Search results

If the type of material used on the shaft is obtained, then its mechanical properties can be determined.
These mechanical properties are indispensable as input data in performing finite element analysis.
The chemical composition test results data in Table 1 show the presence of the carbon steel in the drive shaft material as corresponding to those of the AISI 4140 standard material specifications [10], while the mechanical properties of the AISI 4140 in Table 2 indicate its fracture toughness, KIC to be of a 27 MPa√m value [11].
Mechanical Properties of AISI 4140.
Properties Metric Unit Tensile strength (σB) 655 MPa Poisson Ratio (ʋ) 0.28 - Density (ρ) 7850 Kg / m3 Yield strength (σys) 415 MPa Modulus young (E) 200 GPa Shear modulus (μ) 80 GPa Hardness, Rockwell C 25 HRC Allowable shear stress (τa) 36 MPa Fracture Toughness (KIC) 27 MPa√m Hardness.

In order to fulfill the demand of fine circuit board, a UV-curable conductive ink was prepared, and the factors affect conductivity of ink was studied.
The ink, which prepared with flaky and spherical silver powder, has the best conductive property.
The paper discussed the factors that influence the conductivity of UV-curable ink.
IGT-2S high speed mechanical stirrer, Digital display constant temperature magnetic stirrer, Muffle furnace, Multi-function multimeter, Fusion UV curing machine, SS-550 SEM.
International Journal of Antennas and Propagation, 2007 [5] Zhao G，Stevens SE J．Multiple parameters for the comprehensive evaluation of the susceptibility of Escherichia coli to the silver ion [J]．Biometals，1998，11(1)：27 [6] WeiXianFu WangNa jia NiPingXiu GuLing withdrawal of light snow adhesive and printing ink to offset oil impact on China printing ink rheology and packaging research in November 2010 (second edition) [7] FengChangYong influence printing ink transfer rate the analysis of the factors of henan mechanical and electrical engineering school journal in November 2008  [8] SunCheng bo, silica rheological characteristics and dispersion models [D], Beijing printing university, 2007 [9] YangJianWen, CengZhaoHua, ChenYongLie. 

The temperature profile of plate was completed on the run-out table so that the product with fine microstructure and good mechanical properties was produced.
The mechanical properties and microstructure of the final product are shown in Table 4 and Fig.7.
The microstructure of product is bainite, so the mechanical property is relatively higher, at the other hand, the elongation is also better.
Effects of Control Cooling on Mechanical Properties of C-Mn Steel[J].
Control of Factors Affecting Homogeneous Cooling of Plate Furing Controlled Cooling[J], Wide and Heavy Plate, 2000, 6(1):1~6, (in Chinese)

Chemical enterprise major hazards identification Li Zhao 1, a Naiyan Zhan1,b 1 School of Municipal & Environmental Engineering,Jilin Jianzhu University,Changchun, P.R.China a 925089297@qq.com, b velon0066@sina.com Keywords: Dangerous and harmful factors analysis; Identification of major hazard installations; Major hazards analysis Abstract.
Dangerous and harmful factors in the process of MTBE production analysis Dangerous and harmful factors of isobutylene production process analysis.
This device has a lot of rotating equipment such as pump, if these devices lack reliable protective measures or protective facilities damaged, can happen to squeeze grinding, involved in, such as cut thorns of mechanical damage to operators.
Highly reactive polyisobutene production process dangerous and harmful factors analysis.
Compression refrigeration process and catalyst preparation are flammable material in the device, so once leak easily fire explosion.High-speed operation of the compressor, as a result of improper operation or lose control of various mechanical injury accident happens even explode[4].

In this paper, index system of the safety of VCM storage tanks was established by analyzing four main factors including 18 indexes, based on accidents statistic and technology experience.
There are many factors which will cause the leaking of VCM, such as mechanical effect (shock), chemical effect (corrosion), higher pressure and incorrect operation.
In order to assess the safety of VCM tanks more credibly, we used analytical hierarchy process (AHP)-fuzzy comprehensive evaluation method to evaluate the safety of VCM tanks, taking full account of the various factors affecting VCM tanks safety and combining the qualitative and quantitative analysis, so as to establish model for safety assessment of VCM tanks.
Establishment of Index System for the Safety of VCM Storage Tanks In view of the complexity of factors affecting the safety of VCM storage tanks and the independence of factors, the study is divided into three levels based on the statistical analysis of VCM leaking accident and the experience of personnel in charge of technology or safety.[2] Specific safety index system of VCM storage tank is shown in Fig. 1.
Level B is criteria that are operation factors, safety reliability of the tank, safety accessories, detection and protection of the tank.

