Search results

To determine the protective properties of barrier layers affected by the atmosphere chemistry, similarly as for solid-state reactions, the Pilling-Bedworth (P-B) ratio is used.
Based on data from Ref. [14] Magnesium reactions with oxygen affect properties of the final products, especially in processes where effective protection by gaseous atmospheres is not possible.
As shown in Fig. 3, properties of the final product are dependent on the progress of oxidation [9].
It is proven that reactive element additions positively affecting ignition and flammability resistance at the same time improve protective properties of surface oxide layers.
Funami, Texture, microstructure and mechanical properties of calcium-containing flame resistant magnesium alloy sheets produced by twin roll casting and sequential warm rolling, in Magnesium Alloys edited by F.

Important features which characterizes them are their amorphous structure and unique mechanical properties.
This effectively can be used for the evolution of preferred phases and thereby can be used to affect the properties of the alloy.
Thadhani, Mechanical properties of bulk metallic glasses.
Shiflet, Mechanical properties of iron-based bulk metallic glasses.
Vander Sande, The effects of devitrification on the mechanical properties of Cu46Zr54 metallic glass.

Surface integrity includes the mechanical properties (residual stresses, hardness etc.), metallurgical states (phase transformation, microstructure and related property variations, etc.) of the work material during processing and topological parameters (surface finish and other characteristic surface topographical features) [13].
Zone-I: Heat affected zone (HAZ), Zone-II: Work-hardening zone (WH), Zone-III: Safe and normal (SN).
From Fig. 2, it can be seen that in general, preheating gives much affects the surface microhardness.
This is area is established as Heat affected zone (HAZ) as shown in Fig. 2 (Zone-I, 450 °C).
Merchant: Basic Factors in Hot Machining of Metals, Trans.

（5） —Amount of coarse aggregate per unit concrete —Amount of fine aggregate per unit concrete Initially selected mix is showed in Table 4: Table 4 Initially selected mix (Kg) Material Water Cement Fly ash Sand Stone Antifreeze admixture Superplasticizer Dosage 180 340 60 553 1027 16 4 The concrete slump which was crafted according to the above mix design can not be achieved, the slump is too low and liquidity is poor .According to the above formula design method to adjust concrete mix , we can obtain the three groups of formula showed in Table 5: Table 5 Three groups of formula Number Material water cement Fly ash Sand stone Antifreeze admixtures Superplasticizer A Dosage 190 344 60 806 950 13.76 4.04 B Dosage 190 358 64 780 950 14.32 4.22 C Dosage 190 380 67 763 950 17.88 4.47 Test and analysis Test made 150mm cube specimens in accordance with the request in standards for test method of mechanical
properties on ordinary concrete.
Test results and analysis Concrete block which were produced by the above method were tested cube compressive strength pressed the standards for test method of mechanical properties on ordinary concrete..Pressure changes are as follows in Table 6, 7 and 8 .
（2） Under unprotected, A, C formula concrete compared to standard curing concrete strength is low, each period has a certain degree of reduction, A formula can not even reach 35MPa.In the film wrapped, quilt cover curing concrete strength compared to the standard curing and unprotected conditions, concrete strength have increased more .Antifreeze admixtures have important impact to improve the early strength of concrete , and curing of concrete in winter construction conditions is also important factors
(2) Antifreeze admixtures get great influence on the strength of concrete,Visible winter construction concrete strength was affected by the amount of concrete admixtures.and at -15 to -5 cold conditions, more suitable used JH-I-type antifreeze antifreeze to deploy the concrete

However, these excellent properties of the alloy cause the difficulty in machining.
The main problems are the short tool life and low metal removal rate, which mainly stem from the poor thermal properties of the alloy, periodic gross inhomogeneous deformation, instability in the chip formation process, oscillations in the cutting and thrust components of force, high tool chip interface temperature, high chemical reactivity of the alloy and low modulus of elasticity.
If the major wear factor is adhesion.
Narutaki: Chinese Journal of Mechanical Engineering Vol. 20 (2002), p. 33 [3] E.
Zhang: Chinese Journal of Mechanical Engineering, Vol. 2 (1988), p. 28 [5] M.

Introduction As one of the most important parts of the wind turbine generator, a good structural design of wind turbine blade is the deciding factor to guarantee the whole generator operates normally.
The maximum stress of the spar cap is far less than 648.7MPa, which is the allowed stress of the glass fiber composites, it shows that the blade lay-up design did not make full use of the mechanical properties of the composites.
The maximum stress of 90MPa which occurs on the spar cap close to the root is far less than the allowed stress of the glass fiber composites, this indicates that the blade lay-up design did not make full use of the mechanical properties of the composites.
(3) The flapwise and edgewise play a main role in the blade vibration while the torsion affects little.

The different process conditions also make the coating effect and the electrical properties of the composites different.
Doping of protonic acid was an important factor affecting the conductivity, different concentrations of aniline to provide the acidic environment was different.
Conclusions The process conditions of PANI coated nickel fibers and electrical properties of coated nickel fibers were investigated.
Shi, and Q.Guo, Preparation and Electrical Properties of Graphene Coated Glass Fiber Composites.
Yang, Preparation and Electromagnetic Properties of PANI Coated Short Carbon Fibers.

Collagen belongs to the proteins family [10, 15] and has especially stable structure giving great mechanical properties.
Variation of the three groups of parameters that is: 1) processing parameters, 2) solution properties and 3) environmental condition parameters, is a way to affect electrospun product morphology.
Fibres produced by this process have higher crystallinity leading to better mechanical and structural properties important for scaffolds mechanical integrity [65].
Tee, et al., Structures, mechanical properties and applications of silk fibroin materials, Prog.
Ramakrishna, Mechanical properties and in vitro behavior of nanofiber–hydrogel composites for tissue engineering applications, Nanotechnology, 23 (2012) 095705

Introduction Carbon fiber-reinforced plastics (CFRP), particularly thermosetting epoxies, are employed in an expanding array of applications, including aerospace, because they possess superior properties for the manufacture of light components.
The designer chooses from among these on the basis of hole diameter, machining efficiency, and other factors.
The repetition of this action increased the processing time, but we found that the heat-affected area was reduced in inverse proportion to the time spent.
The hole quality evaluation methods employed in this report indicate that a heat-affected layer of approximately 2 mm in thickness was left in the material.
However, this is not efficient at small sizes, and efficient at diameter 3.0mm and over, from the view point of efficiency and heat-affected.

The Experimental Study on the Performance of Anchor Material of Mooring System for Deepwater Drilling Ding Feng, Zuojie Liao, Peng Wang, Cheng Yang, Qiang Luo （School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei 434023, China） fengd0861@yahoo.com, fengd@yangtzeu.edu.cn Key words: deepwater drilling; mooring system; anchor; performance; experimental study Abstract.
Generally speaking, the main factors like abrasion damage, stress corrosion and fatigue lifetime are required to take into consideration.
The nickel content of the material is 0.020%, which shows the material has good intensity, ductility and acid-alkali corrosion resistance; the molybdenum content of the material is 0.004%, which promotes the grain refinement of material structure, thus the mechanical properties of anchor material are also improved.
In view of this experiment, we can make the following suggestions： (1) Since the percentage composition of chemical elements in the anchor material affects the material intensity, ductility, abrasion resistance, corrosion resistance and other properties, we can change the processing technology of anchor material, and make the chemical composition more reasonable so that the material can adapt to the complicated deepwater environment better