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Online since: November 2010
Authors: Mi Zhou, Wan Cheng Yuan, Yue Zhang
Fracture and Damage Mechanism of RC Pile Group Foundation under Low Reversed Cyclic Loading Zhou Mi 1,3 a, Zhang Yue 2,b and Yuan Wancheng 3,c 1 Key Laboratory for Old Bridge Detection and Reinforcement Technology of Ministry of Transportation, Chang'an University,Xi'an 710064, Shaanxi, China 2 School of Construction and Civil Engineering Xi'an University of Science and Technology, Xi'an, China 3 State Key Laboratory for Disaster Reduction in Civil Engineering ,Tongji University , Shanghai 200092, China a 666zhoumi@mail.tongji.edu.cn, b zhangyue7810@163.com, cyuan@mail.tongji.edu.cn Keywords: Damage Mechanism; RC Pile Group; Pseudo-static test Abstract.
The test also provided the data to quantitatively assessment the positive effect of steel protective pipe for RC pile.
Fig.5 Finite element model scheme Fig.6 RC pile and ST pile fiber element sections Park-Ang double parameters damage index considered the effect of maximum deformation and cumulative hysteretic consumption for structural damage and this damage index has a larger number of test data calibration[2,3], so this article introduces modified Park-Ang model to simulate component of mechanical behavior in soften segment.
Online since: November 2016
Authors: Masakazu Okazaki, Yuuki Yonaguni, Satoshi Yamagishi
At first steady state thermo-mechanical fatigue failure behavior was investigated using the round-bar TBC specimens, after getting basic data of mechanical properties of the bond/top coats and the substrate alloy.
The non-steady state TMF cycling promoted the delamination of ceramic top coat, resulting in a significant reduction in fatigue life.
In this paper, steady state thermo-mechanical fatigue failure behavior was investigated using the round-bar TBC specimens, after getting basic data of mechanical properties of the bond/top coats and the substrate alloy.
These data imply that the application of coating to the superalloy substrate was helpful in improving the LCF life via protection from environment attack to substrate.
At first steady state thermo-mechanical fatigue failure behavior was investigated using the round-bar TBC specimens, after getting basic data of mechanical properties of the bond/top coats and the substrate alloy.
Online since: August 2014
Authors: Li Jiang
With the increasingly development of economy in China, economic growth and efficient use of energy is a hot topic in recent years, also China is under pressure of carbon emissions reductions during the process of economic development.
The empirical test on the dynamic relationship between China's energy consumption (coal, oil, natural gas consumption) and economic growth has been studied, which use 1953-2007 annual time-series data [5].
Huo Zongjie, Zhou Caiyun (2010) found the relationship between the structure of energy consumption and energy is causality and analysis on the data with China's economic growth in 1978 -2007, [6].
VAR model built and Analysis Articles selected data from 1978-2012, China's gross domestic product (GDP), the coal consumption (X1), oil, natural gas consumption (X2) and hydropower, nuclear power, wind power consumption (X3), all data sources in the "China statistical Yearbook", the software uses EVIEWS7.2.
When processing the data, GDP in 1978 as the base year to eliminate the impact of price changes, in order to further maintain the stability of data, consider the effects which different variance may exist, namely the logarithm of the four indicators, get LNGDP, LNX1, LNX2 and LNX3.
Online since: November 2015
Authors: Grzegorz Ćwikła, Wacław Banaś, Witold Janik, Krzysztof Kalinowski, Cezary Grabowik
In a result, depth of the cut became important factor in order to prepare technological operation with time reduction.
The proper quality of final product is not only based on proper catting parameters fitting but it also depends on a machine accuracy, vibration reduction [9], thermal stabilization etc.
[3]http://www.quadrantplastics.com/fileadmin/quadrant/documents/QEPP/EU/Product_Data_Sheets_PDF/GEP/Ertalon_6_PLA_PDS_E_25012011.pdf, accessed: 27.03.2015 [4]http://www.quadrantplastics.com/fileadmin/quadrant/documents/QEPP/EU/Product_Data_Sheets_PDF/GEP/Ertalon_LFX_PDS_E_25012011.pdf, accessed: 27.03.2015 [5] http://teppplastics.com/pdf/datasheets/NYLATRONGSM.pdf, accessed: 27.03.2015 [6] http://www.schwartz-plastic.eu/fileadmin/Downloads/Material_data_sheet.pdf, accessed: 27. 03. 2015 [7] A.
Dymarek, Passive Reduction in the Identified Vibrations of the Machine Drive System in the Form of Multistage Gear Units.
Online since: October 2014
Authors: Robert Ziolkowski
Measurements of instantaneous speed, acceleration, deceleration and route tracking data were undertaken to develop the investigation.
