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Online since: October 2006
Authors: Han Sur Bang, Sung Min Joo, Hee Seon Bang
In addition, the procedure of data transferring between
commercial package and in-house solver for the preparation of input data for in-house solver has been
developed.
Data transfer: Commercial FE package and in-house solver.
The block diagram for this data transferring between the in�house solver and commercial packages is shown in Fig.1.
Local numerical tensile test model in ANSYS is prepared by numerically cutting (extracting) both geometric and residual stress data from the global 3-dimensional model after finishing thermal elastic -plastic analysis.
But the purpose of this study is to prepare and develop the procedure of simulating dissimilar welded model and transferring the residual stress data from the in-house solver to commercial package as initial value for further analysis.
Data transfer: Commercial FE package and in-house solver.
The block diagram for this data transferring between the in�house solver and commercial packages is shown in Fig.1.
Local numerical tensile test model in ANSYS is prepared by numerically cutting (extracting) both geometric and residual stress data from the global 3-dimensional model after finishing thermal elastic -plastic analysis.
But the purpose of this study is to prepare and develop the procedure of simulating dissimilar welded model and transferring the residual stress data from the in-house solver to commercial package as initial value for further analysis.
Online since: December 2011
Authors: Dmitri A. Molodov, Günter Gottstein, Ya Ping Lu
The obtained experimental data were evaluated in terms of the JMAK model.
Experimental procedure A hot rolled sheet of an Fe alloy containing 23.2% Mn and 0.57%C was cold rolled at room temperature to 50% reduction using laboratory rolling mill.
As seen in Table 1, the calculated Avrami exponents are much closer to experimental data than the theoretical value of 3.
Experimental procedure A hot rolled sheet of an Fe alloy containing 23.2% Mn and 0.57%C was cold rolled at room temperature to 50% reduction using laboratory rolling mill.
As seen in Table 1, the calculated Avrami exponents are much closer to experimental data than the theoretical value of 3.
Online since: March 2015
Authors: Janka Majerníková, Emil Spišák, Ján Slota
Simulation has been realized on two models with analysis of resulting data.
Simulation has been verified on two proposed models with subsequent analysis of resulting data.
Even if the height of draw piece “B” is by 40 mm bigger, difference in reduction of thickness in critical areas between both models is insignificant.
Simulation has been verified on two proposed models with subsequent analysis of resulting data.
Even if the height of draw piece “B” is by 40 mm bigger, difference in reduction of thickness in critical areas between both models is insignificant.
Online since: August 2014
Authors: Yu Shan Xu, Meng Xiao Wang, Dong Xi Shi, Xue Jiao Zhang, Qiang Sun
Based on a roadway project of Dongqu Colliery of Xishan Coal and Electricity Group,using the geological exploration data and on-site research and referring to the theory and engineering experience, the tunnel grouting program for marl was worked out and it was revised the program in the construction.
According to the drilling data, the sedimentary cycle in general the formation is brecciated limestone, marl and brecciated limestone.
(2)In order to facilitate the infiltration of the grout in the crack path, advanced and reasonablely arrangement of reduction of artesian water is available
According to the drilling data, the sedimentary cycle in general the formation is brecciated limestone, marl and brecciated limestone.
(2)In order to facilitate the infiltration of the grout in the crack path, advanced and reasonablely arrangement of reduction of artesian water is available
Online since: January 2014
Authors: Yan Huang, Shao Hong Peng, Sha Liang, Jian Li, Mei Yu
Therefore, it is very important to develop the recycling technology of vehivle dismantling waste for the harmless, stability, reduction and resource utilization of vehivle dismantling waste.
The composition characteristics of vehicle dismantling wastes from artificial disintegration and mechanical shredder are studied in this paper, which can provide reliable data for a recycling utilization of vehicle dismantling waste.
The data is near to reports by Roy C et al[15] and Chaala A. et al[16].
The composition characteristics of vehicle dismantling wastes from artificial disintegration and mechanical shredder are studied in this paper, which can provide reliable data for a recycling utilization of vehicle dismantling waste.
The data is near to reports by Roy C et al[15] and Chaala A. et al[16].
