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Online since: February 2013
Authors: Jian Hua Liu, Cheng Tong Tang, Tian Zhang, Mei Hui Jia
The tube plastic bending is a multi-factor coupling process, and the influencing factors are quite complex.
It is found that the different tube material properties can be significant difference of the tube bending forming quality, so the tube mechanical properties parameters is one of the important factors that affect the quality of tube plastic bending [3-5].
In this paper, the actual mechanical property parameters of tube are obtained by uniaxial tensile tests, and the influencing factors of mechanical properties parameters are analyzed.
Input and output parameters of RBF neural network According to the influencing factors analysis of the tube mechanical properties, we take the tube diameter and wall thickness as the input parameters of the neural network, and take the mechanical property parameters of the tube as output parameter, which is as shown in Fig.4.
And it is considered by integrated analysis that the material and geometric parameters are the most important influence factors of the tube mechanical properties, where the impact of the tube wall thickness is greater than that of the tube diameter.
Online since: September 2020
Authors: Poonsub Threepopnatkul, Kamonchanok Wongsuton, Chonlada Jaiaue, Nattanan Rakkietwinai, Amnard Stittatrakul, Chanin Kulsetthanchalee
Zeolites not only improve gases permeability of polymer but also improve mechanical properties and thermal properties. [2-4] However, the different polarity of PBAT and zeolite affect the dispersion of zeolite in polymer matrix. 3-aminopropyl trimethoxysilane was selected as the coupling agent to improve the compatibility between zeolite and PBAT.
Results and Discussion Mechanical properties of PBAT film Mechanical properties have evidently shown a major effect on the quality of film packaging.
Diffusion and adsorption abilities depend on many factors.
Zeolite5A influenced on mechanical properties.
Zeolite5A facilitated a higher influence on mechanical properties of PBAT film than the zeolite 13X.
Online since: July 2011
Authors: Xiao Dong He, Xin Li Han, Ting Ting Qu, Li Xia Zhu
The results show that: the distribution and morphosis of the M/A constituents have strongly effect on the mechanical properties.
However, the influence of morphological, quantity, dimension and distribution of M/A constituents exist in X80 pipeline steel on mechanical properties have not been studied systematically.
These two factors contribute the higher impact absorb energy in base metal.
Generally, the strengthening effect of constitute is dominated by three factors when the composition of constitute has been known.
(2) The M/A constituents changes in average chord and volume fraction have large effect on mechanical properties.
Online since: August 2008
Authors: Anak Khantachawana, Nattiree Chiranavanit, N. Anuwongnukroh, Surachai Dechkunakorn
Assessment of Mechanical Properties and Transformation Behavior of Locally-made Ni-Ti Alloys Used in Orthodontics N.
The purpose of this study was to assess the mechanical properties and phase transformation of 50.7Ni-49.3 Ti (at%) alloy (NT) and 45.2Ni-49.8Ti-5.0Cu (at%) alloy (NTC), cold-rolled with various percent reductions.
The results showed that locally-made Ni-Ti alloys have various transformation behaviors and mechanical properties depending on three principal factors: chemical composition, work-hardening (the percent reduction) and heat-treatment temperature.
After removing any oxide layers and surface contaminants by mechanical polishing, the specimens were annealed at 400°C and 600°C in a vacuum heat treatment furnace for 1 hour in order to study the influence of recrystallzation on the mechanical properties and transformation behavior of the alloys.
Optical micrograph (20X) showing grain structure of NTC with 20% reduction and 400°C heat treatment Summary The principal factors affecting the transformation behavior and mechanical properties of Ni-Ti alloys are chemical compositions, working history and heat treatment temperature.
Online since: October 2008
Authors: Antonella M. Rossi, Ieda Maria V. Caminha, Marize Varella de Oliveira, Silvia R. A. Santos, Magna Monteiro Schaerer, Robson Pacheco Pereira
Influence of Processing on Mechanical Properties of Hydroxyapatite Marize V.
In the present work, mechanical properties of a stoichiometric hydroxyapatite (HA), synthesized by hydrothermal method, with 1.66 Ca/P molar ratio are investigated as a function of the processing parameters.
The HA chemical nature and the processing parameters used affect directly the compressibility behavior which strongly influences the ceramic processing and the final sintered HA mechanical properties [3].
According to Snyders and co-workers [7], the main factors which influence the mechanical properties of HA are the density, the shape of the pores, the crystallinity, the grain size and the purity of the HA phase.
Also the compaction pressure and sintering temperature exerts strong influence on the mechanical properties of HA [8].
