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At the same time the hair moment of inertia is of order O(d2), negatively affecting the resonance frequency (i.e. bandwidth).
For the crickets the hair-sockets provide some torsional damping (R) by visco-elastic material properties (see [12] for such material properties in spider hair mechano sensors) whereas for the artificial hair-sensors torsional damping is caused by both material as well as squeeze film damping due to the small gap between the siliconnitride plates and the substrate.
However, with respect to damping the optimum damping factors still need to be identified.
Using optical read-out it was possible to improve the detection limit by a factor of ≈ 25 times [13].
Tsukruk, Visco-elastic nanoscale properties of cuticle contribute to the high-pass properties of spider vibration receptor (Cupiennius salei Keys), J.

Based on the above considerations, the present work attempts to use MgO as binder for magnesium borate whisker (MBOw) perform, and investigate the effect of MgO coating on structures and properties of the whisker perform and composite.
As a result, high-strength perform is not prone to deformation and is favorable to prevent micro-crack generation during composite squeeze casting, which contributes to the improvements of properties and yield of as-prepared composites[4].
Additionally, MgO content can affect the maximum deformation resistance of correspongding.
Moreover, perform fabrication needs moderate whisker coating ratio because the structures and properties of as-prepared composites using squeeze casting method are influenced by many factors[5].
Though compression tests at room temperature were performed for estimation of perform relative strength in the present study, there is a great difference in stress state of composite between mechanical testing machine and actual fabrication by squeeze casting.

Application of a variety of software construct co-simulation environment, establishment of model of thin seam shearer cutting unit rigid-flexible coupling multimode system, do correctness verification to model from speed characteristics and mechanical properties.
Reflect the meshing harmonics of the force curve, the phase difference between the curves, in line with the characteristics of planetary transmission, the prototype model of the mechanical properties of the basic line with theoretical requirements.
Through comparative analysis, with the thickness and width size of inclusion increases, the force of the key part tends to poor, in both directions, the larger the size , the more the number of teeth in cutting, with the alternating cutting pick, coal mining generates great shock and impact, which is important factors of causing damage to key parts.
Table 4 The most value of the principal stress through planetary axis with different material properties and simulation Planetary shaft material Modulus（MP） Poisson's ratio （1） Density Allowable Stress（MP） Most value of principal stress（MP） A 2.06E5 0.3 7.84E-6 371.167 324.2628 B 2.09E5 0.28 7.85E-6 500.269 328.4077 C 2.08E5 0.236 7.87E-6 422.27 334.3918 Conclusion 1) Application of Pro / ENGINEER, MATLAB, ADAMS, ANSYS and NSOFT structural co-simulation environment, the establishment of the prototype model with thin seam shearer cutting unit rigid-flexible coupling, do correctness verification to model from speed characteristics and mechanical properties, and static simulation to get the ultimate convergence of the prototype system. 2) Load on the prototype model and simulate, get the stress distribution , the value principal stress, the value time and the corresponding Node of the flexible parts , identify the weak links of the key components .The value Node of the most flexible
Change the size parameters of iron sulfide inclusions, verify the reliability of the prototype model at the same traction speed, get the weak links of the prototype are the planetary axis. 4) Compared simulation to planetary axis given different material properties, analyze the simulation result and the force characteristic ,conclude the best material choice of planetary axis is material B.

Coal mine horizontal belt extension transfer machine is designed in order to solve the mine loading efficiency is not high; especially the most loading mechanical failed to solve continuous loading problem.
Through the study of tractor, summarizes the design methods for other similar mechanical similar provide a theory basis for the design.
First of all, wagon box auxiliary frame to motor and reducer device fixed; Secondly, the wagon box to open a vent, used to such as motor cooling; Third, the wagon box wall open a mouth, to drops raw coal which fell into the wagon box interior from the mouth, do not affect a tractor work.
Unit type and Material properties.
In addition, we need to enter the material properties, after look-up table we get Q235 steel attribute parameters are as follows: Density: Poisson's ratio: Elastic modulus: Mesh, Definition constraint and Load.

Multi-linear regression models describing the relationship between mechanical properties and ultrasonic parameters were proposed and found to be a reliable method for predicting the mechanical properties of fruits.
The hardness (mechanical properties) of fruit is an essential factor affecting the physical property related to storage, processing, and quality control.
Ultrasonic technique is very useful for nondestructive measurement of the mechanical properties of materials.
The relationships between ultrasonic parameters and mechanical properties of fruit samples were analyzed.
It can be concluded that ultrasonic parameters can be used for estimating the mechanical properties of fruits.

