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Online since: November 2012
Authors: Wei Xie, Shu Shan Li, Ya Nan Jin
Its physical and mechanical properties are shown in Table 1.
The physical properties of pebbles aggregate are shown in Table 4.
Table 1 Physical and mechanical properties of cement Test items Initial setting Final setting Compressive strength (MPa) Flexural strength (MPa) 3d 28d 3d 28d Test value 135min 195min 27.0 48.3 5.2 9.1 Table 2 Parameters of pebble concrete mixing ratio design in each cubic meter No.
Wu, Study impacts of aggregate for mechanical property of high performance concrete, Tongji University, Shanghai, 2001
Wu, et al, Effect of coarse aggregate type on mechanical properties of high-performance concrete, Cement and Concrete Research, 31 (2001) 1421-1425
Online since: September 2014
Authors: Ran Huang, Sung Ching Chen, Yu Pin Lai, Hui Mi Hsu, Li Wei Teng
The use of ground solar cells on the durability properties of cement-based composite was investigated.
As a result, we identified the factors affecting the durability for those of cement mortar specimens which predefined and made in lab.
The objective of this paper aims at the properties of alkali-activated materials in solar PV cells.
Test Specimens In order to investigate the influence of the fineness of solar PV panels on the mechanical properties and durability of cement-based composite, the cement was replaced with amorphous PV powders from discarded solar PV panels with a high proportion of silicon dioxide.
The use of ground solar cells on the durability properties of cement-based composite was investigated.
Online since: March 2021
Authors: Kashinath N. Patil, Vilas Gulabrao Dhore, Walmik S. Rathod
The mechanical properties of CNT reinforced composites are governed by factors like dispersion in the matrix, interfacial bonding and chemical stability between CNT and matrix. [7][8].
The mechanical and tribological properties of Al-CNT composites attributed to the uniform dispersion of CNTs in the matrix, the quantity and quality of CNTs used and the method of fabrication of composites[14].
Another factor affecting the coefficient of friction would be the hardness of the composite samples.
The self-lubricating property of MWCNT and improved hardness with increased MWCNTs were the contributing factors for the significant improvement in tribological properties.
Song, ‘Mechanical properties and microstructures of carbon nanotube-reinforced Al matrix composite fabricated by in situ chemical vapor deposition’, vol. 487, pp. 258–262, 2009
Online since: May 2014
Authors: Yun Qi You
The analysis of two-dimensional rotation and impact properties of volleyball serving benefits detailed force analysis during the process of hitting and serving.
In this paper, a method combining modeling and actual impact properties analysis is proposed and utilized to analyze two-dimensional rotation curve of volleyball.
Fig.1 A schematic diagram of the ball hitting The main factors affect ball spinning concludes the following areas: (1) Flight speed of volleyball: for the hitting of volleyball, the greater the strength of striking the ball, the faster flight speed of volleyball, if the flight of volleyball is in the same arc, the ball flight for a short time, i.e., the speed is faster.
(3) Rotation properties of volleyball: the volleyballs in different rotating condition after interacting with the ground, the arc produced is different.
The analysis of two-dimensional rotation and impact properties of volleyball serving benefits detailed force analysis during the process of hitting and serving.
Online since: January 2012
Authors: Ravi Ranjan Kumar, P. K. Ghosh
The base metal and weld metal were characterised in terms of their metallurgical, mechanical and fracture toughness properties by following ASTM procedures.
Pulse current gas metal arc welding (P-GMAW) is used more effectively without affecting the weld quality.
The weld joint has different microstructure namely dendrite, reheat refined region, heat affected zone and base metal, this has wide variation in mechanical and metallurgical properties of the weld joints.
The present study has been focused on the characterisation of weld joint of 20MnMoNi55 HSLA steel plate, in terms of its metallurgical, mechanical and fracture properties.
The mechanical properties and fracture mechanics of the base metal and weld deposit have been compared and correlated in reference to their microstructures and welding parameters. 2.
