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Online since: December 2022
Authors: Ping Zhu, Jian Lu Shang, Zhong Bing Chen, Zhi Qiang Sun, Li Lu, Zhen Xin Liang
Factors affecting DDC are complex and numerous, such as precipitated phase, impurity element segregation and grain boundary properties [8, 9], etc.
However, it is normally difficult to evaluate the influence of grain boundary on DDC alone due to complex influencing factors.
In terms of macro properties, 305 sample has stronger grain boundary deformation ability and higher VoA than that of 315.
In addition to the microstructure and dislocation operation, there may be other influencing factors, which need to be further studied.
High Temperature Tensile Properties of FM-52M Nickel-base Alloy Cladding.
However, it is normally difficult to evaluate the influence of grain boundary on DDC alone due to complex influencing factors.
In terms of macro properties, 305 sample has stronger grain boundary deformation ability and higher VoA than that of 315.
In addition to the microstructure and dislocation operation, there may be other influencing factors, which need to be further studied.
High Temperature Tensile Properties of FM-52M Nickel-base Alloy Cladding.
Online since: September 2013
Authors: Lei An, Zhenhua Cai, Na Si, Yu Jin Yuan
Since the property of coal bed is with low permeability and hard to achieve industrial flow rate.
It has the characteristics of medium thickness and depth of the coal formation, low permeability, high mechanical strength of the coal rock, and high gas content and saturation etc.
The quantity and length of branch holes are the sensitive man2made factors for affecting productivity, which can be changed by the engineering design optimization to bring the productivity potential of directional pinnate horizontal wells into full play.
The distance between them is approximately 900m, and both wells have similar property.
We points out that reasonable production system and carefully drainage control are the key factor to ensure production successfully, and ur-continuity drainage, superfluous drainage intensity and rapidly depress bottom-hole flowing pressure(BHP) are the main engineering factors to influence CMB horizontal well output in China.
It has the characteristics of medium thickness and depth of the coal formation, low permeability, high mechanical strength of the coal rock, and high gas content and saturation etc.
The quantity and length of branch holes are the sensitive man2made factors for affecting productivity, which can be changed by the engineering design optimization to bring the productivity potential of directional pinnate horizontal wells into full play.
The distance between them is approximately 900m, and both wells have similar property.
We points out that reasonable production system and carefully drainage control are the key factor to ensure production successfully, and ur-continuity drainage, superfluous drainage intensity and rapidly depress bottom-hole flowing pressure(BHP) are the main engineering factors to influence CMB horizontal well output in China.
Online since: June 2011
Authors: Fu Shun Liu, Hang Man Lai
Introduction
Near-equiatomic TiNi shape memory alloys (SMAs) have been widely applied to aerospace, aviation and medicine industries owing to their superior functional properties such as shape memory effect, biocompatibility and excellent mechanical properties[1].
For instance, the effect of Nd addition and Al addition on the phase transformation and mechanical properties of TiNiFe shape memory alloys have been investigated [4,5].
The TiNiFe SMAs will be an ideal material for low temperature driving actuators because of its low phase transformation temperature and excellent mechanical properties.
It is known that the R phase transformation in the TiNi based SMAs supposed to be affected by four main factors which including Ni content in the alloy, ageing treatment, thermo-mechanical treatment and composition of the alloy [6].
Influence of Fe Addition on Phase Transformation Temperatures and Mechanical Properties of TiNi Shape Memory Alloys.
For instance, the effect of Nd addition and Al addition on the phase transformation and mechanical properties of TiNiFe shape memory alloys have been investigated [4,5].
The TiNiFe SMAs will be an ideal material for low temperature driving actuators because of its low phase transformation temperature and excellent mechanical properties.
It is known that the R phase transformation in the TiNi based SMAs supposed to be affected by four main factors which including Ni content in the alloy, ageing treatment, thermo-mechanical treatment and composition of the alloy [6].
Influence of Fe Addition on Phase Transformation Temperatures and Mechanical Properties of TiNi Shape Memory Alloys.
Online since: July 2014
Authors: Ling Xu, Xiang Yu, Zhen Yu Di
Introduction
In the process of the buildings’ long-term use, as time goes on, the security failure will occur or enter into the period of functional degradation in the case of internal or external, artificial or natural and other factors, which is an irreversible process.
Especially the reinforced concrete beams in the long process of using, which will lead to unfavorable factors, which including deterioration of performance, decreased carrying capacity, stability and durability.
