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Online since: June 2020
Authors: Yupiter H.P. Manurung, Dahia Andud, Salina Saidin
Thus the weld metal, which is intended to give acceptable properties with a slow cooling rate, may not be suitable at the HAZ for the faster cooling weld.
The chemical compositions and mechanical properties of this material are depicted in table 1 and 2.
Mechanical properties of S460G2+M steel [21] HSLA S460G2+M Thickness, t t<16 Yield strength (Ys) 460 MPa(min) Ultimate Tensile Strength (UTS) 540-700 MPa Ys/UTS Max.0.93 CVN (- 40°c) >60J transverse Elongation. % 17% Fatigue Specimen Preparation.
Muda, effect of welding heat input on microstructure and mechanical properties at coarse grain heat affected zone of abs grade a steel, ARPN Journal of Engineering and Applied Sciences. 10 (2015)
Taib (2018), Improvement of Mechanical Properties in HFMI/PIT Spot Welded Joint, Journal of Mechanical Engineering. 6 (2018) 239-247
Online since: August 2015
Authors: Bronislava Moravcová, Petr Pőssl, Petr Misák, Michal Blažek
The pore structure of concrete is a very important material property influencing the durability of concrete.
The relevant properties of the concrete components were monitored according to EN 196-6 [5], EN 933 [6] and EN 1097 [7].
In order to compare the methods, errors affecting the measurement must be eliminated.
[6] EN 933 Tests for geometrical properties of aggregates, ÚNMZ, 1999
[7] EN 1097 Tests for mechanical and physical properties of aggregates, ÚNMZ, 2011.
Online since: January 2007
Authors: Chong Xi Bao, Zhou Qiang Shen, Zheng Ping Shu
The processes of P/M affect the properties of sintered gears.
The different techniques of P/M lead to the different properties of sintered gears.
Consistent density generally leads to more consistent mechanical properties and more consistent dimensions after sintering.
Table 1 shows the properties of this material.
This processing offers the mechanical properties of a high-density part, the surface fatigue resistance of a wrought part, and potentially the low cost inherent to P/M processing(Fig. 9).
Online since: May 2013
Authors: Zulhelmi Ismail, Kamal Yusoh
The potential of PNC for future usage in engineering and commercial products has been strengthened by the advantages offered in mechanical, thermal, chemical and barrier properties of PNC.
-E.L., Chun-Gon Kim, The mechanical properties of MWNT/PMMA nanocomposites fabricated by modified injection molding.
Wilkie, Material properties of nanoclay PVC composites.
Factors influencing thermal stability and mechanisms of thermal stability improvement.
[17] Pralay Maiti, P.H.N., Masami Okamoto, Naoki Hasegawa, Arimitsu Usuki, Influence of Crystallization on Intercalation, Morphology, and Mechanical Properties of Polypropylene/Clay Nanocomposites.
Online since: February 2011
Authors: Dong Ying Ju, Xiao Hu Deng, Liwen Zhang
It provides a link for multiscale modeling to bridge the mesoscopic dislocation activities with the macroscopic mechanical properties.
However, the percentage of DRX is not only related to the thermo-mechanical parameters, but also influenced by the initial microstructure.
It is seen that the stable grain size with different initial grain sizes is almost the same under the same thermo-mechanical parameters.
The quantity of possible nucleation sites can be a key factor that controls the microstructure evolution of DRX.
Initial grain sizes affect the kinetics of DRX because of the change of grain boundary surface fractions for the nucleation of new grains.
Online since: September 2013
Authors: Azrriq Bin Zainul Abidin, Yupiter Hp Manurung
Forging also can produce part with good mechanical properties such as high strength to weight ratio, good toughness and resistance to impact at a moderate cost.
Although forging process offers a lot of advantages, defects can deteriorate the mechanical properties of the forged parts.
By using this method of analysis, forgers are able to visualize the internal material transformation and predicting the interactions between the material properties and forming process, material flow, form filling and defect formation [6].
The lubricant used is also important as this will affect the part surface finish and also the die wear.
As we can see in the result, this folds and laps appear as a result from incorrect forging parameters that could be from several factors which are: · A “flow by” which mean that the surface of the workpiece that are in contact with die surface is subsequently pulled away by the tensile stress component of the material and closes on itself
Online since: October 2014
Authors: Carmel Kealey, Anne Mulvihill, Damien Brady, Iska Schimpf, Malgorzata Poplawska, Clement L. Higginbotham
Furthermore this resulted in an apparent decrease in viscoelastic and mechanical properties of compositions, as well as in lowering their crosslinking density and compressive strength.
Various factors can influence the physicochemical properties of polymeric networks.
These findings indicate that hydrogel‘s swelling properties are affected by the chain length of the monomer and the water content in the pre-polymerization mixture.
Mechanical properties and thermal behaviour of PEGDMA hydrogels for potential bone regeneration application.
Modulating the mechanical properties of photopolymerized polyethylene glycol–polypropylene glycol hydrogels for bone regeneration.
Online since: August 2015
Authors: Aleksey Kharitonov, Olga Smirnova
The basic idea that lies in the proposed method is a use of the experimentally derived mathematical model for optimization in the form of the objective function describing the dependence of the parameters of physic-mechanical properties of restorative materials or the other optimization criteria from quantitative ratios of the mixture components.
The choice of the optimality criterion and the drafting of the objective function representing the dependence of the optimality criterion from the factors that affect the value of the objective function.
The parameters of the physico-mechanical properties of restorative materials, economic, technological as well as the other parameters can serve as criteria.
The experimental verification of physical and mechanical properties of the found composition of the mixture.
M., Szadurski E.M., Specialist «restoration mortars» for stone elements: a comparison of the physical properties of two stone repair materials, Heritage Science (2014), 2:1
Online since: June 2014
Authors: Wei Feng Zhang, Fu Xia Zhang, Li Yan
After replacing the spindle bearings, axis neck needs welding and mechanical processing before assembly.
The initial state analysis: According to the analysis of fracture surface, the crack source occurred in the brittle tissue zone of the surfacing thermal affected area. crack properties Simulation is semielliptical surface crack.
By using the Irwin formula combined with handbook, the maximum stress intensity factor of the position is.
According to the material properties of some materials such as 35CrMo, 45, 30CrMnSiA, 40Cr, etc., fracture toughness is [4].
Table 2 The test results of mechanical properties main mechanical properties σs σb δ Ψ HB standard value [3] ≥835MPa ≥980MPa ≥12% ≥45% ≤ 229 HB spindle 852 1000 13 48 220 2.2 Fatigue Analysis.
Online since: May 2012
Authors: Lian Wei Zhang
It is obvious that l affects the internal friction angle f. f is minimized when l=0, because the resistance reaches its minimum shearing along the deposition plane.
The safety factor of the slope is denoted by F.
The influence of k on safety factor F becomes more significant as f0 increases.
Plane strain strength and deformation of sands affected by batch variations and different apparatus types.
Anisotropy in mechanical properties and its simulation of sands sampled from natrual deposits.
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