Online since: July 2014
Authors: T.V.V.L.N. Rao, Turnad Lenggo Ginta, M.Ariff Zaky, M.Hariz M. Noor, Y.Y. Zhun, K. Ganesan, Subhash Kamal, M.Zamri Ismail, A.M. Abdul-Rani
RE non-contact data acquisition device, 3D laser scanner will be used to obtain cloud data of the existing worn drill bit.
The scanner is connected to a data acquisition system capable of monitoring, storing and processing the acquired data.
Evaluating Captured Data.
Converting Cloud Data to 3D CAD model.
Analysis Settings Data.
The scanner is connected to a data acquisition system capable of monitoring, storing and processing the acquired data.
Evaluating Captured Data.
Converting Cloud Data to 3D CAD model.
Analysis Settings Data.
Online since: August 2012
Authors: Ai Fang Liu, Shu Rong Guo
Currently, energy saving and consumption reduction has been a crucial task the domestic people are facing with.
In this paper, we classified new wall material and thermal insulation material, analyzed the performance, feature and application of such materials, selected typical foam concrete and slurry insulation material and analyzed their thermal properties and technology parameters and so on, to present the development trend and direction of energy saving building material, to provide valid scientific data to relevant building energy saving management units, design units and construction units, to play a positive guiding role in improving the application level of new energy saving building material and promoting new energy saving building material of high quality.
In use, slurry insulation material should pay attention to the following test data, apparent density, bonding strength, thermal conductivity, volume shrinkage, softening coefficient, water absorption, fireproof performance, content of asbestos and so on.
In this paper, we classified new wall material and thermal insulation material, analyzed the performance, feature and application of such materials, selected typical foam concrete and slurry insulation material and analyzed their thermal properties and technology parameters and so on, to present the development trend and direction of energy saving building material, to provide valid scientific data to relevant building energy saving management units, design units and construction units, to play a positive guiding role in improving the application level of new energy saving building material and promoting new energy saving building material of high quality.
In use, slurry insulation material should pay attention to the following test data, apparent density, bonding strength, thermal conductivity, volume shrinkage, softening coefficient, water absorption, fireproof performance, content of asbestos and so on.
Online since: September 2013
Authors: Norberto Roveri, Isidoro Giorgio Lesci, Leonardo Ciocca, Barbara Dozza, Enrico Lucarelli, Sergio Squarzoni, Davide Donati
Non-seeded scaffolds and tissue culture wells were analyzed similarly as negative control and blank control, respectively, to calculate the percentage reduction of alamarBlue.
After seeding (1h) the number of cells not adhering to the scaffold was less than 15% for both scaffolds (data not shown).
Scale bar = 100 mm The percentage reduction of alamarBlue depending on cell growth increases from 40% (1 day after seeding) to 63% (7 days after seeding) without demonstrate significant difference with cells growth on tissue culture plate (Fig. 6).
Reduction of AlamarBlue by human mesenchymal stem cells 1 day and 7 days after seeding “mono-phasic” and “bi-phasic” scaffold.
After seeding (1h) the number of cells not adhering to the scaffold was less than 15% for both scaffolds (data not shown).
Scale bar = 100 mm The percentage reduction of alamarBlue depending on cell growth increases from 40% (1 day after seeding) to 63% (7 days after seeding) without demonstrate significant difference with cells growth on tissue culture plate (Fig. 6).
Reduction of AlamarBlue by human mesenchymal stem cells 1 day and 7 days after seeding “mono-phasic” and “bi-phasic” scaffold.
Online since: September 2013
Authors: Bing Yan, Da Wei Dong, Xiao Xie, Yu Hua Sun, Yuan Wen Wang
In 1970, Mellin and Sovran studied the non-uniform distribution method in the reduction of blade discrete noise for axial flow compressor, and the formulae of calculating the discrete noise of non-equally spaced blades were deducted [5].
From these data, it can be concluded that the non-equally spaced distribution of blades is an effective way of diminishing rotation noise, however there is a lack of a targeted, simple and practical way for the optimization of blade distribution angles.
Reduction of compressor noise radiation.
