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Diamond-like carbon (DLC) films have being widely applied in various domains owing to their excellent optical and mechanical properties, chemical inertness and bio-compatibility[1,2].
In this paper, optical properties post irraditing by various laser energy were inverstigated.
However, the mechanism of laser-induced damage has not been entirely clear, as it is complex and associated with many factors.
In fact, many properties of films can be affected by laser irradiation, such as mechanical properties, surface morphology, microstructure and so on.
The optical properties before and after laser radiation were measured and compared.

Results and Discussion Ferroelectric Properties.
It was reported that the sintering temperature strongly affects the ferroelectric properties of the strontium bismuth tantalate ceramics [9,10].
Piezoelectric Properties.
The mechanical quality factor Qm is also listed.
Table 1 Electromechanical coupling factors (kij) and mechanical quality factors (Qm) of SxByT(x=0.8, y=0.2) ceramics compared with those of the other BLSFs.

Carbides play an important role in nickel-base superalloys, while their effects on mechanical properties are not clearly understood yet.
Therefore, the control of carbide precipitation in the appropriate amount, size, and shape may improve the mechanical properties of alloys [5-7].
However, the effects of the amount, size, and shape of carbides on the mechanical properties of this alloy are not known.
This investigation aims to explore the effects of carbide characteristics on the mechanical properties and fracture modes of the experiment alloys.
Stress rupture properties.

a*rolando@cicy.mx, bsakai@mech.saitama-u.ac.jp, cwakayama@tmu.ac.jp Keywords: Acoustic emission, Non-destructive technique, Mechanical properties, Damage behavior.
Different inherent factors on composite materials system affects its mechanical behavior.
When the chemical interactions fibers/HDPE are higher due to its surface functionality imparted by the treatments, the composites also exhibited enhanced mechanical properties (Fig. 6).
By increasing the adhesion strength in the fiber/matrix interfacial zone and improving the cohesion chemically through the silane treatment, an enhancement in the mechanical properties were observed and detected by AE.
AE signal identification and correlation are particularly complex to achieve in fiber reinforced composites, where, in addition to anisotropic behavior, a large variability in fiber geometry and properties is also existing.

Constant exposure to high-speed water flow can cause erosion on the surface of the blades, leading to material loss and reduced efficiency over time, while the leading edges of the blades are particularly susceptible to erosion due to the impact of waterborne particles, affecting blade shape and performance.
A third factor to consider is the compatibility of the filler material with the base material.
Chemical composition [%] and mechanical properties of steel X2Cr-Ni-MoN22-5-3 (1.4462): EN 10088-2008 %  Si % Mn % P % S % Cr % Mo % N % Ni % max 0.03 max 1.00 max 2.00 max 0.035 max 0.015 21,00 - 23,00 2,50 - 3,50 % 0,10 - 0,22 4,50 - 6,50 Proof Stress 450 Min MPa Tensile Strength 650 to 880 MPa Elongation A50 mm 25 Min % Hardness Brinell 270 Max HB The welding regime was set to the values presented in Table 3.
Chemical composition [%] and mechanical properties of steel X2CrNi24-12 (1.4332): EN 10213-2007 C Si Mn Ni P S Cr Mo V Cu max 0.06 max 1 max 1 3.5 - 5 max 0.035 max 0.025 12 - 13.5 max 0.7 max 0.08 max 0.3 Proof Stress 420 Min MPa Tensile Strength 740 to 920 MPa Elongation A50 mm 24 Min % Hardness Brinell 250 Max HB The corrosion test was conducted in the same conditions and the result showed a corroded area of about 38% of the total attacked surface (figure 4).
The most affected area is the leading edges of the blade.

Compared to quartz, it has higher electromechanical coupling factors(k2) because of its larger piezoelectric coefficients[5].
However, as far as we know, the theoretical studies for mechanical and optical properties of LGS crystal have not been reported yet.
So it has positive meaning to investigate its structural, mechanical, electronic and optical properties.
Fig.4 shows these SAW properties.
The SAW properties including propagation phase velocity, power flow angle, anisotropic factor, electromechanical coupling factor and temperature coefficient of frequency are calculated in an optimal region defined by Euler angle (90o,0o~20o,0o~180o).

Many perplexing factors affecting the grinding performance, various grinding effects produced under different conditions and different grinding parameters [2].
The major factors affect the removal rate and surface quality in belt grinding process: the granularity of abrasive belt, belt speed, abrasive type, workpiece speed, grinding depth, contact wheel hardness and surface shape and material [3].
Table 1 is the 3 levels and 3 factors orthogonal table.
Table 1 Factors and levels of orthogonal experimental design levels Factors A. belt speed (m/s) B. grinding depth (mm) C. belt granularity （#） 1 31 0.4 60 2 34 0.6 80 3 37 0.8 120 Using orthogonal table to do grinding test, test arrangement and results are shown in table 2.
Reference [1] Huang Hai-bo, Li Fan．Discovery the microstructure mechanism of mechanical properties in high, middle and low carbon steel[J]．Physical Testing and Chemical Analysis Part A: Physical Testing, 2006, 42(1): 15-18

This is caused by their excellent relationship weight/mechanical properties.
In this respect, composite materials give response to the requirements previously exposed, due to, principally, to the good existing relationship between its weight and its physicochemical, mainly mechanical, properties.
Carbon particles are very abrasive and they can affect negatively to the tool life.
Loss of coating provokes a decrease of the tool properties, originating decreasing surface quality decrease inside the holes, giving rise to form deviations and increasing the design deviation by delamination, Fig. 6.
International Journal of Mechanical Sciences 49. 983-988. 2007

Meanwhile, researchers have being taking a variety of measures including alloying, plastic deformation, heat treatment and rapid solidification processing to further improve the mechanical properties of magnesium alloys.
This demonstrated that reciprocating extrusion can improve the mechanical properties of magnesium alloys significantly.
Rapid solidified magnesium alloys processed by reciprocating extrusion possess more excellent mechanical properties.
Mechanism of improved fatigue behavior The mechanical properties of alloys are sensitive to their microstructures.
Factors which affect microstructures will influence strength, plasticity as well as fatigue behavior.

Study on the properties of sea sand concrete with fly ash Yi Jiang a, Junzhe Liu b ,Wu Sunc, Chaoyi Zhengd and Siyun Wu e The Architecture Engineering and Environment Faculty, Ningbo University, Ningbo 314211, China.
Research results show that: the sea sand concrete with 20% fly ash prepared has good mechanical properties and durability; the existence of Cl- on the early strength of sea sand concrete has a positive promoting role, but has negative effective on the later development.
Study on the mechanical properties of fiber reinforced reactive powder concrete [Master's thesis].Fuzhou University. 2009, PP:32-46 [5] Hangcheng Zhu.
Study on the properties of reactive powder concrete.
Experimental analysis of the effect of different steel fiber on the properties of RPC [J].