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Online since: August 2004
Authors: R. Bruce Thompson
Major Events that have Shaped the Field of Quantitative Nondestructive Evaluation Title of Publication (to be inserted by the publisher) Building and Maturing the Science Base The 1970's and 1980's were a period of creating and maturing the scientific knowledge needed to allow the more quantitative interpretation of NDE data.
• Air Force o Provide data, from which information can be extracted regarding the status of systems � area health monitor � real-time sensing of performance o Increase use of models for interpretation o Form multidisciplinary teams to attack complex problems • Navy o Systems operate in a very aggressive environment o Costs of inspection are escalating (8 maintenance hours for each flight hour on one particular aircraft) o Need automated, wide area, and in-place sensors • NASA o Assess structural integrity in difficult to access regions of the orbiter o Reduce incidence of crew loss in Reusable Launch Vehicles � integrated vehicle health monitoring (requires new algorithms to relate output to integrity) o Develop Robust Aerospace Vehicles � sense damage and take corrective action to heal It is clear that embedded sensors and structural health monitoring will be the topic of an increased research and development effort in the future, a primary motivation
being the reduction of time and cost associated with maintaining aging systems.
Work in health monitoring must address a number of important questions such as the development of new sensors, the assurance of their reliability, the development of algorithms to interpret data and make accept-reject decisions, and the determination of the optimum balance between local and global measurements.
Online since: October 2011
Authors: Qiang Xia, Jian Min Wang, Yan Li, Hong Xia Wang, Yun Long Yao, Hong Jing Zhou, Guang Yu Liu
Coenzyme Q10 is a lipid soluble antioxidant constituted a tyrosine-derived quinone loop linked to a polyisoprenoid side chain, composed of a unique species of compounds that undergoes reversible oxidation and reduction function of the electron-transport path way [2, 3].
In the present paper, all data were presented with mean values ± standard deviation (SD) for three to six samples.
The data analysis was subjected to the statistical software Origin 8.0.
The size data of CoQ10-NLC was detected by PCS.
Online since: August 2015
Authors: Jakkree Srinonchat, Chaidiaw Thiangtham
This data base has seven difference emotion speeches for speak emotion speech and record with sampling frequency of 16 kHz, 16 bit, mono audio file in wav format.
First data base consist about 800 utterances and after screened pass about 500 utterances.
These results are selected from all of speech emotion data which containts more than 460 speechs.
Vaseghi, Advanced signal processing and digital noise reduction, Wiley&sons, 2012.
Online since: May 2012
Authors: Tong Qian Zhao, Chun Yan Xiao, Li Heng Jiao, Kun Feng Zhang, Ning Zhu
Sample analysis and data processing Plates count was adopted when detecting the microbial quantity.
(O=Simpson index; Pi=quantity of all species divide quantity of species i).In this study, Excel and SPSS 19 was used for data processing.
After restoration the trend of quantity reduction with depths was much clearer.
Comparing data before and after, we find that all kinds of microbes have a significant rise.
Online since: May 2011
Authors: Fang Fang Liao, Wei Wang, Yi Yi Chen
Experimental Study to Calibrate Monotonic Micromechanics-Based Fracture Models of Q345 Steel Fangfang Liao2, a, Wei Wang1, 2, b and Yiyi Chen1, 2, c 1State Key Laboratory for Disaster Reduction in Civil Engineering, Shanghai 200092, China 2Department of Structural Engineering, Tongji University, Shanghai 200092, China afangfang1983hn@163.com, bweiwang@tongji.edu.cn, cyiyichen@tongji.edu.cn Keywords: Fracture; Micromechanical model; Monotonic loading; Parameter calibration.
Fig. 6 gives the comparison of finite element analyses and test data for force elongation curves for all the three geometries for base metal.
(4) (a) Specimen 4-1 (b) Specimen 10-1 (c) Specimen 16-1 Fig. 6 Comparison of FEA and test data for force elongation curves It can be seen from Table 2 that the larger the specimen notch radius, the larger the critical equivalent plastic strain and the smaller the triaxiality.
Results of the 9 uniaxial tensile tests of round bars provide stress-strain data, elastic modulus, strength and ductility of the three materials.
Online since: May 2011
Authors: Luo Fang Guo, Hong Li, Jia Feng, Zi Quan Li, Wen Chen Song, Yong Qing Li
The data of diameters and mass of experimental limestone particles, which are similar to that of limestone particles with diameter size of 20-40 mm charged in steelmaking process, are shown in Table 1.
No.1 No.2 No.3 No.4 No.5 No.6 Fig.2 Weight loss rate (WLR) of samples varying with time The data of experiments are also fitted by cubic polynomial, which is shown as the following formula:, whereis WLR of limestone samples; is heating time; A, B, C and D are cubic, quadratic, linear and constant term coefficient respectively.
