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Introduction The diamond-like carbon (DLC) coating is a collection term for a large class of amorphous or amorphous nanocrystalline composite carbon films with different properties.
Liquid Solid Liquid Solid Fig.1 (a) Water contact angle less than 90°: hydrophilic; (b) Water contact angle greater than 90°: hydrophobicity a b The investment works [2-4] found that water contact angle is decided with two factors: the element composition and the micro-topography of surface.
In addition, the increasing in the roughness interfered with the affecting of surface energy for alcohol contact angle.
But the interfering not interfere the affecting of surface energy for water contact angle, so the value of angle increase as roughness increase, as show in fig.12 (f).
Wang, et al., Fullerene nanostructure-induced excellent mechanical properties in hydrogenated amorphous carbon, Applied Physics Letters. 91(2007)(14):141902-3

Monotonic tensile and cyclic tests of welded joints and base material (BM) were performed to understand the influence of the welding process in the static and fatigue mechanical properties.
Table 1 summarizes average values of some relevant mechanical properties extracted from the monotonic tensile curves.
The table also includes reference properties from the BM supplier.
Table 1- Monotonic properties for base material and FS welded specimens.
Karlsson, Microstructure and mechanical properties of friction stir welded aluminium alloys with special reference to AA 5083 and AA 6082.

However, fatigue crack origin changed toward to the base material and the heat affected zone with increasing testing temperature.
Table 2 shows tensile property of the base materials used and the weld at room temperature and 300℃.
Table 2 Tensile properties for the base materials and the weld.
Change in mechanical property for the base material and weld metal due to increase in temperature induces change in fatigue mechanism and result in difference in fatigue strength of the weld joint at room temperature and 300℃.
Appropriate position for the welding in a component with temperature gradient can be considered by taking into account change in stress concentration effect and mechanical property at high temperature.

The variation in properties across the weld can be attributed to several factors, mainly to residual stresses just after welding.
On the other hand, other factors can contribuate to this hardening like grain size, phase composition, metallic inclusions.
Baudin, Effect of welding on microstructure and mechanical properties of an industrial low carbon steel, Journal of Engineering, 2, (2010) 502-506
Lars-Eric, Control of Microstructures and Properties in Steel Arc Welds, Library of Congress Cataloging-in Published Data, 1994
Lars-Eric, Control of Microstructures and Properties in Steel Arc Welds, Library of Congress Cataloging-in Published Data, 1994

Introduction The hardenability is one of the most critical properties of steels since it is often referred to when the suitable material should be selected for the given part or component [1…3].
Incorrect selection of the steel grade with unsuitable hardenability may cause fatal defects or poor mechanical properties of the final product [4, 5].
The main factors affecting the hardenability of the structural steels are the chemical composition, the chemical homogeneity of steel, the content of impurities and non-metallic inclusions, the austenite grain size [6].
Moreover, the massive parts of 38CrMo steel may contain sufficient amount of ferrite and pearlite in their core after the quenching causing the deterioration of the mechanical properties.
Ma, Effect of microalloying elements on microstructure and properties of quenched and tempered constructional steel, IOP Conf.

It has been found that the worktable speed is the key factor affecting the pattern of CHTC distribution, whilst the grinding speed strongly affects the overall magnitudes of the CHTCs.
, , (2) Where hw, hs and hch are conduction factors to workpiece, abrasives and chips. hf is the global convection heat transfer coefficient .
bw is the thermal property of workpiece material[6, 7], vs is the wheel speed .
(iii) Distribution of local convection factor, hw(x), along the grinding direction: (9) The variation of local conduction factor along the grinding direction can be derived from the Circular arc of contact model developed by Jin and Rowe [10]. 3.
The worktable speed is the key factor affecting the pattern of CHTC distribution of the grinding fluids.

Also, a model to find the optimum input factors was shown. 2.
Input factors and levels No.
Factors Factor levels Level 1 Level 2 Level 3 1 Pulse on time Ton (ms) 6 14 - 2 Powder concentration Cp (g/l) 0 3 6 3 Pulse off time Toff (ms) 14 21 30 4 Pulse current IP (A) 4 8 12 5 Server voltage SV (V) 3 4 5 To investigate the influence of the input factors on the MRR, five input factors were selected.
The ANOVA of MRR and the effect of the input factors on the rate are shown in Table 4 and Figure 2.
Calculated and experimental results Objective properties Optimal process factors Calculation Experiment Error (%) Ton2/Cp3/Toff3/IP3/SV3 Ton2/Cp3/Toff3/IP3/SV3 Machining time (s) 0.0805 0.0889 10.43 5.

Without any treatment, most of them were transported to the outskirts to pile up in the open air or landfill, and that would need a considerable amount of construction investment with land and other factors.
Currently, more and more studies have been paid to the properties of recycled concrete aggregate at home and abroad[5,6,7], but the research on recycled brick concrete was still less.
Recycled brick concrete were mixed by hand and vibrated with mechanical vibration table according to GB / T 50080-2002 “Test Methods of Properties of Ordinary Concrete Mixture" operation.
[9] Standard for Test Method of Mechanical Properties on Ordinary Concrete [S].
[10] Lingjun Xie, Ailiang Zhai etc. the mechanical properties of gradation of recycled concrete with Brick and tile aggregate[J]; Water Resources and Architectural Engineering; 2010,8(6):52-55.

Based on a deep foundation pit of a subway station, this paper analyzes the reason of intrusion-clearance in the process of whole construction, and the affecting degree of every factor.
All of this indicates there may have other reasons except construction factors, such as the parameters of diaphragm and the improving effect of reinforced soil.
Factors Affecting Displacement of Diaphragm Wall.
According to the above analysis and practical situation, the improving effect plays a key role on the wall displacement among all above factors.
Due to the influence of construction level and soil properties, the local experiences should be considered.

It was observed that Type 2 has higher mechanical properties and dimensional stability than Type 1. 1.
INTRODUCTION Fiber reinforced composites have better excellent mechanical properties than metals or Al alloys from the viewpoints of stiffness, anti-corrosion, and loss of weight.
The weight of real structure is one of the important factors of all materials used in transportation facilities.
However, when these composite materials are exposed to very severe condition, the mechanical properties (stiffness, strength, glass deformation, etc…) and the physical properties (dimension, etc…) will be changed.
Table 2 shows comparison of mechanical properties of each panel.