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Online since: February 2008
Authors: Xin Gui Zhou, Hai Jiao Yu, Jian Gao Yang, Ze Lan Huang, Bo Yun Huang
The mechanical properties were investigated using three-point bending test and single-edge notched beam test.
The mechanical properties of composites reinforced by carbon fibrous deposited with the SiC interlayers for 1hour (h) are proximately 7~10 times higher, demonstrating that the mechanical properties of composites can be increased through the fiber coating.
Thereby, it affects the mechanical properties of the composites.
It can be found in Table 1 that the mechanical properties of the composites with interlayers depend on the thickness of the interlayers.
The Cf/SiC composites with thicker CVD SiC interlayers therefore have inferior mechanical properties.
Online since: August 2013
Authors: Alessandra Bonicelli, Maurizio Crispino, Filippo Giustozzi, Melanie Shink
Laboratory analysis for investigating the impact of compaction on the properties of pervious concrete mixtures for road pavements.
Influence of compaction energy on mechanical and functional properties of pervious concrete mixtures.
However, additional information is needed about how pervious concrete properties change according to the compaction energy applied to the freshly mixed material and how the variation of percentage of same components of the mixture will affect the long-term behavior of the material.
Jiang, Experimental study on properties of pervious concrete pavement materials.
Wang, Effects of some factors on properties of porous pervious concrete, Journal of Building Materials 8 (2005) 513-519
Online since: January 2012
Authors: Chuan He, Si Jin Liu, Kun Feng, Jun Wang, Chun Qi
The bending stiffness of segmental joints is the key factor which affects the mechanical characteristics of shield tunnel.
INTRODUCTION The most important feature of shield tunnels is that the bending behavior of segmental joints will affect the mechanical properties of the whole tunnel [1-2].
It can clearly be seen that, the relationship between and M showed nonlinear properties.
The joint opening also showed nonlinear properties, and the greater the axial force was, the larger the bending moment was required to produce the same value of . 2.
KOIZUMI, Experimental studies and numerical analyses on the properties of a new type segment for gas pipeline shield tunnel.
Online since: May 2020
Authors: Sheng Ping Wen, Yu Sheng Ding, Hui Huang, Zuo-Ren Nie, Xiao Lan Wu, Bo Li, Kun Yuan Gao
To sum up, friction stir welding is a relatively complex thermodynamic process, and its hardness distribution is effected by many factors.
Texture and microstructure evolution and mechanical properties during friction stir welding of extruded aluminum billets.
Recent advances in friction stir welding/processing of aluminium alloys: microstructural evolution and mechanical properties.
The influence of multi-pass friction stir processing on the microstructural and mechanical properties of Aluminum Alloy 6082.
[9] Effects of tool sizes and welding parameters of F.C.Liu and Z.Y.Ma. on the structure and mechanical properties of friction stir welding of 6061-T651 aluminum alloy.
Online since: February 2013
Authors: Wei Zhang, Ke Fu Yao, Hong Yu Ding
Finally key factors for preparing wide Nb42Ni40Co18 amorphous alloy ribbon have been proposed.
Thermal properties of the samples were examined by a TA-Q600 differential Thermal Analysis (DTA) instrument and SII DSC-6300 differential scanning calorimeter (DSC) instrument under the protection of purified Ar gas.
During the fabrication process, many factors would affect the morphology and quality of the ribbons.
(1) Property of the alloy, such as the melting point, viscosity etc.
Conclusion The optimum overheat, nozzle dimension, distance between nozzle and the rolling wheel, injection time and so on were the key factors that affected the morphology and quality of the prepared amorphous ribbon of the Nb42Ni40Co18 alloy.
Online since: October 2010
Authors: Xiao Diao Huang, Qiu Lin Pu, Wen Zheng Ding
CNC machining performance is closely related to its dynamic performance, in particular feeding system dynamic performance is the impact on CNC machining precision and reliability are important factors.In this paper, a typical vertical lathe transformed to a CNC grinding machine ,its mechanical feeding system for dynamic performance analysis.