The decomposition rates of six spherical limestone particles, which are arranged in descending size order, can be obtained by substituting the data of Table 1 and Table 4 into formula (1).
Qu, “Discussion on Limestone Addition Instead of Lime for Energy-Saving and Emission reduction in BOF Steelmaking”, China Metallurgy (2010), P. 59-62 (In Chinese) [4] H.
Online since: April 2021
Authors: Darminto Darminto, Abdullah Shahab, Indra Sidharta, Nur Hidayat Romadhon, Rakhasoni Firman Syah, Rayhan Kurnia Hafiyanda
The material boasts promising physical properties that can be used in data storage application, microwave absorption application, electric motor and machining process [2–4].
FoM result for refinement of Fe3O4 sample using MAUD Sample Data File Sig (GoF) Rwp (%) Rwpnb (%) Rb (%) Rexp (%) Fe3O4 CIF-9009769 1.1343141 4.8146296 81.09027 3.8050613 4.2445297 Table 2.
Refinement output of Fe3O4 sample analysis obtained by MAUD Sample Data File Space Grup %Wt Lattice Parameter (Å) Crystal Size (nm) Fe3O4 CIF-9009769 F d -3 m 100 8.3367 23.7 Gas nitriding process utilized NH3 gas was done at 500 °C, 600 °C and 700 °C.
Du, Magnetic Properties and Thermal Stability of γ′-Fe4N Nanoparticles Prepared by a Combined Method of Reduction and Nitriding, J.
Online since: September 2013
Authors: Hong Xia Cao, Qing Zhen Feng, Bian Ling Liu, Ying Tao
The test about Real urban landscape water shows total phosphorus is 0.35 mg·L-1 , when the additive quantity of modified fly ash is 200 mg·L-1, the concentration of the water reduce to the level of 0.01 mg·L-1 ,which is up to the first class of landscape water quality standard (GB18921-2002) Introduction Phosphorus is one of the main pollutants in urban sewage, it is also an important cause which contributes to the eutrophication [1], the data shows that the ecological balance of the water environment will be damaged [2] when the total phosphorus concentration reach the degree of 0.02 mg / L in the water.As the solid waste discharged from coal-fired power plants, metallurgy, chemical industry and so on , Fly ash has a wide range of sources of raw materials with low prices,it is the largest emission of industrial solid waste [3] in China .
From the test data in table 1 , it is known that the indicators of potassium permanganate and total phosphorus are far above the class C standard of landscape water .
From the test data in figure 2 , it is known that when the speed is lower, adsorbent is not enough to dispersed in the water evenly , and correspondingly it is lower that the average contact opportunities of the active points on the unit area and phosphorus, so the adsorption effect is poorer, when the rotating speed is 150 r/min or above , the phosphorus removal efficiency does not change substantially.
(3)Applying modified fly ash to wastewater treatment, especially for the removal of phosphorus in wastewater has a broad prospect, especially we promote circular economy, energy conservation and emissions reduction today, the form of using waste to treat waste will certainly be one of the important ways of phosphorus wastewater treatment.
Online since: July 2014
Authors: Bin Wang, Wei Wang, Shan Zhang, Yan Li
Establishment and reduction of unified differential equation Assuming the distribution coefficient of vehicle mass is 1 and the vehicle has the same road roughness function on four tires, thus the system can be simplified as a 1/4 vehicle model with 3DOF, as shown in Fig.1.
By the contrast it can be determined that the curves simulated in Matlab and Adams have the same shape and data points, which proves that both the simulation results are correct.
PSD of Vertical Acceleration in MAD Comparing the data in Table 2 and 3, we can find the error of the RMS of vertical acceleration in Matlab and Adams is considerably small.
Through the data form Table 2 and Table 3 ,it can be found that compared with the vehicles using wheel hub motor, the Motor Integrated Modular plays a certain role in reducing the vertical vibration and increasing ride comfort, but the effect is not obvious.
Online since: July 2010
Authors: Wei Zhang, Yi Ping Qiu, Ying Chen Zhang, Hong Yan Wu
In conclusion, reduction peaks in 1724, 1170 cm-1 after O2-plasma treated related to active group which is intense in O2-plasma treat carbon nanotube coating basalt fiber surface, the peak for carbon nanotube damaged or removed. 1180 and 908 cm-1 peak for -Si-O-C- stretching demonstrate that carbon nanotube or other group graft on surface of basalt fiber by the O2-plasma treated.
It shows that nano-phase will enhance the strain rate sensitivity for the neat Basalt, and helium and oxygen plasma treated make the data of the strain rate sensitivity is negative.
The activation volumes of the neat Basalt and the plasma treated Basalt calculated using the yield strength data.
Nanophase will enhance the strain rate sensitivity for the neat Basalt, and O2 plasma treated make the data of the strain rate sensitivity is negative.
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