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The quality of the substrate plate materials is one of the key factors to ensure that the traffic sign play its functions.
Physical and Chemical Properties The physical and chemical properties of the ferritic stainless steel-related the traffic sign substrate plate mainly contain the mechanical properties, density, overall load and corrosion resistance in four areas.
Mechanical Properties.
Compared to Table 2, the mechanical properties of the ferritic stainless steel can meet the application requirements as the traffic sign substrate plate compared to the traditional metal materials.
The key affecting the welding quality is in presence of the C, N, S, P, O and other impurity elements in the ferritic stainless steel.

As a consequence, the the mechanical properties of water hyacinth fiber reinforced composites will be increased.
Physical Properties of Water Hyacinth.
Mechanical Properties of Water Hyacinth.
At temperatures below 110 oC, the water content in the water hyacinth has not evaporated and affects the mechanical properties of the water hyacinth which can decrease tensile strength.
Gonzales, A study of the mechanical properties of short natural-fiber reinforced composites, Composites 36 (2005) 597-608

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.

As the machine works at high speed, the real time changes of cutting force and other factors such as the external environment make the machine vibrate, which severely reduces the machining accuracy and surface quality of workpieces; while vibration also reduces the processing efficiency and accelerates the wear of tools, further affects the stability of the whole cutting movement[1-2].
Therefore, a key factor to improve the machining center performance and processing accuracy is to grasp the dynamic characteristics of the machining center[3-5]。
The vibration characteristics of machine can be expressed as a superposition of each order natural vibration modes, which lower-order modes have a greater impact on the dynamic properties of the entire organization.
Fig.3 The X-Direction Amplitude Frequency Response Curve Fig.4The Y-Direction Amplitude Frequency Response Curve Fig.5The Z-Direction Amplitude Frequency Response Curve Summary (1) By modal analysis, acquire its first six natural frequencies and mode shapes variations to determine the key of affecting the whole dynamic performance and the weak links of structures, and propose ways to improve.
Jixie Gongcheng Xuebao(Chinese Journal of Mechanical Engineering), 2010, 46(21): 54-60

Determine the Optimal Design.As the complexity of the welding process, there are many factors affecting welding residual stress.The welding current, arc voltage, welding speed are selected as the main factors, and each factor has three levels.
Factors and levels of orthogonal experiment are as shown in Table 5.
In this paper, we take the maximum longitudinal residual stress as an index, based on three factors and three levels of orthogonal table, inacordance with welding current, arc voltage, welding speed of the main factors affecting longitudinal residual stress , each factor with three levels.
The selected data have been range analyzed ,the smaller of assess index value, the greater of the priority factors.
Journal of Materials Science and Engineering , 2011 (5):570-576 [5] ZOU Dening.Influence of Heat Treatment on Mechanical Properties of 2205 Duplex Stainless Steel Welds [J]．Chinese Journal of Mechanical Engineering, 2011 (2):85-89 .

Laser surface alloying, cladding or melting are main methods to improve the surface dependent properties [3-7].
These factors can potentially improve the overall corrosion resistance[5].
As Hall–Petch indicates, the decrease of grain size will improve the mechanical properties, including hardness and yield stress.
It has been well known that the grain size plays a key role in improving properties of magnesium alloys.
The effect of grain size on mechanical properties is more significant in magnesium alloys with hcp structure than in aluminum alloys with fcc structure [11].

Automotive dynamics research the relationship between the stress and the vehicle movement, find the inner link and law affecting automobile main performance[4].
The advantage is that physical properties of the research object can be observed, intuitive to be trusted.
For heavy duty truck, there are many factors to affect the riding smoothness and handling stability, including chassis steel plate spring, cab mount, engine mount, tires, seats, etc.
Fig.3 Torsion spring polynomial stiffness coefficient optimization calculation Tires are important parts of duty truck, the structure parameters and mechanical properties decide the main driving performance of the car.
Other factors and the collocation between various factors has a little impact on acceleration value; Rear shock absorber damping and its tensile compression damping has large effects on the under-steer; Front shock absorber tensile damping, rear shock absorber tensile damping and rear shock absorber compression damping factors have large influences on the degree of body roll; Collocation of interaction among various factors of under-steer and body roll degrees have varying degrees of impact.

Although its properties are not identical with more frequently used synchronous motors with permanent magnets or linear synchronous motors [20], it is in the interest to test even this motor type.
Tab. 1 - The mechanical properties of the system Table weight 0.5 [kg] Screw pitch 3 [mm] Screw length 0.3 [m] Screw diameter 12 [mm] Dual drive 2x Maxon RE36 (2x 70[W], 24[V]) [21] Single drive Maxon 40 (150[W], 24[V]) [22] Results The current and speed during the test is shown in Figure 5.
Other factors affecting efficiency are iron losses hysteresis and eddy currents in the iron.
These factors are nonlinearly dependent on the operating conditions and their influence is usually minor.
For some applications it is furthermore possible to use the properties of induction motors.

The hole’s properties during PMMAlaser drilling are affected by some parameters such as CO2 beam power, exposure time, and sample thickness.
PMMA sheets were utilized as test materials for it has multi-application and excellent thermophysical properties, (refer with: Table 1).
PMMA thermophysical properties[11].
This approach is useful for studying responses (output factors) that are influenced by multiple independent factors (input variables).
Rozhbiany, Reinforcement and processing on the machinability and mechanical properties of aluminum matrix composites, J.

Introduction Due to their superior engineering properties over those of monolithic alloys, silicon carbide particle reinforced aluminum matrix (SiCp/Al) composites have become a large leading material in composite materials and received considerable attention.
Over the past decades, there have been number of studies in machining of SiCp/Al composites, and it is found that the morphology, distribution and volume fraction of the reinforcement phase are all factors that affect the cutting process [4-6], and the main tool wear mechanism in the machining of SiCp/Al composites is abrasion on the flank face and there has been no proof of chemical wear [7].
The material properties of the SiCp/Al composites are, elastic modulus 220 GPa, bending strength 400 MPa, vickers hardness 200 MPa, and the particle size and volume fraction are 60 µm and 56 %, respectively.
Kilickap [6] investigated machining properties of 5 % SiC/Al MMC material using different cutting tools, and they found that the coated carbide cutting tool was suitable to machine SiCp/Al composites and can obtain longer tool life.
Since abrasion is the major form of tool wear for the cutting of the particle-reinforced aluminium matrix composites, the chief factors affecting tool life are the size and the volume fraction of reinforcement particle in the composites.