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Huang Xianguo et al. tested transverse amplitude and dynamic properties before and after strengthening to evaluate repair effect of XiaoTangHe Bridge on the SuHuang railway [2].Although a lot of researches about bridge strengthening detection have been demonstrated, it is still difficult to implement a long-term bridge health status monitoring, which is a necessary means to accurately evaluate the strengthening effect.
Where M is the dynamic bending moment, E is the concrete elastic modulus. q is the distance from Cross section of neutral axis to sensor. 3.3 The transverse vibration amplitude and frequency analysis The transverse vibration amplitude and frequency of the bridge are also important factors which affect the structure stability of the bridge.
Due to the dynamic load, both the load and speed of the train affect flexural plane.
Passive Fiber Bragg Grating Sensor for the Mechanical Vibration Monitoring Based on Cantilever Beam Tuning Technology, Acta Photonica Sinica,2003(9) [6] Ministry of Railways, The code for rating existing railway bridges[s], Beijing, China railway publishing house, 2004

Engineering Overview The construction control are the key for long span bridge to ensure the safety and stability in the process of construction[1-7].In history, some serious accidents with the loss of lives and money have happened because of the absence of effective controlling technologies in construction.As a unique arch bridge, Tongtai Bridge consists of oblique arch rib, curved beam and spatial inclining suspenders,which result in more complicated force properties for arch rib.In the absence of ready-made experience situation, the questions, as far as arch rib is concerned, involving how to make a construction plan, clarify critical points need to be controlled at every stage of construction, offer effective measures to ensure the safety during construction of arch rib and make the mechanical state as close as possible to design level must be researched and settled.
Fig. 2 Layout of Segments of Arch Rib[mm] Control of Alignment for Arch Rib during Installation Alignment of arch rib directly affects the distribution of stress.
(iii) Treatment to temperature influence.To reduce the difficulty settling the complex influence factor,the temperature doesn’t be taken as a separate case but as a correction term,and the period lifting and adjusting arch rib is chosen at night or in the morning before sunrise.
As a factor that it is difficult to be settled,temperature has a greater influence on the shape of arch rib during construction control.
Closure precision of arch rib directly affects the alignment and stress of the arch rib.

[2] F Monteverde, Progress in the fabrication of ultra-high-temperature ceramics: “in situ” synthesis, microstructure and properties of a reactive hot-pressed HfB2-SiC composite, Compos.
Yang, Microstructure, mechanical performance and oxidation mechanism of boride in situ composites, Compos.
Kingery, Factors affecting thermal stress resistance of ceramic materials, J.

Tables 1 and 2 show the mechanical properties and chemical composition, respectively.
Based on prior research, the FSW selected conditions that showed optimal mechanical properties.
Table 1 Mechanical properties.
Shot peening is a cold working process that alters the mechanical properties on the metal’s surface and creates a compressive residual stress layer.
Japan Society of Mechanical Engineers

The value of tangential adhesive stress is affected by the viscous medium pressure, viscosity and forming time.
Because of too many working procedure, it is difficult to control the forming quality, this method can't satisfy the increasing requirement of improving the properties of forming parts.
Taking advantage of the mechanical property and easily loading mode of viscous medium, the occurrence of tube buckling can be delayed and the wrinkling can even be removed in a certain extent during local tube-compression process by VPF, which increase the diameter reduction limit.
Experimental Study on Effect Factors of Viscous Adhesive Stress in Viscous Pressure Forming[J].
Experimental Research of Mechanical Property of Viscous Medium[D].

Introduction The unique mechanical properties of carbon fiber reinforced concrete have been widely recognized by people, but the difficulties in the preparation process still exist.
The study found that air oxidation can improve the carbon fiber composite mechanical properties significantly.
However, this method is more intense reaction, if the control of temperature or time is not appropriate, it will cause excessive oxidation, and seriously affect the mechanical properties of carbon fiber.
It could improve the negative factors of the carbon fiber surface.
According to the literature [3], oxidation temperature and time are the main factors of liquid oxidation.

On the basis of analyzing the �-potential of nanodiamond particles, the influence of chemical mechanical treatment (CMT) on the dispersion stability and infrared spectra of nanodiamond was studied.
But the existence of aggregates affects its characteristics as a kind of nano-scale particle.
When used for ultrafine polishing, (hard) aggregates cause nicks on the surface of workpiece which affect the roughness of finished workpiece.
The formation and properties of nanodiamond aggregates are very complicated.
This work aims at the factors affecting the �-potential of nanodiamond in order to get its disaggregation method.

However the existing test equipments generally can only simulate a single environment of high static fields or shaking load for testing and validating mechanical properties of structures and materials.
Some unknown factors make shakers with stable and high performances produce waveform distortion and instability, even difficult to work [4].
In return, these deformation and movement affect the control performance of shakers.
So hinged shaft is the core component affecting the control performance of shaker and safety of arm, and its stiffness and damping must be designed with calculation and analysis in practical construction of equipments.
High exciting force of shaker makes bucket deform and move, affect the control performance of centrifugal shaker.

Elastic properties relate to the tendency of a material to maintain its shape and not deform when a force is applied to it.
The density of a medium is the second factor that affects the wave velocity.
Thus, sound will travel at a slower rate in the denser object if they have the same elastic properties.
While the density of a medium also affects the wave velocity, the elastic properties have a greater influence on the wave velocity.
Tenoudji, “Mechanical properties of cement pastes and mortars at early ages,” Adv.

The conductivity of each component affects the thermal resistance.
The dimensions and the properties of each part of the package are shown in Table 1.
It is shown that the greatest temperature difference is in the lens which affect the heat disperses mostly, followed by PPA and the solder.
The conductivity of each component affects on the thermal resistance.
Chinese Mechanical Engineering Society 24th session of the National Symposium Proceedings (2007) [9] W.