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The factors of stress of tie-in girth weld were analyzed.
The results show that uncovered pipe length, tie-in offset and misalignment were the important factors which affect the stress of tie-in girth weld.
The stress of the tie-in girth weld is affected by multiple factors, including but not limited to uncovered pipe length of the two side of tie-in girth weld, tie-in offset and Misalignment of the weld.
So it can be concluded that misalignment is one of the most important factors affecting the stress of tie-in girth weld [8].
By the results of FEA, it is concluded that: (1) Uncovered pipe length, tie-in offset and misalignment are the important factors which affect the stress of tie-in girth weld.

And effect of reinforcement was analyzed under the different influential factors.
These factors include rammer weight, rammer falling distance, rammer radius and ramming energy.
Except for the factors of indicators of soil mechanics itself, others factors which affect the compaction effects mostly are parameters of dynamic compaction construction technology, such as including hammer weight, dropping distance, the radius of hammer and tamping capacity, etc.
With increasing of the construction scale and complexity degree, the condition of the geotechnical engineering will be complicated in load, geotechnical properties and boundary conditions.
Calculation Program Except the soil, the main factors affecting the compaction effect by the method of the dynamic drainage consolidation are tamping capacity, hammer weight, dropping distance of hammer and radius of hammer.

The research investigated the mechanical and thermal properties of composites reinforced with Banana fibre (BF) and Sisal fibre (SF).
Adding natural fibre to starch biopolymer can improve its mechanical and thermal properties, according to studies [10].
As was to be predicted, treating the surface of natural fibres with an alkaline solution changed their mechanical and physical properties by affecting their wettability.
Thermal Properties 2.4.1.
Damping factors of 0.054, 0.056, and 0.055 were achieved by the T-BF7SF3, T-BF5SF5, and T-BF3SF7, compared to treated hybrid composite.

The super mechanical properties have made NCD film to be an effective way to improve the resistance performance of the ceramic bearing and extended its life.
Factors such as substrate material, thickness of NCD coating, load and interlayer material which affect the shear stress distribution of NCD coating on bearing ball were investigated.
In this paper, factors such as substrate material, thickness of NCD coating, load and interlayer material which may affect the distribution of the contact stress were investigated, with a view to search the optimized assembly for NCD coated roll ball.
The mechanical properties of the models were presented in Table.1.
The interlayer is a thin layer formed in the initial period of CVD process and mechanical properties can be various.

The refined α grains and Ca-containing Mg12RE with higher thermal stability are considered to be responsible for the improved mechanical properties at room and elevated temperatures for the EZ43-Ca alloys.
Consequently, leading challenges to widespread use of the Mg alloys have focused on the improvement of their mechanical properties at elevated temperatures [2-4].
Taking these previous results into account, it is reasonable to expect that Ca may play a beneficial role in improvement of mechanical properties at room and elevated temperatures in case of Mg-RE based alloys.
Lee et al. [8] reported that solute elements such as Zr, Ca and Si possess higher growth restriction factors on Mg due to their strong segregating power.
Summary The microstructures and mechanical properties at ambient and elevated temperatures up to 300 o C have been investigated for EZ43(Mg-4%RE-3%Zn)-(0~1.2)%Ca casting alloys.

Comparative Analysis of the Physical and Mechanical Properties of Composites with Functional Fillers Based on Waste Vyacheslav V.
A comparative analysis of the tested physical and mechanical properties is carried out, depending on the characteristics of the particle size of the fillers.
Samples were taken from the composites obtained for the study of mechanical properties.
Investigations of physical and mechanical properties were carried out at the Research Center “Wood-polymer composites”, Moscow.
Shibakov, Mechanical properties of filled polyvinyl chloride compositions, Bulletin of Kazan Technological University. 15(17) (2012) 107-109

This review provides an overview of importance of the factors to be considered when designing the composites which affects the mechanical properties.
The physical and mechanical properties of composite system are equally important for suitability of applications.
They determined mechanical properties of Jute Polyester and Hybrid Composite specimens with warp­weft arrangement.
They found that Hy­ brid Jute provides good mechanical properties than Jute Polyester.
Sparnins: Mechanical Properties of Flax Fibers and Their Composites, Ph.D.

Buildings are a crucial part of our daily life, on average people spends 85 % of their time performing activities inside of buildings and therefore the quality of the indoor environment is a critical factor affecting the happiness and productivity of building users.The indoor environmental quality has a strong relationship on the thermal conditions of a space which is directly affected by the amount of heat lost or gained due to the properties of the materials used, the external environmental conditions and the inner sources of heat; In consequence, efforts have to be made to maintain proper thermal conditions by means of using natural and mechanical strategies to provide heating, cooling and ventilation.
The level of comfort depends on several personal and environment factors.
The six main factors that define thermal comfort are the following: Personal Factors · Metabolic rate.
Environment Factors · Air temperature.
When these factors are known, the thermal sensation for the body as a whole can be predicted by calculating the predicted mean vote (PMV) using the following formula: where: is the Metabolic rate, .

Experiments and Discussion The following parameters were used as variable variables during the research: the diameter of the electrode wire, the frequency of the control mechanical actions, as well as the angle of inclination of the base metal plate to simulate the acting force factors and other conditions for the formation of the deposited layer on curved surfaces.
The formed deposited layer contains 0.4 % carbon in its composition and has acid-resistant properties, since it contains 17 % chromium, as well as other alloying elements.
Microstructure of the heat-affected zone: a) without mechanical impacts on the electrode; b) frequency of mechanical impacts on the electrode f = 30 Hz (×200) Noticeable complex oxide-nitride inclusions surrounded by diffusion zones are light areas of the austenitic structure (Fig. 5).
This should contribute to an increase in the mechanical properties of the heat-affected zone and crack resistance of the deposited layer under conditions of thermomechanical loading.
Kovalevska, Parameters of fire-retardant coatings of steel constructions under the influence of climatic factors, Scientific Bulletin of National Mining University. 3 (2019) 46-53.

The classification of mineral additives used in cementitious materials is dependent on many factors such as morphology and composition, but it also depends on the kinetics of the reaction with calcium hydroxide, also known as its pozzolanicity.
The results show that the mechanical tests are more affected by the substitution content than by the nature of the substitution.
The indirect methods measure a physical or mechanical property of the sample that indicates the extent of pozzolanic activity (tests of mechanical strength, electrical conductivity, thermogravimetry, and heat by conduction) [1].
Several factors influence the mechanical results, such as water/cement ratio, level of cement substitution, curing time, and type of substitution.
However, the substitution material (ground quartz or silica fume) does not significantly affect the outcome.