Online since: August 2013
Authors: Shun Wen Ji, Lei Jiang, Qi Huan Shi
Material properties, calculation models and parameters are the main factors affect the simulation results of concrete face rockfill dams.
It affects construction quality, durability, operation, and security of the projects[1-2].
By taking into account the influence of rockfill rheological property on stress-strain analysis and safety of CFRD, the constitutive model parameters were obtained by the triaxial test indoor proceed by Shen Zhujiang etc..
R., Back analysis of mechanical parameters of naturally graded rockfill materials based on large-scale loading plate tests, Chinese Journal of Geotechnical Engineering, 31 (6)(2009) 155-160
Online since: January 2013
Authors: Yu Hua Pang, Gui Zhi Xiao, Qing Juan Wang
Introduction PC steel bar has good comprehensive mechanical properties such as high strength, high toughness, low relaxation and excellent welding capacity.
Delayed fracture is the one of the largest factors that obstructs the strengthening of steels [3, 4].
The tempering temperature of samples is determined according to the hardness or mechanical properties of steel.
C Mn Si P S V A B C 0.31 0.30 0.32 1.20 1.21 1.18 0.65 0.63 0.63 0.013 0.015 0.010 0.009 0.01 0.012 0.011 0.025 Experimental results Microstructure and mechanical properties The steels were treated at different tempering temperatures to get different microstructures and mechanical properties.Vanadium forms the most stable compound among the microalloying elements V(C,N), with the high dissolution temperature.Fig.1 shows prior austenite grains an of tested steels under quenched condition.
The diffusivity and accumulation kinetics of hydrogen should be affected by the dispersion of vanadium carbide.
Online since: June 2025
Authors: Marek Kočiško, Martin Pollák, Jakub Kaščak, Peter Gabštur
· Materials – The choice of material significantly affects the strength and physical properties of the design.
This method was implemented in Creo Parametric 11.0.0.0 and verified using Finite Element Method (FEM) analysis. 3D printing creates parts that are heterogeneous in terms of mechanical properties.
These factors affect the strength and stiffness of the part in different directions, which increases the complexity of simulations using the FEM.
PLA is popular in additive manufacturing due to its simple printing process, eco-friendly properties, and sufficient mechanical characteristics for prototyping and some less demanding applications.
While this approach enables the creation of optimized design solutions, it often does not take into account all physical factors, such as dynamic loads and environmental influences that can affect the mechanical properties of materials.
Online since: May 2014
Authors: Chao Chang Arthur Chen, Shou Chih Cheng, Ming Hsien Chan, Wen Ching Hsu, Shih Lung Cheng
Design and Test of a Rapid Thermal Annealing Furnace for Improving Surface Properties of Silicon Brick in Multi-Wire Sawing Process Chao-Chang A.
The micro-Vickers (Akashi MVK-H1) and SEM (JSM-6500F, JOEL) instruments have been used to observe the improvement of rectified material properties of bulk silicon substrate.
Recent literature review shows that many factors may affect the efficiency and quality of sliced silicon wafer or substrates.
Some vibration and elasto-hydrodynamics effects of such piano wire also induce an unstable state during slicing the wafer substrate and then affecting the saw marks [2, 3].
Mechanical properties of bulk and thin film copper material under RTA environment can be observed and compared with variation of hardness [12].
Online since: October 2011
Authors: Hrushikesh Sarangi, K.S.R.K. Murthy, Debabrata Chakraborty
However, factors such as the local yielding, high strain gradients, and three dimensional state of stress at the crack tips and finite size of the gages strongly affected the development of strain gage techniques.
Theoretically, the straight line property will break for .
The geometric parameters and material properties used in numerical examples are shown in Fig. 3.
The material properties used in numerical examples are shown in Fig. 3.
Robi, “Determination of strain gage locations for accurate measurement of the opening mode stress intensity factors’’.
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