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Online since: July 2013
Authors: Li Min Zhou, Cheng Yan, Ming Chao Wang, Dilini Galpaya, Zheng Bo Lai, Lin Ma, Ning Hu, Qiang Yuan, Ruixiang Bai
Pei et al. investigated the effect of functionalized groups on mechanical properties of graphene.
Some intrinsic or extrinsic factors, including chirality, structural defects, geometry sizes and substrate-interaction can greatly influence the morphology of graphene.
As confirmed by Zhao et al. [19], the possible model size effect on mechanical properties can be largely neglected when the diagonal length is over 5 nm.
Morphology of Graphene with Edge Functionalisation and Reconstruction For graphene nanoribbon (GNR), both edge functionalisation and reconstruction affect its electrical properties [27-29].
Geim, The electronic properties of graphene.
Online since: October 2007
Authors: Kenji Higashi, Hong Qiu Qu, Sachio Oki, Sung Wook Chung, Masato Tsujikawa, Tomotaka Hirata
However, as is well known, welded joints can exhibit poor fatigue properties.
The heat of friction and plastic flow from the rotating tool produce significant microstructural changes, which lead to a local variation in the mechanical properties of the weld.
This paper determines fatigue properties of FSW of the Al5083-O alloy with FSW condition with tool rotation: 500 rpm-100 mm/min, 800 rpm-100 mm/min and 800 rpm-200 mm/min, including fatigue limit, fatigue characteristic values and fatigue crack growth rates.
The microstructure of the welded joint is formally divided into four zones: base material (a), heat affected zone (HAZ) (d), thermo-mechanically affected zone (TMEZ) (b) and stirred zone (SZ) (c) [1].
References [1] Caizhi Zhou, Xinqi Yang and Gouhong Luan: Fatigue properties of friction stir welds in Al 5083 alloy.
Online since: January 2005
Authors: A. Jaworski, Sreeramamurthy Ankem
It has been shown that the creep resistance depends on a number of factors, including the shape of the component phases, the strength difference between the phases, and the stability of the beta phase.
The attractive properties of titanium and its alloys include its high strength to weight ratio, excellent corrosion resistance and biocompatibility.
It is hoped that mechanisms and magnitude of creep deformation can be predicted by considering the microstructure of the alloys, the properties of the component phases, as well as the interactions between the phases.
Ankem and Margolin have shown that interaction stresses in alpha-beta Widmanstätten alloys can affect the mechanical properties of an alloy beyond what simple laws of mixture would predict [16].
In order to fully understand and predict the creep properties of two phase alloys the mechanisms activated during creep deformation must be understood.
Online since: September 2024
Authors: Nishant Nathwani, Ajay Kawade, Satish Kumar Dewangan
Experimental Evaluation of Rheological Properties of Water-Based Drilling Fluid with Fly Ash Additive Dr.
Throughout the drilling process, it is necessary to precisely monitor, manage, and maintain parameters including density, flow properties or rheology, filtration, solid content, as well as chemical properties, at their pre-selected level.
The yield point factor is due to gelling.
b) Study the effect of temperature variation on rheological properties of drilling fluid.
The rheological properties of 10% of fly ash in a new base fluid hard the appropriate fluid properties that the plastic viscosity is approximately 1.897 Pa-sec, yield point 4.6 Pa at variable shear stress and 2.7 Pa at variable shear stress.
Online since: July 2022
Authors: Svetlana V. Samchenko, Olga V. Zemskova, Irina V. Kozlova, Marina O. Dudareva
That makes it possible to increase its physical, mechanical, organoleptic and other properties [3].
This makes a significant contribution to the energy of the system and affects a number of factors: melting point, solubility, shift in chemical equilibrium, etc. [5].
It causes deterioration of mechanical properties [8,11].
They allow in a wide range to vary the properties of the binder, depending on its purpose.
Our research has established that the stabilization of CNTs is provided by electrostatic, adsorption-solvation, and structural-mechanical factors [17].
Online since: March 2013
Authors: Jin Wei Shen, Guang Hui Li, Gui Cai Zhang, Yue Liang Liu
The structure and properties of the composite system are influenced by many factors, such as pH [7], ionic strength [8], polyelectrolyte molecular weight [9], temperature [10], etc.
