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Online since: April 2019
Authors: Supalak Manotham, Pichitchai Butnoi, Tawee Tunkasiri, Pharatree Jaita
Other physical and mechanical properties, i.e. density, porosity, shrinkage, Vickers (HV) and Knoop hardness (HK), and electrical properties were determined.
So, in this work, the concentration on the mechanical properties of was also discussed in details.
Physical, mechanical, and electrical properties of the La3+ modified BNKZT ceramics.
Trend of hardness values increased with decreasing porosity values which that value had important factor for mechanical properties of ceramics.
The addition of La was found to affect the mechanical and electrical properties of La3+ modified BNKZT ceramic.
Online since: February 2011
Authors: Arian Bahrinejad, Abolghasem Khazaeian, Hossein Khanjanzadeh, Hamidreza Pirayesh
The result of second stage of the study showed no meaningful difference between mechanical and physical properties of composite boards containing 10 percent of walnut and almond shell with reference one (board A).
Analyze of variance (ANOVA) was used to test for significant difference between factors and levels.
The result indicated that increasing press pressure and press time adversely affect the properties of the boards. 2.
The ratio of wood particles to walnut/almond shells, press time, and press pressure negatively affected the physical and mechanical properties of the panels while the increasing of press temperature improved the modulus of elasticity, modulus of rupture and internal bond strength. 5.
It was revealed that both physical and mechanical properties of the panels containing 10 percent walnut/almond shells regardless of shell mesh size was better than those produced from neat wood particles.6.
Online since: December 2013
Authors: Mohd M. Rashidi, Mohd Hasbullah Idris, Z. Shayfull
Mechanical properties test There were two conditions of tensile test were carried out.
Manganese formed carbide, Mn23C6, around the LTF region and affected the microstructure and mechanical properties of alloyed iron.
Mechanical properties The mechanical properties of the resulting alloyed obtained after several mechanical tests.
Effect of carbide phase on mechanical properties of alloyed iron.
The mechanical properties of modified DNR were found to be affected significantly by inoculation wt. %.
Online since: February 2018
Authors: Son Tung Pham
Sand production is a complicated physical process depending on rock mechanical properties and flow of fluid in the reservoir.
Parameters affecting sand production have been discussed for decades.
The criterion for sanding is: CBHP≥ 3σ1-σ2-U2-A-poA2-A (1) The model predicts the rate of sand production by utilizing the non-dimensionalized concepts of Loading Factor, LF (near-wellbore formation stress normalized by strength), Reynolds number (Re) and water production factor.
In addition, the study also gives detailed calculation steps for the two hydro–mechanical models.
Papanastasiou, Hydro-mechanical erosion models for sand production, Int.
Online since: July 2006
Authors: S. Syngellakis, Carl Perrin, P.A.S. Reed, M.S. Ali, Andrew J. Moffat
Microstructural factors affecting fatigue initiation in various Al based bearing alloys M.S.
For the assessment of mechanical properties (to be used in subsequent FE modelling), standard dog bone specimens obtained from individual layers of the roll bonded systems (provided as monolithic lining, inter- and steel layers) were tensile tested at a displacement rate of 5mm/minute using an Instron Electromechanical Tensile Testing Machine according to British Standards [5].
Mechanical properties of secondary particles Nanohardness tests performed on the lining layers of all current and previous systems showed that all secondary particles: Sn, Si and intermetallics had significantly different values of elastic modulus E and nanohardness (Hn) than the Al matrix.
Although the results are not perfectly reliable due to large experimental scatter; they give a clear indication of variation in mechanical properties.
Conclusions Small alterations in composition lead to significantly different secondary particle distributions that directly affect mechanical properties.
Online since: March 2009
Authors: D. Angeles Herrera, J.L. González Velázquez
In a previous work [10], the stress intensity factor in mode I (KI) of a non standard SEN curved specimen was calibrated by the compliance method.
