Search results

Based on the pit excavation engineering in Shenyang, which sits atop the existing tunnels, the risk factors and failure type of shield segment lining were studied through risk analysis theory.
Basic mechanical parameters are shown in Fig.1.
Mechanical properties of each soil layer are shown in table 1.
It is obviously that the normal layer excavation method has great effect on the longitudinal deformation. 4.3 The total risk estimation of shield segment under the various factors The risk assessment of existing tunnel was conducted according to the random finite computing result and theory of risk analysis.
The total failure probability under various factors is 41.18%.

A similar conclusion was drawn for creep properties [7].
To fulfil the secondary goal, how the increased δ phase formation affects the fatigue properties, the fatigue push-pull test at room temperature and at 700 °C was done.
Fatigue process is influenced by many factors, surface roughness, and stress amplitude, frequency of loading, microstructure and temperature as well.
Sarma, Effect of standard heat treatment on the microstructure and mechanical properties of hot isostatically pressed superalloy Inconel 718, Mater.
Almeida, The effect of the δ phase on the mechanical properties of an Inconel 718 superalloy, J.

Several soil properties, such as-cohesion, angle of internal friction and density were measured.
Using borehole (BH) log data and above mentioned soil properties, polder embankments were modelled using Geo5 software.
Fig. 3 presents soil properties obtained from field tests in various soil layers of the above mentioned boreholes.
Since, different grain sizes affects the engineering properties of soil and influence soil classification, grain size analysis provided the required grain size distribution.
Safety factors (FoS) is higher than critical 1.2 in all of the above scenarios.

These allow obtaining a change in properties in the direction parallel to the imposed gradient.
Changes in mechanical, optical, and electrical properties as well as in thermal conductivity, hardness, and brittleness, and combinations of the above, e.g. chemical resistance with increase in mechanical or electrical properties, can be achieved [6].
These materials possess different physical and chemical properties.
These factors can affect the mechanical and high temperature oxidation behavior.
The presence of the Ti3SiC2 phase in the matrix has a profound influence on the properties of the composite.

Investigation on surface and biological properties of silver containing diamond like carbon films on polyethylene terephthalate film surface by hybrid reactive sputtering method.
The surface properties of DLC films are very important in biomedical applications; hence it is necessary to design the surface properties of the DLC films.
PET is one of the most important polymeric materials used in the biomedical field because of its excellent mechanical properties and moderate biocompatibility.
The silver particles are able to improve the mechanical properties such as micro hardness of the DLC films. 3.5 Hydrophilicity analysis: Contact angle results The hydrophilicity of the Ag-DLC films is analyzed by contact angle measurements using sessile drop method.
Hence the factors sp3, surface morphology and concentration of Ag are responsible for increasing the contact angle.

Generally, there are four main factors which have considerable effect on the wear resistance of 316 stainless steels and steels in general which are heat treatment, alloying additions, influence of carbon content, and effects of carbides.
Other factors such as plastic deformation, grain size, recrystallization temperature, hardness, and strain rate also affect the wear of steels.
Sharef, Yousef Arebi, 2020, “Effect of Stand -Off Distance on the Mechanical Properties of TIG Butt Joints of 316 Stainless Steel”, key Engineering Materials, V833, pp 59- 65
[13] Deming Xu, Xiangliang Wan, Jianxin Yu, Guang Xu and Guangqiang Li, 2018, “Effect of Cold Deformation on Microstructures and Mechanical Properties of Austenitic Stainless Steel” , Metals, 8, 522, pp. 2-14
Abbas Najafizadeh, Ahmed Kemanpur, Fanoosh Forouzan, 2010, “ The Effect of Cold Rolling Regime on Microstructure and Mechanical Properties of AISI 304L Stainless Steel”, Journal of Materials Processing Technology.

Requirements of the Green Redesign The traditional design just considers the basic properties of the product and ignores the interaction of the products with the environment and the operator.
It can make drive compact structure, high mechanical efficiency, low noise, small vibration, high precision.
Factors at the same level is compared, a series of comparative judgment matrix is established by the Saaty as M=（bij）n× n .
= The index weight of cell-factors used the same method, the resultant as Table 2.
The model and apply of Mechanical and Electrical Products with green remanufacturing [J].

This will not affect the normal operation of the factory.
This will affect the real-time of the system.
The sampling rate transform has the following properties.
This properties play an important role in multiple sampling rate signal processing[6]. 1) It is interchangeable between extraction and multiply constant operation. 2) It is interchangeable between zero interpolation and multiply constant. 3) We can decimate the two signals respectively and then add them, or we can add the two signals firstly and then decimate them.
The two ways are equivalent. 4) Two signals that have the same sampling rate interpolate respectively (the interpolated factors are equal) and then add, or add firstly and then interpolate.

In fact, at high moisture content, molds are likely to develop on cellulosic materials affecting indoor air quality and eventually causing a variety of health risks to occupants.
Other mechanical and insulation properties have been evaluated by other authors in order to produce bioplastics and composite materials [12.13.14].
Variable temperature and relative humidity conditions in indoor and outdoor environment cause vapor transition within the construction element by affecting the water vapor pressure difference.
Structures and properties of the goose down as a material for thermal insulation.
[11] Kuqo, A., Boci, I., Vito, S., and Vishkulli, S, Mechanical properties of lightweight concrete composed with Posidonia oceanica fibres, Zastita Materijala, 59 (4), 2018, 519-523

The properties of steels can be influenced in a wide range by changing the thermodynamical properties by suppression of the equilibrium states during cooling [6].
Annealing, normalizing, hardening/quenching and tempering are the most important heat treatments often used to modify the microstructure and obtain desired mechanical properties in steel [7].
Types of adhesive bonding failure Rahman et al. [8] stated the failure strength of adhesively bonded joints depends on many factors such as material properties, specimen geometries, test environments, surface preparation procedures.
It will be focusing on the effect of heat treatment to the mechanical properties, surface roughness, microstructure of selected steel and how it influence the strength of adhesive joint.
A systematic experiment will be conducted to evaluate optimum factors that contribute to strength of adhesive joint by using DOE approach (Anova).