Search results

Especially, when dealing with uncertain influences e.g. by complex structure or a non-laboratory environment, these methods are often “able to characterize the underlying dependency of the identified features on the unobserved” factors [5].
For monitoring of single sensors the use of the Electro-Mechanical Impedance (EMI) is suggested e.g. by Park et al. [7].
Approaches discussed in the literature are the nonlinear factor analysis [10] or the local principal component analysis [11].
As features, physical properties as well as other significant parameters extracted from the recorded data, e.g.
Kullaa, Nonlinear Factor Analysis in Structural Health Monitoring to Remove Environmental Effects, Proc. 6nd Intl.

In recent years, due to the discovery that bisphenol A (BPA) is released in the process of aging degradation of PC, the application of PC has been negatively affected.
These internal defects then led to a decline in the mechanical property.
It is important to study the influence of processing temperature on the release of BPA contained in food contact material, which will help us understand the process under different temperatures, establish the relationship between the migration of BPA environmental hormone and thermal environment of PC, improve the aging property of materials, control thermal environment of food contact materials, and ensure food safety.
Fig. 1 FTIR spectra of PC at different temperatures Table 1 Influence of molding temperature on Ra Sample Temperature (°C) BPA Content ×102 1 200 7.8 2 230 9.2 The data in Table 1 indicate that heat is an important factor to promote the aging of polymers.
The result further verifies that the sample preparation temperature can affect the thermal stability of PC, accelerate its aging degradation, and generate other species, including BPA.

The Grain refinement effect is effective for improving mechanical properties of FSW joints, but the stability of refined grain structure is not always made clear.
These zone are called thermo-mechanically affected zone (TMAZ).
Thus role of shoulder seems to be important in the instability of microstructure, since the shoulder-contacted region should have affected by the frictional stress longer time than the pin.
X and circle mean the absence and appearance of abnormal grain growth, respectively. 550 ������� 500 ™™™™™™™� 450 ™ 400 � 350 ™� 300 ™ 250 2000 1800 1600 1400 1200 1000800600400300 550 ������� 500 ™™™™™™™� 450 ™ 400 � 350 ™� 300 ™ 250 2000 1800 1600 1400 1200 1000800600400300 Rotation speed (rpm) Annealing Temperature (�) WS:100mm/min, Annealing time:103s deformation of 20%, a residual stress caused by FSW may be a key factor for the abnormal grain growth in the friction stirred zone of the alloy.

Compared with the traditional crystal materials, bulk glassy alloys (BGA) as a new class of materials have extraordinarily distinct advantages in magnetic, chemical and mechanical properties due to the lack of long-range order in their atomic arrangement[3].
They showed that the amorphous phase in the coating contributed to surface hardening and improved tribological properties.
Elemental powder blends with nominal atomic percentage compositions of Zr55Al10Ni5Cu30 premixed evenly by a ball mill in an Argon-gas atmosphere for 5 h was chosen as clad materials due to its well-known glass forming ability as well as its outstanding properties [12].
It is believed that the relatively strong corrosion properties of sample A is related to the presence of excellent corrosion-resistance of amorphous phase, which has a high amorphous phase content at the surface produced by the last laser remelting process.
Li, W.S Wang, et al, Wear and corrosion properties of laser cladded Cu47Ti34Zr11Ni8/SiC amorphous composite coatings on AZ91D magnesium alloy, Trans.

This does not affect the maximum strength reached during stable sliding but it does cause the AFC to commence sliding in a less intense subsequent excitation.
They are a standard component in many mechanical engineering applications to maintain installed bolt tension.
Hence, the load amplifying factor (or the displacement decreasing factor) is (1071/478)=2.24.
Using BeSs reduces the sensitivity of the AFC bolts to the factors of the bolt tension loss, meaning that the post sliding bolt tension variability between bolts in a given AFC incorporating the BeSs will be much less than the variability in an AFC with no BeS.
Dynamic analysis of a complete multi-storey seismic resisting MDOF building allowing for the consideration of positively influential self-centering factors such as column continuity and column base, beam, diaphragm, and AFC bolts flexibilities is being carried out.

