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Online since: November 2007
Authors: Yu Yan, Anne Neville, Long Chen Duan
In oil drilling the failures of PDC drill bits are exhibited as erosive wear, dropping and
breaking of cutters, so the erosion and corrosion resistance of the matrix is one of the key factors
affecting the quality of PDC bits.
The erosion and corrosion resistance of PDC matrix is one of the key factors affecting PDC bit's quality except for the quality of PDC itself [2].
Their properties are shown in Table 3.
WC [%] Ni [%] Cu-Sn [%] Co [%] Mn [%] Ti [%] 1 65 5 20 5 3 2 2 45 5 40 5 3 2 3 45 15 30 5 3 2 Table 3 Physical and mechanical properties of samples NO.
The impinged depth, mass loss and volume loss will change with material properties.
The erosion and corrosion resistance of PDC matrix is one of the key factors affecting PDC bit's quality except for the quality of PDC itself [2].
Their properties are shown in Table 3.
WC [%] Ni [%] Cu-Sn [%] Co [%] Mn [%] Ti [%] 1 65 5 20 5 3 2 2 45 5 40 5 3 2 3 45 15 30 5 3 2 Table 3 Physical and mechanical properties of samples NO.
The impinged depth, mass loss and volume loss will change with material properties.
Online since: July 2014
Authors: Masanori Hayase, Feng Gao, Gang Li, Hiroshi Okada, Takanori Nagasaka
The objective is to study on inverse analysis for the mechanical properties of circulating tumor cells and estimate the mechanical properties.
The procedure proposed may be also applicable in estimating other physical and mechanical properties of cells.
However, at different hierarchy levels the structural organization of cells is characterized by certain mechanical properties.
The cell mechanical properties were integrally studied when the cell was considered as a single whole and mechanical properties of the cell structural components were studied using mechanical elastic properties. [5] In this work, we developed a 3D finite element computational model of circulating tumor cells, based on circulating tumor cells flow rolling experiments.
Summary In this paper we present the inverse analysis to determination of the mechanical properties of circulating tumor cells.
The procedure proposed may be also applicable in estimating other physical and mechanical properties of cells.
However, at different hierarchy levels the structural organization of cells is characterized by certain mechanical properties.
The cell mechanical properties were integrally studied when the cell was considered as a single whole and mechanical properties of the cell structural components were studied using mechanical elastic properties. [5] In this work, we developed a 3D finite element computational model of circulating tumor cells, based on circulating tumor cells flow rolling experiments.
Summary In this paper we present the inverse analysis to determination of the mechanical properties of circulating tumor cells.
Online since: June 2013
Authors: Chun Jie Li, Hong Bo Li, Xing Jun Su, Han Chi Cheng, Jing Wang
Therefore, the role of the alloying elements, Si, Mn, Cr as the main alloying elements, design a tough wear resistant cast microstructure and mechanical properties were studied.
Considering the influencing factors of various alloy elements and to obtain the properties, design of steel chemical composition, Testing analysis of steel sample after casting, he content of alloying elements on the test results in Table 1.
Table.2 Heat treatment process number Specific process 1 casting 2 850°C×2h Furnace cooling 3 850°C×2h Furnace cooling+880°C×30min oil cooling 4 850°C×2h Furnace cooling+880°C×30min water cooling Results and Analysis Mechanical properties of the test cast steel.
Table.4 The impact toughness values in different conditions number AK/J αK/J/cm2 1 32.25 40.33 2 47.90 59.88 3 32.75 40.18 4 31.04 39.04 Contrast analysis on the mechanical properties.
Figure 3.a is a photomicrograph cast without any heat treatment before the cast metal containing large pores, the columnar dendrite grains, and these grains there is a serious segregation, these directly affect the various properties of the steel,by heat treatment can significantly improve this situation; Figure 3.b is an annealing photomicrograph can be seen, after 840 °C after the furnace cooled, the mechanical properties of its degree of thickness of the tissue of the large areas of the pearlite structure, pearlite type.
Considering the influencing factors of various alloy elements and to obtain the properties, design of steel chemical composition, Testing analysis of steel sample after casting, he content of alloying elements on the test results in Table 1.
Table.2 Heat treatment process number Specific process 1 casting 2 850°C×2h Furnace cooling 3 850°C×2h Furnace cooling+880°C×30min oil cooling 4 850°C×2h Furnace cooling+880°C×30min water cooling Results and Analysis Mechanical properties of the test cast steel.
Table.4 The impact toughness values in different conditions number AK/J αK/J/cm2 1 32.25 40.33 2 47.90 59.88 3 32.75 40.18 4 31.04 39.04 Contrast analysis on the mechanical properties.
