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Online since: October 2014
Authors: Ning Fan, Yang Bai, Yong Yu
Cutting properties of interpenetrating network composites are important to ensure machining quality.
Due to the continuous network structure, the INC has good mechanical properties and wide application in various engineering fields[1-5].
On the other hand, because of the non-homogeneous microstructure, the cutting properties of INC are different from the traditional materials in cutting process.
The machined surface quality and precision are also affected by its special properties.
For the purpose of improving manufacturing level, the cutting force properties of INC with double metal phases are researched by cutting experiments.
Online since: July 2022
Authors: Andrii Kondratiev, Anton Tsaritsynskyi, Oleksandr Dveirin, Tetyana Nabokina
The article presents the research carried out to determine the main parameters of elements of mechanical joints made of polymer composite materials, as factors affecting the requirements for precision of connection compliance estimation.
The research [14] theoretically justifies the factors affecting the compliance of the force connection formed by the fastener.
When choosing the factors affecting the fastener compliance, in addition to the geometry and material properties of the connection elements, the following factors have been considered: influence of the fastener bending and preloading; influence of the fastener fit in the hole and elongation of the hole under load.
The vast majority of researchers focus on improving the precision of compliance estimation and identifying the factors that significantly affect its degree.
Kondratiev, Elastic Properties of Steel-Cord Rubber Conveyor Belt, Exper.
Online since: November 2017
Authors: Martin Bystrianský, Josef Káňa, Ludmila Kučerová
The microstructures were analyzed by scanning electron microscopy and mechanical properties measured by tensile test.
Mechanical properties of TRIP steels are very interesting for industrial application, they possess relatively high strengths around 800-1000 MPa combined with total elongations around 30 % [3].
Mechanical properties were measured using tensile tests of flat mini-samples, with a gauge length of 5 mm.
The effect of the hold temperature on the final microstructure and the mechanical properties was investigated.
It was demonstrated that little changes in a single processing parameter of chosen thermo-mechanical processing method can produce wide spectrum of mechanical properties.
Online since: February 2011
Authors: Li Qiao, Hong Yan Guo, Song Ji, Hong Zhao, Suo Kui Tan, Xiao Ping Song
The Effect of Heat Treatment Temperature on Property and Structure of Ni Group Core-shell Particles ER Suokui TAN 1,2, a, Xiaoping SONG 2,b , li Qiao 1.c, Hongyan GUO 1,d, Song JI 1,e, Hong ZHAO 3,f 1Ningbo Branch of China Academy of Ordnance Science, Ningbo,China 2 Xi,an Jiaotong University,Xi,an China 3 Dalian University of Technology, Dalian, China atansuokui@126.com, bxpsong@mail.xjtu.edu.cn, cQiaoli040920@163.com , dnbguohongyan@163.com,ejisongnb@126.com,fzhaohong@dlut.edu.cn Key words:Electrorheological fluid, Morphology, Particle concentration Abstract:By means of mechanical properties test and microstructure graph observation,the relationship of heat treatment temperature of core-shell Ni/TiO2 group particles with mechanical properties under different electric field has been researched .It is found that the FT-IR,XRD morphology of heat treatment at350℃ is different from the one at100℃,the shear stress of same composition ER decreased with heat treatment temperature increasing
The heat treatment temperature of particles is one of most important of many factors affecting the ER property.
But the particle shows different structure and properties because of different modifier polar molecule giving different behaviour after heat treatment, and decides the properties of ER modified by Urea、SDBS、TEA and etc [3].
This paper focuses on the research of heat treatment temperature and structure, properties of electrorheological fluid under different electric fields. 1.
Conclusions The temperature of heat treatment of ER particles is very important factor on the structure and properties, Ni/TiO2/Urea particles would have heat treatment under 150℃, the higher of heat treatment temperature, the lower of ER property.
Online since: July 2011
Authors: Wen Xia Wang
The research on the tribological properties of C/C composites Wenxia Wang School of Mechanical & Electronic Engineering, Shanghai Second Polytechnic University, Shanghai 201209, P.R.
Results indicated that, the C/C composites show excellent mechanical and tribological properties.
When the volume fraction of CF reach 15vol%, the tensile properties increase greatly.
This means that the concentration of the inclusions is the main factor affecting the yield strength of a filled polymer.
Lim, High-speed tribological properties of some Al/SiCp composites: II.
Online since: May 2019
Authors: A. Maali, B. Rekioua, Salim Triaa, Fadhéla Otmane
The Halder-Wagner approach was adopted to determine the powder’s average grain size, internal strain, lattice parameters and the mixing factors.
Nanostructured materials adopt outstanding properties due to the surface and dimension effects.
Some electromagnetic properties can be tailored when the grain size is reduced to the Nanoscale [6, 7].
Fig. 2d displays the mixing factors evolution according to milling duration for the same peaks of the XRD spectra.
Accordingly, the obtained mixing factors are Gaussian profiles (variation around 0.94) which gives evidence to the domination of the residual microdeformations in the developed structural properties of the mechanically milled Fe powders and all the underlined observations confirm the effectiveness of mechanical milling for nanostruturing metallic powders [12, 13].
Online since: July 2012
Authors: Yin Chen, An Long, Rui Ge
In the automotive industry, the hot forming of high strength steels offers the possibility to obtain significant reduction of weight without affecting the structural performances of final products.
The work presented in this paper aims at accurately evaluate the effect of heating parameters on the properties of final sheet components produced in hot forming operations.
Although the high strength steel parts have superior mechanical properties, stamping operations become difficult due to the high strength.
So the mechanical properties will be improved.
It is obvious that high-temperature austenite microstructure (obtained as samples were heated rapidly) and grain refinement are the main factors to determine the mechanical properties of high strength steels.
Online since: November 2005
Authors: Taiju Shibata, Junya Sumita, Tatsuo Iyoku, Nobumasa Tsuji, Masahiro Ishihara
A two-dimensional C/C composite has great anisotropy in those properties in with- and across- fiber directions.
Table 1 shows typical material properties 2D-C/C composite of CX-270G grade (TOYO TANSO Co.), comparing with IG-110 graphite, fine-grained and isostatic-pressed isotropic graphite used in the HTTR core [5].
Although the 2D-C/C composite has high strength, it also has great anisotropy in thermo- mechanical properties in with- and across- fiber directions, as well-known.
The anisotropy of the thermal and mechanical properties was selected as a parameter.
The VIENUS code is in modification so as to treat the anisotropy of material properties of the 2D-C/C composite under neutron irradiation condition.
Online since: April 2012
Authors: Qing Hua Chen, Jing Wang, Xiao Pei Wu, Jia Chen
The influencing factors were analyzed via the orthogonal experiment L16(4,5).
b) Thickness of the sample and the influence factors.
Lactic acid and microwave heating have certain impact, possibly because of the synthetic effect between lactic acid and microwave impact on the KGM absorption ability, thereby affecting the volume of liquid membrane swelling, thus affecting the film thickness.
d) Mechanical properties of films.
The content of KGM has an effect on the tensile strength, which is the major mass fraction and forms the major contribution of mechanical properties.
Online since: August 2007
Authors: Dae Whan Kim, Chang Hee Han, Woo Seog Ryu
Introduction Austenitic stainless steel has good mechanical and corrosion properties at high temperature.
One of the metallurgical factors that affect hot cracking is delta ferrite in weldment.
If delta ferrite is too much, mechanical and corrosion properties are decreased[8].
Ferrite content and dislocation density in weldment were the important factors to affect fatigue life.
Ferrite and dislocation density in weldment are the important factors which affect fatigue life.
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