Search results

The present study investigates the effect of process parameters like tool rotational speed and tool feed on the mechanical and tribological properties of friction stir processed AZ31B magnesium alloy.
The experiments were conducted with 3 level 2 factors full factorial design with two replications.
However, the formability and the tribological properties of magnesium alloys are not significant [7, 8].
The responses were evaluated using ANOVA and the significant factor which affecting these properties were identified.
The experiments were conducted on the basis of 2 factors 3 levels full factorial design with two replications.

A special speckle microinterferometer has been developed to test the mechanical properties of thin films electroplated on the single crystal silicon wafer.
Test techniques, procedures and factors which affect on the deflection measurements are briefly presented along with detailed analyzes of the results.
Their performances highly affect the reliability of the devices.
However, the major difficulties encountered in studying the mechanical behavior of thin films is that the decrease in dimensions and sizes has challenged the traditional mechanical property testing with regard to both analytical method and test instrumentation.
In this paper, a speckle microinterferometer based on the stage of the Linnik system has been developed to full-field and real-time test the mechanical properties of micro-bridge samples electroplated on the single crystal silicon wafer.

The produced metallic materials have wide range of applications and are characterized by unique physical and mechanical properties.
The different factors affecting the rate of reduction such as temperature and ratio of doping materials are investigated.
The composition of these alloys is often a key element to control the mechanical, chemical and physical properties of the synthesized alloys.
The performance of sintering and reduction reactions in one step will produce metallic alloys with high mechanical properties.
Accordingly, the performance of sintering and reduction reactions in one step is needed to produce metallic alloys with specific magnetic, mechanical and electronic properties.

Experiment Research on Tensile-shear Behavior of Spot-welded Lap Joints of Ultra-high Strength Steel with Common Steel Xiang Lia*, Xiaoyang Lib, Huiping Yuc, Ya Li Mechanical and Electrical Dept of Beijing University of Technology, Beijing, China, 100124 a*lingda_lixiang@126.com, blixy@bjut.edu.cn, cyuhuiping@bjut.edu.cn Keywords: Ultra-high strength steel (UHSS), Common steel, Spot-welded, Mechanical properties Abstract.
Therefore, it is particularly important to do some relative research on ultra-high-strength steel and dissimilar materials’ welding properties.
Jie et al.[4,5] divided the metal around nugget into weld nugget zone and base metal by using local stress analysis methods and studied the nonlinear mechanical properties of spot-welding lap joint’s structure in the tensile and shear state.
Such deformation generated maybe because of the complex surrounding tissue components of the weld nugget and uneven material properties.
Secondly, the electric measurement detection values are determined by many factors such as varistors’ quality and the interference between the wires.

The simulated analysis of the mechanical properties is performed with easy-to-use probabilistic software known as “NESSUS”.
Polysilicon investigation endeavor based on mechanical properties has expanded within the past 10 years [2].
Analysis of mechanical properties is done by specialized, easy-to-use probabilistic software named as “NESSUS”. 2.
Many designers and analysts have brazened out numerous doubts and product variabilities by deeming a lot of manufacturing factors such as loads, boundary conditions, tolerances and material properties.
Kim, “Measurement of mechanical properties for MEMS materials," Measurement Science & Technology, 10 (1999) 706-16 [20] R.

The performance of airship envelope material has two aspects together including the mechanical properties of both fabric yarn bundles and composite laminated or coated properties.
Currently the related available studies mainly focus on macro-mechanical properties and material fatigue life of airship envelope under single environment affecting factors [6], and usually combined with the flight test or ground simulation environment measurement to test the mechanical characteristics of the airship envelope under the influence of complex space environment [7].
A method to simulate the mechanical properties is uniaxial and biaxial tensile test.
According to the results of a flexible material woven fiber Vectran, composite test data based on found trapezoidal method test data error is smaller, mainly because with using the trapezoidal method during the test, the sample is less disturbing factors affecting the tensile mechanical strength testing.
At present, there are some relevant test methods including reinforcing fibers for thermal aging skin material and mechanical properties, the Australian Defense Science and Technology Organization using differential scanning calorimeters(DSC) and thermo-mechanical mechanical analysis (TMA) study Kevlar49 high temperature properties of fiber bundles and Nomad fiber bundles, concurrent happens now when the high temperature 440 ℃ thermal degradation phenomena, and studied the fiber bundle under ultraviolet light and heat and the bending fatigue mechanical properties.

One of the major factors that limits the DE performance is premature electrical breakdown.
The one of the main factors that limits the DE performance is premature electrical breakdown.
Generally, PDMS and other silicone-based are often used as dielectric elastomer (DEs) formulation because of the beneficial of electro-mechanical properties.
They reported that the type of processing shown the improvements in the mechanical properties compared to the VHB that normally used.
Figure 2 Relative permittivity for various filler content for PDMS films Mechanical Properties and Breakdown Strength.

The researches of damping capacity on storage modulus , loss modulus and composite loss factor through microscopic and macroscopic analyses of mechanical properties, thermal stability and internal friction had proved the mechanism of damping capacity [5, 6, 7].
Mechanical properties of viscoelastic material under salt fog environment Time (d) Tensile strength (MPa) Elongation at break(%) Tear strength (N·mm-1) Hardness (Shore A) 0 1.31 939.99 5.58 18 30 0.93 904.2 4.76 13 60 0.88 824.76 4.21 11 90 0.79 768.79 3.88 11 120 0.72 774.25 3.53 9 Mechanical Properties.
The mechanical properties of viscoelastic material were shown in Table 1, after 0-120days under salt fog environment, the mechanical properties were deteriorated by aging time.
Combining with results of mechanical testing, the mechanical properties of viscoelastic material declined gradually, the tensile strength decreased 39.70% and the tear strength decreased 18.21%, which illustrated that the mechanical properties and composite loss factors of constrained damping structure had the same trend.
The results show that, the mechanical properties of viscoelastic material were significantly affected by salt fog.

The result of analysis using ANOVA is grains size factor, holding time, and compacting pressure has affected significantly to hardness of Aluminum/5% fly ash.
Aluminum has good properties such light-weight, corrosion resistant, good thermal conductivity, so it is a lot of used in automotive industry.
Literature References The research to be conducted on the influence of compaction pressure and sintering process holding time on temperature of physical and mechanical properties of aluminum alloy with the optimum fly ash reinforcement are relevant to the research results of previous studies.
References [1] Arik, H. and Chengiz, B., 2001, “Investigation of Influences of Pressing and Sintering Temperature on the Mechanical Properties of Al-AlC4O3 Composite Materials”, Turkish J.
[3] Ejiofor, J.U., dan Reddy R.G., 1997, “Development in the Processing and Properties of Particulate AL-Si Composites”, Journals JOM is Published of the minerals.

The recent development in FEA of mechanical behaviour of FSW joints is described with particular reference to two major factors that influence the performance of FSW joints: static behaviour and fatigue behaviour.
For most configurations, the local and global mechanical properties decrease as the thickness ratio increases.
Micro-tensile and indentation testing were applied by Rao et al. [21] to determine the local mechanical properties in a FSW joint.
The local stress-strain curves exhibited a drastic change at the advancing side due to a steep gradient of mechanical properties.
The mechanical properties were evaluated by means of tensile and fatigue tests at room temperature.