Figure 3.a is a photomicrograph cast without any heat treatment before the cast metal containing large pores, the columnar dendrite grains, and these grains there is a serious segregation, these directly affect the various properties of the steel,by heat treatment can significantly improve this situation; Figure 3.b is an annealing photomicrograph can be seen, after 840 °C after the furnace cooled, the mechanical properties of its degree of thickness of the tissue of the large areas of the pearlite structure, pearlite type.
Online since: November 2013
Authors: Ying Gong, Bei Qing Huang, Xian Fu Wei
It has been testified that the dispersion property is the major factor that influences the CP of the white water-based covering ink.
The variety of both pigments and resins, the ratio of pigment to resin are the key factors for the CP; the result also proves that different kind of dispersants and contents are also important factors that influence the dispersion property.
The component part of ink is the most important factor to the CP of white ink.
Dispersity is one of the important factors that affect the CP of ink.
While resin plays a decisive role for dispersity of ink, the ratio of pigment to resin is also a factor that affects the dispersity.
The variety of both pigments and resins, the ratio of pigment to resin are the key factors for the CP; the result also proves that different kind of dispersants and contents are also important factors that influence the dispersion property.
The component part of ink is the most important factor to the CP of white ink.
Dispersity is one of the important factors that affect the CP of ink.
While resin plays a decisive role for dispersity of ink, the ratio of pigment to resin is also a factor that affects the dispersity.
Online since: January 2012
Authors: Ben Heng Guo, Mi Ya Su, Yin Yu Wang, Zhi Dong Liu
These results showed that ultrasonic treatment could effectively affected some functional properties of WPIs be associated with the sonication time and power density.
The ingredients of whey protein mainly including α-lactalbumin, β-lactoglobulin, immunoglobulins, lactoferrin, lactoperoxidase, and growth factors and so on.
But the external factors that affect the internal structure and aggregation state of WPIs will inevitably affect its functional properties.
The external factors such as pH, temperature, ionic strength sugar and lipid have an impact on the functional properties.
These results showed that ultrasonic treatment could effectively affected some functional properties of WPIs be associated with the sonication time and power density.
The ingredients of whey protein mainly including α-lactalbumin, β-lactoglobulin, immunoglobulins, lactoferrin, lactoperoxidase, and growth factors and so on.
But the external factors that affect the internal structure and aggregation state of WPIs will inevitably affect its functional properties.
The external factors such as pH, temperature, ionic strength sugar and lipid have an impact on the functional properties.
These results showed that ultrasonic treatment could effectively affected some functional properties of WPIs be associated with the sonication time and power density.
Online since: June 2014
Authors: Wei Liu, Xiao Hong Chen, Jun Wang
Confirmation for Coal Mine Gas Accident Risk Factors
Because each disaster risk degree is influenced by many factors.
Thus people must analysis and evaluation the affect factors of the gas, so as to determine the safety (dangerous) degree of the mine, which make the enterprise management and production personnel to accomplish know fairly well and targeted to take preventive measures in the production process.
In this paper, the main factors that affect the gas accident hazard are identified as 9 major categories evaluation project, and each project is divided into three or four categories, the total of 31 categories.
Hazards are multi-factor fuzzy comprehensive evaluation to the gas Determine the collection of evaluation gas risk factors.
Need for the two individual risk factors in safety investment in order to improve the safety level.
Thus people must analysis and evaluation the affect factors of the gas, so as to determine the safety (dangerous) degree of the mine, which make the enterprise management and production personnel to accomplish know fairly well and targeted to take preventive measures in the production process.
In this paper, the main factors that affect the gas accident hazard are identified as 9 major categories evaluation project, and each project is divided into three or four categories, the total of 31 categories.
Hazards are multi-factor fuzzy comprehensive evaluation to the gas Determine the collection of evaluation gas risk factors.
Need for the two individual risk factors in safety investment in order to improve the safety level.
Online since: December 2006
Authors: Ren Ke Kang, Dong Ming Guo, Yu Hui Sun
The within-wafer non-uniformity (WIWNU) of material removal rate in chemical
mechanical polishing (CMP) is important for IC manufacture.
The non-uniform distributions of polishing pressure and the relative speed between the wafer and the polishing pad are main factors affecting the WIWNU.
Chemical mechanical polishing (CMP) has emerged as an indispensable process for a high degree of global planarization in IC manufacturing.
(1) In above Eq.1, MRR is the material removal rate, KP is the Preston Coefficient, P is the polishing pressure, and V is the instantaneous relative velocity between the polishing pad and the wafer surface. , Because the distributions of interface pressure and relative velocity between the polishing pad and the wafer surface in CMP are non-uniform, they are major factors affect the WIWUN.
