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Online since: March 2014
Authors: Masaaki Nakano, Cui Ping Liu, Zi Hai Shi
The stress ratio of the test was -1, and the S-N data were obtained by employing two torsional fatigue testing machines for crosschecking.
In order to facilitate quick crack propagation in a test specimen to reduce the total testing time of the experiment, the stress amplitude for the detailed incremental load-cycle tests was chosen as 140 MPa (τy = 143 MPa based on the von Mises yield criterion), and the Nf of the two S-N data at this stress amplitude were 8.8×104 and 1.0×105, respectively.
The appropriateness of using the present crack grading method for classification of multistage strength degradation was shown by the limited scatter of the individual data from the strength average in each group.
With the constant stress amplitude of τa = 140 MPa, the strength of the specimens experienced a complete variation of grades, i.e., from A to E, even though the grade E test data were mainly composed of test specimens with smaller stress amplitudes of 120 to 130 MPa and in a much higher cyclic loading range.
Due to the lack of sufficient test data, especially regarding the advanced crack grades of C, D and E, further discussion on strain energy variation is not realistic at this stage of study.
Online since: July 2017
Authors: Cena Dimova, Zlatanovska Katerina, Julija Zarkova-Atanasova
Tooth reduction may range from 0.5 mm to 1 mm.
This preparation design includes bigger reduction of the hard tooth substance, which is irreversible.
However, there is very little data in the literature about these types of veneers, except for Lumineers by Cerinate which has more data in the literature.
Veneer preparations using a clear stint reduction guide.
Measurement of enamel thickness in relation to reduction for etched laminate veneers.
Online since: December 2022
Authors: Georges El Achkar, Mahmoud Khaled, Ehsan Jari, Farouk Hachem, Khaireldin Faraj, Rani Taher, Jalal Faraj
H111 Heat Transfer Service Unit and Data Logger PCM (Paraffin wax).
The energy reduction (Figure 13) is a standard for saving money and reducing pollution due to the non-renewable energy sources.
The reduction percentage decreases as the difference between heat rate transfer of the two models is diminished.
The value of energy consumption reduction is also considered elevated at 44.1% after 33 minutes.
Application of Phase Change Material in Buildings: Field Data vs.
Online since: March 2008
Authors: Guang Chao Han, Ming Sun, Hai Ou Zhang, Gui Lan Wang
Automation can introduce cost reduction minimizing production times on such manual finishing operations.
Automation can introduce cost reduction minimizing production times on such manual finishing operations, which mostly includes the methods of industrial robot and NC machine.
Marquez et al. [3] developed an automatic planning and programming system based on data from a CAD system for a robotic polishing cell for mold manufacturing.
So an automatic robotic path planning method based on CAD/CAM datum is developed in this paper.
In the commercial CAD/CAM software system, such as UG NX, the multi-axis (max 5 axis) NC milling programs can usually be generated according to the CAD datum.
Online since: November 2011
Authors: Li Li Gao, Qing Xuan Bo, Li Kun Wang, Lin Zhang, Zhi Lei Ma
To solve the hard problem that the reduction of heat transfer efficiency on the cooling stave of blast furnace due to fouling deposition, solid particles have been added into the cooling water pipes, forming liquid-solid two-phase flow, which can change the heat transfer and anti-fouling capacities of the cooling water pipes.
Schematic diagram of experimental apparatus system is showed in Figure 1. 1 cooling fluid collection tank; 2 cooling fluid outlet; 3 cooling pipe; 4 casing pipe; 5 steam inlet; 6; thermocouples; 7 data collection equipment; 8 computer; 9 funnel; 10 valve; 11 rotor flow meter; 12 valve; 13 circulating water pump; 14 filtration net; 15 tank for CaCO3 fluid; 16 mixing equipment; 17 cooling water system; 18 filtration tank; 19 filtration net Fig 1 Schematic of diagram of experimental device system Experimental component size: The water pipe is φ34×2×1000mm the seamless steel pipe, the casing pipe is φ48×3×1000mm seamless steel pipe.
When experiment state is stable, the data is collected by the computer automatically.
