Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: October 2011
Authors: Anirban Bhattacharya, Gurpreet Singh, Ajay Batish
Current emerged as the most significant factor affecting the microhardness along with powder mixed in the dielectric and electrode material.
The results were analyzed using analysis of variance (ANOVA) for identifying the significant factors affecting the performance.
Current followed by powder suspended in dielectric were identified as significant factors affecting microhardness of the non-deposited region.
Electrode material and current are the other two factors that significantly affect the microhardness.
The presence of copper has marginal effect on improving the mechanical properties of ferrite phase.
The results were analyzed using analysis of variance (ANOVA) for identifying the significant factors affecting the performance.
Current followed by powder suspended in dielectric were identified as significant factors affecting microhardness of the non-deposited region.
Electrode material and current are the other two factors that significantly affect the microhardness.
The presence of copper has marginal effect on improving the mechanical properties of ferrite phase.
Online since: January 2014
Authors: Yu Xue Sun, Yuan Long Xiang, Ze Hua Wang, Li Ming Zheng
A New Method Forecasting Physical and Chemical Properties of the Shale Based on Quantum Neural Network
Yuxue Sun1,a, Yuanlong Xiang1,b, Zehua Wang1,c, Liming Zheng2,d
1Petroleum Engineering Department in Northeast Petroleum University, Daqing, Heilongjiang, China 163318;
2 Shallow Water Oil Development Company PetroChina Liaohe Oilfield Branch Company, Panjin, Liaoning, China 124010
afengxuexyl@126.com, b121533370@qq.com, c1175820014@qq.com, dfengxuexyl123@126.com
Keywords: sidewall instability; shale; quantum neural network; prediction; influence factors
Abstract: Influence factors of sidewall stability contain mechanical factors and chemical factors.
Based on the collection of the influence factors of physical and chemical properties of the shale, we decided the main factors that influence the stability through the simple correlation analysis and applied a kind of quantum neural network based on the multilayer excitation function.
Influence Factors of the Sidewall Stability Using the quantum neural network to predict the physical and chemical properties of the shale, firstly, the main influence factors should be determined.
There are many factors which affect physical and chemical properties(recovery rate, expansion rate, cation exchange capacity, etc.) of shale.It is difficult that all factors are collected to train.
Physical and chemical properties of shale are the main factors which influence sidewall stability.
Based on the collection of the influence factors of physical and chemical properties of the shale, we decided the main factors that influence the stability through the simple correlation analysis and applied a kind of quantum neural network based on the multilayer excitation function.
Influence Factors of the Sidewall Stability Using the quantum neural network to predict the physical and chemical properties of the shale, firstly, the main influence factors should be determined.
There are many factors which affect physical and chemical properties(recovery rate, expansion rate, cation exchange capacity, etc.) of shale.It is difficult that all factors are collected to train.
Physical and chemical properties of shale are the main factors which influence sidewall stability.
Online since: December 2009
Authors: Hassan Farhangi, S. Alipour
They showed that the mechanical properties
of actual corroded specimens correspond well with that of the artificially pitted specimens.
Accordingly it was concluded that the mechanical properties of pitted sections can be predicted using artificially pitted specimens [5, 8].
Hp D Experimental Methods Low carbon steel plates were used in this study as a structural material to simulate the effects of corrosion pits on mechanical properties.
It is clear that the introductions of first few pits and their growth to larger depths could be very detrimental to the mechanical properties of structural alloys.
Pilkey: Peterson`s Stress Concentration Factors (John Wiley & Sons Inc., Canada 1997).
Accordingly it was concluded that the mechanical properties of pitted sections can be predicted using artificially pitted specimens [5, 8].
Hp D Experimental Methods Low carbon steel plates were used in this study as a structural material to simulate the effects of corrosion pits on mechanical properties.
It is clear that the introductions of first few pits and their growth to larger depths could be very detrimental to the mechanical properties of structural alloys.
Pilkey: Peterson`s Stress Concentration Factors (John Wiley & Sons Inc., Canada 1997).
Online since: December 2012
Authors: Han Sun, Hua Wu Liu, Kai Fang Xie, Shu Wei Yang, Tian Yang Yang, Wei Wei Hu
Ren reported that the key factors affecting composite strength were the fiber length and fiber content and wood density [3].
Influences of basalt glass powder contents on mechanical properties of fir sawdust panels.
