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Online since: December 2012
Authors: Sina Alizadeh Ashrafi, Ali Davoudinejad, Abdolkarim Niazi
Aluminum alloys offer number of various interesting mechanical and thermal properties which classified them among most commonly used lightweight metallic materials.
In this study cutting speed and feed rate variations mostly affected surface roughness and tool life.
A Comparative Study on the Microstructures and Mechanical Properties of Al 6061 Alloy and the MMC Al 6061/TiB2/12p.
Met, Some factors affecting wear on cemented carbide tools, Inst.
[5] Joseph R.Davis et al, Properties and Selection: Nonferrous Alloys and Special-Purpose Materials,Volume 2,Metals Handbook ,10th Edition 1990
Online since: June 2011
Authors: Hai Feng Zhang, Xi Lian Wang, Rong Yan Chuai, Jia Lu Tang, Xiao Wei Liu
In this paper, we make a detail analysis of some factors, which affects the electrostatic bonding process.
According to the electrical properties of glass, combined with the principle of electrostatic bonding, we analysed the relationship of critical bonding time, voltage and temperature as well as the factors which affect electrostatic bonding.
It is often used with other methods, affording and protecting the microstructure or realizing the electric–connection between the mechanical structure and the electrical circuit.
Our laboratory is not a completely clean space, and it will be affected by dust particles ,etc.
Online since: October 2013
Authors: Hai Dong Yang, Xiao Jun Liu, Hu Zhang, Jun Sheng Zhang, Xi Quan Xia, Ming Hu Zhou
Tool B made with nanometer TiC powders was high mechanical properties compared with that of Tool A made with micron TiC powders.
The mechanical properties of the two kinds of cermet cutters are shown in Table 2.
So Ti(C, N)-based cermet cutters made with nano TiC original powers have the more excellent comprehensive mechanical properties, and their tool life is much more longer.
(2)The original powder particle size has a direct influence on the refinement of the cermet organization, thereby affecting the mechanical properties of the material.
Though the nano TiC original powders reduce the fracture toughness of the cermet, they improve the mechanical properties.
Online since: February 2011
Authors: Bo Zhao, Yu Qing Wang, Ming Zhang
Under this condition, the anti-resonance frequency declines more sharply, and the mechanical quality factor increases gradually, but the effective mechanical and electrical coupling coefficient reduces gradually.
With its excellent acoustic properties and physical characteristics of ultrasonic[1,2], the sandwich piezoelectric ultrasonic transducer is used in many areas, such as machining, aerospace, national defense, biomedicine, electronic equipment, etc.
In Fig.4, mechanical quality factor Qm increases with the increase of the front cover length l2.
Simultaneously, the increase of the mechanical quality factor indicates the reduction of work band width of the transducer, which may also be seen from the logarithm characteristic charts.
Under this condition, the anti-resonance frequency declines more sharply, and the mechanical quality factor increases gradually, but the effective mechanical and electrical coupling coefficient reduces gradually.
Online since: October 2014
Authors: Ina Pundienė, Irina Demidova-Buiziniene, A. Volochko
It was established that composite deflocculant consisting of sodium tripolyphosphate and PCE Castament FS 20 provides the best rheological properties of the cement matrix and affects the composition of the hydration products.
Such devices linings service conditions require using refractory castables (RC) that would have high resistance to mechanical factors as well as to slags and waste gas impact.
Traditional DF have only short-term impact on the RC paste rheological properties, but using higher amounts of DF is associated with negative effect on cement hydration process and significant deterioration of physical and mechanical properties of the RC.
The influence of composite DF on physical and mechanical properties of RC was studied.
This phenomenon contributes to strength properties increment.
Online since: October 2013
Authors: Miron Zapciu, Emil Udup, Claudiu Florinel Bîșu
The thermal effect is one of important factors that affect the performance of machine tool systems.
This coupling manifests itself in the thermal expansion of components and the change of mechanical properties due to heat flow through the mechanical parts.
It is well known that bearings operate temperature depends on the following factors: operating speeds, applied load, bearing arrangement, housing design, environment around the spindle and the lubricant properties.
These factors affect both heat generation and heat transfer.
Physical properties of water Physical properties Value Unit Density 997 kg/m3 Specific heat capacity 4181.7 J/kg*K Ref.
Online since: September 2022
Authors: Ch. Lakshmi Srinivas, N. Brahmaiah, P. Siva Kumar, P. Abhinash, N. Bharat Kumar, D. Vijay Praveen
Materials and Methods 2.1 Fabrication of composites AA-6082 has been chosen as a matrix alloy, and 35 micrometer-sized (avg.) 7.5% of alumina (Al2O3) and 2.5 % of MoS2 particles have been selected as reinforcements, owing to their superior physical and mechanical properties.
Later, the experiments were modeled according to ANOVA and Taguchi’s L18 (2^1×3^4) orthogonal array, to organize the parameters affecting the responses and their levels, using Minitab 19 software.
Factors and levels of the HMMCs Factors Notation No. of Levels Level Values Electrode type A 2 Zn-Br Br Wire Tension (N) B 3 6 7 8 Pulse On (µs) C 3 108 110 112 Pulse Off (µs) D 3 55 60 65 Peak Current (A) E 3 100 110 120 2.6 Analysis of Responses using Taguchi’s S/N Ratio Taguchi’s S/N Ratio measures how machining responses are affected by different noise conditions relative to its nominal value.
Results and Discussion 3.1 Mechanical Properties of the composites The mechanical properties of the composite were evaluated in our earlier studies and the basic properties of the composite under the present study are shown in the Table 3.
Mechanical properties of the composites S.No.
Online since: March 2006
Authors: Nak Sam Choi, Hoong Soo Yoon, Hyoung Gu Kim
However, effective mechanical properties of honeycomb core materials are altered in accordance with the loading direction because of orthotropic geometry.
Equivalent plate model adopted effective mechanical properties of the core layer calculated by theoretical prediction for FEA.
Material properties of the respective layers are listed in Table 1.
The thickness of adhesive layer was assumed 0.1mm Results and Discussion Table 2 shows effective mechanical properties of various honeycomb cores calculated by FEA and theoretical prediction.
A tensile test and its finite element simulation have been performed to analyze interlaminar stresses affecting the fracture behaviors of HSC plates.
Online since: August 2017
Authors: Qiu Hong Mu, Dan Peng, Feng Wang, Wei Ju, Fang Zhi Zhang
Results and Discussion Mechanical Property.
Mechanical Properties of POSS Hybrid Composites.
The distribution of POSS moieties in polymer matrices had a great effect on both thermal and mechanical properties of resultant composite systems.
But the distribution of POSS in matrix is one of the most critical factors on properties of composite.
Xiao, et al., Polyimide /POSS nano composites interfacial interaction, thermal properties and mechanical properties, Polym. 44(16) (2003) 4491-4499
Online since: March 2011
Authors: Jun Liang, Jun Luo
The gauge of between front and middle roller affects slub length deflection.
The precision of slub length affects fabric style formed by the slubby yarn directly.
Therefore the factors affecting output of the system are rigid of component, inertia of component and fraction of component between ,etc
The factor to decide slub length at the middle roller nip is fiction coefficient between fiber and roller, property of roving, count of roving and applied pressure of roller, etc.
The slub yarn parameter is as follows: twist factor is 422.2,yarn count is 28tex,slub length setting is 30 millimeter, slub space setting is 100 millimeter, slub scaling factor is 250%.
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