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Online since: January 2010
Authors: Keiji Ueda, Shinichi Suzuki, Shinji Mitao, Nobuo Shikanai, Takayuki Ito
So far, the tensile strength of steel plates applied for building construction in Japan is typically up to 590MPa (440MPa in the yield strength), due to many restricting factors such as price and weldability.
Lab scale hot-rolling and mechanical properties Fig. 4 shows the schematic diagram of production conditions of lab scale plates.
Typical mechanical properties of the plates are shown in Table 3.
The obtained plates showed excellent mechanical properties, with yield strength over 650MPa, tensile strength over 780MPa, yield ratio under 80%, uniform elongation over 8% and Charpy impact energy over 70J at 0o C.
Hobbs, Structure and Properties of Dual-Phase Steels, Metallurgical Society of AIME, edited by R.A.
Online since: July 2013
Authors: Zuo Cheng Wang, Cai Nian Jing, Xiao Min Liu, Shao Yan Zhang, Jie Su, Fu Tao Han
Considering the effect of lubricating condition on properties, a hot rolling lubricant was used in the experiment.
The annealed Ti-IF steel sheets were cut and machined into the tensile specimens and mechanical properties of specimens were all measured through uniaxial tensile tests.
Results and Discussion Mechanical properties of ferritic hot-rolled Ti-IF steel sheets Table 2 shows the mechanical properties of experimental Ti-IF steel sheets and the corresponding ferritic hot-rolling parameters.
Table 2 Mechanical properties of Ti-IF steel sheets and corresponding ferritic hot-rolling parameters Sample No.
Studies [5-6] had confirmed that texture was the main factor that affected the r-value and deep drawability of IF steel sheets.
Online since: March 2008
Authors: Wei Li, Liu Zhu Chen, Peng Sha Pang
On the other hand, the hydroxyapatite (Ca10(PO4)6(OH)2, HA) is bioactive with hard tissues of human beings and exhibits osseoconductive properties.
So it can be estimated that the nucleation and growth of HA crystals are affected by two factors: the concentration fluctuation and diffusion assistance of Ca and P.
It indicates that the mechanical restrict force plays an important part for the bonding of HA and TiO2.
It may be explained by two factors.
When the surface roughness increases to some degree, the effect of mechanical restrict force can be neglected.
Online since: October 2011
Authors: G. Raja, K. Saravanan, S. Sivakumar
The position of the C=O stretching vibration is very sensitive to various factors such as the physical state, electronic effects by substituents, ring strains, etc. [24].
Consideration of these factors provides further information about the environment of the C=O group.
Ring vibrations: Several ring modes are affected by the substitution in the aromatic ring.
The electric dipoles may enhance, oppose or at least bring the dipoles out of the required net alignment necessary for NLO properties such as btotal values.
Refinement of the scaling factors applied in this study achieved a weighted RMS deviation of 9 cm-1 between the experimental and scaled frequencies.
Online since: January 2019
Authors: Lei Gang Wang, Yao Huang, Lei Liu, Xiang Ma
With dissimilar mechanical properties in elastic modulus and yield limits of the coated zinc layer to that of the substrate steel, the formability of galvanized steel sheets is more complex [4].
The mechanical properties of both zinc coating and the substrate are shown in Table 2.
Table 1 The chemical compositions of DC01 Elements C Mn S P others Content [wt%] ≤0.12 ≤0.60 ≤0.045 ≤0.045 ≥0.020 Table 2 Mechanical properties of sample Steel types Surface material Yield strength [MPa] Tensile strength [MPa] Ductility (original length 80mm) DC51D+Z DC01 Galvanized Base steel 270~310 <270 270~500 270~410 ≧22 ≧28 Experimental Results.
With dissimilar mechanical properties in elastic modulus and yield limits of the coated zinc layer to that of the substrate steel, the substrate and the coating undergo different deformations.
Liu, Recent development in study of effect of coating phase structure of IF galvannealed steel sheet on its properties, Iron and Steel, 37(12) (2002) 65-68
Online since: September 2021
Authors: Viktorija Volkova, Viktor Derevianko, Nataliia Kondratieva, Hanna Hryshko
By means of using these additives in an amount of 1-1.5% of the binder (by weight), you can adjust physical and mechanical properties of dry mixtures.
The essence of this method consists in changing factors of influence by introduction of ammonium salts, superplasticizers “Megalit”, “Sika” etc.
Study of the Process of Stabilization of Properties of Gypsum Binders.
Study of impact factors and the mechanism of gypsum binder hydration process in the presence of nanomodifiers.
Influence of nanomodifiers on physical and mechanical properties of gypsum binders.
Online since: February 2022
Authors: Alexey V. Ishkov, Vladimir N. Malikov, Viktor V. Ivanaisky, Marina V. Polkovnikova
Due to differences in the values of heat input and properties of electrode materials, surfacing processes have a specific effect on the properties of coatings [5-15].