The content of basalt crystal glass powder (%) 0% 5% 10% 15% 20% Tensile strength (MPa) 11.772 14.864 21.455 21.964 18.867 Elongation at break (%) 1.580 1.627 1.857 1.897 1.647 Bending strength (MPa) 27.422 29.747 37.900 35.850 33.798 The linking fastness of material interface is key factor affecting the mechanical properties [5].
The mechanical properties went down after then.
Properties of Polymer.
Influences of basalt glass powder contents on mechanical properties of fir sawdust panels.
The content of basalt crystal glass powder (%) 0% 5% 10% 15% 20% Tensile strength (MPa) 11.772 14.864 21.455 21.964 18.867 Elongation at break (%) 1.580 1.627 1.857 1.897 1.647 Bending strength (MPa) 27.422 29.747 37.900 35.850 33.798 The linking fastness of material interface is key factor affecting the mechanical properties [5].
The mechanical properties went down after then.
Properties of Polymer.
Online since: January 2016
Authors: Andrejs Sergejevs, Janis Ozolins, Eriks Gerins, Artis Kromanis
Castings of tin bronzes are widely used in engineering due to good mechanical and casting properties.
Mechanical properties and chemical composition of CuSn5ZnPb2-C.
Mechanical properties and chemical composition of CuSn12-C.
Mechanical properties and chemical composition of CuSn7Zn4Pb7.
Conclusions It was found that the casting velocity does not affect the mechanical properties of the tin bronzes, which contain a small amount of lead as in the case of bronze alloy CuSn12 and bronze alloy CuSn5Zn5Pb2 with a high zinc content.
Mechanical properties and chemical composition of CuSn5ZnPb2-C.
Mechanical properties and chemical composition of CuSn12-C.
Mechanical properties and chemical composition of CuSn7Zn4Pb7.
Conclusions It was found that the casting velocity does not affect the mechanical properties of the tin bronzes, which contain a small amount of lead as in the case of bronze alloy CuSn12 and bronze alloy CuSn5Zn5Pb2 with a high zinc content.
Online since: August 2011
Authors: Wei Li Tian, Cheng Qi Wang, Dong Dong Wang
Experimental Study on Influential Factors of Adiabatic Temperature Rise for Mass Concrete
Dongdong Wang1,a, Weili Tian2,b and Chengqi Wang3,c
1,3Shanghai Third Harbour Engineering Science & Technology Research Institute Co., Ltd.
The results reflect that binder is the main factor affecting adiabatic temperature rise, mineral admixtures such as fly ash can significantly reduce the rate and amount of heat development, large quantity substitution of slag in concrete can relieve the concentrative heat liberation, the retarded superplasticizer can prolong the exothermic process effectively and high placing temperature has adverse effect on temperature control of mass concrete.
It is essential to know the thermal properties of concrete to deal with any problems caused by temperature.
Physical and mechanical properties of cement and mineral admixtures are shown in Table 2 and Table 3.
Experimental results indicate that the composition and content of binder in per cubic concrete are the main factors influencing adiabatic temperature rise of concrete.
The results reflect that binder is the main factor affecting adiabatic temperature rise, mineral admixtures such as fly ash can significantly reduce the rate and amount of heat development, large quantity substitution of slag in concrete can relieve the concentrative heat liberation, the retarded superplasticizer can prolong the exothermic process effectively and high placing temperature has adverse effect on temperature control of mass concrete.
It is essential to know the thermal properties of concrete to deal with any problems caused by temperature.
Physical and mechanical properties of cement and mineral admixtures are shown in Table 2 and Table 3.
Experimental results indicate that the composition and content of binder in per cubic concrete are the main factors influencing adiabatic temperature rise of concrete.
Online since: May 2021
Authors: V. Bespalov, S. Sidelnikov, D. Voroshilov, A. Kovaleva, D. Nazarenko
The estimation of the dependence of the mechanical properties of the rods on the variable factors has been carried out.
Further, the obtained extruded semi-finished products were tested to determine mechanical properties (ultimate tensile strength Rm and elongation to failure A) and electrical properties (electrical resistivity ρ).
Mechanical properties of semi-finished products obtained by the CCRE method.
Mechanical properties of semi-finished products obtained by the CRE method.
The assessment of the dependence of the mechanical properties of the rods on variable factors, such as the rate of deformation and processing temperature, is carried out.
Further, the obtained extruded semi-finished products were tested to determine mechanical properties (ultimate tensile strength Rm and elongation to failure A) and electrical properties (electrical resistivity ρ).
