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Online since: June 2022
Authors: Cui Liang, Jin Jun Tang, Chen Guang Xu
It can exist in the alloy matrix with a large mass fraction and maintain high mechanical and physical properties at high temperature.
Therefore, the effects of the type, content, morphology and distribution of Ni rich heat resistant phase on the high temperature mechanical properties of the alloy were studied[5,6].
Thus, the sharp decline of mechanical properties of the alloy caused by the increase of temperature is greatly delayed.
The main factors affecting the thermal strengthening of these second phases are the properties of the second phase and the shape, size and distribution of the second phase.
As shown in Figure 4, M142 is a eutectic aluminum alloy with small scale of primary Si phase and good mechanical properties.
Therefore, the effects of the type, content, morphology and distribution of Ni rich heat resistant phase on the high temperature mechanical properties of the alloy were studied[5,6].
Thus, the sharp decline of mechanical properties of the alloy caused by the increase of temperature is greatly delayed.
The main factors affecting the thermal strengthening of these second phases are the properties of the second phase and the shape, size and distribution of the second phase.
As shown in Figure 4, M142 is a eutectic aluminum alloy with small scale of primary Si phase and good mechanical properties.
Online since: July 2013
Authors: Zhi Wei Jiao, You Chen Zhang, Yue Xing Liu, Peng Zhao, Wei Min Yang
Finite Element Analysis for Mechanical Properties of a New Section Contour Tire
Zhiwei Jiao1,2,a, Peng Zhao1,2,b, Yuexing Liu1,2,c, Youchen Zhang1,2,d*, and Weimin Yang1,2,e
1,2College of Mechanical And Electrical Engineering,Beijing University of Chemical Technology
Beijing 100029, China;
1,2National Engineering Laboratory for Tire Design and Manufacture, Weihai, 264200,China
ajiaozw@126.com, bzealp@126.com, clyx912@126.com, dzhangyc@mail.buct.edu.cn, eyangwm@mail.buct.edu.cn
Keywords: Tire; Triangle balance contour; Contact; Finite element
Abstract.
Tire’s performances directly affect the steering stability, riding comfort and braking (driving) performance of the car[1].
A triangle balance contour tire model was established based on the exsting 255/30R22 radial tire and the related mechanical properties were analysed by using ABAQUS software.
As is known to all, the friction coefficient between tire and road is influenced by many factors.
And the steering performance is affected by the cornering performance significantly.
Tire’s performances directly affect the steering stability, riding comfort and braking (driving) performance of the car[1].
A triangle balance contour tire model was established based on the exsting 255/30R22 radial tire and the related mechanical properties were analysed by using ABAQUS software.
As is known to all, the friction coefficient between tire and road is influenced by many factors.
And the steering performance is affected by the cornering performance significantly.
Online since: February 2014
Authors: Ji Chao Peng, Xue Qing Zhang, She Rong Hu, Yun Xun Zhang
Geological structure, especially fault, is one of the main factors resulted in water-inrush.
From space, the conductivity properties of a large fault change sharply along the direction and tendency.
It is important to note that the conductivity properties of fault, even the same fault, have significant differences along the strike and tendencies
Figure 3 Fault activation mechanical model The main factor of fault activation is the mining pressure which has changed the stress state.
References [1] Jing Cai Zhang,Tian Quan Liu, Analysis and Study of coal floor water bursting influencing factors, J.
From space, the conductivity properties of a large fault change sharply along the direction and tendency.
It is important to note that the conductivity properties of fault, even the same fault, have significant differences along the strike and tendencies
Figure 3 Fault activation mechanical model The main factor of fault activation is the mining pressure which has changed the stress state.
References [1] Jing Cai Zhang,Tian Quan Liu, Analysis and Study of coal floor water bursting influencing factors, J.
Online since: November 2011
Authors: F. Salehuddin, F. A. Hamid, A. Zaharim, I. Ahmad
In this research, oxide growth temperature was the major factor affecting the threshold voltage (69%), whereas halo implant tilt was the second ranking factor (20%).
Wang et al. [3] have reported that the halo implant angle plays an important role in device properties.
The optimizations of the NMOS device has been done by changing individual process parameters (factors) laid out by the ATHENA [9].
In the nominal-the-best, there are two types of factor to find which are dominant and adjustment factors.
For NMOS device, oxide growth temperature was found to be the major factor affecting the threshold voltage (69%), whereas halo implant tilt was found to be the second ranking factor (20%).
