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Online since: February 2013
Authors: Wen Jun Qi, Zheng Hua Huang, Jing Xu
Magnesium alloys generally exhibit relatively poor impact toughness [8-11], so it is also necessary to develop new magnesium alloys with high impact toughness by studying the internal affecting factors.
Tensile mechanical properties of (a) as-cast and (b) extruded ZK60-xHo alloys.
Solute with good segregation and effective nuclei are two essential factors.
Internal affecting factors mainly include the texture structure, grain size, second phase and impurity defects.
Li, Microstructure and mechanical properties of ZK60-Yb magnesium alloys, Mater.
Online since: February 2013
Authors: Mei Hui Jia, Tian Zhang, Cheng Tong Tang, Jian Hua Liu
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: December 2012
Authors: Mamidala Ramulu, Franna Pitt
Mechanical and Fatigue Properties of Titanium alloy SP 700 after Simulated Superplastic Forming Conditions Franna Pitt1, and Mamidala Ramulu 1, a 1Department of Mechanical Engineering, Box 352600, University of Washington, Seattle WA 98195 USA aemail: ramulum@uw.edu Keywords: Superplastic Forming, Static, Fatigue, SP 700, Ti 6Al-4V, Mechanical Properties Abstract.
In order to use this alloy in structural applications following superplastic forming, the mechanical properties need to be well understood.
Mechanical Properties.
Fig. 4 shows the all the mechanical properties of the SP700 simulated SPF conditioning and post processing.
Fig. 4, SP700 Mechanical Properties After Conditioning and Post Processing.
Online since: September 2020
Authors: Poonsub Threepopnatkul, Chanin Kulsetthanchalee, Kamonchanok Wongsuton, Chonlada Jaiaue, Nattanan Rakkietwinai, Amnard Stittatrakul
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: December 2012
Authors: Ming Jing Tu, Li Jun Wang, Jin Peng Yu, Yan Liu, Hui Chen, Gou Qing Gou
Morphology and mechanical properties of the coatings are analyzed.
The ration of fuel gas to oxygen is a significant factor affecting the properties of the thermal spray coating.
The results show that the main factors affecting the indentation crack propagation and fracture toughness are WC grain size, binder phase content and the performance of each phase, etc..
Thus the factor influencing the microstructure and mechanical properties is the kind of fuel gas.
The different combustion temperature of fuel gas results in varied melting degree of the powder, which is the main factor affecting the properties of the coating.
Online since: September 2014
Authors: Xiao Mei Nie, Yun Hao Bai, Le Zhou
With the lapse of time, the carrying capacity of early steel structure buildings which affected by various factors in the process of long service has dropped.
This paper introduces the characteristics and mechanical properties of axially loaded steel columns strengthened by welding under load and axially loaded steel columns strengthened by enclosed reinforced concrete under load according to the studies of steel columns reinforced under load at home and abroad.
According to the literature [3] the influence of initial load of original steel columns can be ignored, and the initial imperfection is a major factor affecting the carrying capacity of the steel columns reinforced by welding.
The main factor affected the bearing capacity of reinforced steel column is the initial defect.
Research on mechanical properties of steel structural members strengthened by welding steel plates while under load [D].
Online since: January 2012
Authors: Chuan Sheng Wang, Xian Kui Zeng, De Wei Zhang, 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: 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: Marize Varella de Oliveira, Antonella M. Rossi, Ieda Maria V. Caminha, Silvia R. A. Santos, Robson Pacheco Pereira, Magna Monteiro Schaerer
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 2012
Authors: Xiu Ying Yang, Qiang Qin, Yang Yang Cui
During the analysis, the properties of steel material must be defined firstly, which are the decisive factor affecting the carrying capacity of steel beam.
The mechanical and physical properties of steel at high temperatures were accessed accordance to the provisions of the European specification in analysis.
The finite element program ANSYS was used to analyze the constraints steel beam, which subjected to the uniformly line loads, then the steel beam was heated up continuously, and the mechanical properties and deformation of the steel beam was analyzed at different temperatures.
However, steel is not fire-resistant, although the steel is non-flammable materials, but the physical and mechanical properties changes greatly at high temperatures.
Computational Model To th3e steel beam, the mechanical properties and deformation affected by the high temperature were analyzed.
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