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The statistical models [2, 3] of multi-asperity contact have been developed in order to predict some contact properties, such as the real contact area, number of asperities in contact, etc.
Back [9] demonstrated that the total deflection at a joint connection is dependent upon the elasticity of the components surrounding the mating surfaces, and he also discussed factors affecting the normal contact stiffness.
Depending on the nominal pressure, surface roughness and material properties, the deformations which occur at the contact region can have three different states, namely (i) elastic, (ii) elasto-plastic and (iii) plastic.
(1) where the parameters λ and κ are the scale factor and shape factor respectively.
Thanks go to the Department of Mechanical Engineering from the K.U.Leuven, which made it possible to perform the experiments.

The parameters affecting the vibration are investigated by the approach of design of experiments which can reduce design cycle significantly.
However, it is seldom reported in the drum type washer because of complex gravity factor.
Finally, from the simulations, the key factor leading to the optimization results is pointed out and further discussed.
In addition, the three heavy counterweights which attached at the left, right and top side respectively are important part of the washing machine that actually have a big impact on inertia properties of the suspension system.
Design of experiments, also called DOE, is applied to intelligently explore an entire design space of many factors by using multibody system software Adams from MSC.

The influences of each factor is discussed, and preventive measures are also put forward.
The main degradation pathways in oil recovery applications are chemical, mechanical, and biological[1].
Hydrolysis was significantly affected by temperature.
Both of them affect HPAM stability.
Polymer solution properties and displacement mechanisms.

Prof., Dept. of Mechanical Technology, Univ. of Miskolc, Hungary 3, PhD, Assoc.
However, in the course of fabrication, particularly those where post-weld heat-treatment is difficult or impossible such as in the repair and reconditioning of in-service fabrications or where transition welds are required, different filler materials are preferred to introduce different mechanical properties such as higher ductility or lower yield strength.
It has therefore been necessary to examine the effect of the material interface for modern steel grades using numerical analysis simulating various responses to conditions and properties in each component.
This change of flow affected the decomposition of the Fe3C, (M3C) and this affected the dimension of the decarburised zone.
Acknowledgements Dr Kirk wishes to thank Professor Kleemola for valuable discussions concerning the solubility factors noted in the text.

Introduction Polyethylene (PE) has found widespread use as a packaging material primarily due to its excellent mechanical properties, chemical and biological inertness, low cost, and high energy effectiveness [1].
A combination of all these factors contributes to the inertness of PE.
Other physical factors affect the degradation rate including morphology and surface area of the materials [5].
Mechanical strength was evaluated by using an Instron 5565 Instrument.
Generally, the degradation of PE is initiated at weak sites and proceeds via the formation of hydroperoxide intermediates to form carbonyl compounds, leading to chain scission and loss of mechanical properties.

However, traditional plasma nitriding is not suitable to be used to improve the mechanical properties of stainless steel due to the obvious reduction of corrosion resistance [[] Y.T.
Moreover, it is well known that element diffusion rate is mainly affected by two factors, temperature and diffusion activation energy.
Vol. 50 (2004), p. 647. ] were exposed to severe plastic deformation by mechanical attrition on surface before nitriding.
The progressively changing microhardness towards sub-surface is favorable to superficial mechanical properties such as loading-carrying ability and bond strength between nitrided layer and substrate.
Thus, nitriding alone improved the FF life by a factor of 43 times and SP+nitriding led to only a five-fold improvement.

The reinforcing fibre in the composite affects the main lamina properties, such as the tensile modulus and strength in the fibre direction.
Mechanical Properties of Composite Lamina.
Table 1 shows the mechanical properties of the unidirectional composite lamina employed in the FEA model.
The mechanical properties of the liner materials are given in Table 2.
The minimum factors of safety in the fibre direction is equal to 1.18 (layer 14 in Fig.3 (a)), the minimum factors of safety in the transverse direction is 1.0 (layer 3 in Fig.3 (b)) and the minimum factors of safety in the shear is about 3.0 (layer 4 in Fig.3 (c)).

Electromagnetic stirring is an effective technique of improving the solidification structure and mechanical properties during continuous casting，because there is a notably effect of the flow on the density,segregation and inclusion of molten metal.
So, electromagnetic stirring is an effective technique of improving the solidification structure and mechanical properties[1~5].
The research results is helpful to optimize the processing parameters for acquiring the billet with better mechanical properties.
As well, several factors will affect the measurement accuracy such as the number of little coil, the magnetic field and the artificial operation.
Microstructure and mechanical properties of semi-solid ZL101A alloy prepared by EMS-DC method[J].

Mainly their variability in time is affecting speed of diffusion flow and causing that each historic building, or area, is unique.
In all above stated materials were performed tests aiming to obtain full overview of their mechanical and physical properties.
Properties relevant for basis of the experiment are stated in table 1.
Tab. 1: Monitored properties of used materials Tab. 2: Marginal conditions of the experiment (average values during tests) 4.
Water vapour resistance factors of three wall surface finishing.

Faculty of Mechanical Engineering and Aeronautics, Al.
More attention is paid to the methods of protective coating and an assessment of their property in order to getting a better understanding of the factors affecting the increase usability layer.
The results indicated the dependence of properties of coating at the process deposition parameters.
The effective protection of surfaces dependent on the coating properties, from which the hardness of coatings is very important.
[5] Tsai-Shang Huang, Microstructure and properties of Thermal Sprayed WC-CrC-Ni Coatings, China Steel Technical Report. 24 (2011) 28-32