Based on ANSYS, using Block Lanczos modal extraction analyze ball screw feeding system in Figure.2, the process of analysis of the screw preload imposed , nut at the middle of screw.In the finite element modal of the process of the input material properties are: elastic modulus 210GPa , density, poisson's ratio of 0.3; radial stiffness of guide , damping; axial stiffness of screw , radial stiffness of screw ; axial stiffness of bearing , radial stiffness of bearing .
Table 1 Finite element analysis of the first six natural frequencies order Natural frequenc[Hz] order Natural frequenc[Hz] 1 29.68 4 198.45 2 46.66 5 230.23 3 70.00 6 259.36 (a) Natural frequency of 1 (b) Natural frequency of 5 Figure.4 The mode cloud of feed system Harmonic Response Analysis Feeding system is reflected in the modal properties of the system itself, to arrive at the actual working condition of the response, further harmonic analysis need to do.
By reference [1], ball screw feeding system’s axial stiffness is an important factor affecting dynamic performance, is also a weak link in the feeding system, it have the maximum amplitude of the system when applied dynamic load in the axial.Figure.5 is the harmonic response curve when applied sinusoidal amplitude axial load on the table.
Figure.5 Harmonic response curve of the feeding system Feeding system’s axial stiffness of machine tool has a great influence on the dynamic performance,which is related with the preload size on screw, location of nut.Figure.6 show the dynamic performance of these factors impact on the system.
Online since: July 2017
Authors: Gyung Jong Lee, Eun Ik Yang, So Yeong Choi, Yoon Suk Choi
The investigation and comparison on mechanical properties of the green shotcrete soil using the mineral additive are conducted.
Material Properties of Field Applied Vegetation Soil.
Mechanical Properties of Green Shotcrete Soil.
The properties of the green shotcrete soil were evaluated for 5 mixing types.
Garcı´a-Fayos, Factors Controlling Vegetation Establishment and Water Erosion on Motorway Slopes in Valencia, Spain, Restoration ecology: J.
Online since: December 2024
Authors: Hai Tao Wang, Yi Yang, Yu Zhang, Yue Xin, Ying Zhou
Influencing factors and level design.
There are great differences under different influencing factors.
(2) The primary and secondary order of factors affecting the compressive strength of iron tailings-fly ash base geopolymers is: curing temperature> iron tailings content> liquid-solid ratio.
Fresh properties, mechanical strength and microstructure of fly ash geopolymer paste reinforced with sawdust[J].
Experimental Study on Effect of Freeze-Thaw Cycle on Mechanical Properties of Recycled Concrete[D].
Online since: July 2015
Authors: Mohd Yussni Hashim, Mohd Halim Irwan Ibrahim, Azriszul Mohd Amin, Rosli Asmawi, Najwa Mustafa
Numerous researchers like Zu and Lin [7] in their work of debinding of injection moulded for optimum mechanical properties have shown that principal factors that affecting it, is solvent debinding temperature and thermal debinding atmosphere.
They founds that mold temperature, injection time and pressure are the significant factors that affect the green strength of the green sample.
The properties of the binder constituents are shown in Table 2.
The factors that are kept constant are shown in Table 3.
Lin, “Optimizing the mechanical properties of injection molded W-4 . 9 % Ni-2 . l % Fe in debinding,” vol. 6, pp. 1–6, 1996
Online since: May 2021
Authors: Mazlina Mustafa Kamal
Results showed that curing system applied significantly affected thermal stability property of the compounds.
Measurement of Cured Properties.
Results and Discussion Cure Properties.
Radhakrishnan, Cure characteristics and mechanical properties of styrene–butadiene rubber/acrylonitrile butadiene rubber, Materials Letter 59 (2005) 633-639
Natwichai, A Determination of the Mechanical Properties of Rubber by FT-NIR, Journal of Spectroscopy 2016 (2016)
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