Mechanical properties of semi-finished products obtained by the CCRE method.
Mechanical properties of semi-finished products obtained by the CRE method.
The assessment of the dependence of the mechanical properties of the rods on variable factors, such as the rate of deformation and processing temperature, is carried out.
Online since: May 2014
Authors: Leszek Adam Dobrzański, Wojciech Borek, Janusz Mazurkiewicz
Application of sheets with lower thickness requires using sheets with higher mechanical properties, however keeping adequate formability.
Advantageous mixture of mechanical properties obtained by these steels, i.e.
Mechanical twinning induced by the cold working of the high-manganese austenitic TWIP steel has a significant effect on forming their structure and mechanical properties.
The high-manganese austenitic steels with the properly formed structure and properties and especially with the big strain energy per unit volume yield the possibility to be used for the constructional elements of cards affecting advantageously the passive safety of the vehicles' passengers.
Schindler, The influence of hot rolling on mechanical properties of high-Mn TWIP steels, Proceedings of the 3rd International Conference on Thermo-mechanical Processing of Steels - TMP‘2008, Padua, 2008 (CD-ROM)
Advantageous mixture of mechanical properties obtained by these steels, i.e.
Mechanical twinning induced by the cold working of the high-manganese austenitic TWIP steel has a significant effect on forming their structure and mechanical properties.
The high-manganese austenitic steels with the properly formed structure and properties and especially with the big strain energy per unit volume yield the possibility to be used for the constructional elements of cards affecting advantageously the passive safety of the vehicles' passengers.
Schindler, The influence of hot rolling on mechanical properties of high-Mn TWIP steels, Proceedings of the 3rd International Conference on Thermo-mechanical Processing of Steels - TMP‘2008, Padua, 2008 (CD-ROM)
Online since: February 2014
Authors: Anurat Wisitsoraat, Charnnarong Saikaew, Parinya Srisattayakul, Naphatara Intanon
It was found that the three coating factors affected the elastic modulus of the MoN coating on upper hooks.
In addition, mechanical, physical, and chemical properties of molybdenum nitrides are typically important for wear resistance, crack resistance, and corrosion resistance [4].
The elastic modulus (or Young’s modulus: E) is a material property which describes the elasticity or stiffness of a material.
Interaction effect plots of elastic modulus Since all sputtering factors and interactions between two factors were statistically significant at the significance level of 0.05, interactions were typically used to determine the optimal operating condition of the significant factors [8].
Since the interaction effect between the factors of operating pressure and Ar/N2 was higher than the other two interaction effects (see Table 2), the interaction effect plot between the two factors (operating pressure and Ar/N2) then was used to determine the optimal operating condition of the significant factors.
In addition, mechanical, physical, and chemical properties of molybdenum nitrides are typically important for wear resistance, crack resistance, and corrosion resistance [4].
The elastic modulus (or Young’s modulus: E) is a material property which describes the elasticity or stiffness of a material.
Interaction effect plots of elastic modulus Since all sputtering factors and interactions between two factors were statistically significant at the significance level of 0.05, interactions were typically used to determine the optimal operating condition of the significant factors [8].
Since the interaction effect between the factors of operating pressure and Ar/N2 was higher than the other two interaction effects (see Table 2), the interaction effect plot between the two factors (operating pressure and Ar/N2) then was used to determine the optimal operating condition of the significant factors.
Online since: May 2022
Authors: Victor Tochukwu Ibeabuchi, Clifford Ugochukwu Nwoji, Chizoo Esonye
The reduction in the mechanical properties (compressive strength) of structural concrete after an exposure to high temperatures has been studied since the last century.
Pillai, Mechanical properties and durability performance of concretes with Limestone Calcined Clay Cement (LC3 ).
Lee , Mechanical Properties of Concrete depending on Cooling Conditions After High Temperature Heating.
Mechanical properties of concrete composites subject to elevated temperature.
Song, Impact of high-temperature-water cooling damage on the mechanical properties of concrete.
Pillai, Mechanical properties and durability performance of concretes with Limestone Calcined Clay Cement (LC3 ).
Lee , Mechanical Properties of Concrete depending on Cooling Conditions After High Temperature Heating.
Mechanical properties of concrete composites subject to elevated temperature.
Song, Impact of high-temperature-water cooling damage on the mechanical properties of concrete.