The tables 1 and 2 show the chemical composition and the mechanical properties of the API steel pipe.
Mechanical properties at the different study zones Zone 2.0 [MPa] UTS [MPa] Area reduction [%] Deformation [%] Hardness [HRB] BM 271 411 62 35.5 89.8 DM 345 551 - - 92.8 HAZ 277 362 - - 84.4 The final dimensions of the non standard curved SEN specimens were: width 25.4 mm, thickness 25.4 mm. and length 127 mm.
"Fatigue life prediction of out-of-plane guesst welded joinst using strain energy density factor approach".
"Determinación del Factor de intensidad de esfuerzos en probetas en flexión en tres puntos con caras curvas".
Online since: November 2012
Authors: Jin Yao Li, Shi Jia Kong, Ming Yang, Jia Cong Chen
The Noise Test System and Solution Measures of Vibration Test Shijia Kong1, a , Jinyao Lin2,b , Ming Yang3,c , Jiacong Chen4,d 1 Room B120, No.25,Xinghua North Road,Daxing District,Beijing,China 2 Room B204, No.25,Xinghua North Road,Daxing District,Beijing,China 3 Room B120, No.25,Xinghua North Road,Daxing District,Beijing,China 4 Room B120, No.25,Xinghua North Road,Daxing District,Beijing,China amrkyouxiang@126.com, bjinyaoli@bigc.edu.cn cym2006come@163.com,d90236947@qq.com Keywords: Vibration test systems, Noise, Sensor part, Noise sources, Measures Abstract.The noise of the test system in the vibration test,is an important factor affecting the test results.This paper first introduce the classification of the sources of noise in the vibration test system,and explain the ways of noise interference and how to reduce the noise interference.Then given the specific measures to reduce the noise in the vibration test system,which can improve the precision and reliability of results
In the vibration test, many factors can affect the vibration test results, including the vibration test system which is an important factor in affecting the test results.
Electromagnetic field coupling sets interference refers to a circuit of the current change go through the magnetic pathways affects another a circuit.
References [1] M.Z,H.T.Zhou and P.L.Zhu:Mechanical Vibration and Noise(Science Press,China 2008)
[2] S.Y.Hu and H.J:Mechanical Vibration and Shock Testing Technology(Science Press,China 1983)
Online since: July 2018
Authors: Kuncoro Diharjo, Petrus Heru Sudargo, Sunarto Kaleg, Didik Djoko Susilo
Composite is material with low-density properties consisting of robust materials [1].
Hybrid composites have better properties compared with only one type of reinforcement.
Fiber hybridization allows the balance between mechanical properties and economic value of composite [4].
The addition of zirconate titanate content will decrease the mechanical properties of glass fiber.
The decrease in mechanical properties and natural frequency of composite materials results in an increase in the composite damping factor [9].
Online since: April 2014
Authors: Sheng Jie Di, Ming Yuan Wang, Wen Bo Du
The studies summarized were examined to determine the factors that most significantly affect group efficiency.
Selection table of reduction factors of Rfront and Rside can be shown as follows: Table.1.
Fig.3 Bending moments of front and back pile when the lateral loads along the Y-axis direction taking the pile-soil interaction behavior into the consideration Soil lateral resistance can be reduced by applying the deduction factors to analyze the mechanical properties of group piles.
The reduction factors are combined and we apply them to p-y curve for lateral analysis.
Then the deduction factors are applied to the soil reaction.
Online since: January 2021
Authors: Adam Grajcar, Krzysztof Radwański, Aleksandra Kozłowska, Aleksandra Janik
It indicates a progressive decrease of the significance of the TRIP effect and at the same time the growing importance of the thermally activated processes affecting a thermal stability of retained austenite.
They are very important factors.
The stability of γ phase is related to several factors including deformation temperature [2,3,6].
This additional temperature affects the intensity of TRIP effect.
Therefore, steels showing the TRIP effect should be designed for providing the optimal mechanical properties at specific deformation temperatures.
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