Before the passive suppression of vibrations is commenced it is necessary to determine dynamic properties of the desired system in the form of characteristic functions that define the system mobility (mechanical admittance) or immobility (mechanical impedance) [1,2]
In this study the conditions for passive suppression of vibrations are determined as the values of factors specified by drop of the free vibration frequency.
In the above-presented case, the immobility (6) and mobility (7) take the analytic form taking into account solely the dynamical properties in the form of resonance and anti-resonance frequency sequence
Structure of mechanical system obtained as a result of applying the passive vibration reduction in the case of properties described in the forms (6), (7) Computer-aided numerical example The Synteza program is designed to determine a discrete mechanical system by taking into account the desired dynamical properties.
These requirements apply to obtaining the set dynamic properties of systems with control as characteristic functions (impedance, mobility).

Besides, the microstructure and mechanical properties of the welding joints are also investigated.
In order to investigate the weld interface and the mechanical strength of the joint, the weld examples were cut through the cross-sections of the joint areas.
Besides, process parameters are the key factors contribute to different interface morphology, especially for impact velocity, impact angle and flyer plate thickness.
Besides, no heat affected zone and intermetallic phase appeared in the area of weld interface.
In order to investigate the microstructure and mechanical properties of the welding joints, interface morphology, micro-hardness and microstructure characterization are discussed.

The mechanical properties of hybrid composites are significantly influenced by the stacking sequence of fibers [7-9].
An additional critical factor affecting the overall durability and lifespan of natural fiber composites is their water absorption behavior.
Mechanical properties of hybrid composite sandwich structure with sisal and E glass fiber.
Experimental investigation of mechanical and erosion properties of twill E-glass/sisal fiber reinforced hybrid polymer composite.
Influence of stacking sequence on mechanical properties of basalt/ramie biodegradable hybrid polymer composites.

Surface related properties of denture base materials (roughness, surface free energy, wettability, hydrophobicity, etc.) are of clinical importance since they affect plaque accumulation and staining.
Surface related properties of denture base materials (roughness, surface free energy, wettability, hydrophobicity, etc.) are of clinical importance since they affect plaque accumulation and staining [11].
Candida Albicans is an opportunistic pathogen in humans and some predisposing factors such as immunosuppressive drugs, xerostomia, systemic diseases assosciated or not with poorly fited and porous dentures result in fungal infections.
Also silane-SiO2 nanocomposite films are reported to reduce adherence of fungal entities without affecting physical properties of tested heat-polymerized acrylic resins [24].
Evaluation of mechanical and thermal properties of commonly used denture base resins, J Prosthodont 13 (2004) 17- 27

Physical and mechanical properties of soft foundation may change strikingly because of the rainstorm, constantly softening phenomenon of soft foundation in full underwater has affected the stability of slope, and engineering has been attracting increasing attention to it [1].
Physical and Mechanical Properties of Soft Rock Soften under Saturated Water Study on the water - rock interaction is one of the new frontiers in geotechnical engineering, and study the change of the mechanics properties of the different types of soft rock in saturated condition, for further discuss on the essence and the regulation of saturated soft rock under the condition of the softening has theoretical significance.
In natural state the rock is relatively complete, hard, mechanical performance is good, when encountering water after a short time rapid expansion, crumbling and softening, which causing the rock mechanics properties quickly greatly reduce [2].
Combined with engineering examples, study on the slide block the stability in different conditions, the results show that on the assumption that the saturated static water, owing to the mechanical properties of rock mass structure surface constant, the stability safety factor of slope change is not apparently.But assuming mass effect in saturated water effect, make the rock mass structure surface mechanical properties of soft, intensity decreases, this would lead to slope slide block stability's influence is more obviously.
[3] ZHOU Cui-ying, DENG Yi-mei, TAN Xiang-shao, LIU Zuo-qiu, SHANG Wei, ZHAN Sheng Experimental Research On The Softening Of Mechanical Properties Of Saturated Soft Rocks And Application[J].