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Aggarwal et al [6] revealed that hydrogen incorporation was the primary mechanism for the degradation of ferroelectric properties though oxygen was lost during forming gas annealing.
For example, their mechanical quality factors decreased drastically and their dielectric losses increased considerably.
But after annealing in air at 650 ºC for 30 min, the properties of the capacitors were restored.
In short, atomic hydrogen could induce transformation of PZT ceramics from insulator to semiconductor and have great influences on ferroelectric, piezoelectric, and dielectric properties of these ceramics.
However, little research was paid to the influences of these additives on the penetration properties of hydrogen into ferroelectric ceramics.

Establishment of multi body system The all component s in the transmission module are connected into the mechanical system through the corresponding Kinematical pair or other ways, and the mechanical system is called multi body system.
The material properties of the parts: the material in the bearing, the axis, the transmission shaft, the shaft of the motor, the shaft of the belt wheel is steel, and its density is 7800Kg/m3; the material of the belt wheel is aluminum, and its density is 2700 Kg/m3.
Angular speed of Belt wheel shaft Conclusion LED placement machine belongs to the optical electromechanical equipment with the high precision and high speed, its drive form are the key factors that affect the final performance of the equipment.

Factors of the Evaluation Involved The Design Phase.
Such as the heat transfer characteristics of building materials, sealing properties, strength properties and durability properties.
Then we come to the results for construction, because it is affected by the design stage, so there are not many evaluation factors in this stage.
The evaluation factors it related mainly include the impact on the environment in the construction process and correspondence degree of the construction results with design.
Evaluation factors including pollution degree and energy consumption, of building, also give consideration to the conform degree of materials purchase and use with design.

The decreasing mechanical properties have been occurred due to delamination failure during the drilling process.
However, it would influence a negative impact on the mechanical properties of composite materials.
In addition, the mechanical properties of composite materials can be maintained as needed.
The conclusion is a hybrid composite material drilling is unique because there are two or more material properties so that lubrication is needed to maintain the mechanical properties of the composite.
Subagia, I.A., Kim Y., A study on flexural properties of carbon-basalt/epoxy hybrid composites, Journal of Mechanical Science and Technology, 27(4), (2013) 987-92

Introduction During the gear drive process, the contact force that the tooth cyclical meshing and collision generate is related to gear running smoothly, shock and vibration, fatigue wear, contact strength and service life performance and other significant properties, as well as provides a reference for the design of the gear transmission system.
So the contact force of involutes gear calculation is also affected.
According to the Hertz static elastic contact theory for the non-elastic contact, establishing the mechanical model[3-4].
As a result of gear manufacturing errors, installation error, friction and lubrication conditions and other factors, the phenomenon of the fluctuation within a certain range is allowed.
The stress analysis and motion simulation based on Solid Works [J] Mechanical Design and Manufacturing, 2008(1): 92-94

If ignore other secondary factors, the fault diagnosis process has a clear definition domain, data range, and relationship, The basic structure of the proposed fault diagnosis process is generally composed of four parts: fault phenomenon, fault cause and fault position, and fault solution.
A stands for Attributes: properties, characteristics, aspects, features.
Data type properties include the relations between instances of classes and RDF literals and XML Schema data types.
Object properties consist of the relations between instances of two classes.
A formal ontology of properties, knowledge engineering and knowledge management: Methods, models and tools.

It was reported by Rokhlin and Kamado etc [2-5] that the Mg-Gd-Y magnesium alloy was better than conventional Al or Mg alloys in creep properties.
According to the Hall-Petch relationship, as well known, grain refining could elevate some mechanical properties, such as tensile, etc [6].
Meanwhile, the surface of materials had some special behaviors, and it could affect some important properties such as fatigue, corrosion etc.
But in the sub-surface, these factors didn't exist, so the SD decreased in this zone.
The hardness could be influenced by the factors such as: grain boundary, configuration of dentrite and dentrite arm spacing, and their influence became weaker and weaker in turn.

However, with the influence of a variety of marine corrosion factors, corrosion damage emerges at some of facilities constructed in the 70s and 80s of the last century because of lack of the necessary anti-corrosion measures, threatening the normal engineering work.
More scientifically, repair techniques and programs should be established on the basis of detection of integrated corrosion factors.
The concrete is strongly alkaline material, which requires that anti-corrosion coating of concrete has good properties of alkali resistance, penetration resistance and adhesion.
Acrylic polyurethane anticorrosion coating is a new type of composite resin anticorrosion coating not only combined with good gloss and color retention and outdoor durability of acrylic coating but also with excellent mechanical properties and chemical resistance of polyurethane coating.
Reasonable repair techniques and programs should be established on the basis of detection of comprehensive corrosion factors.

Near the big ends and tooth roots is mainly the area which affects demolding after modification.
Meanwhile, the pick and determination of modification area and size should not affect the smooth demolding of the fine-forged gears.
The analysis is based upon the sizes of the electrode gears, while some factors are neglected such as forging mold,elastic deflection of the forged parts and thermal deflection, etc..
displacement factor.
Near the big ends and tooth roots is mainly the area which affects demolding after modification.

To meet those requirements, the thermal error can be a major concern affecting machining precision of machine tools [1].
Substantial efforts have been devoted to better understand the thermo-mechanical behavior of a high-speed ball screw feed drive system.
Given the assumption of a linear elastic response, the stress-strain relationship is given by, where D has the form (9) , (10) (11) D is the elasticity matrix consisting of the material properties, whereas the properties of E, ν and α are the Young’s modulus, the Poisson’s ratio and the coefficient of thermal expansion (CTE).
The average cell length was around 0.0011m with the least spacing of 0.00045m to resolve the rapid variations of thermal properties.
Shin, “Integrated dynamic thermo-mechanical modeling of high speed spindles, part I : model development,” transaction of the ASME, J.