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Online since: January 2022
Authors: Sara Ibn-Elhaj, Yakubu Aminu Dodo, Soumia Mounir, Khabbazi Abdelhamid, Youssef Maaloufa
For this purpose, the first step of this work is an identification of the chemical-physical properties of clay was done using the X-Ray method.
The work of Pellet and al.[8] illustrated the effect of water on the shear strength of rocks containing clay, results demonstrated that the mechanical properties of rocks decreased in the discontinuity between rock and clay.
This result observed was compared to literature with the behavior of concrete as the work of Mi Zeng Xiang and al. [9] in which authors studied the effect of curing humidity on the fracture properties of concrete and their results indicate that the mechanical properties of concrete decrease when the humidity increase and the concrete changes the behavior from ductile to brittle.
Plagge, A whole range hygric material model: Modelling liquid and vapour transport properties in porous media, Int.
An, Effect of curing humidity on the fracture properties of concrete, Constr.
Online since: January 2016
Authors: Daniel Makovička, Daniel Makovička
Its intensity and history are determined by the chemical properties of the explosive and its reaction with ambient environment.
c) The load affects the building structure (wall, floor, windows, etc.) continuously and regularly (in case of standard-size structures of residential or industrial buildings the local effect of concentrated load need not be considered).
The recommended static safety factor is 2.
In case of more complex accidents it is advisable to verify the physico-mechanical properties of glass by laboratory tests of samples.
Makovička, Jr.: Blast load of building structure, Mechanical Engineering, No 1, 21 (2014), pp. 11-18.
Online since: December 2012
Authors: Zhao Hui Deng, Qiao Ping Wu, Lin Lin Wan, Hao Tang, Wei Liu
Ren Yinghui established the grinding force mathematical model that is related to process parameters, material physical and mechanical properties on the basis of fracture mechanics.
Li: China Mechanical Engineering.
Wang: China Mechanical Engineering.
Mechanical Engineering.
Liu: China Mechanical Engineering.
Online since: January 2026
Authors: Nour Ibrahem Dawood, Sahar Naji, Zahraa AL Wahab
The mechanical properties and chemical composition of dental zirconia used in this study.
Material Manufacturer Chemical compositions Mechanical properties Zirconia Dental Ceramics, Aconia® Zirconia BSM-D 98×12 ST blank Chengdu Besmile Biotechnology CO., Ltd.
[7] Candido, L., et al., Mechanical and surface properties of monolithic zirconia.
-M., et al., Optical properties of translucent zirconia: A review of the literature.
[32] Jamali, M., et al., Comparative effects of glazing versus polishing on mechanical, optical, and surface properties of zirconia ceramics with different translucencies.
Online since: May 2011
Mechanical Properties: In the case of structural materials, strength, ductility, fracture and creep under static loading, deformation and properties under dynamic impact and cyclic loading are some of the most important mechanical properties.
Obviously, these mechanical properties of bulk NS materials should be known before their industrial applications.
Fatigue Properties: NC metals and alloys have many potential applications in cyclic loading condition.
Twenty papers from eleven countries were collected in this special topic volume and covered a wide range of issues related to mechanical properties and deformation mechanisms of bulk NS materials.
These papers provide basic and fundamental understanding and knowledge on the mechanical properties and deformation mechanisms of bulk NS materials.
Online since: June 2013
Authors: Xin Cheng Li, Zhi Ping Zhuang, Wei Xing Zhu, Long Sheng Yang, Jian Hua He, Tao Jiang
Effect of Finish Rolling Deformation Conditions on Microstructure Refinement of Ultra-deep Drawing Hot Rolled Steel Sheets Xincheng Li 1, a, Zhiping Zhuang 1,b, Weixing Zhu 2,c, Jianhua He 1,d ,Tao Jiang 1,e and Longsheng Yang 3,f 1 School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China 2 School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, Jiangsu, China 3 SG Group, Zhangjiagang, Jiangsu, China a444070923@qq.com, bzhuangzp12@163.com, czhuweixing@126.com, d714779957@qq.com, e894472046@qq.com, f675387407@qq.com Keywords: Finish Rolling, Deformation Conditions, Ultra-deep Drawing Steel, Hot Rolled Steel Sheets, Microstructure Refinement.
Introduction Recently,with the rapid development of Chinese automobile industry and the popularity of the family cars,automobile manufacturing enterprises have an increasing requirements on strengthening and toughening of steel sheets,especially for high-end automotive products.And only a few kinds of steels meet such requirements,such as high-quality ultra-deep drawing steel and high-strength steel, because these steels have excellent combination property and ultra-deep drawing properties which are affected by the fine grain structure.Finish rolling deformation parameters are the main factors to the structure refinement after the confirmation of chemical composition[1,2].