In order to study the destroyed concrete beams which are reinforced by the CFRP of mechanical properties, mainly including the measured carrying capacity, the mid span section of concrete strain, crack deflection and crack the case at each level of loading and other indicators.
Conclusions The test results conducted by the general reinforced concrete beams reinforced through the CFRP testing and destructive testing of reinforced concrete beams reinforced after the results of comparative analysis can draw the following conclusions: Pasted with CFRP reinforced damaged reinforced concrete beams , not only can restore the original structure’s carrying capacity, but also can improve the carrying capacity of the mechanical properties of the original structure , making the carrying capacity increasing significantly.
Pasting affect the quality of CFRP fracture mode directly while observing during the test, while reinforced construction, we must ensure the quality of CFRP full immersed and pasted in order to make it overall play.
Especially the reinforced concrete beams in the long process of using, which will lead to unfavorable factors, which including deterioration of performance, decreased carrying capacity, stability and durability.
In order to study the destroyed concrete beams which are reinforced by the CFRP of mechanical properties, mainly including the measured carrying capacity, the mid span section of concrete strain, crack deflection and crack the case at each level of loading and other indicators.
Conclusions The test results conducted by the general reinforced concrete beams reinforced through the CFRP testing and destructive testing of reinforced concrete beams reinforced after the results of comparative analysis can draw the following conclusions: Pasted with CFRP reinforced damaged reinforced concrete beams , not only can restore the original structure’s carrying capacity, but also can improve the carrying capacity of the mechanical properties of the original structure , making the carrying capacity increasing significantly.
Pasting affect the quality of CFRP fracture mode directly while observing during the test, while reinforced construction, we must ensure the quality of CFRP full immersed and pasted in order to make it overall play.
Online since: October 2014
Authors: Jian Xiu Su, Song Zhan Fan, Jia Peng Chen, Hai Feng Cheng
In chemical mechanical polishing (CMP) of ultra-thin stainless steel, the oxidant of polishing slurry determines the material removal rate (MRR).
In recent years, compared with LCD, OLED flat-panel display and plasma display, the advantages of flexible displays have become increasingly prominent, because of its ultra-thin, light weight, durable, large storage capacity, the design freedom, crooked, winded and impact resistance and other properties[1-2].
The processing quality and precision of ultra-thin stainless steel will directly affect the performance of the device [8].
Chemical mechanical polishing (CMP) has been considered as a practical and irreplaceable planarization technology in IC manufacturing.
The oxidant in the slurry can form the oxide film on the substrate surface and removed easily at the subsequent mechanical action.
In recent years, compared with LCD, OLED flat-panel display and plasma display, the advantages of flexible displays have become increasingly prominent, because of its ultra-thin, light weight, durable, large storage capacity, the design freedom, crooked, winded and impact resistance and other properties[1-2].
The processing quality and precision of ultra-thin stainless steel will directly affect the performance of the device [8].
Chemical mechanical polishing (CMP) has been considered as a practical and irreplaceable planarization technology in IC manufacturing.
The oxidant in the slurry can form the oxide film on the substrate surface and removed easily at the subsequent mechanical action.
Online since: January 2012
Authors: Cheng Liang Li, Zhao Yan Li
China has hundreds of Mines exist such problems that seriously affect the deep coal resources safety and efficient mining [2].
For the next step to determine the type of soft rock tunnel, mechanical deformation mechanism of rock stability control measures and provide the basis for supporting technology.
By X-ray diffraction analysis, the factors that endanger stability of surrounding rock the first factor is the amorphous mass fraction is too high, the second factor is the relatively high mass fraction of clay minerals, in which the expansion of the mineral mass fraction higher.
Scheme design Large internal porosity of soft rock, not only the low strength and large deformation, but also exhibit plasticity, rheology and other complex mechanical properties [4].
For the next step to determine the type of soft rock tunnel, mechanical deformation mechanism of rock stability control measures and provide the basis for supporting technology.
By X-ray diffraction analysis, the factors that endanger stability of surrounding rock the first factor is the amorphous mass fraction is too high, the second factor is the relatively high mass fraction of clay minerals, in which the expansion of the mineral mass fraction higher.
Scheme design Large internal porosity of soft rock, not only the low strength and large deformation, but also exhibit plasticity, rheology and other complex mechanical properties [4].