It can be seen that the meff enhancement in a narrow-fin NW device with WFin=20 nm at low Ns exceeds factor of 2; in particular, at Ns=1´1012 cm-2, it is ´2.1 (Fig. 3(c)), and it tends to vanish at high Ns.
In a planar (wide) device, this meff improvement is revealed above VFB (i.e., in accumulation region) and reaches a factor of 1.2, whereas in narrow NW devices, it is observed at both above and slightly below VFB (Fig. 3(a)) and reaches a higher factor.
However, we think that screening effect also affect the meff behavior in narrow NWs in the bulk conduction region.
The obtained results lead to the conclusion that factors which improve the electrostatic gate control and suppress short-channel effects (namely, the multi-gate structure and thinness of the silicon body) also suppress the impurity Coulomb scattering, and thereby improve the Coulomb-limited mobility in SOI MOSFETs with high doping concentration.
These findings are important in terms of physical understanding of transport properties of heavily-doped multi-gate SOI MOSFETs, and are of particular importance for modeling and performance evaluation of junctionless NW MOSFETs, because mobility degradation due to high doping was considered to be one of the most important limitations of these devices.

Main Design Parameters The main design parameters of the system are as follows: the utilization factor of the sintering machine is 1.25t/m2.h; the production capacity of single sintering machine is 60t/h; the air volume of single blower is 510000Nm3/h (there is the only blower in each cooling section) and the rate of air leakage is 35%; the amount of effective recycling flue gas is 330000Nm3/h in first section and second section respectively; the temperature of recycling flue gas is 380℃ through the first section and 250℃ through the second section; installed capacity of generators is 2×12000kW; years elapsed time is 7128h/y; annual energy output is 171072000Kw.h; the ratio of self electricity consumption is 20.7%; the selling electric quantity is 135660000Kw.h; The generating capacity of the sinter per ton is 16Kw.h; the selling electric quantity of sinter per ton is 12.68Kw.h; the flue gas is not circular.
By (1) and (2), to improve the utilization rate of the energy, i.e. to increase the energy grade Af, and to produce more electricity without affecting the main process and product quality, besides improving η by the traditional way, the sintering process must be paid attention to for the full use of chemical energy grade of the raw material, that is, to increase Br.
In the ORC cycle, those main properties of organic working medium (such as pentane) which involve low boiling point, condensing pressure close to or slightly greater than the atmospheric pressure, low temperature resistance, low rotate speed and low working pressure can be utilized so as to optimize the waste heat.
References [1] JIN Hongguang, ZHANG Guoqiang, GAO Lin, LIN Rumou: JOURNAL OF MECHANICAL ENGINEERING.

Prajapati1 Independent Researcher, Fatehpur, Uttar Pradesh, 212664, India 1Deepak K Prajapati is presently doing his Post-Doc from the Department of Mechanical Engineering, IIT, Delhi, India Email: deepak2019iitp@gmail.com Keywords: surface topography; correlation length; asperity radius; contact pressure; real area of contact Abstract.
Introduction Friction and wear are extrinsic properties of systems which are governed by asperity interactions.
During pure sliding or rolling /sliding motion, friction changes abruptly, however, it is also true that friction and wear are significantly affected by initial surface topography.
Later on, in Sec. 3 it is demonstrated that how different correlation lengths of measured rough surfaces affect the surface topography during wear.
This happens due to dependency of real area of contact on another factor which is asperity deformation.

Moreover, from Metallo-thermo-mechanical theory, simulation using the coupled analysis by finite element method is carried out, and the residual stress is predicted.
As the factor, the measurement of d0 lattice spacing, young modulus E, poisson ratio ν in the distortionlessness condition is mentioned [2]. d0, E and ν intermingle in the material which was conducted the heat treatment, since it is different by material component and organization, and not uniform.
And, simulation using coupled analysis by finite element method is carried out from metallo-thermo-mechanical theory.
Physical property Measurement position Young's modular E (GPa) Poisson's ratio νννν Gear tooth top(Carbonizing 0.8wt% Oil quenching) 213.4 0.235 Gear tooth inside(Normal) 247.0 0.251 Residual stress measurement.
It is proven that the change of shape greatly affects residual stress like this.

Key physical properties of Erythritol and Therminol55 are summarized in Table 3.
Thermo-physical properties of selected PCM and HTF at different operating temperatures. [33-35,38,39].
Physical properties of these materials are summarized in table 6.
Physical properties of carbon steel, FRP and rockwool. [43,44] Material Thermal conductivity (W/m.
Kaizawa, A Kawai, H Kamano, T Jozuka, T Senda, T Akiyama, Thermophysical and heat transfer properties of phase change material candidate for waste heat transportation system.