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Online since: June 2015
Authors: V. Nisanth, R. Vignesh, A. Sabarish, K. Rajeshkannan, R. Arunkumar, K. Palanikumar, Ashwin Sailesh
Pongsathorn Kongkeaw et al fabricated bamboo-epoxy composites and tested for its mechanical properties.
It was reported that the tensile strength of the bamboo-epoxy composite material increases with increase in the fiber length without affecting the elongation at break of the composite [5].
Rajesh Ghosh et al fabricated Banana fiber reinforced Vinyl Ester resin composites and was tested for its mechanical properties.
These three factors were set at two levels.
These factors are called control factors.
Online since: December 2012
Authors: Xian Feng Shen, Wen Hua Teng, Wen Rong Huang, Chao Xu
The key factor affecting the penetration increase is the interaction between the assisted gas jet and the plasma.
The microhardness of welded joints can indirectly reflect their mechanical properties, and microhardness is mainly determined by the microstucture and grain size.
Another factor affecting the penetration increase of gas-jet-assisted keyhole laser welding is the shape and spatial distribution of the keyhole.
Many factors affect the spatial distribution of the keyhole, including the laser wavelength, focal spot size, laser power, welding speed, defocusing distance, and material parameters.
Properties of welded joint for narrow gap laser welding of austenitic stainless steels [A].
Online since: May 2007
Authors: Ke Sun, Yu Chen, Zhong Yu, Zhong Wen Lan
But the properties of magnetic levitation components and sensors are limited because of non-perfect property of magnetic material.
Simultaneously, in order to improve machining property of material, the ferrites must be assured of fine mechanical strength.
So it will inevitably affect density and mechanical strength of Mn-Zn ferrites to add NiO.
Accordingly the mechanical strength of ferrite is improved.
According to the Equation of Griffith-Irwin[9], σf = Kc/(π G) 1/2, (1) where σf is bending strength, Kc fracture toughness value and G grain size, porosity and grain size are two essential factors for sharply reducing strength of ferrite.
Online since: January 2021
Authors: Tohru Yamasaki, Eri Miura-Fujiwara, Naoki Nishimura
In this study, besides the fretting wear behavior of Ti-Nb alloys was investigated, the relationship between the microstructure and mechanical properties of the Nb-added Ti alloy was investigated, and the relationship between the composition and hardness on the fretting wear of the alloy will be clarified from the results of the wear volume and surface analysis of wear track.
Introduction Ti alloys have excellent mechanical properties, corrosion resistance, and biocompatibility; thus, they are used as an alternative material to hard tissue, such as artificial hip/knee joint, dental implant, bone plate, and so forth [1].
However, fretting wear is a complex phenomenon in which the sliding distance is as small as tens to hundreds of μm [2], and it is greatly affected by changes in factors such as the atmosphere and the combination of materials.
The relationship between the microstructure and mechanical properties of the Nb-added Ti alloy was investigated, and the relationship between the composition and hardness on the fretting wear of the alloy will be clarified from the results of the wear volume and surface analysis of wear track.
Ball-on-disk fretting wear tests were carried out for investigating the tribological properties.
Online since: June 2012
Authors: Hong Kui Jiang, Li Liu, Xian Chun Song
The effects of different types of working ceramic ball chains on the mechanical properties of the ball screw were studied and compared through multi-body dynamic simulation.
The result has shown that these factors affect the dynamic characteristic of ball screw dramatically, and the dynamic characteristic of ball screw at high speed is greatly different from that of ball screw made by chromium-molybdenum steel.
Zhang et al.[4] discussed the influence factors on impact force between steel ball and re-circulating mechanism-material properties, groove geometry of re-circulating mechanism and impact angle, etc for example.
(b) Impact model of steel ball and re-circulating mechanism Where is the normal deformation, and is the Hertz stiffness which depends on the material properties and contact geometry.