(a)Vol.1 Deformation rate of 5-10-20-20s-1,the grain size of 8.0 (b)Vol.7 Deformation rate of 1-5-10-10s-1,the grain size of 7.5 (c)Vol.8 Deformation rate of 1-1-5-5s-1,the grain size of 7.0 Fig. 3 Microstructure of tested steel sheets with different deformation rate Ultra-deep drawing steel was conducted above industrial test and the results show that deformation conditions of ultra-deep drawing steel hot rolled sheet in finish rolling were significantly affected the refinement of the microstructure such as deformation,deformation temperature, deformation rate.
Online since: October 2011
Authors: Dong Xiang Jiang, Ren Sheng Zhu, Zhen Zhen Zheng, Yong Mei Liu, Jian Shen, Yang Xiao, Jie Chen
The level of the tower design directly affects the performance of wind turbines.
Foreword There are many factors causing malfunction of the wind turbine.
In the same structural layout, the cabin matters by the centered mass whose property equals to the total mass and inertia moment.
[7] Lu Ping, Qin Huifang: Dynamic Analysis of Wind Turbine Tower on Finite Element Method.Chinese Journal of Mechanical Engineering,(2002),P53-60
Online since: July 2008
Authors: Andreas N. Alexandrou, Nicholas Constantinou, Georgios C. Georgiou
Alexandrou1,a , Nicholas Constantinou1 and Georgios Georgiou2,b 1 Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus 2 Department of Mathematics and Statistics, University of Cyprus, Nicosia, Cyprus a andalexa@ucy.ac.cy, bgeorgios@ucy.ac.cy Keywords: buildup; aging; coherency parameter; Herschel-Bulkley fluid; shear banding; shear rejuvenation; structural parameter; suspensions; thixotropy; yield stress Abstract.
The suspension is described by the Herschel-Bulkley model with time-dependent properties.
Since Re is a multiplying factor we only obtain results for 1Re = .
Apelian, "Transient Flow Characteristics and Properties of Semi-solid Aluminum Alloy A356," 8 th International Conference on SemiSolid Processing of Metals and Alloys, September 21-23, 2004.
(Ed.), Metal & Ceramic Matrix Composites: Processing Modeling & Mechanical Behavior, The Minerals, Metals and Materials Society, 337-350, (1990).
Online since: January 2022
Authors: Duong Thanh Qui, Evgenij Korolev, Alexandr Sergeevich Inozemtcev
Analyzing the influence of SAP on the mechanical properties of concrete at the age of 28 days was concluded that there is an unambiguously negative effect: the reduction in compressive strength by 8...35 % when hardening in condition with high humidity and up to 28 % under low humidity condition [13...15].
It will contribute to the reduction of shrinkage deformations and obtaining a composite with high-performance properties.
Materials and Methods In this paper, the influence of SAP solution on the processes of structure formation and properties of cement compositions is investigated.
Rheological properties of mixtures and mechanical properties of cement stone with SAP solution No Amount of acrylate part in SAP solution, W/ΣA Content of SAP solution in cement paste, ΣA/C, % Spread diameter, Dsp, mm Flexural strength, Rfl, MPa Compressive strength, Rcom, MPa 1. 0 0.00 192.8 7.18 70.4 2. 95 0.25 197.8 6.94 68.5 3. 47 0.50 201.5 6.85 70.7 4. 23 1.00 197.8 6.91 69.7 5. 18 1.25 198.0 7.00 71.7 6. 15 1.50 206.5 6.91 70.1 7. 11 2.00 199.5 8.70 70.8 Experimental statistical models were additionally obtained from the experimental data.
Duong, Physical and mechanical properties of cement stone with superabsorbent polyacrylate solutions, Magazine of Civil Engineering. 89 (2019) 179-186
Online since: October 2010
Authors: Wen Jie Fan
Introduction Acoustic loads and boundary layer turbulence are transformed into mechanical vibrations in the launch vehicle, which affect the spacecraft at its base[1].
Material properties of 3A21 Al alloy is showed in Table 1[3].
In order to reflect the real structural properties of these materials, a stress-concentration factor K must be included in the evaluation of the exponent b.
The sufficient safety factor can ensure safety for the environment.
Finally two ribs were added at each flange base for decreasing the stress concentration factor.
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