Online since: December 2013
Authors: Jian Tong, Jian Bo Ji
Corrosion rate and Mechanical Properties of 316L Stainless Steel Wires in Different Corrosive Conditions Ji Jianbo1,a, Tong Jian2,b 1College of Mechanical Engineering, Xuzhou College of Industrial Technology, Xuzhou 221140,Jiangsu, China 2College of Mechanical Engineering, Yangtze University, Jingzhou 434023,Hubei, China ajijb@mail.xzcit.cn, btong_3jian@163.com Keywords: 316L stainless steel wire; corrosion rate; weight loss method; mechanical properties; fracture strength Abstract.
And test temperature factors on the corrosion rate of 316L stainless steel wires and mechanical properties of the most obvious effect.
Sun Shiqing et al. in hydrochloric acid corrosion of 316L stainless steel fibers were studied[2], but they did not specify 316L stainless steel wire corrosion law in Cl- environment and variation of material mechanical properties after corrosion, so this article in view of 316L stainless steel wires corrosion rate in different conditions and variation of mechanical properties after corrosion were studies, for 316L stainless steel wires applications and research provide test reference.
Fig.2 The relationship of test temperature and the average corrosion rate of 316L stainless steel wires By compared with different the concentrations of the mixed solution, different test temperature for the corrosion rate of 316L stainless steel wires, we can see that with the increase of the concentrations of the mixed solution, test temperature, the corrosion rate of 316L stainless steel wires increasing constantly, and all occurred a certain degree of passivation, among them test temperature factors become more obvious. 3.2 Analysis of 316L stainless steel wires mechanical properties As shown in Fig.3,the higher the concentrations of the mixed solution, the lower fracture strength of 316L stainless steel wires.
(3) Affecting the corrosion rate and fracture strength of factors, the temperature rise on corrosion of 316L stainless steel wires is more obvious.
Online since: November 2012
Authors: Qing Fu Li, Hao Fu, Wei Kang Gan
Introduction Non-quantification risk factors should be controlled at the construction site of the bridge, and the common non-quantification risk factors can be defined as the subjective controlled factors which can be influenced by human.
Therefore, it is very important to correctly understand the human error model during the bridge construction process and correctly analyze the reasons of the mistake caused by manual work, and which has great instruction to reveal the essence of the mistake caused by manual work and control the risk caused by manual work Factors Affecting Reliability of Manual Work.
In the cooperation work of the group, the individual will always show several properties including relative property, imitativeness, competitiveness and being complementary to each other.
The properties can improve the reliability of the personal and the work efficiency when managers are good at management, but if not, it may cause serious negative effect and reduce the reliability [6].
There are three main factors affecting risk of construction machine, which in includes human, state of machine and economical efficiency use of machine.
Online since: January 2013
Authors: Hong Chao Kou, Jin Shan Li, Mi Gong, Yu Song Yang, Guang Sheng Xu, Lian Zhou
The pore structures on mechanical properties of porous Ti were investigated by 3D finite element models.
Considering the intricate service-environment in-vitro, many factors should be taken into account, e.g. pore shape, pore size, porosity and interconnectivity to appraise the mechanical properties as load-bearing replacements.
Pore Shape Dependence of the Mechanical Properties.
Pore Distribution Dependence of the Mechanical Properties.
Eq. 2 was adopted to evaluate and compare the changes of mechanical properties between S500 and Scp.
Online since: January 2012
Authors: Chuan Sheng Wang, De Wei Zhang, Xian Kui Zeng, Hui Guang Bian
The Filling Factor Impact on Physical and Mechanical Properties of Vulcanized Rubber.
When the filling factor is 0.6, the physical and mechanical properties of the vulcanization are best then other effecters.
This is because when the filling factor is smaller value, the working volume of mixer is smaller too, which lead to the mixer can not get full use, reduce the shear and mixing functions to the rubber, short fiber and carbon black can not get full equably dispersed, and the top bolt can not fully play the role of pressure, result in the phenomenon of rubber skid and idling, affecting the macro-homogenization of the rubber, which lead to decrease physical and mechanical properties of vulcanized rubber.
The Polyester Short Fiber Addition Impact on Physical and Mechanical Properties of Vulcanized Rubber.
(2) The physical and mechanical properties of the vulcanized was increased, indicating the reinforcement effect of short fiber, when the filling factor is 0.60, polyester short fiber addition is 3,Physical and mechanical properties of vulcanized rubber achieve to the best value.
Online since: February 2013
Authors: Da Meng Liu, Yan Bin Yao, Jun Qian Li, Yi Dong Cai
Previous research showed that mechanical properties of coals are affected by petrographical composition, micro-and macro-fractures and anisotropy etc. [7].
In this paper, the influencing factors of the mechanical property (Young’s modulus) of anthracite coals were studied comprehensively including confining stress condition, water ratio, coal properties and compositions.
Research showed that moisture content is a significant factor influencing the mechanical property of coals [9].
Coal properties.
Coal properties including ash yield and fixed carbon content also affect the Young’s modulus of coals.
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