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Online since: June 2014
Authors: Keiichi Tanaka, Masataka Ohgaki, Hidekazu Suzuki, Masakatsu Hasuda, Syo Matsumura, Masato Yano, Masaru Miyayama
SEM-TES application to chemical state analysis on cation of electrode materials for electrochemical capacitors based on the sensitivity correction of X-ray intensity data.
Recently, we developed the sensitive correct function on the observed X-ray intensity data measured in the system.
The function of automatic sensitivity correction was installed on the system software for correction of the fluctuated X-ray intensity occurring by the temperature fluctuation in the data collection while using the conventional SEM-TES system.
Data analysis has been performed using the corrected X-ray intensity data based on the acquisition data obtained by the correlation of sensitivity (k) and heater power (HP) by using a correction line to show as Fig. 2 conventionally.
As a result, the change of state of the Mn ion with the oxidation-reduction was revealed.
Online since: December 2018
Authors: Pentti Karjalainen, Antti Järvenpää, Matias Jaskari
Some of the annealed CR56 sheets were subsequently cold rolled to 10% or 20% reductions for strengthening them.
A higher reduction and lower Tp resulted in finer grain size.
The CR reduction seemed to have a slight effect on the anisotropy.
The Com-301LN and 690-60-56 structures were cold rolled to 10% and 20% thickness reductions, Table 3.
In Fig. 5, the stress amplitude vs. number of cycles to failure for annealed and cold-rolled Com-301LN and 690-60-56 structures was calculated from the strain-stress-lifetime data.
Online since: November 2011
Authors: Chantima Ekwong, Sageemas Na Wichain, Choochart Haruechaiyasak
The classification rules are extracted by attribute reduction.
The data is classified into two sections.
(3) The unstructured data, particularly strength points and weakness points are classified by using text mining technique and then stored into the data warehouse
This experiment is done to classify strength and weakness points of unstructured data.
Then data were examined and cleaned.
Online since: July 2014
Authors: Ying Li Shao
The traditional exhaust silencers, which are normally constructed by combination of expansion chamber, and perforated pipe or perforated board, are with high exhaust resistance, but poor noise reduction especially for the low-frequency band noise.
But most of the traditional exhaust mufflers are composed of expansion chamber, and perforated pipe or perforated board [2], whose exhaust resistance is rather great and whose function of noise reduction is very poor, especially for the low frequency, which is the major part of exhaust noise [3].
In accordance with the theory of sound radiation, the author can regard the two opposite holes as the two plunger sound source, and due to the reverse oscillation, the radiation capability of the combined sound resource is reduced, so the author can reach the aim of noise reduction.
Fig. 1 Principle of the muffler using reversed-phase cancelling Analysis to the experimental results The theoretical formula for transmission loss of the new type muffler TL= The author designs 3 series of data and name them as Muffler TypeΙ, Muffler TypeⅡ and Muffler TypeⅢ, and their sizes are as the following: Muffler TypeΙ: r=165mm, l=80mm; Muffler TypeⅡ: r=165mm, l=60mm; Muffler TypeⅢ: r=56mm, l=80mm 0 20 40 60 80 100 120 31.5 63 125 250 500 1000 2000 4000 Octave-band /Hz Sound pressure level /dB pipe orig new1 new2 new3 Fig. 2 The contrast on octave-band sound pressure level at 1800r/min 0 20 40 60 80 100 120 31.5 63 125 250 500 1000 2000 4000 Octave-band /Hz Sound pressure level /dB pipe orig new1 new2 new3 Fig. 3 The contrast on octave-band sound pressure level at 2000r/min Fig. 4 The time domain signal of the newⅠat 2000r/min Fig. 5 The spectrum of the newⅠ muffler at 2200r/min Fig. 6 The time domain
This not only proved that the new mufflers have very good performance for low-frequency noise reduction, but also proved that using split-gas rushing can lower the air flow speed thus lowering the air-regeneration noise.
Online since: August 2013
Authors: Pavel A. Akimov, Marina L. Mozgaleva
Due to special algorithms of averaging within multigrid approach, reduction of the problem is provided.
Generally the choice of these domains is a priori data with respect to the structure being modeled.
