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The water vapor permeability (WVP) of the films was determined, as well as the mechanical properties.
And the composite films such as methylcellulose (MC)/stearic acids (SA) films took advantages of the functional properties of each component of the films to provide both barrier and mechanical properties [1,2].
Mechanical Properties.
Mechanical and Thermal Properties as a Function of Plasticizer Content.
Castell-Perez, Physical and mechanical properties of peanut protein films.

Currently, pre-strain and micro-alloying would be the two methods commonly used to improve the mechanical properties of Al-Mg alloys.
Liu et al. [14] found that Ce would also refine the grain size and improve the mechanical properties of Al alloy.
The refinement effect of rare earth elements would be the main factors for the ultimate tensile strength of Al alloys and the second phases would be harmful factor to the mechanical properties due to the net distribution around the boundary.
The distribution of second phases could explain the mechanical properties of the alloy.
Seidman, Microstructure and mechanical properties of a 5754 aluminum alloy modified by Sc and Zr additions, Mater.

The microstructure and mechanical properties of the four spring steels with different Si content treated by Q-I-Q-T process were studied by metallographic microscope, MTS, impact testing machine and X-ray stress analyzer.
When Si content reaches 2.1%, the comprehensive properties of 60Si2CrVA spring steel is the best.
Results and discussion Mechanical properties of four spring steels with different Si content.
The changes in the mechanical properties of four spring steels with different Si content are depicted in Figure 1.
The relevant literature reported that there are many factors will affect the stability of the retained austenite, such as the volume fraction of retained austenite, carbon content in retained austenite, the size and morphology of the retained austenite, distribution position, deformation temperature, stress state, technology for heating processing and so on, among them, the biggest impacts on the stability of retained austenite are the first three[11,12,13].

Some preliminary test of post-welding heat treatments (PWHTs) have been investigated to homogenize as far as possible the microstructure and the mechanical properties across the seams.
Their corrosion and mechanical resistance properties at high temperature are due to the excellent stability of their microstructure.
The stability of microstructure depends on two main factors: i) the low misfit of lattice parameter between γ and γ’ and ii) the reduced interface energy (20-30 mJ/m2) [3-6].
Therefore, superficial defects and cracks may occur, leading to progressive degradation of mechanical properties.
Feng, Effects of post-weld heat treatment on microstructure and mechanical properties of TLP bonded Inconel718 superalloy.

With long-term exposure to air conditions, the problems such as falling off and many kinds of cracks caused by environmental factors often turned up on the external surface, which resulted in the directly exposing to air conditions and the aging phenomenon of polystyrene panel, furthermore, caused the reduction of the insulating properties.
Conclusions The mechanical properties of fine aggregate concrete made from wet-sieving ordinary concrete were studied by experiment.
The mechanical properties of recomposed concrete mixed by the residual concrete stayed on the sieve with the ordinary concrete were also experimented.
The results show that the mechanical properties of recomposed concrete are almost the same as that of ordinary concrete.
[3] GB/T 50081-2002: Standard for Test Methods of Mechanical Properties of Ordinary Concrete (China Building Industry Press, 2002)

Nanomaterials have gained increased attention because of their improvement of mechanical properties of concrete.
Table (4) Measured mechanical properties of the control specimens Group Beam No.
These results clearly indicate that the dominant factors in mechanical enhancement are the percentage and type of nanoparticles, the hybrid addition of nanosilica and nanotitanium had a more substantial effect in mechanical enhancement of high strength concrete.
Table (4) summarises the experimental results of mechanical properties of the control specimens.
This different existed because of the distinct mechanical properties of nanomaterials, which gave the beams different flexural behavior.

MEMS Inertial Technology Research Center, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China awhatghosts@hotmail.com, belfevil007@126.com, capqiu@mail.njust.edu.cn, dxiaguoming@mail.njust.edu.cn Keywords: silicon resonant accelerometer, resonant frequency, temperature self-compensation Abstract: Temperature is one of the most important factors affecting the accuracy of micromechanical silicon resonant accelerometer (SRA).
The temperature fluctuation can cause changes in material properties, geometrical size and mechanical properties, which would affect the temperature coefficient of bias and scale factor of the SRA.
The results of self-compensated scale factors at different temperatures are shown in Table. 4 and Fig. 7.
For comparison, the uncompensated scale factors at different temperature are also illustrated in red line.
Fig. 7 Scale factor vs. temperature Table. 4 Scale factors of SRA in different temperatures Temperature (℃) scale factor of temperature self-compensated SRA（g/g） scale factor of uncompensated SRA（Hz/g） 0 1.000086 81.42 10 0.999895 82.07 20 0.999998 82.72 30 0.999754 83.38 40 0.999710 84.02 Conclusion The method of temperature self-compensation for SRA presented in this paper can realize the temperature compensation for bias and scale factor simultaneously with no need for the temperature sensor.

INTRODUCTION In recent years, bimaterials and composites have been widely used to satisfy the requirement for material properties of engineering structures [1].
Exponent p varies with material properties and geometrical condition.
Ordinate of figures shows absolute value of stress intensity factors 1K and 2K normalized by a �0 .
CONCLUSIONS For bonded dissimilar materials under mechanical loading, relation between stress intensity factors 1K , 2K and the intensity of free-edge stress singularity �K is examined numerically and theoretically.
Sih, Handbook of Stress Intensity Factors Vol. 1, Lehigh University, Pennsylvania, (1973) 15.

In this case, the microstructure and the mechanical properties in the weld metal and fusion zone could be affected too.
The mechanical properties of base metal are listed in table 2.
Through several times welding thermal cycle affecting, the previous microstructures become finer and more uniform.
Microstructure and mechanical properties are closely linked.
Microstructure and mechanical properties are closely linked.

Since the gelation process of silk fibroin was affected by many factors for example the concentration of silk fibroin protein, pH, temperature and cross-linking agent.
These factors also influence on the mechanical properties of the silk gel.
The natural protein polymer such as silk protein has gained more attention due to the strong protein conformation, the strong mechanical properties compare to other natural protein polymers.
Structure and Properties of Silk Hydrogels.
Structure and properties of silk fibroin-poly(vinyl alcohol) gel.