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Online since: January 2014
Authors: De Yang Luo, De Huan Tang
All the data can be detected by PLC and displayed on a touchscreen including: positioner’s current status, running programme, warnings and modifications.
In the revolution mechanism design of positioner, two AC servo motors were used to drive helical gears over two high-precision reduction gears( harmonic speed changer with a reduction ratio of 300) separately.
An AC servo motor was used to drive helical gear over a high-precision reduction gear (harmonic speed changer with a reduction ratio of 300).
The mesh between reduction gear and motor was gapless with an amortisseur installed.
In the revolution mechanism design of positioner, two AC servo motors were used to drive helical gears over two high-precision reduction gears( harmonic speed changer with a reduction ratio of 300) separately.
An AC servo motor was used to drive helical gear over a high-precision reduction gear (harmonic speed changer with a reduction ratio of 300).
The mesh between reduction gear and motor was gapless with an amortisseur installed.
Online since: December 2013
Authors: Lucjan Pająk, Kazimierz J. Ducki, Lilianna Wojtynek
The biggest reduction in the austenite lattice constant value was observed in the case of a short ageing time of 0.5 h (Figs. 1-3).
A considerable reduction in the austenite lattice constant at the initial stage of alloy ageing is caused by spinodal decomposition of a supersaturated solid solution [2,3].
The longer ageing time (200 and 500 h) leads to further reduction in the austenite lattice constant.
Extension of the ageing time (200 and 500 h) leads to further reduction in the austenite lattice constant.
Toraya, Whole-powder-pattern fitting without reference to a structural model: application to X-ray powder diffraction data, J.
A considerable reduction in the austenite lattice constant at the initial stage of alloy ageing is caused by spinodal decomposition of a supersaturated solid solution [2,3].
The longer ageing time (200 and 500 h) leads to further reduction in the austenite lattice constant.
Extension of the ageing time (200 and 500 h) leads to further reduction in the austenite lattice constant.
Toraya, Whole-powder-pattern fitting without reference to a structural model: application to X-ray powder diffraction data, J.
Online since: August 2016
Authors: Richard Lin, Nurul Zuhairah Mahmud Zuhudi, Krishnan Jayaraman
The reduction of the peak HRR may be addressed in terms of the contribution of the bamboo.
There was also a significant reduction of mean EHC, mean CO, mean CO2 and mean SEA in the composites compared to the PP.
The variation of the theoretical peak HRR shows a similar pattern to the experimental data obtained.
This char layers leads to a reduction in peak HRR because of the limitation of mass and thermal transfer.
Demand for more natural fibre materials means a reduction in glass use.
There was also a significant reduction of mean EHC, mean CO, mean CO2 and mean SEA in the composites compared to the PP.
The variation of the theoretical peak HRR shows a similar pattern to the experimental data obtained.
This char layers leads to a reduction in peak HRR because of the limitation of mass and thermal transfer.
Demand for more natural fibre materials means a reduction in glass use.
Online since: October 2012
Authors: A. Stephen, G. Rajasudha, V. Narayanan
The XRD data reveals that the intensity of the Fe2O3 has decreased when the concentration of the polymer is increased in the composite.
The complex impedance data for this has been analyzed in different formalisms such as permittivity (e) and electric modulus (M).
Normalized Impedance Spectral Data.
This result indicates that the displacement of ions is thermally activated; these results are found to be comparable with the temperature dependence of the conductivity data.
For the given temperature and frequency, the real part M' and the imaginary part, M" of complex modulus were extracted from impedance data.
The complex impedance data for this has been analyzed in different formalisms such as permittivity (e) and electric modulus (M).
Normalized Impedance Spectral Data.
This result indicates that the displacement of ions is thermally activated; these results are found to be comparable with the temperature dependence of the conductivity data.
For the given temperature and frequency, the real part M' and the imaginary part, M" of complex modulus were extracted from impedance data.
Online since: October 2016
Authors: Andrew P. Hunt, Ping Tan, Horace Billon, Michael F. Ling, Ki Chun Ng
Once the manikin skin temperature and power input had stabilised (±3%), 30 min of baseline data was recorded at 1 min intervals.
The reduction in V50 with the addition of the coating is very likely due to the added mass per unit area of the coated sample leading to a reduction in the efficiency of impact energy transfer away from the impact point.
In this case the net result is a reduction in the V50, although this is not excessive and is within the ±15% margin we have noted from previous testing at this laboratory.