Noise reduction by applying modulation pronciples, J.
From these data, it can be concluded that the non-equally spaced distribution of blades is an effective way of diminishing rotation noise, however there is a lack of a targeted, simple and practical way for the optimization of blade distribution angles.
Reduction of compressor noise radiation.
Noise reduction by applying modulation pronciples, J.
Online since: August 2013
Authors: Dong Li, Sun Chuan
Especially since the middle period of the 20th century, with the leap development for science and technology and rapid growth of economy in the world, the footmark that human being conquers natural has been spread through the most parts of the earth , and therefore human being has been a crucial force that dominates global ecosystem . the article ,named human being dominates the global ecosystem republished by well-know science magazine “Science” in 1997, listed a group of data (see Table 1)to show that activities of human being have been changing the global ecosystem . in the short decades after World War II , the issues about environment and energy have developed into worldwide ones that concerns courtiers in the world rapidly from the regional ones
Table 1 Ecosystem of the Earth
Transformation of continent landmark
45%
Percent of Man-made carbon dioxide
21%
freshwater volume available for development
52%
Man-made nitrogen fixation
56%
Introduction of plant species
20%
(2)If there are problems of construction quality for building watertight engineering, the moisture will enter into the layer of warm-keeping and energy conservation, resulting in the reduction of warm-keeping function; as the relatively efficient material of warm-keeping is usually new-style composite material, which not only calls for water proofing but also ventilation, or it will be mouldy with the joint impact of water and air, and cause the inefficiency of the warm-keeping performance.
The places that area prepared for embedded parts and pipelines in advance should be built by solid bricks in the holes of the walls, which should be reserved and embedded in advance and not be bored and stuffed with cement mortar at random during construction. 3.1.3 The construction of heat conservation for energy-saving walls The construction of heat preservation for wall is the key segment for the measures of its energy conservation. the wall layer of heat preservation is usually set inside and outside the wall , although the former just calls for simple technological measures , its effect of heat preservation is not as good as the latter ; while the latter can save utilization area , but the issues like cracking , water perocolation , peeling off , the reduction of duration will show on if the improper measures are done , and its cost are higher than that of the former .the construction technologies ,such as plastering, spray application, dry-hang , sticking and composite and so
In order to prevent the cracking resulted from large-scale expansion with heat and contraction with cold of roof, the elastic leak should be built according to the feature of heat preservation layer, and it also can be taken into account with holes of ventilation and air exhaustion (2)The weatherproofing and dampproofing of heat preservation layer should be gave top priority to prevent the bump and cracking of waterproof layer that caused by reduction of isolating heat due to moisture and vapor.
(2)If there are problems of construction quality for building watertight engineering, the moisture will enter into the layer of warm-keeping and energy conservation, resulting in the reduction of warm-keeping function; as the relatively efficient material of warm-keeping is usually new-style composite material, which not only calls for water proofing but also ventilation, or it will be mouldy with the joint impact of water and air, and cause the inefficiency of the warm-keeping performance.
The places that area prepared for embedded parts and pipelines in advance should be built by solid bricks in the holes of the walls, which should be reserved and embedded in advance and not be bored and stuffed with cement mortar at random during construction. 3.1.3 The construction of heat conservation for energy-saving walls The construction of heat preservation for wall is the key segment for the measures of its energy conservation. the wall layer of heat preservation is usually set inside and outside the wall , although the former just calls for simple technological measures , its effect of heat preservation is not as good as the latter ; while the latter can save utilization area , but the issues like cracking , water perocolation , peeling off , the reduction of duration will show on if the improper measures are done , and its cost are higher than that of the former .the construction technologies ,such as plastering, spray application, dry-hang , sticking and composite and so
In order to prevent the cracking resulted from large-scale expansion with heat and contraction with cold of roof, the elastic leak should be built according to the feature of heat preservation layer, and it also can be taken into account with holes of ventilation and air exhaustion (2)The weatherproofing and dampproofing of heat preservation layer should be gave top priority to prevent the bump and cracking of waterproof layer that caused by reduction of isolating heat due to moisture and vapor.