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A user-engineering design interaction supporting rational product cooperative design Jianjun Qin1,2 a, Yan-an Yao1,b , Jianwei Yang2,c 1 School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044 Beijing, China 2 Department of Mechanical-electronic and Automobile Engineering, Beijing University of Civil Engineering and Architecture, 100044 Beijing, China ajjqin@yahoo.cn, byayao@center.njtu.edu.cn, cyangjianwei@bucea.edu.cn Keywords: User-engineering interaction; utility; engineering design decision; cooperative design Abstract.
Purchase behavior of consumers at least relate with three main factors: the characteristics of consumers, related competitive products on the market, and the particularity of the region.
Kano distinguished between three types of product requirements which influence customer satisfaction in different ways when met: Must-be requirements: Customer first and will need to consider factors that will directly affect whether consumers will buy the product change, or if you do not have these functions even if the product a cheaper product features that consumers would not consider buying.
Modules are defined as the components in group should share some property.
Journal of Mechanical Design, 1994. 116: p. 801

The microstructure and wear properties of the coating are studied.
There is a heat-affected zone (HAZ) between the coating and the substrate, whose structure presents refinement because of quick heating and quick cooling during ESD process.
Mechanical Properties of Deposition Coating.
Moreover, there are many ultra-fine particles and distribute dispersedly in the coating, which are the main factors leading to the high hardness and wear resistance of the coating.
Fine hard phases distributed dispersedly in the coating are the main factors leading to high hardness and wear resistance of the coating, which effectively improves the surface performance of die steel substrate.

Effects of properties of tubing and equipment material on erosion and corrosion may be considered.
Cavitation corrosion is caused under the coordinated action of mechanical and chemical factors.
In addition to corrosive component content, the proportions of oil, water, and gas in multiphase systems and the change of phase state may affect corrosion severity.
The relative density of natural gas is 0.6 and gas deviation factor is 0.8.
[2] Wan Xiping, Zhu Jinchuan, et al., (Trans.), The Carbon Dioxide Corrosion Control in Oil and Gas Production—Factors Considered in Design(Petrochemistry Press, China 2002)(In Chinese)

In this paper, a possible concept of piezoelectric harvester with potentially improved electro-mechanical properties is studied.
The weight function procedure developed in [12] simplifies the determination of the stress intensity factor K.
Due to the high stress concentration around the crack tip and different material properties of each component, a significantly refined mesh in the vicinity of the crack tip and along the prospective crack path through the laminate was used.
To propagate such crack further, significant additional mechanical load has to be applied.
Munz: Stress Intensity Factor and Weight Functions, Computational Mechanics Publication, 1997

Insertion of salts into the ceramic materials of bricks causes a gradual loss of the original properties of the material.
As a very important factor that affects the stability of ceramic brick is its porosity, pore structure determination was performed by mercury intrusion porosimetry.
These three groups of body properties depend on raw material composition and technological process, especially heat treatment.
Materials and methods The research enabling an assessment of microstructure changes in the environment of magnesium sulphate was carried out on two types of ceramic porous materials E and B of different texture and physical and mechanical properties.
The selected properties of materials under investigation are presented in Table 1.

As the core components of the high speed friction and wear test system, the dynamic performance of the ultra-high speed rotary system directly affects the working stability and reliability of the whole system.
Rotating disk is one of the basic mechanical components widely used in rotating machinery.
To realize the coating skiving experiment, high speed rotary table of the ultra-high speed friction and wear test system is not only affected by factors such as support bearing, unbalance mass and so on from the internal system, but also affected by Intermittent skiving impact.
Mode is inherent in the mechanical structure of the vibration characteristics, each mode has a specific natural frequency, damping ratios and mode shapes.
A New Method for Evaluation of Mechanical Properties of Sealing Coating[J].

The most important factors in developing the mineral wool core are optimization of the Curing system and density of the used resin.
These 'shots' impair the insulation properties of the final product [1].
Properties of edge region in mineral wool board.
IEA Annex 24 Final Report, vol. 3, Task 3 Material Properties.
N., "Acoustical properties of fibrous absorbent material", Applied Acoustics, 1970, Vol.3, pp.105- 106

This paper based on the observation data of ground surface settlement of long double line highway tunnel, and combined with FLAC_3D simulation analysis complex mechanical behavior of tunnel excavation process [3].
Analysis the process of excavation of tunnel caused by deformation property and the influencing factors and provide valuable scientific basis for the channel design and construction.
Mechanical model is shown in Fig.3 and Initial stress contour is shown in Fig.4 Fig.3 Mechanical model Fig.4 Initial stress contour The numerical simulation steps
(3) Induct the model data into FLAC_3D program and the model material properties are given by FLAC_3D procedures.
Conclusion The measuring data of the field and numerical simulation show that the final ground surface settlement curve show bimodal distribution and it appear asymmetric affected terrain and tunnel excavation time.

The propagation of microwave through the material can be affected by these variation in properties.
One way is to monitor the hazard factors, such as water content in concrete, which is closely related to material or structural deterioration processes.
In this respect, the hazard factors that may induce the change of permittivity or permeability can be detected and quantified, through the monitoring of these coefficients.
When material properties are known, the concrete thickness can be easily estimated through Eq. 14.
Neville: Properties of Concrete, Fourth Edition (Pearson Education Limited, England, 1999)

Analytical Model The mechanical properties of the hybrid composite used depends strongly on the specific conditions of implementation and storage.
It is difficult to describe its behavior by a model that can link its mechanical properties to its internal structure.
For a constraint and a given temperature, the Findley model can be written as: According to the principle of superposition and for given reference conditions (σr, Tr), equation (2) can be written as : where av and ah are respectively the vertical and the horizontal shift factors.
Trend lines for av and ah give the following equation: Figures 4 et 5 show the evolution of the shift factors av et ah for σr=18MPa and Tr=50°C.
Fig.5: Horizontal shift factor versus stresses Fig.4 :Vertical shift factor versus stresses We can see from the curves Fig. 4 and 5 the influence of stress on the two shift factors.