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Online since: July 2011
Authors: Wantanee Buggakupta
This work investigated a variation in mechanical properties of alumina as a presence of two types of dispersed phases: strontium hexaluminate and calcium hexaluminate.
These mechanisms can incorporate and promote superior mechanical properties.
Lower sintering temperatures could be possible when some sintering aids are used, which the chemical stability as well as mechanical properties could be affected form glassy phase at grain boundaries [3].
Vickers indentation and bending test was employed in order to evaluate mechanical properties of the composites.
The mechanical properties of the three-component alumina-based composites were presented in Fig.2, showing an existence of the hexaluminate phases mostly gave rise to all properties compared to the monolithic alumina.
Online since: September 2013
Authors: Li Lan Gao, Chun Qiu Zhang, Yan Bao, Hai Ying Liu, Qing Liu
Mechanical environment greatly affects the normal physiological phenomenon at cartilage[1], and abnormal mechanical state can cause the artificial cartilage degradation, degeneration, cracking or hardening at the junction, which will bring disaster to host cartilage.
In this paper, the model of articular cartilage defects was established for the first time and the mechanical properties of articular cartilage restoration area were investigated under compressive load by digital correlation technology.
Laboratory instruments and equipments Micro-mechanical properties of materials testing system contains CCD camera system, the tensile/compression loading device and digital image processing software.
Many other factors in restoration area such as the interface bonding, the shape of defect, the depth of defect and loading condition should be researched in the future.
The experiments reveal the mechanical behaviors of articular cartilage defect imposed compressive load, and it will help to improve the mechanical properties of artificial cartilage implanted and explore the suitable mechanical function indicators of artificial cartilage in implanting and restoring.
Online since: April 2021
Authors: Jian Qiu Zhang, Bin Bin He, Cong Zhou, Bi Zhang
The effect of the mechanical properties of Ti6Al4V on the onset of ASB is investigated based on the Johnson-Cook model.
The investigation reveals the main factors that affect the onset of ASB during the HSC process.
The temperature in the temperature term is affected by two major factors: (a) plastic deformation and heat transfer.
Table 1 Material properties of the JC model for Ti6Al4V [1].
Shastry, Material Factors in Adiabatic Shearing in Steels.
Online since: October 2014
Authors: Yu Jiao Wu, Chun Ping Yang
The Outdoor Aging Properties of Polypropylene / mica Composite Yujiao Wu1,a , Chunping Yang2,b 1Guizhou Institute of Technology 2Guizhou Academy of Analysis and Testing a958190452@qq.com,b315408098@qq.com Keywords: polypropylene, mica, outdoor aging, mechanical properties Abstract.
Using in the natural environment, plastic materials are affect by heat, oxygen, light, water and other factors, their properties are consistently decreasing and their using lives are shortening.
Natural aging properties testing.
Results and analysis Mechanical Properties.
Mechanical properties after natural aging (a) tensile strength (b) impact toughness Fig. 3 The relationship between mechanical properties of PP/mica composites and aging time Fig. 3 shows the relationship between mechanical properties of PP/mica composites and aging time, it can be seem that the mechanical properties trend of PP / mica composites mostly same as pure PP suggesting that the mechanism of the natural aging of pure PP and PP / mica composites are substantially the same.
Online since: October 2010
Authors: Fan Li, Ling Wang, Xue Yong Wang, Ming Jie Zhou
The bonding properties of post-installed bar in concrete are fundamental to evaluate the results of reinforced concrete.
Several investigations carried on the research on the influencing factors of post-installed bars bonding properties.
In this paper, in order to analysis some important factors to bonding properties of post-installed bar used structure adhesive anchorage in concrete distinctly, we carried on the post-installed bars structure adhesive anchorage performance test and researched the drawing failure mode of specimen of post-installed bar.
Test Method Based on ‘Plain concrete mechanical properties testing method’ (GB/T 50081-2002), pull-out test carried on 30t electrohydraulic servo universal tester made by SANS company and self-made loading reaction frame.
