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In general, energy absorption capacity of thin-walled tubes is considerably affected by principal factors like structural geometry, materials and loading conditions.
Auxetic foam material has gained popularity as a filler of thin-walled tube due to its enhanced mechanic properties compared with conventional foam.
The mechanical properties of square tube and foam core are given in Table 1.
The mechanical property of auxetic foam is adopted from Mohsenizadeh et al. [18].
Mechanical properties of aluminum tube and polyurethane auxetic foam.

In this paper, the effect of concentration, molecular weight and temperature on the flow properties of heterocyclic aramid dope was studied.
Fig.1 The effect of temperature on the flow curve of heterocyclic aramid solution, c=4% The solution temperature is one of the most important factors affecting its flow behavior.
Improving the molecular weight of heterocyclic aramid is a good way to prepare heterocyclic aramid fiber with better mechanical properties.
Among the three factors, the influence of the heterocyclic aramid molecular weight and concentration was stronger than that of temperature.
Assessment of compressive properties of high performance organic fibers.

Therefore, there will be continuous variations of longitudinal stresses affecting the force, required work and quality of product.
For this reason, the reaction of the non-mechanical influences on mechanical values will be taken in account by special formulated characteristics depending on rotational angle or rotational angular velocity [1].
The rigid elements refer to "rotational mass elements" that have inertial, absolute damping and coupling properties.
Figure 7: Influence of Rayleigh damping factors on armature current.
The amplitude and mean value of armature current in no-load steady state will be changed in relation to Rayleigh damping factors α and ß.

The diversity of physical properties of particles, liquid matrixes, and the variants of their field excitation makes the scope of the research impressively wide.
Resultant electrical, mechanical, thermal, and optical properties of such materials are dependent of both their composition and the filler spatial distribution.
Fixation of such structures on matrix solidification basically allows producing materials with new properties.
All these factors are found influential on the final pattern of the particle distribution in the settled polymer film.
Mechanisms, properties, technology and applications.

Unexpected vibration may cause part or whole damage of the mechanical equipment or structural.
Vibration restricts dynamic mechanical properties, reliability and projected lifetime of the structure.
To ensure the normal operation of equipment or structures, vibration control has become one of the most important factors of the structure design.
Friction damper is set two sliding friction faces to gain the damping function of the mechanical device, in essence, the mechanical energy converts to heat energy.
[3] Lingxiao Quan, Xiangdong Kong et al: Chinese Journal of Mechanical Engineering.

Electrical Properties Investigation of Unsaturated Polyester Resin with Carbon Black as Fillers R.
Their effect on the electrical properties of the polyester compositewas analyzed.
The electrical properties of polymer composite depend on the conductive fillers distribution among polymer matrix and as a result on the method of filling.
The arrangement and dispersion of filler in the polymer matrix hold an important role as a properties controller of the resulting composites.
Conclusion Electrical properties of polyester resin with carbon black as fillers were investigated.

The aim of this study was to investigate the effect of activated fluxes on the weld morphology, angular distortion, and mechanical properties obtained with activated tungsten inert gas (TIG) process applied to the welding of 6 mm thick mild steel and stainless steel plates.
The reversed Marangoni convection are considered to the main factors for increasing penetration of A-TIG on dissimilar welds in this study.
In this work, four kinds of oxide powders were used to study systematically the effect of activating flux on weld morphology, angular distortion, and mechanical property for JIS G3131 hot-roll mild steel to SUS 316L stainless steel dissimilar metal joint.
The angular distortions value θ can be derived from the equation: q = tan -1 (V/X) (1) Transverse tensile and Vickers hardness tests were used to examine the metallurgical properties of A-TIG welds.
According to work by Heiple [6-8], the direction of the fluid flow in molten pool can affect the welds morphology.

Numerical Analysis of Rain-Wind Induced Vibration on Conductor by Finite Element Method Zhou chaoa, Liu Yan-pingb North china electric power university, school of energy power and mechanical engineering, Beijing, 102206 azhouchao@ncep.edu.cn, blyp@ncepu.edu.cn Keywords: Rain-wind induced vibration, Finite element method, Ionic wind, Corona discharge.
The ionic wind coupling with wind force induced vibration of the cable, which seriously affected the cable's normal operation of transmission and stability.
Take LGJ-240 as an instance, using experimental and numerical analysis to analyze the impact on amplitude of cable by the air humidity and density, conductor surface conditions, cable structure factors and tensions.
In order to facilitate analysis, we assume that the cable have the same geometry and material properties along with direction of length, and ignore bending stiffness.
The results show that, the role of corona discharge affected on vibration is remarkable.

The questionnaire and outdoor and semi-outdoor comfort detecting devices are applied to analyze these real factors.
Some research achievements show that the usage of outdoor recreation spaces is affected by thermal comfort and physical comfort (mechanical comfort) of microclimatic conditions [2].
Outdoor weather factors affecting comfort include individual physiological factors of the micro-climatic conditions and open space [3,4,5].
The most famous road park in central Taiwan is applied to test and analyze these factors.
Otherwise, the surface temperature is affected by the material property.

Email: meiqbal83@yahoo.com* Keywords: Torrefaction, Fuel Biomass, Energy Properties Abstract.
This paper would show the effects of treatment severity and weight loss on the solid product properties.
The torrified bamboo was then characterized in terms of significant changes in chemical, physical and mechanical properties of the torrefied sawdust which include the changes in higher heating value, percentage of weight loss, volatile, fixed carbon and ash.
Torrified Properties.
Attention has been given to the effects of treatment severity and weight loss on the solid product properties.