Particularly, the following requirements are imposed on non-active surgical implants and pedicle screws – they must have a set of mechanical properties (strength, crack resistance), a certain microgeometry of the surface in order to ensure a strong fastening of the screws, good survival in biological tissue, to exclude their breakage and deformation in the patient’s rehabilitation period.
The chemical properties of the screw material are also important, which can be proved by the absence of unwanted reactions with tissues, intertissue liquids; as well as biological properties (lack of response of the immune system, good osseointegration) [1, 2, 3, 4, 5].
Taking into account the factors determined as a result of the analysis of the screw designs, the drawings and the digital 3D model of the screw sample were developed in the Siemens NX CAD system.
When choosing cutting modes, the following factors were taken into account: the material of the machined parts – either titanium or titanium alloy, the brand of the tool material and protective coating, the type and concentration of lubricating and cooling technology media, and the processing method.
Batalov, Prospects of Using Titanium Implants with Predetermined Osteogenic Properties, Hir.

The air flow velocity at the rotor disc is[5] (1) Where is referred to as the axial induced factor.
In case of a wind turbine undergoing a periodic surge motion, in this paper expressed as (2) Thus, the effective air inflow velocity at the rotor disc: (3) 1.2 S.Øye dynamic inflow model In BEM theory, flow properties such as velocity and pressure at the rotor disc are determined by steady axial momentum equilibrium between air flow infinitely far upstream and downstream of the rotor disc.
More than 15 cycles of surge motion are completed before the end of simulation to ensure that all the start-up transient factors are eliminated.
However, when comes to the wind speed of 16m/s, each parameter is minimally affected by the surge motion.
“Mechanical characteristics of some deepwater floater designs for offshore wind turbines.”

For designing cavities in salt rock, the creep behaviour and, in particular, the volume convergence are two of the key factors placing restrictions on the depth and minimum allowable cavity pressure.
Many experimental investigations on mechanical properties, especially creep properties, of ‘‘pure’’ salt rock have been carried out3-5.
Although data on mechanical properties of the impure, composite layered or non-salt strata in bedded deposits are studied far less common than data on pure salt, different creep models have been proposed for salt rock6-8.
Up to now, The above studies tend to only care about the rock mass mechanical model and the relevant parameters.
It is the main factor that controls the gas pressure distribution and seepage of gas storage.

G2 * #Department of Mechanical Science, Karunya University, Coimbatore-641114, India 1deepak.peter11@gmail.com *Central Manufacturing Technology Institute, Tumkur Road, Bangalore-560022, India. 2ugrasen.g@gmail.com Keywords: Laser Dressing, Superabrasive Wheels, CBN.
Although mechanical dressing is an effective approach, it can also cause deep cracks and damage which may loosen grains causing the number of cutting edge to get reduced.
Further the dressing tool wear affect the wheel dressing process which alters the grinding wheel surface topography and the wheel performance decreased.
Heat Affected Zone (HAZ): In our work the grinding wheel surface is investigated to see whether the wheel surface is affected due to the heat generated during laser dressing.
Hirao Masatoshi, Izawa Masaki, Iguchi Nobuaki, Shirase Keiichi, Yasui Takeshi,” Water jet in process dressing (1st Report) dressing property and jet pressure”, Journal of Japan Society of Precision Engineering, 1998; 64(9), Pg.1335–1339.

Research on Cone Angle of Cutter Head for Big Diameter Shaft  with Analysis of  Drilling Mechanics Zhenhui Luana, Lianjie Caib Mechanical Engineering school, Anhui University of Science and Technology, Huainan China azhluan@aust.edu.cn, bchildjicy@163.com Keywords: cutter head; cone angle; slurry; cuttings Abstract.
The aspect of rock breaking Since the advent of rotary drilling, rock breaking mechanism basically hasn’t change, mainly relies on mechanical resilience to break the rock[3].
Furthermore, when exerting the role of the static and dynamic load, the changing tends of the crushing mechanism, morphology, and mechanical properties of the rock are similar[4].
On the one hand, it will waste a lot of power, on the other hand, it will affect the drilling speed.
Comprehensively consider all kinds of factors, the paper suggests to select α=35°~45°, that is β=90°~110°