Analysing statistics of data received from the police the positive influence of changes in road infrastructure on driver’s behaviour and number of road incidents is visible.
These unexpected data gained for roundabouts pushed to carry out further investigations of drivers’ behaviour within an intersection environment in terms of speed in approaching sections.
The data were collected by utilizing GPS data logger which allowed to monitor and record second-by-second in-field vehicle position and speed along the tested sections.
Some data was removed unwitting speed reduction due to the presence of other road users.
Online since: September 2013
Authors: Zainal Abidin Ahmad, Mazlan Mohamed, Mohd Nor Hakim Hassan, Muhamad Iqbal bin Ahmad, Azman Ahmad Bakir
This equipment is also supplied with software, to ease data retrieving and diagnosis guides.
The authors have gathered and plotted the data for the XY plane measurements at different feed rates.
The data will be recorded and examined according to the methods explained by Y.Kakino, et al.[11] in his book.
For the XY plane, an additional feed rate of 2540m/min was measured for the comparison between manufacturing data and tested data.
Meanwhile at the ZX plane, the data have illustrated a slight reduction in the errors as the feed rates increase.
Online since: April 2011
Authors: Matthias Haase, Alex Amato
The simulation results were validated with measured data of air temperature regimes and different solar radiation in an existing ventilated double-skin façade.
Methodology A detailed window model has been incorporated into the TYPE 56 component using output data from the WINDOW 4.1 program, developed by Lawrence Berkeley Laboratory, USA [1].
Together with the thermal properties of the gas fillings and the conductivity and emissivity of the glazings, the optical data for the window is written to an ASCII file.
Using this interpolated data, the transmission of solar radiation and the total absorption of shortwave radiation for each window pane is calculated.
The simulation results were validated with measured data of air temperature regimes and different solar radiation in an existing ventilated double-skin façade.
Online since: October 2013
Authors: Hong Yuan Huo, Li Sun, Li Sha Song, Chen Jie Cao
Based on the test data, the changes of above basic properties of SFRC are analyzed in view of the effects of the fraction of steel fiber by volume and the thickness of cement paste wrapping steel fibers.
Unfortunately, the design of mix proportion of concrete still relies on the empirical and test data.
The comparisons of test and calculation data are shown in Fig. 7.
Table 5 Statistical results of coefficients αt αtm CF40 CF50 CF60 CF40 CF50 CF60 0.364 0.434 0.366 0.398 0.265 0.215 Fig. 7 Statistical analyses of test data Conclusions The steel fiber reinforced concrete (SFRC) was designed by the binary superposition mix proportion method with three different strength grades, which considered the key parameters such as the fraction of steel fiber by volume, the thickness of cement paste wrapping steel fibers.
Based on the statistical analyses of test data, the effect coefficients of steel fiber on tensile and flexural-tensile strengths of SFRC in the formulas specified in current specification for steel fiber reinforced concrete structures were given out.
Online since: January 2015
Authors: Tong Li, Fan Yang, Xu Sheng Zhuo, Dan Dan Wang
Based on the experiences of technical experts and operation data analysis, an expert rules system with wide coverage range was developed, which composed of the logical relationships between the coal feed flow rate, bed temperature and the primary air flow rate in various operation conditions.
The core of reference governor is an expert system based on the operators’ experiences and the real data analysis.
Control System of Primary Air 2.1 Expert System The expert system is the main framework of reference governor and consists of data acquisition and quantization part, knowledge base part and inference engine part.
ForΔFC, “+”means increase, “-”means reduction.
Knowledge base part: it stores the special knowledge which comes from the operator’s experience and real data analysis to regulate the instruction of primary air fan.
Online since: May 2020
Authors: Yuri V. Dolgachev, Viktor N. Pustovoit, L.P. Aref'eva
Experimental data show that after quenching in a magnetic field, a decrease in the volumetric strain of the transformation, an increase in the dispersity of packets of martensitic crystals and components of the packets are observed.
Introduction The data of [1-6] show that when exposed to a constant magnetic field during steel quenching, the rate of martensitic transformation (especially in the early stages of the reaction) increases up to 1.5 times.
Martensite relief and the corresponding interference pattern, ´500: a - quenching without a field; b - quenching in a magnetic field of 1.6 MA/m The polygons of the distribution of the value of constructed from the data of 250 measurements are shown in Fig. 4.
Here there is a good correlation with the data on the specific surface (Table 1).
Conclusions Thus, the experimental data show that after quenching in a magnetic field, a decrease in the volume strain of the transformation, an increase in the dispersity of the packets of martensitic crystals and the components of the battens, is observed.
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