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Online since: March 2007
Authors: Ji Hyun Yoon, Bong Sang Lee, Eui Pak Yoon
The microstructural examinations were performed to relate key microstructural features to mechanical properties.
The prerequisite material parameters for LBB design are mechanical properties such as J-R fracture resistance and tensile strength at reactor operating temperature to demonstrate the flaw stability [1].
However, it has been observed that the mechanical properties of type 347 welds varied diversely heat by heat.
Tensile properties of type 347 welds.
To obtain a deeper understanding of the microstructual factors affecting fracture property of type 347weld, fractured J-R specimens were examined with SEM in conjunction with EDS.
Online since: September 2013
Authors: Bin Guo, Hao Tang, Pan Xin Li, Hai Tian Jiang
Starch content is an important parameter affecting starch plastics biodegradable performance, the higher starch content, the better performance of its degradation, while it also affects the mechanical strength and other properties.
Thermal properties.
Mechanical properties.
So the composition of the TPS/LDPE system is the key factors to determine the mechanical properties.
The tensile fracture surface figure TPS/LDPE shows that when the TPS content reached a certain level, it would cause the shifting between continuous phase and the dispersed phase, which affected the mechanical properties.
Online since: August 2011
Authors: Ho Chang, Yen Chen Chiu, Chou Wei Lan
Taipei 106, Taiwan 3 Department of Mechanical and Electrical Engineering, National Taipei University of Technology, 1 Sec.3 , Chung Hsiao E.
The friction force of pneumatic cylinder bore directly affects the output dynamic property of pneumatic cylinder motion.
As a result of these multiple factors, during operation, the pneumatic cylinder bore and the O-rings of sealing components are to be affected, Since relative motion is carried out, there are temperature change and mechanical property change caused by the surface profile, lubricating film, organizational structure and friction.
It was proved that the physical and chemical properties in terms of nanodimensions could provide more effective anti-wear and friction reduction natures than traditional additives [6-11].
On the design of measurement, it is required to clarify the complicated factors affecting measurement and propose a reasonable friction force analysis model for the testing platform in order to confirm whether the numerical values of measurement are correct or not.
Online since: July 2021
Authors: Roman E. Novikov, Aleksandr O. Taube, Ekaterina I. Storozheva
Influence of the Form Factor on the Results of the Fracture Process Modeling under Uniaxial Tension Aleksandr O.
However, at this stage of development, engineering software modeling systems based on FEM make it possible to consider the behavior of objects only at the macrolevel, without taking into account the features of the micromechanism of destruction due to the high complexity regarding to all influencing factors.
Materials and Methods To obtain experimental data on the mechanical properties, 3 types of specimens of carbon steel (0.02% C) of a single melt were tested on a tensile testing machine: cylindrical (fivefold, diameter D = 5mm, cut from a thick-walled pipe), pipe fragments (diameter D = 25mm, wall thickness S = 3mm, total length - 350mm, base length - 180) and segments (cut from the specified pipe, width a = 8mm, thickness S = 3mm, total length - 150mm, base length - 50mm), prepared in accordance with GOST 1497.
Experimental and calculated values of mechanical properties and measures.
By the totality of all factors, the results of modeling in Marc(cube) became the closest to the experiment.
Online since: March 2018
Authors: Andri Kusbiantoro, Mohd Mustafa Al Bakri Abdullah, Khairunisa Muthusamy, Nabilah Mamat, Norbaizurah Rahman
Measurement on fresh geopolymer properties was conducted with setting time and flowability tests, while degree of reaction tests was conducted on the hardened specimen.
Previous studies revealed many factors that contribute to the enhancement of mechanical behavior and durability properties of geopolymer, such as chemical oxide composition of aluminosilicate source, alkali activator, curing temperature, admixtures, and mix design.
Temuujin et al., (2009) investigated the effect of calcium compounds on the mechanical properties of fly ash geopolymer paste and discovered the enhancement of mechanical properties of fly ash based geopolymer with the inclusion of calcium compound (CaO) at room temperature [1].
To observe the effect of various curing temperature on the properties of geopolymer containing paper mill sludge ash, degree of reaction, compressive strength and porosity test were conducted on the hardened specimen.
Generally, characteristic of workability will depend on its viscosity properties.
Online since: October 2024
Authors: Lih Jiun Yu, Nai Yeen Gavin Lai, Ruey Shan Chen, Sia Yee Yang, Mouad A. Tarawneh
However, these rubber products can degrade due to various factors such as heat and light [3], which can affect their mechanical properties and performance.
In order to fill this knowledge gap, this research aims to investigate the effect of limonene on the mechanical properties and chemical decomposition of medical rubber.
Tensile properties, a) elongation at break and b) tensile strength.
It has enhanced the stability and mechanical properties of polymers [9].
This has led to improvement in elongation properties and potentially higher tensile strength.
Online since: March 2020
Authors: Veronika Blahnová, Jana Hlinkova, Radek Divin, Eva Filová, Evzen Amler, Karolína Vocetková
Growth factors belong among the basic tissue engineering tools.
Growth factors influence cell proliferation, differentiation, and maturation.
When extensive defects are formed, cartilage is not capable of full regeneration and ligamentous tissue with insufficient biomechanical properties develops.
The scaffold was shown to be biocompatible and biodegradable, allowing gradual growth factors release.
Mobasheri, “Mesenchymal stem cells: Identification, phenotypic characterization, biological properties and potential for regenerative medicine through biomaterial micro-engineering of their niche.,” Methods, Sep. 2015
Online since: September 2016
Authors: Xiao Hua He, Chang Yu Zhou, Jing Zhang
Because of the approaches of rolling, heat treatment, and so on, the materials' properties are different along each direction in practical engineering.
The metal properties of pressure equipment present orthotropic behavior due to the rolling approaches, heat treatment, and so on [2].
Kanak Kalita [10] found that the stress concentration factor of orthotropic plates with hole mainly depended on non-dimensional parameters of material properties compared with isotropic material.
Substituting the orthotropic mechanical properties into Eq. (1), the expression of Hill48 equivalent stress can be obtained as follows: σHill48 = √ 0.840σ2θ + 1.174σ2z − 1.028σzσθ. (3) Stress analysis of Titanium cylinders with nozzle.
Stress concentration factor for the structure of cylindrical shell with nozzle is affected by the interaction of elastic modulus ratio and thickness ratio.
Online since: October 2010
Authors: Daniele Paganelli, Mariano Paganelli
New development in the non contact optical measurement of thermo-mechanical properties of materials.
Abstract The optical measurement of thermo-mechanical properties allows the sample to be completely free from constraints.
The use of line cameras is unfeasible because the measurement will be strongly affected by edge imperfections.
The other key design factors are the increase of the green bulk density and the decrease of the fired bulk density, maintaining the overall physical and mechanical properties within the allowed range of water absorption and mechanical resistance.
Paganelli: “The properties of ceramic material during the firing process”, n. 55/2004 Ceramic World Review
Online since: May 2014
Authors: Duo Zeng, Da Feng Jin
To go a step further, the ideal global optimum doesn’t exist, since the manufacturing factors cannot always be considered thoroughly.
The material properties are , and .
Pareto Plot is a graph that shows the effect of a factor or set of factors on a response by plotting the relationship as determined by regression analysis of the data set.
After analysis, the factors affect maximum displacement in torsion and bending condition are and , respectively, and the factors affect the modal frequency and volume are and .
Analysis based on Pareto Plot is done to find the design variables affecting the responses most.
Showing 4731 to 4740 of 26166 items