Although these models reflect the mechanics properties of pad and wafer, the causes of the wafer scale non-uniformity in polishing is not completely explained.
The non-uniform distributions of polishing pressure and the relative speed between the wafer and the polishing pad are main factors affecting the WIWNU.
Chemical mechanical polishing (CMP) has emerged as an indispensable process for a high degree of global planarization in IC manufacturing.
(1) In above Eq.1, MRR is the material removal rate, KP is the Preston Coefficient, P is the polishing pressure, and V is the instantaneous relative velocity between the polishing pad and the wafer surface. , Because the distributions of interface pressure and relative velocity between the polishing pad and the wafer surface in CMP are non-uniform, they are major factors affect the WIWUN.
Although these models reflect the mechanics properties of pad and wafer, the causes of the wafer scale non-uniformity in polishing is not completely explained.
Online since: April 2014
Authors: Huan Chun Wu, Ming Xian Zhang, Sheng Long Wang, Y. Z. Shi, Bin Yang
Effect of Solution Temperature on the Microstructure and Mechanical Properties of Wrought 316LN Stainless Steel
H.
However, the mechanical properties, microstructure and flow stress of a steel are affected often by work hardening, dynamic recovery, recrystallization, inhomogeneous deformation and precipitated phase during the forging process.
The suitable forging temperature as well as solution treatment after forging is important factor to improve the mechanical property of the steel [7,9-10].
In the present study, the effect of forging and solution temperature on the microstructure and mechanical properties of 316LN stainless steel was studied.
Effect of forging and solution temperature on the mechanical properties.
However, the mechanical properties, microstructure and flow stress of a steel are affected often by work hardening, dynamic recovery, recrystallization, inhomogeneous deformation and precipitated phase during the forging process.
The suitable forging temperature as well as solution treatment after forging is important factor to improve the mechanical property of the steel [7,9-10].
In the present study, the effect of forging and solution temperature on the microstructure and mechanical properties of 316LN stainless steel was studied.
Effect of forging and solution temperature on the mechanical properties.
Online since: January 2013
Authors: Lei Li, Jian Hua Liu, Yao Feng Ji
Dynamic Mechanical Properties of Float Glass
Li Leia, Liu Jian-huab, Ji Yao-fengc
Zhen Zhou technical college, Zhengzhou 450121, China
aLilei20031010@126.com,bzzxyljh@163.com,cjimmy_0800@163.com
Keywords: Float glass; dynamic mechanical properties; split Hopkinson pressure bar (SHPB)
Abstract.
In order to study dynamic mechanical properties of float glass under blast and ballistic/fragmentation impacts, the curves of stress- strain are obtained in higher ranges by using the modified Split Hopkinson Pressure Bar (SHPB) techniques.
Although many research efforts have been focused upon various dynamic properties [9–11], the compressive behavior of float glass under dynamic loading has not yet been reported in the open literature [12].
Considering the quality of the specimens, the relatively big sample dimension should be adopted for the testing if homogeneous properties are needed.
Dynamic mechanical properties of float glass are studied by using the modified Split Hopkinson Pressure Bar (SHPB) techniques, and the dynamic stress-strain curves are obtained.
In order to study dynamic mechanical properties of float glass under blast and ballistic/fragmentation impacts, the curves of stress- strain are obtained in higher ranges by using the modified Split Hopkinson Pressure Bar (SHPB) techniques.
Although many research efforts have been focused upon various dynamic properties [9–11], the compressive behavior of float glass under dynamic loading has not yet been reported in the open literature [12].
Considering the quality of the specimens, the relatively big sample dimension should be adopted for the testing if homogeneous properties are needed.
Dynamic mechanical properties of float glass are studied by using the modified Split Hopkinson Pressure Bar (SHPB) techniques, and the dynamic stress-strain curves are obtained.
Online since: May 2006
Authors: Krzysztof Jan Kurzydlowski, Bogusława Adamczyk-Cieślak, Małgorzata Lewandowska, Jaroslaw Mizera
Mechanical Properties of Ultra-Fine Grained Al-Li Alloys
B.
The aim of the present paper is to characterize the mechanical properties of model Al-Li alloys subjected to ECAE.
Mechanical properties.
Discussion Effect of Li Content on Microstructure and Mechanical Properties of Ultrafine Grain Al-Li Alloys.
One of the factors affecting the mechanical properties of materials is the grain size in a) b) a) b) Fig. 6.
The aim of the present paper is to characterize the mechanical properties of model Al-Li alloys subjected to ECAE.
Mechanical properties.
Discussion Effect of Li Content on Microstructure and Mechanical Properties of Ultrafine Grain Al-Li Alloys.
One of the factors affecting the mechanical properties of materials is the grain size in a) b) a) b) Fig. 6.