Search results

Based on the RC model, we analyze the relationship between the electrical model parameters and the influencing factors, and then get their theoretical formulas.
However, only a few researchers have researched the electrical properties of DEAPs.
The electrical properties of DEAP 2.1 The principle of DEAP generator The mechanical-to-electrical energy harvesting cycle in dielectric DEAP materials is shown in Fig. 1[7].
We denote the factor affected by the applied high voltage as parameter k
Equation (15) considers the factor of applied high voltage, reflected by the parameter k.

Furthermore, the affecting parameters of the beams such as length-depth ratio, axial compression ratio, boundary constraints and load conditions were discussed based on the analytical solution developed above, which were assumed subjected to the typical triangle impulsive loads.
Introduction Axially-loaded beam-type structural components can be found in almost all aerospace, civil, and mechanical systems.
When the have been known, the forced vibration can be obtained: Illustrative Example A forced vibration example is analyzed using the Spring&Mass&Elastic-Spring&Mass&Elastic beams under a uniform transverse triangle impulsive loading, assuming the following properties: ,,,,,(compressive axial load), , , ,.Analyze the following four cases: (a), ; (b) , ; (c) ,; (d) ,.
It is obvious that case (a) and case (b) have the same impulse and have almost the same curve, which suggest that the impulse is the decided factor when the last time is short.
In case (c), the maximum displacement appears in the first peak value then the amplitude of free vibration is some less, while the amplitude is almost equal the maximum displacement in case (d), which suggest the peak pressure and the last time become the fatal factors.

The paper focuses on the analysis of quality of welds on galvanized steel sheets and their corrosive properties.
Resistance spot welding is the main joint mode in car body manufacturing but it is also a complex process containing the thermoelectricity, metallurgy and many other coupling factors [4,5].
Therefore it is necessary to study the performance indices of the spot welded joint and determine the key influence factors.
The paper deals with the analysis of welds quality on galvanized steel sheets and their corrosive properties.
Tensile tests according to STN 05 1122 were used for the evaluation of mechanical properties of spot welds before and after the exposure to the corrosive environments on the test machine TIRA-test 2300.

Fiber content may be one of factors affecting thermal conductivity of fabrics [1].
Based on Figure 2, it shows that thermal conductivity on dry and wet are affecting each other [10-11].
Renner, Warm-cool feeling relative to tribological properties of fabrics.
Marmarali, Thermal comfort properties of some knitted structures, Fib.
Araújo, Moisture transmission through textiles Part I: processes involved in moisture transmission and the factors at play.

Battery size is also a limiting factor constrained by the application requirements.
In this paper we will consider two different designs of piezoelectric energy harvesters, with different size and electromechanical properties.
The performance of a piezoelectric harvester can be optimized by maximizing the generalized electromechanical coupling coefficient Γ and the mechanical quality factor QM.
A typical way to increase QM is to reduce the mechanical damping: adopting vacuum processing mechanical quality factors larger than 1000 can be obtained.
A problem seriously affecting piezoelectric energy harvesters is the energy loss on their parasitic capacitance CP.

In the present work, mechanical properties of the titanium alloy OCTGs in air and downhole corrosion media are reviewed.
Mechanical Properties of the Titanium Alloy OCTGs in Air.
Mechanical Properties of the titanium Alloy OCTGs in Downhole Corrosion Media.
Chen An et al. [41] investigated the mechanical properties of TC4 titanium alloy drill pipe under corrosive conditions.
The results showed that the tensile properties of TC4 titanium alloy decreased by no more than 10%, the impact properties changed by only 0.33% and the hardness decreased by 3.21% under the NaCl, H2S, CO2 and 205oC coupling environment, indicating that TC4 titanium alloy has excellent corrosion resistance and good comprehensive mechanical properties under corrosive conditions.

The results showed that both vacuum and non-vacuum packing affected the consistency of capsulated O. stamineus spray-dried powder during storage.
Thus, it is suggested to keep the encapsulated O. stamineus spray-dried powder under low temperature (10 ˚) with vacuum packaging to sustain the medicinal properties quality and to prolong the shelf-life of the encapsulated products.
Light, moisture, oxygen, mechanical damage and biological contamination are the mediums that deteriorate the potency of the product.
To maintain the quality of herbal spray-dried powder product, the important factors that should be considered during storage are the packaging conditions used, light intensity, relative humidity, oxygen and temperature [5].
Physicochemical properties of vacuum packed pink guava powder, Vol. 12 (October 2016) (2017), p.83–90 [4] C.

Analysis of variance (ANOVA) technique was used to find out the variables affecting the material removal rate.
The normalized factors are called coded factors.
In table 5 process factors are shown in terms of natural factors and their corresponding coded factors.
The parameters affecting the MRR were identified using ANOVA technique.
[6] Ting-Cheng Chang, Feng-Che Tsai, Jiuan-Hung Ke, Data mining and Taguchi method combination applied to the selection of discharge factors and the best interactive factor combination under multiple quality properties, Int J Adv Manuf Technol 31, 164–174, 2006

Torlerance design is one of the most important part in product development, which can affect the quality of product.
Steady quality design goal is to decide the level of the control factors set, make quality characteristics to achieve the ideal of function, not by the interference factors including the changes that have big quality characteristics variation, in other words, quality characteristics of interference factors for sensitivity to a minimum, or quality characteristics for interference factor is steady.
Steady quality design principle is to use the existence and the product or manufacturing system of two properties: (1) using quality characteristics and control factor of the nonlinear relationship to reduce the influence of internal interference factors. (2) using interference factor and the interaction between the control factors to reduce external disturbances or measuring interference factors.
Beijing: mechanical industry press, 1999.11.
Mechanical design and manufacturing, 2000.4.

The change of the mechanical properties of the soil in the seasonal frozen area under the actions of freezing-thawing cycles are studied in this paper.  
The engineering properties of the soil in seasonal frozen areas are affected by the change in soil microstructure.
Results and Discussion Mechanical properties evolution of the soil under the action of freezing-thawing cycles.
References [1] Han Bing, Study on mechanical properties of lime and ash modified subgrade silty soil in seasonally frozen area.
[26] Li Shun-qun, Gao Ling-xia, Chai Shou-xi, Significance and interaction of factors on mechanical properties of frozen soil, Rock and Soil Mechanics. 33(2012)1173-1177