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Online since: August 2013
Authors: Jong Deok Kim
If the die roll height of the power transfer part is large, a structural defect can occur due to a reduction of the power transfer surface.
c b a c b a Fig. 2 Fine blanked samples from the 1st experiment (a: No. 2830, b: No. 2845, c: No. 2860) Fig. 3 Fine blanked samples from the 2nd experiment (a: No. 2330, b: No. 2345, c: No. 2360) b a c Fig. 4 Fine blanked samples from the 3rd experiment (a: No. 1830, b: No. 1845, c: No. 1860) The die roll heights on the corner shape of the fine blanked parts were measured with an optical measurement inspection system (Data Star 200) and Table 5 shows the measured data.
The measured data of the die roll heights on the corner shapes of the fine blanked parts were analysed.
Table 5 Measured data of the die roll heights on the corner shapes of a fine blanked part Corner shape V-ring distance [mm] 2.8 2.3 1.8 Angle [º] Radius [mm] Die chamfer angle [º] Die chamfer angle [º] Die chamfer angle [º] 30 45 60 30 45 60 30 45 60 30 0.5 1.210 1.292 1.325 1.151 1.250 1.257 1.123 1.156 1.169 1.0 0.962 1.037 1.131 0.928 0.938 0.954 0.901 0.902 0.912 1.5 0.787 0.798 0.892 0.735 0.745 0.748 0.711 0.716 0.722 2.0 0.634 0.661 0.673 0.632 0.651 0.657 0.625 0.633 0.637 45 0.5 1.155 1.248 1.276 1.131 1.158 1.162 1.108 1.139 1.152 1.0 0.948 0.975 1.069 0.911 0.935 0.949 0.894 0.896 0.905 1.5 0.778 0.784 0.885 0.708 0.731 0.746 0.705 0.712 0.722 2.0 0.629 0.647 0.673 0.621 0.639 0.651 0.618 0.628 0.629 60 0.5 0.945 1.059 1.066 0.922 0.954 0.961 0.903 0.932 0.940 1.0 0.869 0.936 0.955 0.862 0.882 0.889 0.815 0.837 0.856 1.5 0.731 0.765 0.780 0.698 0.718 0.739 0.687 0.705 0.714 2.0
Online since: November 2013
Authors: J.A. Bhalodia, Savan R. Mankadia
In this communication, we explore the study of crystallographic structure, electronic properties and magneto-resistance arrested by size reduction.
The X-ray diffraction data confirm the orthorhombic structure of all the samples.
The electrical resistivity data were analyzed using various theoretical models and it has been concluded that the electrical resistivity data in the low temperature regime (TOn the other hand, the electrical resistivity data of all the samples of the present investigation at temperatures T > TMI, were fitted to the equation σ = σ0exp (-T0/T)-1/4, where T0 = 16α3/kBN(EF).
Online since: August 2013
Authors: Chang Lin Liao, Xin Wei Liao, Xiao Liang Zhao, Wan Fu Wang, Chang Zhao Chen, Zhen Hua Rui
Introduction CO2 storage is one of the most effective methods to Greenhouse Gas emission reduction.
The Effective Storage Capacity usually changes by the new technology and new data.
It also changes by technology, policy, data and economics change.
Published data for 2000 indicates the Xinjiang Oilfield includes about 17 oilfields covering an aerial extent of about 13 square kilometers.
Rice ,1994, Mathematical Statistics and Data Analysis, 3rd edition.p223-226
Online since: June 2009
Authors: Vu Ngoc Pi, Nguyen Quoc Tuan
As a result, the average of the velocity of the equivalent particle is less than the velocity of abrasive waterjet awjv : loss awjap vvv , (9) Or we can have   , // p a awj awj loss awj v v v v v    (10) where,  is coefficient considering the reduction of the velocity of the equivalent particle and lossv is the loss of particle velocity when the particle penetrates into the workpiece.
As a result, its model can be found by regression method based on the experimental data.
To find the model, 230 data from [3] were used.
The data were done with: Barton garnet #120 and #80 HPX ; 0.229 0.406 orid  (mm); 0.762 1.778 fd  (mm); 5.67 13.23 am  (g/s); 138 276 wp  (MPa) and the workmaterial was Al6061T6.
