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Online since: August 2014
Authors: Luis D. Decanini, Luigi Sorrentino, Omar Al Shawa
Using data from an experimental campaign on free-rocking walls, estimation are suggested for the coefficient of restitution in both two-sided (façade resting on a foundation) and one-sided (façade adjacent to transverse walls) rocking.
Coefficient of restitution Studying two-sided rocking (2s), Housner [14] finds an analytic velocity reduction factor, also called coefficient of restitution ean, 2s, using the approach of the conservation of angular momentum.
During each test only displacements are measured, because the accelerations undergo a sudden reduction of velocity upon impact.
Online since: September 2013
Authors: Chao Ren, Kai Ge Chang, Cai Hong Li, Jing Bao
The data which collected by front PC transports into acquisition processors and Blue Monitor gathers data from there through E-Interface.
First of all, it has to determine whether the data collected by E-Interface is charge data or not.
If it is charge data, the system then pushes the data into the next stage to determine whether it meets the rules.
If the data does not meet the rules or the data is not charge or discharge data, it will be pushed into alarm verification module.
We analyze the data and summarize the parameters from the data to build rules table and alarm table.
Online since: April 2014
Authors: Yan Feng Li, Meng Zhao, Hui Chen Wang, Wen Yu Pan
It is helpful to energy saving, environmental protection, reduction of construction cost, and would become an important platform for planning and construction of green village buildings.
BIM technology is a data model based on 3D digital technology, that integrates kinds of information related to the buildings.
BIM can provide reliable reference simulated data by using its analysis software with analysis of meteorological parameters and solar radiation analysis to help determine the solar panels area, installation location, etc.
Online since: August 2018
Authors: Chang Fei Hu, Chun Qing Zhang, Wei Cheng, Bing Wang, Wen Fei Wang
In this paper, we put the emphasis on the synthesis and properties characterization of this new type material, and try to provide a new method to fabricate a viscoelastic damping material(VDM)with tunable Tg and excellent dynamic mechanical properties usable for applications in the field of vibration reduction industry.
Data were recorded in the temperature range −100 to +100 °C at a heating rate of 10 °C per minute.
The Tg of the SSBR can be tuned according to the particular application requirements from about -60°C to 10°C according to the data of DMA.
Online since: December 2010
Authors: Long Chen, Ming Qiu, Z.L. Gao, S.J. Yao
In the high frequency of 4.8Hz, the reduction ranges of the friction coefficient is not obvious with the contact pressure increased, but the effect of contact pressure on the wear of the spherical plain bearing is great.
By using a friction torque sensor with 0.1 Nm measuring precision, the parts of friction torque can be directly measured and recorded by the data acquisition software.
After the test, these specific data were analyzed, based on the curves of the friction coefficient and linear wear changes with load and frequency increased, the rule of macroscopical variation was found. (2)By using SEM and EDS analyzer, the friction surface micro-analysis was gained.
Online since: July 2011
Authors: John A. Taylor, Lisa Sweet, Malcolm J. Couper, Mark A. Easton
On the basis of the cracking data (Table 2, Figure 2) the effect of Cu is minimal, if any.
Cast house based data analysis To corroborate the observations made on the hot tearing rig with data from a cast house environment, cracking scrap data for a range of 6060 and 6063 alloys from one VDC station was analysed.
The data analysed consisted of more than 2000 casts over an 11 month period (’05-’06).
Data includes over 2000 soft alloy casts from one casting station over an 11 month period (’05-’06).
Data includes over 2000 soft alloy casts from one casting station over an 11 month period (’05-’06).
Online since: August 2011
Authors: Xue Feng An, Li Yan, Hai Chao Cui, Xiao Su Yi
Such damages, especially delamination, can cause significant reductions in the compressive strength of laminates and influence the reliability of structures.
A drop weight tester which owned the function of real-time collecting data [10] was used in this study for conducting impact tests.
This delamination process was accompanied by a rapid reduction of the force to the rest value Fr (point B) due to reduction in the transverse stiffness of the laminate.
Online since: January 2012
Authors: Zeng Zhong Wang, Yu Xin Zhang
An important issue in case of risk analysis of highway networks in urban areas with high built-up density is the reduction of traffic flow or the blockage of roads due to debris of collapsed bridges and consequently the prevention of rescue and restoration activities.
Post-disaster recovery activities include consideration of the long-term issues, such as restoration of the transportation network to its original level of functionality and reduction of the socioeconomic impact due to damage to the system.
Based on the damage assessment of bridges and the traffic data, it is possible to estimate the serviceability of the network for a certain seismic scenario and to develop efficient emergency response and recovery planning.
The estimation of direct losses is usually based on the repair or replacement cost of the damaged element while indirect losses is closely connected with reduction of production and other economic and social impacts.
Online since: October 2010
Authors: Mariano Paganelli, Daniele Paganelli
One of the major concerns in the design of sintering bodies is the reduction in volume during the heat treatment.
It is well known that the reduction in volume during the heat treatment is a linearly dependent upon the degree of densification of the green body.
Also the second action is well known, but it has the drawback that in most cases the reduction in fired bulk density means also high porosity and lower mechanical strength.
This is due not to computational limitations, but because the input data needed for such simulations are lacking for most materials at the high temperatures required for sintering [5].
Online since: December 2012
Authors: Rustam Kaibyshev, Anna Mogucheva, Diana Tagirova
Next, this alloy was hot rolled in the temperature interval 380-320oC with a total reduction of ~70%.
Increasing temperature or decreasing strain rate leads to a reduction in the strain-hardening coefficient and a shift of the peak stress to a higher strain.
Increasing strain rate leads to a reduction in ductility at these temperatures (Fig. 2(b,c)).
At 250oC, no decrease in elongation-to-failure with decreasing strain rate was found due to the fact that experimental data at < 2.8´10-3 s-1 were omitted from the present work.
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