Averaging and Reduction in Haar Basis.
(14) Let be vectors of corresponding reduced components of vectors in Haar basis, be so-called reduction matrix of size , is the size of vectors ) in interval .
Thus, after reduction and transformation we get ; (21) ; ; ; ; (22) ; ;
Online since: October 2014
Authors: Hai Yun Jin, Qing Wen Duan, Jian Feng Yang, Zhi Hao Jin, Rong Zhen Liu
Among them, carbo-thermal reduction nitridation (CRN) method was widely used [4, 5].
It was due to the existence of residual carbon, which could not be totally removed during the fabrication process and caused the reduction of the bending strength.
The reason of weight loss could be mainly attributed to the carbo-thermal reduction process and the exclusion of liquid phase.
This indicated that iron silicon formed during sintering was excluded out of porous body and caused the weight loss, which was in accordance with the analysis of weight loss data.
SiAlON was formed by carbo-thermal reduction nitridation process.
Online since: December 2013
Authors: Luísa Andréia Gachet-Barbosa, Andressa Fernanda Angelin, Marta Siviero Guilherme Pires, Rosa Cristina Cecche Lintz, Leandro Mouta Trautwein, Lubienska Cristina L.J. Ribeiro
The results showed that the lightweight aggregate concrete with Brazilian expanded clay are extremely suitable for the production of prefabricated elements slender, mainly due to the reduction in density and excellent performance in mechanical properties, especially modulus of elasticity, despite the low toughness of lightweight aggregate.
Some properties, such as density reduction and maintenance of mechanical strength, provide weight reduction itself and loads of foundation, which reflects the reduction of the final cost.
Compared to conventional concrete, the concrete showed a slight reduction in density between 20% and 36%, a fact confirmed by Rossignolo (2009) [2].
From the test of modulus of elasticity, it could be seen that the lightweight concrete produced in this study showed a reduction between 40% and 50%, when compared to values achieved with conventional aggregates for concrete, meeting the expectations according to the CEB/FIP (1977) [4].
These results show that the aggregate is the main factor limiting the performance of the mechanical strength of the concrete, better said, the strongest part of the lightweight concrete is the mortar, thus confirming the data obtained by Rossignolo (2009) [2] and Angelin et al. (2013) [5].
Online since: February 2012
Authors: Min Gong, Yue Wang
The development and popularization of new-style wall materials is currently focus of energy conservation and emission reduction in China.
The study compiled statistics of new-style wall materials application in hangzhou since 1997 to 2005 to provide the guide of development direction for the future.Based on a large amount of statistical data,the study respectively analyzed from the use area, type and use ratio in different building types of new-style wall materials, and summarized the new-style wall material application rules in hangzhou and influence factors.
Under this background, there is an urgent demand for the statistics, sorting and analysis to use of new-style wall materials, to provide the basic data and the guide of development direction for the future popularization work.
Therefore, the use ratio of new-style wall materials is higher, resulting data distortion.
So the study selected the data with relatively stable project quantity in 1997 ~ 2005 to analysize(fig.1).
Online since: September 2004
Authors: R. Fernie, Nick Warrior
Load and strain data were recorded by a piezo-electric load cell and electrical resistance strain gauges and were logged at a minimum sample rate of 40 kHz.
This arrangement allowed the load cell to be pre-tensioned and placed close to the sample - these features contributed to the reduction of noise in the retrieved data (see [9]).
Load data were measured by the machine 100kN load cell.
Strain data were acquired at a sample rate of 1 Hz.
However, the 0°/±60 data did not follow this trend, and the reasons for this are not clear - no change in failure mode could be seen and further work is required in this area.
Online since: December 2014
Authors: Naděžda Klabusayová
Waste reduction and increase in the efficiency of manufacturing processes is a long-term, systematic matter, which requires the utilization of appropriate methods and methodologies.
Therefore, this papers points out the growing importance of utilizing certain methods and principles which lead to the reduction of inefficient costs.
The aim of the analysis is to collect necessary data, understand these data and create conditions for plan establishment [2].
For the value stream mapping the data which can be found automatically or manually are necessary.
Consequent elaboration of these data is executed by various software tools.
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