Therefore, the necessary cutting energy in this case is lower. 1.58 0.71 0 0.25 0.5 0.75 1 1.25 1.5 1.75 Nm=81.9 Nm=213 Machinability number (-) Necessary cutting energy (10^10 J/m^3) Fig.5 Machinability versus necessary cutting energy Fig.6 Experimental and calculated necessary cutting energy By conducting a regression analysis on the experimental data (consisting of 488 individual cutting tests), the necessary cutting energy was determined as follows: 8363.0 11072.1 6728.0 5818.1 7909.0 2674.1 2 13 10 5632.1 m a w f ori f p s fp sa nc NR p p d d d d v v vdd vm e                                       (26) Fig.6 shows the correlation between the experimental and the calculated necessary cutting energy (with R 2=0.98).
Online since: August 2005
Authors: W.J. Clegg, L. Vandeperre
However, for materials with a high ratio of Y to the elastic modulus, E, experimental data show that this is incorrect with the ratio of the hardness to the flow stress decreasing toward 1 as Y / E increases (see Fig. 1a).
The reduction in volume that needs to be accommodated due to the deformation of the surface can be incorporated in the same manner as used by Johnson [5] where this volume is allowed to escape from the plastic zone into the cavity, which modifies the relation between the rate of growth of the cavity and the speed of material displaced by plastic flow.
To allow data to be collected with the optical profilometer from the entire indent in the Fe - Ni invar alloy, its depth needed to be reduced, and therefore the indents in Invar were smaller than those in the polymers, with a nominal depth of penetration by the indenter under load about 40 µm instead of 100 µm.
Therefore in calculating the ratio of yield strength to modulus, Y / E, the yield strength at 8% strain was taken, and as shown in Figure 1, our data agrees well with data obtained by Marsh and the finite element predictions.
Online since: May 2010
Authors: Zhan Jie Wang, Wen Chen, Hai Long Wang
In conclusion, for improving the real-time capability of heartbeat detection and ensuring the reliability of cluster, the reduction in heartbeat packet delays is a severe problem to address.
The hard real-time communication protocol TTEP (Time-Triggered Ethernet Protocol) ensures real-time heartbeat data transmission, thereby eliminating the effect of network congestion on data transmission.
TTEP schedules these packets as real-time data to ensure the packets transmission meets the time constrains.
Slave 1 and Slave 2 transmit data strictly at the time specified by the Master, avoiding collisions, therefore effectively reducing the rate of heartbeat detection misjudgment.
Online since: August 2020
Authors: Santosh Kumar Tamang, Nabam Teyi, Rinchin Tashi Tsumkhapa
After generating the data base, the responses were calculated and were compared with the experimental values.
This is due to the fact that increase in cutting velocity reduces the frictional force, resulting in reduction in force.
The effect of input parameters on cutting forces were examined using a set of experimental data.
A comparison was made between the simulated data and experimental data for the cutting forces.
Online since: January 2013
Authors: E.Ö. Sveinbjörnsson, Pétur Gordon Hermannsson, Fredrik Allerstam, Sigtryggur Hauksson
Further trap density reduction may be obtained by oxidation in the presence of sodium (sodium enhanced oxidation, SEO), enabling the fabrication of MOSFETs with record-high channel mobilities [6].
Curve 2 shows the CV data after the sample was stressed at -40 V for 10 min under ultraviolet (UV) light at 300 K.
Curve 3 shows the CV data after the sodium had been returned to the SiO2/SiC interface by bias stressing the sample at 40 V for 40 minutes at 300 K followed by cooling to 200 K with the bias on.
High frequency CV data (1 MHz) for a SEO MOS capacitor.
This is determined from TDRC data that is recorded between 50 K and 200 K.
Online since: April 2014
Authors: Wei Li, Zhen Huang, Zi Sheng Zang, Xiao Chu Wang
Introduction With the rapid development of the automotive industry, the number of waste tires increased dramatically,so the processing of waste tires and other rubber products become an important problem for the sustainable development and environmental management.Admixing rubber into cement concrete,and it improves the toughness of concrete,noise and vibration reduction and shock resistance.Studies have shown that mixing rubber will lead to rapid decrease of concrete’s compressive,tensile and flexural strength [1].With the mixing of rubber, the compressive strength of concrete decreased, therefore, the rubber modified concrete has been put on the agenda.