On the one hand, the particle near pipe wall can slip in advance, which can strengthen the shearing effect on fouling surface and make the fouling thickness reduction.
Online since: August 2022
Authors: Viktoriya Pasternak, Artem Ruban, Nataliia Huliieva
To do this, it is necessary to solve a whole complex of differential equations with boundary conditions and initial data.
Basic parameters of the powder filling process Hopper type Hopper size H×D, [pixel)] Angle, [α°] Particle diameter, [pixel] Porosity [%)] Average coordination number * Cylinder 500×500 10 18 21,1 0,34 *– average data from 10 ÷ 20 backfills.
The obtained calculated data are presented in Table 2.
That is, to get data on the average number of contacts (connections) of particles with neighbouring components.
Studying the physical-chemical transformations at resourcesaving reduction melting of chromenickelcontaining metallurgical waste.
Online since: May 2012
Authors: Albert A. Burk, Michael J. O'Loughlin, John W. Palmour, Eugene Deyneka, Yuri Khlebnikov, Lara Garrett, Denis Tsvetkov, Paul Towner, Jeff Seaman, Dan Barnhardt
Therefore, to obtain more statistically significant wafer-to-wafer and run-to-run data, additional runs were performed in the same reactor in a 10x100-mm configuration.
Inspection of the temperature data indicates that the 6 wafers are ~30°C cooler than the susceptor due to the gas levitation and rotation of the wafers.
Fig. 8 Histogram, box plot and statistical data for the projected 5x5-mm die yield (by Candela analysis) for over three hundred 100-mm diameter epitaxial wafers with an average yield of 89%.
Fig. 7: Histogram, box plot and statistical data for the thickness uniformity (7 mm edge exclusion) for over three hundred 100-mm diameter epitaxial wafers with an average uniformity of 1% s/mean.
This, albeit very limited data, suggests that in the future there may also be a role for multi-150-mm diameter epitaxial materials in 10kV-class SiC power-electronic devices.
Online since: April 2014
Authors: Xiao Song Tang, Ying Ren Zheng, Jian Ping Xin
Real-time data are measured after each imposing.
After the data become stable, next grade of load is imposed till failure. ⑤ Measure system Concrete would crack due to its low strength and the strain gauge would lose efficacy immediately, so only the strain of reinforced bar is measured.
Data acquisition instrument is applied to collect strain data.
The above data show that the displacement of yield point with piles is almost the double of that without piles and the displacement of the failure moment increases for 7 times.
[16] Wang Xianmin, and Niu Ruiqing, “Landslide susceptibility analysis based on data field”, Journal of Software, v.6, n.1, 2011, pp.108-115.
Online since: September 2014
Authors: Fa Lin Wang, Meng Qiang Ke, Gui Ji Tang, Yu Ling He
Finally, the calculation is verified via comparing with the experimental data in the published papers.
The calculation proposed in this paper accords well with the experimental data obtained by other researchers.
Research on the stator core vibration makes sense to optimum the structural design of the noise reduction and vibration isolation system of large turbo-generator.
The parameter identification methods for the natural frequencies and the damping ratio, especially the mode identification technology based on the least squares method, are given under the free response data [5].
Table 4 Comparison of elliptical mode frequency tested value 212.4 Hz Result of this paper 209.5 Hz Relative error 1.4% It can be seen from Table 4 that (1) The first elliptical mode frequency is away from the excitation frequency of 100Hz, (2) The calculated first elliptical mode frequency proposed in this paper accords well with the experimental data.
Online since: June 2014
Authors: Nurul Muthmainnah Mohd Noor, Shahrul Na'im Sidek, Salmiah Ahmad
The EOG is a technique to acquire the eye movement data from a person, i.e tetraplegia, which the data obtained, can be used as a main communication tool.
The EOG data is then sent to MATLAB/SIMULINK to recognize the direction of eye movements.
The eye movement input data was used to determine the desired (input) distance for wheelchair motion control.
By taking the difference between the sensor measurement and the desired input of the eye movement data, the error is fed into the FLC for compensation and error reduction scheme.
The experiments were conducted based on the eye movement input data.
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