient temperature properties [13,14].

Crystal structure analysis of the Mg2Si1-xSnx system having potential thermoelectric properties at high temperature D.
In the last decades, efforts have been devoted to improve their TE properties [1-5].
This concerns members of the Laves type compounds, besides known for remarkable physical properties or electronic origin, e.g. superconducting properties [7].
Also, it was reported that alloying Mg2Si with Sn or Ge drastically affects the TE properties.
Sb, can lead to better TE properties.

In order to do so, the parameterised simulation model (see [15]) was adjusted to the electrical and mechanical properties of the low-scaled electromagnet.
The temperature is considered, since increased temperature has a negative impact on electrical isolation and mechanical stability.
Further the material properties were determined with the tensile test according to DIN EN ISO 6892 and the hydraulic bulge test according ISO 16808 [22].
The cutting station’s cutting gap will be affected by the horizontal ram displacement occurring while coining the gearing elements.
The mechanical integration into a forming machine was explained.

This is applied to those cases where the mechanical properties and the crack geometry in the component are known, but the Weibull parameter m is unknown.
These properties are explained in terms of 1) the effect of YR on the stress field near the crack tip and 2) a volumetric effect of m on the Weibull stress [4, 8].
The strength mismatch and welding residual stress in welds may affect the equivalent CTOD ratio, β.
It was assumed that the heat-affected zone (HAZ) had the same strength as the BM or 10% higher strength.
The stress field in the HAZ for the FL crack was affected by the strength mismatch: elevated by the strength overmatch but relaxed by the strength undermatch of the WM.

Hourly Simulation Study of Intermittent Operating Conditions for Ground Heat Exchanger in the Hot Summer and Warm Winter Areas Yingning Hu1,a, Na Kong2,b,Shanshan Hu3,c 1,2,3College of Mechanical Engineering, Guangxi University, Nanning 530004, China ahyn@gxu.edu.cn, b632721603@qq.com , cchloee_2000@163.com Keywords: Hourly simulation; Ground heat exchanger; Outlet temperature;Ground temperature rise at well bore Abstract.
The interface mainly set parameters are Water Loop Properties, Soil Thermal Properties & History,Grout,Fluid Properties , GHX Type, Spacing, Borehole Diameter,Depth.
The specific settings of the simulation as shown in Fig.2 The heat transfer process of the ground heat exchanger is complex,which affected by many factors,such as pipe,the initial soil temperature, ground thermal conductivity, groundwater seepage.
In order to reduce the amount of computation and simplify model, making the following assumptions mainly: (1) Thermophysical properties of soil around the buried pipe uniform; (2) Not take the impact of rainfall into account； (3) Think the ground with the soil, backfill material good contact； (4)Think that all drilling depth is the same； (5)Think that the two branch pipes in the drilling distributed symmetrically with respect to the drill axis.
Simulation study of influence factors of the ground heat exchanger Outlet temperature and ground temperature rise at well bore described in the following diagram are numerical value after the system running one year, all outlet temperature is the outlet temperature of the ground heat exchanger.

At the same time, the requirements for (co)polymer filling materials were defined, and the techniques and equipment for the systematic study of the physical and mechanical properties of these materials were developed [12].
To improve the properties of this type of material, they tried to introduce various inorganic fillers into their composition.
It was established that esterification of epoxy resins with methacrylic acid yields a product capable of copolymerizing with monomers, including methyl methacrylate, forming a copolymer with excellent physical and mechanical properties.
It should be noted that the properties of materials depend on the composition, size, and shape of the filler.
In this regard, given that the polymer matrix is ​​the basis of filling materials and toothpaste, according to Moiseeva N.S. (2020), the impact on it can lead to a change in their microstructure and an improvement in physical and mechanical properties [6].

The properties of these joints are insufficient [5].
In this paper the properties of a new developed arc brazing filler based on the ternary system Al-Ag-Cu are investigated.
Parizi, Comparison of microstructure and mechanical properties of A356 aluminium alloy/Al2O3 composites fabricated by stir and compo-casting processes, Mat. a.
Lee, Contact Angle and Wetting Properties, Springer-Verlag, Berlin Heidelberg, 2013
Raabe, Influence of intermetallic phases and Kirkendall-porosity on the mechanical properties of joints between steel and aluminium alloys, Mat.