Factors affecting post-installed bar anchorage bonding strength In figure 1 it was given that the results of the ultimate pull-out force and ultimate shear stress variation tendency with concrete tensile strength.
Online since: February 2019
Authors: D.G. Lodkov, A.I. Romantsov, M.A. Fedorov
It is a process of interaction of thermal, mechanical and metallurgical properties and behaviors.
The cooling rates are determined, affecting the change in properties of HAZ of welded joints on pipe steel of strength class K52.
Because of the intense heating of the welding arc on the heat-strengthened metal of low-alloy high-strength steels in the zones of incomplete melting and overheating of the near-weld zone there is an intensive growth of austenitic grains affecting both the structure formation process and the mechanical properties of welded joints.
Temperature gradients and phase transformation in the solid state contribute to the change of thermal and mechanical properties of the material in the fusion zone and the HAZ [13, 14].
Ni, Investigation on microstructure and mechanical properties of NV E690 steel joint by laser-MIG hybrid welding, Materials and Design, (2017) 297-310
Online since: February 2016
Authors: Na Wang, Jian Zhou, Da Chuan Xie
In this paper, research developments and energy-saving influencing factors of vacuum glazing and BIPV were summarized.
Through analyzing the energy-saving test data of vacuum glazing and BIPV, the energy-saving influencing factors were given.
Most of these studies are about the effect of environment factors on the lifetime of PV module.
The energy-saving influencing factors Vacuum glazing.
Taking crystalline silicon and amorphous silicon as an example, the air temperature of module contact is the main affecting factor.
Online since: September 2016
Authors: Kittipong Kimapong, Pramote Poonayom, Voraya Wattanajitsiri
The main reason is that this steel shows sufficient mechanical properties such as high hardness, high ductility and high toughness.
Furthermore, the present of Ti, V, Mo, Cr, N or graphite in the electrode introduced to form the hard and strong phases such as Fe-Ti, Fe-V, Fe-Mo, TiCN/TiN or Fe-Cr-C in the weld metal was the factors for improving the mechanical property of the hardfacing weld metal [8,12-14].
Finally, the relation between the mechanical properties and the microstructure of the weld metal was also investigated and reported.
The proper weld layer that affected to decrease the dilution effect in the weld metal and improve the weld properties was about 3 layers.
The welded specimens were investigated for mechanical properties and microstructure of the weld metal.
Online since: October 2011
Authors: Li Qun Chen
Therefore, the choice of basic mechanical properties of masonry structure numerical simulation is as a research direction.
Figure 1 The axial compressive stress of masonry bricks and mortar under the stress The factors affects the performance of masonry Factors that affect the performance of masonry is more discussion of this issue with more comprehensiveness and representativeness of a Robert.
The program is using concrete block prism before cracking elastic analysis to study the elastic compression within the prism of different parameters on mechanical properties.
Robert thinks that the two high leather prism block is difficult to reflect the actual specimens within the masonry wall mechanical properties.
Mortar Properties (strength, deformation, mortar joint thickness).
Online since: May 2013
Authors: Gui Hua Yang, Jia Chuan Chen, Wei Wang
In this paper, effect of xylanase treatment on the drainge and physical properties of high yield pulp was studied.
But different enzymes on different pulp processing effects are not the same, while the factors of the amount of enzyme used, the treatment temperature, pulp consistency,processing time and PH on the enzyme also a great effect.
The main factors of affecting paper strength is the amount of enzyme, followed by temperature, PH, time and pulp consistency. 2.2 The impact on the optical properties of the pulp Figure 3 The impact of the optical properties From Figure 3 we can see, with the increase of the amount of enzyme, the brightness showed a trend of increased and then decreased.
“Characteristics and papermaking properties of the Triploid of Populus tomentosa,” China Pulp and Paper Industry 21(10), 17-21
“Timber characteristics and pulp properties of the triploid of Populus tomentosa,” Journal of Beijing Forestry University 5, 22-25
Showing 1981 to 1990 of 26166 items