Wang et al. [3] have reported that the halo implant angle plays an important role in device properties.
The optimizations of the NMOS device has been done by changing individual process parameters (factors) laid out by the ATHENA [9].
In the nominal-the-best, there are two types of factor to find which are dominant and adjustment factors.
For NMOS device, oxide growth temperature was found to be the major factor affecting the threshold voltage (69%), whereas halo implant tilt was found to be the second ranking factor (20%).
Online since: May 2025
Authors: Rime El Harrouni, Najoua Eraza, El Hassan Sebbar, Majid Mansour, Amine Hajji, Najma Laaroussi
The study assessed the mechanical and physical properties, such as porosity and water absorption, before and after exposure to simulated climate conditions.
The findings indicated that the Mediterranean climate significantly affects the weathering and decay of stone materials, leading to changes in their physical properties.
The study investigated how salt contamination affected the physical properties of the stones, such as compressive strength and water absorption capacity.
The authors demonstrated that the mechanical and thermal characteristics of construction stones can change significantly in the presence of salts, potentially affecting their performance and durability in buildings.
Ozcelik, Joint simulation of a building stone deposit using minimum/maximum autocorrelation factors, Constr.
The findings indicated that the Mediterranean climate significantly affects the weathering and decay of stone materials, leading to changes in their physical properties.
The study investigated how salt contamination affected the physical properties of the stones, such as compressive strength and water absorption capacity.
The authors demonstrated that the mechanical and thermal characteristics of construction stones can change significantly in the presence of salts, potentially affecting their performance and durability in buildings.
Ozcelik, Joint simulation of a building stone deposit using minimum/maximum autocorrelation factors, Constr.
Online since: November 2014
Authors: Xin Liu, Wei Mei Zou
Abstract: This article briefly describes the background and the advantages of the automatic software testing technology research, summarizes the development, the features, and the research directions of the automatic software testing technology, and then example of analyses the testing process and factors of automatic software testing technology based on the C-ATFM automatic test model.
The initial research on automatic testing technology is focusing on how to use the automatic methods implements and replaces the tedious and repetitive mechanical work of the manual testing [3].
The affect factors of the automatic software testing techniques Automatic software testing technology brings many benefits but also some new problems.
How to make the automatic testing self-learning, improve the complexity and accuracy of testing are all the factors that impacts the prediction of the automatic tests[5].
Study on using apparent spectrum to retrieve the inherent optical properties of ocean water.
The initial research on automatic testing technology is focusing on how to use the automatic methods implements and replaces the tedious and repetitive mechanical work of the manual testing [3].
The affect factors of the automatic software testing techniques Automatic software testing technology brings many benefits but also some new problems.
How to make the automatic testing self-learning, improve the complexity and accuracy of testing are all the factors that impacts the prediction of the automatic tests[5].
Study on using apparent spectrum to retrieve the inherent optical properties of ocean water.
Online since: August 2009
Authors: Yong Wang, Yu Hua Chen, Zheng Fang Wang
The temperature field and the thermal cycle of weld joint are all important
factors affecting microstructure and performance of weld joint.
It is necessary to research thermal cycle in order to obtain good microstructure, mechanical property and avoid HIC.
�umerical model of in-service welding The numerical model of in-service welding was build and the thermal physical properties of the natural gas varying with temperature were considered too.
The thermal physical properties of CH4 are used as thermal physical properties of natural gas, for the content of CH4 in natural gas is over than 90%.
The material of pipe is X70 pipeline steel and its thermal physical properties varying with temperature are also considered.
It is necessary to research thermal cycle in order to obtain good microstructure, mechanical property and avoid HIC.
�umerical model of in-service welding The numerical model of in-service welding was build and the thermal physical properties of the natural gas varying with temperature were considered too.
The thermal physical properties of CH4 are used as thermal physical properties of natural gas, for the content of CH4 in natural gas is over than 90%.
The material of pipe is X70 pipeline steel and its thermal physical properties varying with temperature are also considered.
Online since: October 2014
Authors: Zhao Liang Jiang, Zhi Li, Wei Yi
Section 2 describes the mechanical properties of the workpiece and the experimental setup.
The three factors are shown in Table1 and an orthogonal table is shown in Table 2.
Fig.3 shows that cutting speed affects flatness very much when the workpiece was clamped on the fixture, axial depth of cut affects flatness less and feed per tooth the least.