Of course the added weight burden of the added PCM then leads to a significant reduction in ballistic efficiency.
Conclusions The effect of adding the PCM to the SAI led to a marginal reduction in the V50 but, due to the added mass of PCM, to a very significant reduction in ballistic efficiency.
The reduction in V50 with the addition of the coating is very likely due to the added mass per unit area of the coated sample leading to a reduction in the efficiency of impact energy transfer away from the impact point.
In this case the net result is a reduction in the V50, although this is not excessive and is within the ±15% margin we have noted from previous testing at this laboratory.
Of course the added weight burden of the added PCM then leads to a significant reduction in ballistic efficiency.
Conclusions The effect of adding the PCM to the SAI led to a marginal reduction in the V50 but, due to the added mass of PCM, to a very significant reduction in ballistic efficiency.
Online since: December 2006
Authors: Takehiko Takahashi, Ikuo Shohji, Susumu Hioki, Osamu Kamiya
The fatigue life was defined as the number of cycles corresponding
to 30% reduction of maximum stress amplitude.
In this case, the fatigue life estimated from 30% stress reduction at R.T., 80 and 120o C was 5371, 4511 and 1171 cycles for Sn-3.5Ag, and 5981, 1141 and 381 cycles for Sn0.7Cu, respectively.
For contrasting the stress reduction, almost 90% of saturation level could coincide a rapid cyclic softening starting cycle, which was almost equal to fatigue life from 30% stress reduction, in Sn-3.5Ag at R.T. and 80o C and in Sn-0.7Cu at R.T.
Figure 6 shows comparing the fatigue lives from 30% stress reduction and surface deformation satiated to 90% at all temperatures.
However, stress reduction at the time of fatigue life from surface deformation was slightly little from the stress level at fatigue life from cyclic softening, due to its gentle long slope of tensile stress.
In this case, the fatigue life estimated from 30% stress reduction at R.T., 80 and 120o C was 5371, 4511 and 1171 cycles for Sn-3.5Ag, and 5981, 1141 and 381 cycles for Sn0.7Cu, respectively.
For contrasting the stress reduction, almost 90% of saturation level could coincide a rapid cyclic softening starting cycle, which was almost equal to fatigue life from 30% stress reduction, in Sn-3.5Ag at R.T. and 80o C and in Sn-0.7Cu at R.T.
Figure 6 shows comparing the fatigue lives from 30% stress reduction and surface deformation satiated to 90% at all temperatures.
However, stress reduction at the time of fatigue life from surface deformation was slightly little from the stress level at fatigue life from cyclic softening, due to its gentle long slope of tensile stress.
Online since: July 2014
Authors: Ning Ning Chen
This theory while maintaining the original decision table without changing the classification ability, through knowledge reduction, value reduction, export classification decision tables and decision rules.
It is a mathematical tools to deal with the information and knowledge use the way of quantitative analysis to process the data of imprecise, inconsistent, incomplete.
Data preprocessing For the attribute set, we can get the importance of the classification for attributes subset, then get the both dependence. is mean we classified the object, to remove some attributes subsetfrom set , then we can get the Influence.Fig 1 shows us the knowledge representation system.
That the weights have different sensitivity on the environmental.In the Rough set theory, attribute importance reflects of the impact on the current data on the environmental attributes decision.
The rough set theory to determine the importance of property is a manifestation the objective existence relative importance (which is objective existence) of large amount of historical data for each attribute.
It is a mathematical tools to deal with the information and knowledge use the way of quantitative analysis to process the data of imprecise, inconsistent, incomplete.
Data preprocessing For the attribute set, we can get the importance of the classification for attributes subset, then get the both dependence. is mean we classified the object, to remove some attributes subsetfrom set , then we can get the Influence.Fig 1 shows us the knowledge representation system.
That the weights have different sensitivity on the environmental.In the Rough set theory, attribute importance reflects of the impact on the current data on the environmental attributes decision.
The rough set theory to determine the importance of property is a manifestation the objective existence relative importance (which is objective existence) of large amount of historical data for each attribute.
Online since: February 2014
Authors: Hao Liang Jiang, Jin Jiang Yan, De Shan Liu
The earthquake emergency rescue work aiming to minimize casualties and property losses caused by the earthquake and maintain social stability plays an important role in earthquake prevention and disaster reduction.