Online since: May 2004
Authors: D.D. Fabbriche, Cesare Melandri, A. Piancastelli, Leonardo Esposito
In particular, the microstructure and mechanical properties of two ceramized Softwoods
(redwood -Pinus sylvestris- and whitewood -Picea abies-) and two Hardwoods (Poplar -Populus-
and Obece -Triplochiton scleroxylon-), are described.
The scattering factors used were 6.46 [8] and 4.7 [9], for β-SiC and Si, respectively.
Properties of pyrolysed wood after infiltration with silicon.
Attention must be focused on the selection of the wood in function of the requirements for specific applications, since different woods exhibits very different mechanical and microstructural properties.
Ashby, Cellular Solids: Structure and Properties (Cambridge University Press, UK, 1997)
The scattering factors used were 6.46 [8] and 4.7 [9], for β-SiC and Si, respectively.
Properties of pyrolysed wood after infiltration with silicon.
Attention must be focused on the selection of the wood in function of the requirements for specific applications, since different woods exhibits very different mechanical and microstructural properties.
Ashby, Cellular Solids: Structure and Properties (Cambridge University Press, UK, 1997)
Online since: July 2016
Authors: Pavel Svoboda, Helmut Kurth
Also the subsoil water runoff depends on soil properties.
However, since the dust content of the atmosphere depends on meteorological factors, ground configuration, properties of dust-generating substances, performed operations and their intensity, its concentration cannot be determined in advance.
The method cannot be applied, either, if the water should affect the adjacent buildings intended for demolition.
Erosion and soil impairment Soil is a natural formation which has originated at the boundary between the earth crust and the atmosphere by the synergy of soil-forming factors.
The principal soil-forming factors include: - parent substrate - climate - ground water - organisms - ground relief - human activities.
However, since the dust content of the atmosphere depends on meteorological factors, ground configuration, properties of dust-generating substances, performed operations and their intensity, its concentration cannot be determined in advance.
The method cannot be applied, either, if the water should affect the adjacent buildings intended for demolition.
Erosion and soil impairment Soil is a natural formation which has originated at the boundary between the earth crust and the atmosphere by the synergy of soil-forming factors.
The principal soil-forming factors include: - parent substrate - climate - ground water - organisms - ground relief - human activities.
Online since: October 2025
Authors: Rini Widyaningrum, Andreas Setiawan, Atika Windra Sari, Mitrayana Mitrayana
The thermal diffusion length of the material was determined using this method based on its characteristic properties, namely thermal conductivity and material diffusivity, in order to generate an image of each teeth layer (17).
A computer numerical control (CNC) is used to drive the laser and detector in the mechanical XY-stage system.
A computer (LabView) is used to characterize the XY-stage mechanical system.
The photoacoustic images obtained also show that the teeth affected by inflammation produce a brighter image than healthy teeth.
Based on Table 1, it can be assumed that the mechanical form of the five samples is the same, thereby eliminating the shape factor.
A computer numerical control (CNC) is used to drive the laser and detector in the mechanical XY-stage system.
A computer (LabView) is used to characterize the XY-stage mechanical system.
The photoacoustic images obtained also show that the teeth affected by inflammation produce a brighter image than healthy teeth.
Based on Table 1, it can be assumed that the mechanical form of the five samples is the same, thereby eliminating the shape factor.
Online since: August 2018
Authors: K. Kadirgama, A.F. Ismail, W.N.W. Salleh, N. Sazali, F.E.C. Othman
Helium is one of the most valuable gases with unique features and properties as well as widely used in various applications.
It is necessary to fine-tuning the carbonization conditions in order to obtain the desired permeation properties.
Despite of that, the type of the material used as a membrane is another factor that affecting the success of a membrane-based separation process for the purification of helium.
The properties of the membrane also can be influenced by process parameter such as carbonization heating rate in the range of 1-13oC [9-10].
In this study, the properties and performance of tubular carbon membranes (TCMs) that were fabricated by blending of PI/NCC has been studied.
It is necessary to fine-tuning the carbonization conditions in order to obtain the desired permeation properties.
Despite of that, the type of the material used as a membrane is another factor that affecting the success of a membrane-based separation process for the purification of helium.
The properties of the membrane also can be influenced by process parameter such as carbonization heating rate in the range of 1-13oC [9-10].
In this study, the properties and performance of tubular carbon membranes (TCMs) that were fabricated by blending of PI/NCC has been studied.