Fig.5 shows that axial depth of cut affects flatness when the workpiece was 3 hours after released from the fixture, cutting speed less, and feed per tooth the least.
Fig.6 shows that axial depth of cut affects flatness when the workpiece was 6 hours after released from the fixture, feed per tooth less, and cutting speed the least.
The three factors are shown in Table1 and an orthogonal table is shown in Table 2.
Fig.3 shows that cutting speed affects flatness very much when the workpiece was clamped on the fixture, axial depth of cut affects flatness less and feed per tooth the least.
Fig.5 shows that axial depth of cut affects flatness when the workpiece was 3 hours after released from the fixture, cutting speed less, and feed per tooth the least.
Fig.6 shows that axial depth of cut affects flatness when the workpiece was 6 hours after released from the fixture, feed per tooth less, and cutting speed the least.
Online since: March 2023
Authors: Cem Dolu, Ipek Yalçın Eniş, Hande Sezgin, Merve Kucukali-Ozturk
Within the scope of the study, thermal and sound insulation properties of carded and needle-punched pantyhose wastes are investigated.
The results show that the thermal and acoustic properties of the developed material are at a sufficient level, and it has ensured that polyamide wastes, which have superior properties among thermoplastic polymers and have high economic value, are brought back into the economy.
These studies show that the main factors affecting the heat transfer and sound absorption properties of the material are density, thickness, porosity and tortuosity.
These properties make textile-reinforced composites promising materials for sound and thermal insulation.
This process is important for improving the mechanical properties and reducing the sample thickness.
The results show that the thermal and acoustic properties of the developed material are at a sufficient level, and it has ensured that polyamide wastes, which have superior properties among thermoplastic polymers and have high economic value, are brought back into the economy.
These studies show that the main factors affecting the heat transfer and sound absorption properties of the material are density, thickness, porosity and tortuosity.
These properties make textile-reinforced composites promising materials for sound and thermal insulation.
This process is important for improving the mechanical properties and reducing the sample thickness.
Online since: September 2013
Authors: Lian Hua Zhao, Xiao Bo Wei, Xiao Guang Li
The pros and cons of the five rubbers are analyzed by friction and wear properties of the above experimental.
Conveyor belts is between the metal rotor and rubber bushing under dry friction condition, the dry friction of rubber wear will directly affect the life capacity of belt [5-8].
Friction coefficient with time under dry sliding (a) CR (b) blended rubber by 8:2 ratio (c) blended rubber by 5:5 ratio (d) blended rubber by 2:8 ratio (e)EPDM Sliding process, the working conditions (load and speed), friction and wear is often due to temperature rise caused a lot of material mechanical properties (elastic modulus and hardness), and lubricating properties as the interface temperature rise degradation, thus affecting their tribological behavior [9].
Loads must change at the same speed, with increasing load , the test conditions of rapid temperature rise would have an impact , to do the test of change load , when the load is low , the impact of load variation on the friction coefficient significantly in the temperature on the friction coefficient , when the load increases to a certain value , the change of load on the friction coefficient is weakened the temperature change has become a major factor influencing the fluctuations in the friction coefficient , but the determinants of the coefficient of friction is the material properties.
An investigation of mechanical and rheological properties of EPDM/PVC blends: influence of anhydride additives, mixing procedure and EPDM form.
Conveyor belts is between the metal rotor and rubber bushing under dry friction condition, the dry friction of rubber wear will directly affect the life capacity of belt [5-8].
Friction coefficient with time under dry sliding (a) CR (b) blended rubber by 8:2 ratio (c) blended rubber by 5:5 ratio (d) blended rubber by 2:8 ratio (e)EPDM Sliding process, the working conditions (load and speed), friction and wear is often due to temperature rise caused a lot of material mechanical properties (elastic modulus and hardness), and lubricating properties as the interface temperature rise degradation, thus affecting their tribological behavior [9].
Loads must change at the same speed, with increasing load , the test conditions of rapid temperature rise would have an impact , to do the test of change load , when the load is low , the impact of load variation on the friction coefficient significantly in the temperature on the friction coefficient , when the load increases to a certain value , the change of load on the friction coefficient is weakened the temperature change has become a major factor influencing the fluctuations in the friction coefficient , but the determinants of the coefficient of friction is the material properties.
An investigation of mechanical and rheological properties of EPDM/PVC blends: influence of anhydride additives, mixing procedure and EPDM form.