With 2D GIS data model and structural theory and technology mature, further development of graphic theory, database theoretical technology and computer virtual reality technology, and strong promotion of the applicative demand, the emergence and development of 3D GIS have become possible [3].
Considering practicability and diversity of the channels of getting remote sensing data, this paper uses the OpenGL technology as the main implemental platform and develops this system under the C/S mode.
The data of this system can be managed by combining Oracle database and file; the effect analysis of the earthquake emergency rescue action and marking the targets can be realized in 3D system; in order to improve the display performance of the 3D geographic scene, the 3D GIS marking function can be developed by directly applying the OpenGL which is relatively outstanding in this field.
Fig.1 Architecture design Function Design. 3D earthquake marking system function includes basic terrain generation, DEM data consolidation, 3D visualization of sky and sea / river, setting location of sun / lighting, 3D scene map operations, managing 3D model library and adding 3D objects, flight and roaming, saving 3D geographic scene and setting effects of 3D geographic scene.
With 2D GIS data model and structural theory and technology mature, further development of graphic theory, database theoretical technology and computer virtual reality technology, and strong promotion of the applicative demand, the emergence and development of 3D GIS have become possible [3].
Considering practicability and diversity of the channels of getting remote sensing data, this paper uses the OpenGL technology as the main implemental platform and develops this system under the C/S mode.
The data of this system can be managed by combining Oracle database and file; the effect analysis of the earthquake emergency rescue action and marking the targets can be realized in 3D system; in order to improve the display performance of the 3D geographic scene, the 3D GIS marking function can be developed by directly applying the OpenGL which is relatively outstanding in this field.
Fig.1 Architecture design Function Design. 3D earthquake marking system function includes basic terrain generation, DEM data consolidation, 3D visualization of sky and sea / river, setting location of sun / lighting, 3D scene map operations, managing 3D model library and adding 3D objects, flight and roaming, saving 3D geographic scene and setting effects of 3D geographic scene.
Online since: March 2007
Authors: Joung Hwan Lee, Costas Soutis, Chang Duk Kong
(a) (b)
(� : 2mm thick experimental data, � : 3mm thick experimental data, � : 4mm thick experimental data, � : 8mm
thick experimental data)
Fig. 2 (a) Comparison of fiber volume fraction versus specimen thickness (Unidirectional
([04]ns) - T800/924C laminates), (b)Variation of longitudinal compressive strength with initial
fibre waviness for a T800/924C unidirectional laminates��
�
Fiber waviness is a manufacturing defect caused by the manufacturing technique used
such as filament winding, weaving, braiding, etc.
Average failure strengths of the specimens decreased with increasing specimen thickness from 2[mm] to 8[mm] with the T800/924C system (36[%] strength reduction) and specimen volumes from scaling factor 1 to scaling factor 4 with the IM7/8552 system (46[%] strength reduction).
Average failure strengths of the specimens decreased with increasing specimen thickness from 2[mm] to 8[mm] with the T800/924C system (36[%] strength reduction) and specimen volumes from scaling factor 1 to scaling factor 4 with the IM7/8552 system (46[%] strength reduction).
Online since: November 2016
Authors: Jörg Franke, Sven Kreitlein, Michael Scholz
Due to the effects of mass-customization there is an increase of the variance of the products combined with a reduction of the number of units per variation and a volatile costumer demand.
On the one hand side the continuous change of the consumers’ behavior, like mass-customization, lead to an increase of the variants of each product combined with a reduction of the number of units per variation and a reduction of the product life cycle time [1].
The variance of the products will increase combined with a reduction of the amount of units per variant.
Due to the approach that the intralogistics milkrun-system is substituted by an intralogistics taxi, the transportation sequence and the required data for the handling of remaining quantities has to be implemented to the library of the simulation model [3].
The reduction of the delivery lot size reduces the fixed capital at the production lines but increases the amount of needed vehicles.
On the one hand side the continuous change of the consumers’ behavior, like mass-customization, lead to an increase of the variants of each product combined with a reduction of the number of units per variation and a reduction of the product life cycle time [1].
The variance of the products will increase combined with a reduction of the amount of units per variant.
Due to the approach that the intralogistics milkrun-system is substituted by an intralogistics taxi, the transportation sequence and the required data for the handling of remaining quantities has to be implemented to the library of the simulation model [3].
The reduction of the delivery lot size reduces the fixed capital at the production lines but increases the amount of needed vehicles.