Research on performance of concrete According to different superseded quantity of volume,we separate experiment into 5 group,0%,5%,10%,15% and 20%.separate every group into 2 small group according to rubber granule A and rubber powder B,every small group have 3 test pieces.Datum concrete which is not blended latex and rubber;non-modified rubber concrete which is blended rubber but latex;latex modified rubber concrete which is blended rubber but also latex.make sure datum concrete achieve aim strength,test compressive strength, splitting tensile strength, flexural strength of datum concrete,non-modified rubber concrete and latex modified rubber concrete,compare with each other,find out in what condition that raise and fall of concrete’s performance and the proportion of tensile strength and compressive strength,then search for regular pattern further.
The Basic Mechanical Performance Analysis According Table 1:compressive,tensile and flexural strength of concrete would decrease because of rubber blending,and more the rubber blended,more strength of concrete would decreased,latex is propitious to heighten compressive strength,splitting tensile strength and flexural strength of Concrete.In the condition of no rubber blending,modified datum concrete have enhancement in compressive,tensile and flexural strength relative to datum concrete at 28 days,the amplification are 14.1%,15.6% and 21.0% respectively.Due to the latex can improve the surface effect of rubber particles,and the bonding strength between rubber and cement would increase.In the condition of 20%B rubber content,the amplification of concrete’s compressive and tensile strength is maximum at 28 days,about 13.4% and 21.8%,,and in the condition of 20%A rubber content,the amplification of flexural strength is maximum at 28 days,about 25.5%,the concrete which had been modified by
MRC-B 57.63 5.29 8.35 NRC-A 10 49.61 10.3 4.49 15.1 6.83 21.4 MRC-A 54.74 5.17 8.29 NRC-B 46.92 10.5 4.31 14.8 6.52 23.9 MRC-B 51.83 4.95 8.08 NRC-A 15 46.45 7.4 4.29 14.7 6.57 21.2 MRC-A 49.88 4.92 7.96 NRC-B 43.07 10.4 4.03 17.9 6.22 24.9 MRC-B 47.53 4.75 7.77 NRC-A 20 40.79 12.3 3.88 20.9 6.05 25.5 MRC-A 45.81 4.69 7.59 NRC-B 39.02 13.4 3.76 21.8 5.92 24.5 MRC-B 44.25 4.58 7.37 The Performance of Tension and Compression Ratio The tension and compression ratio is a specific value of compressive strength and splitting tensile strength, The performance of tension and compression ratio is the prime symbol for the brittleness of concrete,The higher the concrete strength, the smaller the tension and compression ratio, the greater the brittleness, the smaller the toughness.The rate of splitting tensile strength growth is lower than the compressive strength growth,the performance of tension and compression ratio is the key to improve the toughness of concrete.A lot of literature and research data
Fig.1 The tension and compression ratio As shown in Figure 1:Adding rubber can improve the tension and compression ratio of concrete,And the tension and compression ratio of rubber powder is obviously better than the performance of rubber particles;Under the condition of not adding rubber,the tension and compression ratio of latex modified concrete has improved,compare with the datum concrete,but the elevated effect is not obvious;With the rubber mixing, tension and compression ratio of latex rubber concrete has increased,compared with the unmodified rubber,the more rubber content,the more elevated effect obvious,the rubber particles under the condition of A dosage of 20%,the tension and compression ratio of latex modified rubber concrete increased by 7.6%.Latex as surface modification agent of rubber, help to enhance compressive,tensile and flexural strength of concrete,and help to improve the tension and compression ratio of the concrete at the same time,to ensure the toughness
Online since: September 2011
Authors: Suwannee Panomsuk, Praneet Opanasopit, Theerasak Rojanarata, Tanasait Ngawhirunpat
However, very few data for the development of nanofiber mat of capsaicin is available in the literature.
The amount of drug originally present in the as-spun PVA mats and the as-cast PVA films was then back-calculated from the obtained data against a predetermined calibration curve.
These data were carefully calculated to determine the cumulative released of CC from CC-loaded PVA fiber mats and films Statistical analysis All results were expressed as mean + S.D.
Data were analyzed by one-way ANOVA followed by LSD post hoc test.
An increase in the CC content in the polymer matrix provided a reduction of the relative amount of polymer as a diffusion barrier, which resulted in increased CC release.
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