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Introduction TiAlBN coating has gained much attention due to its superior properties in comparison to the most studied hard coating, such as the TiN, TiAlN, and TiBN.
In order to acquire desirable properties from the TiAlBN coating, the design of the coating’s microstructure is of particularly important.
One of the factors affecting the chemical composition of the n-TiAlBN coating is the nitrogen activity in the chamber.
Matthews, Structure, mechanical and tribological properties of sputtered TiAlBN thin films, Surf.
Shieu, Effect of nitrogen flow ratios on the structure and mechanical properties of (TiVCrZrY)N coatings prepared by reactive magnetron sputtering, Appl.

Both fresh and hardened properties tests were conducted to assess the WA lye-activated geopolymer mortar at 3, 7, 14, and 28 days.
Both the rheological and hardened properties of the geopolymer mortar were influenced by the AAR.
Al Bakri, “Properties of fresh palm oil fuel ash based geopolymer material,” Advanced Environmental Biolology, vol. 7, no.
Farzadnia, “Characterization of mechanical and microstructural properties of palm oil fuel ash geopolymer cement paste,” Construction and Building Materials, vol. 65, pp. 592–603, 2014, doi: 10.1016/j.conbuildmat.2014.05.031
Hardjito, “Factors Affecting the Setting Time of Fly Ash-Based Geopolymer,” Materials Science Forum, vol. 841, pp. 90–97, 2016, doi: 10.4028/ www.scientific.net/MSF.841.90

Therefore in order to fully increase the recycled concrete joint's seismic properties, this article uses the help of ANSYS to further study and analyze the recycled concrete joint behavior. 2.
Selection of material element and constitutive model 2.1 Recycled Concrete This paper uses Solid65(Concrete) material finite element to illustrate the properties of recycled concrete.
Cyclic loading does not affect the test results very much, therefore this article's analysis found it to be convergent.
In overall, the above mentioned core area beam longitudinal reinforcement's cohesion-slippage has a large influence on the loading properties of the recycled concrete frame joint, and finite element method calculations can not be ignored.
Mechanical properties of recycled aggregate concrete under uniaxial loading.

Recent studies have focused on developing a suitable scaffold for optimizing bone regeneration that have the similar physical properties of bone.
The degree of porosity, however, is closely related with mechanical stability.
The gradual replacement of scaffold by new bone at an appropriate rate should be achieved without disturbing the regenerating environmental factors.
There is a close relation among the degree of porosity, rate of biodegradation and mechanical stability.
In our trials to improve biodegradability, the the incorporation of Na2O without affecting other physical characteristics such as compressive strength was not successful.

Simulated Research for Effect of Mixer Shaft Speed on Flow Field in Mixing Machine KANG Wen-long1, a, GU Xin-yue2, b, MA Mu-jia3, c 1College of Mechanical Engineering, Liaoning Technical University, Fuxin, China 2College of Mechanical Engineering, Liaoning Technical University, Fuxin, China 3College of Mechanical Engineering, Liaoning Technical University, Fuxin, China akangwenlong@yahoo.com.cn,btingyuchenxin2010@163.com,c283405537@qq.com Keywords: mixer; fluent; flow field; simulation research Abstract.
Introductions Mixing machine is machinery which using mechanical force and gravity e.g. and uniform mixing up two or more materials.
The characteristics of the flow field in internal mixer is the most basic evaluation to a new type of mixing equipment properties [1], from numerical simulation point of view, simulating mixing machine facing challenge is that the flow area surrounded by the liquid level, the trough wall, the stirring paddle and stirring shaft changes with time.
Mixing equipment design[M].Beijing: Mechanical industry press, 2000
The research of influence factors with numerical simulation computational fluid dynamics in stirring reactor[J].

Simulation Analysis and Studying of Die Casting Forming Process for Crankcase Weigang Zheng1, a, Zhijun Liu2, b, Ning Yang3,c ,Chunlong Li4,d, Xin Yang5,e 1,2,3,4,5College of Mechanical Engineering , Guizhou University, China (aweigangzheng@163.com,b237097004@qq.com,c1259896330@qq.com d676341095@qq.com,975228727@qq.com) Keywords: Crankcase, Die casting, Local extrusion, metallographic test Abstract: In recent years, with the rapid development of automobile, the production of complex parts adopt the die casting process such as crankcase box. the stress of market competition make greater demand on Casting Products quality, such as the organizational structure of products has no shrinkage porosity defect and has good mechanical properties. this article’s simulation analysis of die casting forming process for Box are based on software AnyCasting, analyzing the reasons of air trapping from the filling process, Solidification sequence, Residual melt modulus. and it can conduct local
Technological parameters .The main factors influencing the forming technology are the injection speed, pouring temperature and mold preheated temperature .When the injection speed is excessive, air entrapment phenomenon increase this moment, leading to the defects of castings increase.
It is necessary to control mold preheated temperature, because mold Generate heat exchange with external, and it can reduce forming Difficulty that the excessive chilling of mold affects.
Fig.10 Equilibrium diagram of traditional die casting Fig.11 Equilibrium diagram of local extrusion-die casting Summary (1) For the complex box parts, getting the basic dimension required through reasonable designed die casting technology parameters, But the trapped gas and isolation liquid phase which lead to shrinkage porosity and cavity Phenomenon easily, it will occur oil leakage in which casting suffers oil pressure and can’t meet the technical requirements. we demonstrated the reasons of the existence of the casting defects and position, and putting forward the countermeasures through filling process, solidification sequence, residual melt modulus based on AnyCasting simulation (2) It is reliable solution to set local extrusion feeding in the die-casting molds where genenrating shrinkage cavity easily for casting, namely after the completion of a liquid metal filling mould, using local feeding device which has certain mechanical pressure to keep the casting under the effect