When solid shows micro-deformation and liquid can flow freely, the composite system shows different mechanical properties from that of conventional solid and liquid.
This kind of mechanical properties lies between elastic solid and viscous liquid.
Even the weak force can change its property sometimes.
(2) Affects of Salt Content Changes in salt concentration can affect the configuration of polymer coils, which may contract their size and shield surface charges of microspheres and HPAM which weakens the interaction between microspheres and HPAM.
Online since: December 2013
Authors: C.H. Ko, M.J. Twu, P.C. Juan, H. Sekiguchi, C.H. Chou, K.C. Lin
However, Level 2 (10) -> Level 3 (15), the SNR increased thus leakage current is reduced.In other words, annealing temperature and dc power greater impact on the leakage current, these two factors are obvious impact factor (Significant Effect Factor); otherwise, argon-oxygen ratio has little effect on the leakage current non-significant factor (Insignificant Effect Factor).
Koda, “Crystal Structure and Ferroelectric Properties of Rare-earth Substituted BiFeO3 Thin Films”, Journal of Applied Physics, Vol.100, pp. 014106-014106-9, 2006
Dong, “Enhanced Multiferroic Properties of The High-valence Pr Doped BiFeO3 Thin Film”, Applied Physics Letters, Vol. 93, pp. 182909-1-3, 2008
Okamura, “Ferroelectric, Electrical and Magnetic Properties of Cr, Mn, Co, Ni, Cu Added Polycrystalline BiFeO3 Films”, Applied Physics Letters, Vol. 93, pp. 052901-1-3, 2008
Ozawa, “Improved Ferroelectric Properties in Multiferroic BiFeO3 Thin Films Through La and Nb Codoping”, Physical Review B, Vol. 77, pp. 092101-1-4, 2008
Online since: October 2010
Authors: Zhou Hua Jiang, Xin Geng
(b) (a) (c) a- dent marks or not full of ingots; b- double skin or bleed; c- ripples Fig. 2 Typical surface defects appeard in slab ingots Effect factors on surface quality of ingots Slag system (1) thinkness and uniformity of slag skin As the ingot and mold for relative movement, it is easy to produce slag pool temperature fluctuations in the frequent changes.
Such frequentn changes in temperature will adversely affect the thinkness and uniformity of slag skin, which requires is necessary to apply a slag system with appropriate low viscosity and good viscosity stability in the ESR Process for large slab.
(2) machanical properties of slag system As the ingot and mold for relative movement in the ESR Process for large slab, the slag skin bear the friction both the ingot and the mold wall.
The physical properties of industrial CaO-Al2O3-CaF2 system slag [J], Automatic Welding, 1967, 20(11):42. 7.
“Sdudy on high temperature mechanical properties of CaF2-CaO-MgO-Al2O3-SiO2 ESR slags,” Journal of Iron and Steel Research, 3 (1) (1991), 17-23. 8.
Online since: August 2013
Authors: Zi Lin Li, Jiang Xue, Hong Yi Ding, Yi Du
As its good mechanical properties, steel bridge has been widely used in modern highway, railway and urban bridge construction, but its corrosion protection is also a major issue.
However, these elements also affect the strength of steel.
It will not only cause economic loss, but also affect the normal operation of traffic.
The construction technology of the steel bridge anti-corrosion is an important factor for its corrosion resistance.
To improve the corrosion resistance of steel is greatly significant for the corrosion protection of the steel bridges, some trace elements affect the corrosion resistance and strength of steel, how to change the content of the trace elements to improve the performance of the steel, which requires us to do the next experiments.
Online since: April 2013
Authors: Khamlichi Abdellatif, Zineb Achegaf, Francisco Mata Cabrera
Mechanical properties of materials such as Young’s modulus yield and tensile strengths depend on temperature.
The effect of high temperature on mechanical properties is linked to some micro structural transformations of the material due to complex physical processes.
Fatigue properties are affected by temperature.
In practice, one should also consider variations of material properties due to temperature which will have their proper influence on TMF.
The effect due to material properties as they can be affected by temperature was not investigated.
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