Jiang, “Research on the impact between balls and re-circulating mechanism in ball screw”, China Mechanical Engineering, 7(2008):pp. 850-853,881
Online since: August 2009
Authors: J.F. Chen, J.H. Cui, F. Li
CBN Slipstone Super-accurate Grinding Theoretical Analysis and Application J.F.Chen, J.H.Cui, F.Li Mechanical and Electrical Institute, Zhongyuan University of Technology, Henan, Zhengzhou 450007, China Keyword: super-accurate grinding, CBN, carding laura, slipstone characteristics Abstract: In this paper, the principle and impact factors for super-accurate grinding are analyzed and discussed.
The factors to affect the super-accurate grinding are discussed.
The properties of abrasive influence directly the machining accuracy of mechanical product and surface roughness.
CBN Grinding Fig.9 Metamorphic Layer Conclusions (1) In this paper, the principle and impact factors for super-accurate grinding are systematically analyzed and discussed
(3) Utilizing the principle and impact factors for super-accurate grinding, we design and manufacture a super-accurate grinder to grind the carding Laura slot surface
Online since: September 2013
Authors: Toshifumi Kakiuchi, Kyohei Kushihata, Mitsuhiro Kiyohara, Yukio Miyashita
Chemical composition and mechanical properties of the material used are shown in Table 1 and 2.
Table 2 Mechanical properties of exturede AZ61 used.
A Fig.8 Relationship between stress intensity factor range and crack growth rate.
Longer fatigue life observed in PL material might be due to the difference in the fatigue crack growth resistance affected by the processing layer.
Hosokai, Effect of Texture on Fatigue Properties of an Extruded AZ61 Magnesium Alloy Plate, Key Engineering Materials, 274-276(2004) pp.193-198.
Online since: August 2004
Authors: Jeong Pyo Kim, Bong Kook Bae, Chang Sung Seok
This degradation of mechanical properties is a susceptible factor that affects the safety operation of facilities.
The effect of aging on the mechanical properties of each specimen was investigated using a tensile test and a fracture toughness test.
Then it was compared with mechanical properties from resistivities.
For evaluating the mechanical properties such as tensile strength and fracture toughness of aged material, standard specimens were used.
Relation between material properties Fig. 9.
Online since: May 2020
Authors: L.V. Denisov, A.G. Boytsov, M.V. Siluyanova
Providing of Operational Properties for Gas-Turbine Engine Parts and Assemblies Using Electrospark Deposition L.V.
Carbon electrodes used to form functional properties of parts surface layer.
Titanium and its alloys have extremely low anti-friction properties and wear resistance.
The alloying electrode material plays a smaller role, affecting the formation of oxide and nitride phases, gas saturation of the metal, due to changes in the elemental composition of the doped layer.
One of the significant factors limiting the scope of ESA processes is the formation of tensile residual stresses, microcracks and other defects in the surface layer.
Online since: June 2017
Authors: Gui Rong Li, Hong Ming Wang, Fang Fang Wang, Jiang Feng Cheng
Microstructure and Mechanical Properties of TC4 Titanium Alloy Subjected to High Static Magnetic Field Li Guironga, Wang Fangfangb, Wang Hongmingc, Cheng Jiangfengd School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China aliguirong@ujs.edu.cn, bwangffonly@163.com, c1165079836@qq.com,d457913670@qq.com, Keywords: High static magnetic field, Titanium alloy, Mechanical properties, Microstructure.
The high magnetic field can put high energy into the atomic scale of the material without contact, which can directly influence the material internal atomic, molecular arrangement, matching, migration, thereby affecting the microstructure and mechanical properties of materials [1].
Tensile properties.
Tensile strength and elongation performance of the material are important mechanical properties of plastic deformation.
[5] X.N.Peng, H.Z.Guo, T.WAND, Z.K.Yao.Effects of β treatments on microstructures and mechanical properties of TC4-DT titanium alloy[J].
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