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Stiffness reduction of woven CFRP and CFRTP spring under ultra high cyclic fatigue for vibration conveyor Takahiko Yoshi 1, Kazuya Okubo 2, and Toru Fujii3 1-3 1-3, Tatara-miyakodani, Kyotanabe, Kyoto, Japan, 1 dtj0381@mail4.doshisha.ac.jp, 2 kokubo@mail.doshisha.ac.jp, 3 tfujii@mail.doshisha.ac.jp Key words: CFRP, CFRTP, ultra high cyclic fatigue, high humidity, stiffness reduction Abstract.
However few studies investigated the fatigue behavior of CFRP under ultra high cyclic fatigue loading at high humidity condition, while same data was shown by researchers [5].
Result and Discussion Stiffness reduction of CFRP spring under ultra high cyclic fatigue Fig. 3 shows the reduction rate of frequency as a function of number of loading cycles in the CFRP spring.
Stiffness reduction of CFRTP spring without loading To prevent the stiffness reduction accompanying with such damages which might be induced by the hydrolysis in epoxy shown in Fig. 5(a) under high humidity condition, PET film was utilized as the material of matrix for the CFRTP spring plate.
Prevention of stiffness reduction of plate spring Fig. 7 shows the reduction rate of frequency as a function of number of loading cycles in CFRTP spring.

To optimize the reduction technology of SSI and its removal ability for nitrate from wastewater, the influence of reduction time of SSI on nitrate removal percentage was investigated.
Because the specific surface area was impact smartly by the reduction time of SSI, it was suggested that nitrate removal ability of SSI should declined with the increasing of reduction time once the reduction time longer than the optimized reduction time.
But the higher specific area was also impacted by deoxidizer, reduction temperature and reduction time, etc.
lnr=ln(-dC/dt)=lnkobs+nlnC (5) Fig.2 The relationship between lnr and lnC According to the kinetic experiment datum shown in Fig. 1, reaction rate equations of nitrate removal by SSI reduced in different reduction time could be calculated and illustrated in Table 1.
SSI reduction could not be optimized merely on the basement of its removal ability for nitrate, other factors should be taken into account, such as reduction atmosphere, temperature, reduction time, etc.

Modeling of test stand of feed drive system for CNC machine tool by FEM The test stand was composed of ball screw( ball bearing spindle, ball screw nut, fixed bearing, floating bearing) made by Company Boschrexroth according to DIN 69051, Teil 1, shaft coupling and roll rail guide made by company KTR, three-phase current servomotor 1FT made by company Siemens, which has a group of planet gears with ratio 10, showed as following figure. 1, and the technical data is shown by table.1 as following: This construction of test stand has the advantage that the moment of the servo motor can be transferred thought coupling direct into the screw .
Thus, structure preserving model reduction is considered.
The reduction’s effectiveness and reliability depends on the size of.
The comparison of model reduction methods in FEM simulation The model reduction methods, which include Reduced Method, Subspace Method, Block Lanczos Method, etc, are often applied in FEM simulation.
Those model reduction methods are applied for the transmission system for CNC machine as fig.1.

Citation & Copyright (to be inserted by the publisher ) Data Processing in Condition Monitoring Intelligent Modeling L.N.
Rough Set (RS) theory that is a data processing tool of depicting incompleteness and uncertainty had been brought forward for developing automation rule generation system based on indiscernibility relation and knowledge reduction method by Pawlak Z [4-5].
Training Sample Data Set Reduction.
Constructing new learning sample set based on minimum condition attribute and original data; 8.
For adopting ANN to train the learning samples, data of failing to report can be dealt with. 3.

In 2009, the total CO2 emission from China was 7710.5 million tons (Mt) [[] International data carbon dioxide emission; U.S.
The uncertainty of reduction rate for the ratio of peak–flat difference is 0.5%, 1.0% and 1.5%, respectively, when the uncertainty of statistical data is 10%, 20% and 30%.
The uncertainty of reduction rate for the ratio of peak–valley difference is 0.5%, 1.0% and 1.6%, respectively, when the uncertainty of statistical data is 10%, 20% and 30%.
The uncertainty of reduction rate is 0.01%, 0.01% and 0.02%, respectively, when the uncertainty of statistical data is 10%, 20% and 30%.
The uncertainty is 0.002%, 0.004% and 0.006%, respectively, when the uncertainty of statistical data is 10%, 20% and 30%.

The input data for the pilot model were; 12 teeth with module of 5, face width 50 mm, pitch diameter of 60 mm and outside diameter of 70 mm.
The stress obtained was 127.7 MPa which is about 18.7 % reduction in Von Mises stress.
A maximum of 25% reduction in maximum Von Mises stress was obtained in this analysis.
The stress obtained for this case was 108.2 MPa which yielded a 31.1 % reduction compared to the pilot case.
Brown, Gear Stress Reduction Using Internal Stress Relief Features, Journal of Mechanical Design 119 (1997) 518-521

The research studies the influence of soft reduction of a slab on the inner structure of a billet.
Soft reduction of the slabs was carried out in the 12 and 13 segments of the secondary cooling zone.
Change in the content of phosphorus and niobium in thickness of slabs cast with soft reduction () and without reduction (): the position of the upper freeze line (------) at the time of the start (1) and the end (2) of the soft reduction application The figure shows two vertical dotted lines characterizing the position of the upper freeze line inside the work piece at the beginning and the end of the soft reduction.
These data were obtained by calculation using the dependence of the square root.
Data on the maximum value of zonal chemical inhomogeneity degree of tube metal impurities, cast with soft reduction , and without external impact These data allow concluding that the maximum value of the degree of zonal inhomogeneity of most impurities is higher in the cobbled metal than in the metal without external influence.

In the smelting reduction stage, the reaction temperature was set at 1550℃.
The composition of (Cr2O3) and reduction rate of Chromium are shown in Table 3 and Table 4.
This means after 34 min’s reduction, all of the Nickel had been recovered into iron-bath, and the reduction rate is nearly 100%.
The data confirmed all of the dephosphorizer got the advantageous effect on the dephosphorization process.
[3] Bauer K H: Recycling of iron and steel works wastes using the Inmetco direct reduction process [J].

The result showed that the coexistence of Cu(Ⅱ) and citric acid was favourable to the photocatalytic oxidation and reduction.
Table 2 Percentage content of major Cu(Ⅱ) species Sample Cu2+ CuL CuHL CuH2L Cu(OH)L Cu2+ 100 - - - - Cu2+-Cit 18.71 - - 81.21 - 3.Results and Discussion 3.1 Changes of the suspension pH Table 3 contains data on the suspension pH after experiment.
The reduction reaction kinetics is thus found to follow the zero order with respect to Cu(Ⅱ) concentration.
(b) Cu(Ⅱ) was more feasible in photocatalytic reduction in the presence of citric acid.
Fig.1 Cu(Ⅱ) photocatalytic reduction (molar ratio of Cu(Ⅱ) : citric acid was 1:1). 3.3.

The rate of reduction scales with the reaction time for both RT and 50 ℃ as evidenced from electrical conductivity data.
Therefore, the metals such as Fe, Al and Zn with dilute hydrochloric acid have been used for the reduction of GO because of their high reduction potential values.
Tin powders (100 mesh, 99.5%, Alfa Aesar, USA) were used as reducing agent for GO reduction.
However, this peak becomes broader with increasing the duration GO reduction at 50 °C.
FT-IR and XPS analysis confirms the successful reduction of GO using Tin powder.