Tadmor et al. [3-5] studied the mixing process of polymer in extruder with dumbbell model, and they thought that the rupture of solid particles depended on particle size, particle cohesion force, particle heap porosity, shear stress provided by polymer melt, the residence time of the solid particles in the polymer melt flow field and other factors.
In this model, the dispersive mixing properties are evaluated by a multi-factor accumulative size distribution function.
Based on these, the dispersive mixing process of black carbon/NR in mixing section of two-rotor mixer are simulated, and the influences of rotors’ rotational speed and mixing time on dispersive mixing properties are studied.
This conclusion is consistent with the theoretical analysis,　and the simulative method using accumulative size distribution to evaluate the dispersive mixing properties is practicable and feasible.
PhD, Study on the Mixing Properties and Preparation of Carbon Nanotubes/Epoxy Resin Composites of Continuous Mixer, Beijing University of chemical Technology, (2011)

Introduction The properties of advanced polycrystalline materials depend critically on the properties of interfaces such as grain boundaries (GBs).
In particular, interaction between GBs and melts in structural materials may be the reason of deterioration of mechanical properties and failure.
In order to determine the factors affecting growing kinetics, the experimental penetration rate was compared with one predicted by Mullins for volume diffusion controlled GB grooving [3]. 10 100 10 15 20 25 30 35 40 ϕϕϕϕ,° t, hours 1 10 100 10 100 tgαααα=0.49±0.05 αααα Mullins (d~t 1/3 ) d, µµµµm t, hours a b Fig.3 Dependence of contact angle (a) and penetration depth (b) on annealing time. 3 1 2 0 2 01.1       = t RT DVC tg d mslσ ϕ (1) Following values were used for quantitative calculations: equilibrium concentration of Zn in Sn melt at 325°C C0 = 5.13·104 mol/m 3 [4], σsl = 150 J/m 2 at 200°C and dσsl/dT = −0.29 J/m2 [5], Vm = 9.2·10−6 m 3/mol, DZn(Sn) = 1·10−8 m 2/sec [6].
The change of grooves morphology of with time of annealing more 78 hours that denotes that for the very long annealing time the diffusion will probably become the limiting kinetic factor.

The performed theoretical studies and numerical calculations made it possible to carry out practical tests and develop conditions under which the physical effect of laser energy causes minimal damage to the alloys and composites of the sample, as well as to assess the effect of the laser on the properties of materials used in the aerospace industry.
In this paper, in order to take into account many different factors affecting the course of the technological process of laser cleaning of paint coatings from the surface of a sample made from a wing element of an aircraft of the Sukhoi Design Bureau, the temperature fields in the laser radiation zone are researched during the selective removal of a thin layer of AK-5178M paint with an ytterbium fiber laser YLR-150/1500-QCW-MM-AC [13-15].
M.: Mechanical engineering, 1951
M.: Mechanical engineering, 1984
M.: Mechanical engineering, 1985

affect china’s economic development and social stability.
Including storage conditions, such as stacking method, quantity,ventilation,isolation,etc; Physical properties such as temperature,pressure,state,flash point,ignition point,explosion limit and toxic as well as harmful characteristics ; Degree of equipment in good condition, defect, maintenance and use fixed number of year,etc; Protection conditions such as protection measures,fault handling measures, safety device and logo,etc ; Operating conditions such as technical level, operation errors, etc.; Management conditions like organization,command, coordination,control, planning,etc
(3)Triggers Triggering factors includes human factors, such as incorrect and carelessly operation, psychological factors,biological factors,etc; Management factors, such as improper management, and training as well as commanding mistakes and wrong judgment decision-making,design mistakes,errors, organization arrangement, etc; Natural factors, including the transformation of hazards caused by all kinds of natural conditions and other changes, such as temperature, pressure, humidity, wind, thunder, rain and snow, vibration, earthquake, landslide,etc; Although triggers does not belong to the inherent nature of hazards, it is a external cause for hazards transfer into the accidents, and each type of hazards has a corresponding sensitive trigger factors ; As for flammable and explosive substances, the heat is sensitive trigger, and as pressure vessel, pressure is the sensitive trigger factors.Hazards transform into dangerous state under the action of the trigger which contribute to the accident
Construction the main accident types contain five categories : falling accidents, getting an electric shock, objects strike, mechanical damage and collapse .The main parts of five kinds of accident are the construction of hazards.
Registering the hazards which is likely to affect the construction safety .