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Online since: August 2017
Authors: Steven Y. Liang, Zhi Peng Pan
Among all the surface integrity properties, the residual stress profile is the dominating factor that influences the machined workpiece fatigue life [6, 7].
The material mechanical properties are also a strong function of the material microstructure states.
For example, the white layer formation in the machining process is reported to be a strong factor that influences the surface integrity properties [13].
The a phase has much superior material mechanical properties than the b phase.
[25] Lütjering, G., Influence of processing on microstructure and mechanical properties of (α+ β) titanium alloys.
Online since: August 2018
Authors: Zhong Zhou Yi, Zhi Peng Xie, Feng Rui Zhai, Min Lu, Ke Shan
The results show that the smaller grain size, the lower crystallization degree and the higher density and mechanical properties.
Moreover, these differences have important influence on the sintering, densification and mechanical properties of h-BN ceramics [3-11].
The fracture work of h-BN ceramics prepared by different submicron h-BN powder content Mechanical properties analysis.
Due to the lower density, pore was important factor affecting the mechanical properties of h-BN ceramics.
This is also one of the reasons for the decrease of density and mechanical properties.
Online since: May 2007
Authors: Shi Zhong Liu, Jia Rong Li, Hai Peng Jin
They were then tested using conventional mechanical tests at 1070°C/140MPa to determine the effects of exposure on stress rupture properties.
Introduction Nickel-based single crystal superalloys are predominately used as materials for turbine blades in aero-engines because of their excellent mechanical properties at elevated temperatures.
Microstructure instability of single crystal at elevated temperature during service causing γ' coarsening and formation of topologically close packed (TCP) phases can be a concern for second generation single crystal alloys, since the stress rupture properties can be adversely affected.
The coarsening of the γ' precipitates was observed to be the main factor in the degradation of the stress ruptures properties.
The coarsening of the γ' precipitates was observed to be the main factor in the degradation of the stress rupture properties.
Online since: January 2013
Authors: Dong Chao Liang, Min Shen, Yang Liu, Yan Li Duan
Its local inhomogeneity and interphase both affect the macroscopic properties of the composite.
The three-phase (matrix-interphase-fiber) model considering some different factors was developed to study the effects of interphase parameters on the mechanical properties of the composite.
Studying mechanical properties of natural short fiber reinforced composite has certain significance.
Only if all above factors are considered and appropriately characterized, a reasonable and effective numerical model can be obtained.
Simulation of the tensile behavior of the composite The global mechanical properties depend not only on the properties of constituents of the fiber and matrix, but also on processing means about interface and additives.
Online since: January 2021
Authors: Sami Kahla, Ahmed Kellai, Said Dehimi, Badreddine Babes
This allows us to say that thermal spraying did not cause a great change in the intrinsic mechanical properties of the ductile iron substrate.
Improves mechanical properties in particular ductility during tensile test.
Minak, Comparison of mechanical properties in compacted and spheroidal graphite irons, Tribol.
Walson, Aluminum-alloyed cast iron, properties and design, Trans.
Tchorz, Mechanical and Tribological Properties of HVOF-Sprayed (Cr3C2-NiCr+Ni) Composite Coating on Ductile Cast Iron, J.
Online since: February 2012
Authors: Guang Ming Wu, Yang Cao, Zhi Qian Zhang, Yan Ying Zhu, Yang Zhou, De Wen Gao
In some conditions, there will be a great deal of and larger grains on the surface of films because of small differences in deposition time, thus affecting the optical electrical, properties and limiting the application of CdSe films [10].
Electrochemical workstation (Corrtest) was used to test electrical properties. 3.
By analysis of the test results (Table 1) and calculating the absorbance and the very poor S of the various factors, pH value has been the biggest factors in poor, thus the main factors which affecting the CdSe film absorbance is the pH value.
Fig. 2 I-V curves of CdSe films 3.3 Surface morphology of CdSe thin films by AFM Fig.3 AFM imagine of CdSe films According to the main factors affecting the absorption is pH value, We changed the preparation of samples 3 PH, and tested their surface morphology.
Highly dispersed nanosilica-epoxy resins with enhanced mechanical properties, J.
Online since: October 2015
Authors: Qing Yang, Yu Jie Wang, Xin Qiu, Xiao Hua Luo, Shang Lin Xiao
Introduction Asphalt-aggregate interface is the decisive factor in asphalt concrete structures, which directly affects the performance of asphalt concrete, such as high temperature stability, water stability and structural strength, etc. [1].
Cohesive properties of the asphalt could according to the surface energy theory test to acquire.
Asphalt plays a role of binder in asphalt mixture, asphalt-aggregate bonding properties directly affect the life of asphalt mixtures.
And the changes of interface morphology depend on the factors of the volume fraction of asphalt and specimen molding time [12].
Therefore, developing a more reasonable test system, quantitative revealing the rule of asphalt-aggregate interface mechanical properties and establishing a more rational mesomechanics analysis model to predict asphalt macroscopic mechanical properties will undoubtly an urgent task in the industry.
Online since: December 2013
Authors: Nirun Witit-Anun, Sarayut Tunmee, Chanan Euaruksakul, Prayoon Songsiriritthigul, Pornwasa Wongpanya
Corrosion behaviors and mechanical properties of CrN film were evaluated.
The mechanical properties of the CrN coated samples were evaluated using nanohardness, ball on disk and scratch testers.
Mechanical properties of the CrN coated samples, i.e., nanohardness, elastic modulus, wear rate and adhesion property, were measured.
Mechanical Properties.
Both factors result in a brittleness of the CrN film.
Online since: February 2011
Authors: Hui Li, Yi Qiang Wu, Xin Gong Li, Fang Cheng
Composites; Mechanical Properties Abstract.
The , k, of each factor were calculated according to the tensile strength and impact strength, thereafter, the pictures of k plotted to factors and levels were drawn.
It can be seen from table2, table3, picture2 and picture3 that the important order of relevant factors that affect tensile strength and impact strength is: treatment temperature(C) > PA amount (A) >ultrasonic treatment time(B).
However, further prolonged ultrasonic pre- treatment time can exert negative effects on the modification, it is because too long a ultrasonic mechanical treatment time reduces the strength of fiber, leading to an inferior mechanical properties of composites.
Picture 2 Effects of factors and levels on the tensile strength indicates Picture 3 Effects of factors and levels on the impact strength indicates Conclusions PA was used to modify the fiber reclaimed from old newspaper under the condition of ultrasonic radiation and the treated fiber was mixed with PLA to get the composites, whose mechanical properties were tested later.
Online since: October 2014
Authors: Zhi Hua Wu, Su Li Xing, Qing Zheng, Zheng Shen, Jun Tang
It was observed that the chopped strand mats enhanced effectively the mechanical properties of the composite panels manufactured by Hand Lay-up method, while the mechanical properties of the composite panels manufactured by VIMP decreased.
The mechanical properties of composite highly depend on the properties of fibers and the manufacturing process.
The model was used in the analysis of the mechanism of toughening and the influence of some main factors, as well as in the prediction of the inter-laminar toughness increment ΔGIC.
Mechanical properties testing.
Compared with the mechanical properties of the composite panels manufactured by hand lay-up technique, the mechanical properties of those by VIMP were relatively better whether adding chopped strand mats or not, although the addition of chopped strand mats narrowed this gap of mechanical properties.
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