It was found that the structure of such an alloy directly affects its mechanical properties.
The influence of the obtained microstructure on the mechanical properties of the substance was determined.
Zhang, Effect of Cu addition on the microstructure and mechanical properties of AlCoCrFeNiTi0.5 solid-solution alloy, Journal of Alloys and Compounds. 466(1-2) (2008) 201-204
Liu, ffect of the overlapping factor on the microstructure and mechanical properties of pulsed Nd:YAG laser welded Ti6Al4V sheets, Materials Characterization. 93 (2014) 136-149
Online since: August 2013
Authors: Dedi Priadi, Eddy S. Siradj, Harkali Setiyono, Andi M. Kadir
In conventional method, the strength design of steel structure is usually determined by using a safety factor where in design phase will influence its weight [3,4,5,8].
Futher analysis of of energy equilibrium between works done by virtual displacement of applied loads and energy dissipating in plastic hinges of the mechanism during deformation (Wext=U) will result in the expression of plastic load carrying capacity (Pp) as follows : Pp= -1+12+4(B1+B2)(C.A+C.A2)2(B1+B2) (8) C=2b[bC1+ 2bh + 4r +0,5tC2] , A=2σyt2C6C7 , a1=synt , A2= syt2D C3+C4e +0,5C5 , B1=C.Aa12 , B2=C.A21,5hpC2syC82 Experimental Approach The experimental approach was performed in two steps, which consisted of tensile test to assess mechanical properties of the basic material (Standard JIS Z 2201 No. 13A) and interaction of concentrated-compressive load and bending moment tests on 12 specimens of SHS beam.
D., “ Mechanical Behaviour of Material, Engineering Methods for Deformation , fracture, and Fatigue “, Prentice-Hall International Edition, USA, (1993)
[7] Harkali Setiyono, “An Alternative Approach to the Analytical Determination of the Moment Capacity of a Thin-Walled Channel Steel Section Beam”, International Journal of Mechanical Sciences,Vol. 50, August, (2008)
,“Some basic plastic mechanisms in the local buckling of thin-walled steel structures”, International Journal of Mechanical Sciences, Vol.23,No.12, pp. 703-713 (1981)
Online since: January 2010
Authors: Huan Qi Tao, Shuang Bao Ma
The point A is light generator, which is installed at the walls of the container and the wall perpendicular to the liquid surface; through the servo unit, the light source can be around the point A for 0°~ 90° angular displacement of rotation; the point B is the reflected light receiver focusing lens; the B'-A' is the imaging of x for displacement distance, it is in detection plane of the optical-electrical detector; detection plane is consisted of the CCD photoelectric conversion unit matrices, and with the vertical liquid surface; the point A and the point A' is in the same horizontal plane, the O-O' is the normal to the midpoint of liquid surface; According to the reflective properties of light,we can know that α is the initial incidence angle of light(beam) and that β is the tracking incidence angle of light after the liquid surface displacement; the C-C' and the E-E' is represented different locations of the liquid surface, for the vertical container, then there
From experimental research, after lens focusing, the light point projected onto the photovoltaic arrays just has a small displacement, the control of displacement measurement accuracy primarily is decided to tracking the angle and front distance a and back distance b; after lens focusing, the facula size of the receiver is also directly the important factors of affecting the measurement accuracy.
The different incidence angle of the light source will cause the change of laser spot, thus affecting the adjacent photosensitive devices to take place induction.
Systematic errors are generally the photosensitive device and liquid surface fluctuation and mechanical vibrations caused.
REGERENCES [1] Nondestructive Testing Branch of Chinese Mechanical Engineering Society: Ultrasonic Testing.
Online since: February 2007
Authors: Jian Dong Xing, Chong Gao Bao, En Ze Wang, Yi Min Gao
Introduction The failures of metal parts in industries like metallurgy, mining, electric power, cement areas mainly result from wearing, corrosion, oxidizing at high temperature and some parts suffer from dual effects of wearing and high temperature, which require not only enough hard phases for wearing resistance but also excellent mechanical properties and oxidizing resistance.
The effects of particles volume fraction, coating for particle and particle size on the high temperature wearing resistance for Al2O3/heat-resistance steel matrix composite material and high temperature crack behavior under different conditions were analyzed while provided effective data and experience for the composites with excellent comprehensive properties on both theory and practice.
Metal matrix with high strength sustains ceramic particles effectively for improving integer wear resistance property as forces transmission between the particles and the matrix during the working period for the composite material with required temperature comprehensive properties, while ZG40Cr25Ni20 alloy was choose as metal matrix material in the experiment with the same chemical composite and mechanical properties as the HK alloy [2].
(a) Metal matrix material; (b) Composite (Vc=52%); (c) Composite (Vc=39%); (d) Composite (Vc=18%) Results and Discussion The particle volume fraction in the composite material is one of important factors affected the properties.
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